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  Subjects -> BIOLOGY (Total: 3310 journals)
    - BIOCHEMISTRY (255 journals)
    - BIOENGINEERING (130 journals)
    - BIOLOGY (1577 journals)
    - BIOPHYSICS (49 journals)
    - BIOTECHNOLOGY (259 journals)
    - BOTANY (245 journals)
    - CYTOLOGY AND HISTOLOGY (30 journals)
    - ENTOMOLOGY (73 journals)
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    - MICROBIOLOGY (270 journals)
    - MICROSCOPY (10 journals)
    - ORNITHOLOGY (28 journals)
    - PHYSIOLOGY (72 journals)
    - ZOOLOGY (143 journals)

BIOLOGY (1577 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 1720 Journals sorted alphabetically
AAPS Journal     Hybrid Journal   (Followers: 29)
Achievements in the Life Sciences     Open Access   (Followers: 7)
ACS Pharmacology & Translational Science     Hybrid Journal   (Followers: 1)
ACS Synthetic Biology     Hybrid Journal   (Followers: 25)
Acta Biologica Colombiana     Open Access   (Followers: 7)
Acta Biologica Hungarica     Full-text available via subscription   (Followers: 4)
Acta Biologica Sibirica     Open Access   (Followers: 2)
Acta Biologica Turcica     Open Access  
Acta Biologica Venezuelica     Open Access  
Acta Biomaterialia     Hybrid Journal   (Followers: 29)
Acta Biotheoretica     Hybrid Journal   (Followers: 4)
Acta Chiropterologica     Full-text available via subscription   (Followers: 6)
acta ethologica     Hybrid Journal   (Followers: 4)
Acta Fytotechnica et Zootechnica     Open Access   (Followers: 1)
Acta Limnologica Brasiliensia     Open Access   (Followers: 4)
Acta Médica Costarricense     Open Access   (Followers: 2)
Acta Musei Silesiae, Scientiae Naturales     Open Access   (Followers: 1)
Acta Neurobiologiae Experimentalis     Open Access  
Acta Parasitologica     Hybrid Journal   (Followers: 11)
Acta Scientiarum. Biological Sciences     Open Access   (Followers: 2)
Acta Scientifica Naturalis     Open Access   (Followers: 2)
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis     Open Access   (Followers: 1)
Actualidades Biológicas     Open Access   (Followers: 1)
Advanced Health Care Technologies     Open Access   (Followers: 8)
Advanced Journal of Graduate Research     Open Access  
Advanced Nonlinear Studies     Hybrid Journal  
Advanced Studies in Biology     Open Access  
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 2)
Advances in Bioinformatics     Open Access   (Followers: 20)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4)
Advances in Biology     Open Access   (Followers: 12)
Advances in Cell Biology/ Medical Journal of Cell Biology     Open Access   (Followers: 30)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 14)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 13)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 7)
Advances in Ecological Research     Full-text available via subscription   (Followers: 44)
Advances in Environmental Sciences - International Journal of the Bioflux Society     Open Access   (Followers: 17)
Advances in Enzyme Research     Open Access   (Followers: 11)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 8)
Advances in Genome Biology     Full-text available via subscription   (Followers: 11)
Advances in High Energy Physics     Open Access   (Followers: 22)
Advances in Human Biology     Open Access   (Followers: 4)
Advances in Life Science and Technology     Open Access   (Followers: 18)
Advances in Life Sciences     Open Access   (Followers: 6)
Advances in Marine Biology     Full-text available via subscription   (Followers: 21)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 25)
Advances in Organ Biology     Full-text available via subscription   (Followers: 2)
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3)
Advances in Space Biology and Medicine     Full-text available via subscription   (Followers: 6)
Advances in Structural Biology     Full-text available via subscription   (Followers: 5)
Advances in Tropical Biodiversity and Environmental Sciences     Open Access   (Followers: 1)
Advances in Virus Research     Full-text available via subscription   (Followers: 6)
African Journal of Range & Forage Science     Hybrid Journal   (Followers: 8)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 2)
Ageing Research Reviews     Hybrid Journal   (Followers: 12)
Aging Cell     Open Access   (Followers: 25)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat     Open Access  
AJP Cell Physiology     Hybrid Journal   (Followers: 18)
AJP Endocrinology and Metabolism     Hybrid Journal   (Followers: 24)
AJP Lung Cellular and Molecular Physiology     Hybrid Journal   (Followers: 3)
Al-Kauniyah : Jurnal Biologi     Open Access  
Alasbimn Journal     Open Access   (Followers: 2)
Alces : A Journal Devoted to the Biology and Management of Moose     Open Access  
AMB Express     Open Access   (Followers: 1)
Ambix     Hybrid Journal   (Followers: 3)
American Fern Journal     Full-text available via subscription   (Followers: 1)
American Journal of Agricultural and Biological Sciences     Open Access   (Followers: 9)
American Journal of Bioethics     Hybrid Journal   (Followers: 14)
American Journal of Human Biology     Hybrid Journal   (Followers: 16)
American Journal of Medical and Biological Research     Open Access   (Followers: 10)
American Journal of Plant Sciences     Open Access   (Followers: 20)
American Journal of Primatology     Hybrid Journal   (Followers: 17)
American Malacological Bulletin     Full-text available via subscription   (Followers: 3)
American Naturalist     Full-text available via subscription   (Followers: 80)
Amphibia-Reptilia     Hybrid Journal   (Followers: 6)
Anadol University Journal of Science and Technology B : Theoritical Sciences     Open Access  
Anadolu University Journal of Science and Technology : C Life Sciences and Biotechnology     Open Access   (Followers: 2)
Anaerobe     Hybrid Journal   (Followers: 4)
Analytical Methods     Full-text available via subscription   (Followers: 12)
Anatomical Science International     Hybrid Journal   (Followers: 3)
Animal Cells and Systems     Hybrid Journal   (Followers: 5)
Animal Models and Experimental Medicine     Open Access  
Annales de Limnologie - International Journal of Limnology     Hybrid Journal   (Followers: 1)
Annales françaises d'Oto-rhino-laryngologie et de Pathologie Cervico-faciale     Full-text available via subscription   (Followers: 3)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3)
Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia     Open Access   (Followers: 1)
Annals of Applied Biology     Hybrid Journal   (Followers: 7)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 19)
Annals of Human Biology     Hybrid Journal   (Followers: 5)
Annals of Science and Technology     Open Access  
Annual Review of Biomedical Engineering     Full-text available via subscription   (Followers: 14)
Annual Review of Biophysics     Full-text available via subscription   (Followers: 25)
Annual Review of Cancer Biology     Full-text available via subscription   (Followers: 3)
Annual Review of Cell and Developmental Biology     Full-text available via subscription   (Followers: 39)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 15)
Annual Review of Genomics and Human Genetics     Full-text available via subscription   (Followers: 25)
Annual Review of Phytopathology     Full-text available via subscription   (Followers: 13)
Anthropological Review     Open Access   (Followers: 24)
Antibiotics     Open Access   (Followers: 9)
Antioxidants     Open Access   (Followers: 5)
Antioxidants & Redox Signaling     Hybrid Journal   (Followers: 9)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5)
Anzeiger für Schädlingskunde     Hybrid Journal   (Followers: 1)
Apidologie     Hybrid Journal   (Followers: 4)
Apmis     Hybrid Journal   (Followers: 1)
APOPTOSIS     Hybrid Journal   (Followers: 9)
Applied Biology     Open Access   (Followers: 1)
Applied Bionics and Biomechanics     Open Access   (Followers: 7)
Applied Vegetation Science     Full-text available via subscription   (Followers: 10)
Aquaculture Environment Interactions     Open Access   (Followers: 4)
Aquaculture International     Hybrid Journal   (Followers: 26)
Aquaculture Reports     Open Access   (Followers: 3)
Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society     Open Access   (Followers: 7)
Aquatic Biology     Open Access   (Followers: 6)
Aquatic Ecology     Hybrid Journal   (Followers: 37)
Aquatic Ecosystem Health & Management     Hybrid Journal   (Followers: 15)
Aquatic Science and Technology     Open Access   (Followers: 3)
Aquatic Toxicology     Hybrid Journal   (Followers: 23)
Archaea     Open Access   (Followers: 3)
Archiv für Molluskenkunde: International Journal of Malacology     Full-text available via subscription   (Followers: 3)
Archives of Biological Sciences     Open Access  
Archives of Microbiology     Hybrid Journal   (Followers: 9)
Archives of Natural History     Hybrid Journal   (Followers: 8)
Archives of Oral Biology     Hybrid Journal   (Followers: 3)
Archives of Virology     Hybrid Journal   (Followers: 5)
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2)
Arid Ecosystems     Hybrid Journal   (Followers: 3)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
Arquivos do Museu Dinâmico Interdisciplinar     Open Access  
Arthropod Structure & Development     Hybrid Journal   (Followers: 2)
Arthropods     Open Access   (Followers: 1)
Artificial DNA: PNA & XNA     Hybrid Journal   (Followers: 3)
Asian Bioethics Review     Full-text available via subscription   (Followers: 3)
Asian Journal of Biodiversity     Open Access   (Followers: 5)
Asian Journal of Biological Sciences     Open Access   (Followers: 3)
Asian Journal of Cell Biology     Open Access   (Followers: 5)
Asian Journal of Developmental Biology     Open Access   (Followers: 2)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 4)
Asian Journal of Nematology     Open Access   (Followers: 4)
Asian Journal of Poultry Science     Open Access   (Followers: 4)
Atti della Accademia Peloritana dei Pericolanti - Classe di Scienze Medico-Biologiche     Open Access  
Australian Life Scientist     Full-text available via subscription   (Followers: 2)
Australian Mammalogy     Hybrid Journal   (Followers: 7)
Autophagy     Hybrid Journal   (Followers: 4)
Avian Biology Research     Full-text available via subscription   (Followers: 5)
Avian Conservation and Ecology     Open Access   (Followers: 13)
Bacteriology Journal     Open Access   (Followers: 1)
Bacteriophage     Full-text available via subscription   (Followers: 3)
Bangladesh Journal of Bioethics     Open Access  
Bangladesh Journal of Plant Taxonomy     Open Access  
Bangladesh Journal of Scientific Research     Open Access   (Followers: 1)
Batman Üniversitesi Yaşam Bilimleri Dergisi     Open Access  
Berita Biologi     Open Access   (Followers: 1)
Between the Species     Open Access   (Followers: 1)
Bio Tribune Magazine     Hybrid Journal  
BIO Web of Conferences     Open Access  
BIO-Complexity     Open Access  
Bio-Grafía. Escritos sobre la Biología y su enseñanza     Open Access  
Bio-Lectura     Open Access  
Bioanalytical Reviews     Hybrid Journal   (Followers: 2)
Biocatalysis and Biotransformation     Hybrid Journal   (Followers: 6)
BioCentury Innovations     Full-text available via subscription   (Followers: 1)
Biochemistry and Cell Biology     Hybrid Journal   (Followers: 16)
Biochimie     Hybrid Journal   (Followers: 6)
BioControl     Hybrid Journal   (Followers: 6)
Biocontrol Science and Technology     Hybrid Journal   (Followers: 8)
Biodemography and Social Biology     Hybrid Journal  
BioDiscovery     Open Access   (Followers: 2)
Biodiversidade e Conservação Marinha : Revista CEPSUL     Open Access  
Biodiversitas : Journal of Biological Diversity     Open Access  
Biodiversity Data Journal     Open Access   (Followers: 4)
Biodiversity Informatics     Open Access   (Followers: 1)
Biodiversity Information Science and Standards     Open Access   (Followers: 2)
Biodiversity: Research and Conservation     Open Access   (Followers: 26)
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access  
Bioeksperimen : Jurnal Penelitian Biologi     Open Access  
Bioelectrochemistry     Hybrid Journal   (Followers: 2)
Bioelectromagnetics     Hybrid Journal   (Followers: 2)
Bioenergy Research     Hybrid Journal   (Followers: 3)
Bioengineering and Bioscience     Open Access   (Followers: 3)
BioEssays     Hybrid Journal   (Followers: 11)
Bioethics     Hybrid Journal   (Followers: 17)
BioéthiqueOnline     Open Access  
Biofabrication     Hybrid Journal   (Followers: 5)
Biofilms     Full-text available via subscription   (Followers: 2)
Biogeosciences (BG)     Open Access   (Followers: 11)
Biogeosciences Discussions (BGD)     Open Access   (Followers: 3)
Bioinformatics     Hybrid Journal   (Followers: 379)
Bioinformatics and Biology Insights     Open Access   (Followers: 12)
Bioinspiration & Biomimetics     Hybrid Journal   (Followers: 7)
Biointerphases     Open Access   (Followers: 1)
Biojournal of Science and Technology     Open Access  
BioLink : Jurnal Biologi Lingkungan, Industri, Kesehatan     Open Access   (Followers: 1)
Biologia     Hybrid Journal  
Biologia on-line : Revista de divulgació de la Facultat de Biologia     Open Access  
Biological Bulletin     Partially Free   (Followers: 6)
Biological Control     Hybrid Journal   (Followers: 8)
Biological Invasions     Hybrid Journal   (Followers: 24)
Biological Journal of the Linnean Society     Hybrid Journal   (Followers: 18)

        1 2 3 4 5 6 7 8 | Last

Similar Journals
Journal Cover
Biologia
Journal Prestige (SJR): 0.299
Citation Impact (citeScore): 1
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1336-9563 - ISSN (Online) 0006-3088
Published by Springer-Verlag Homepage  [2574 journals]
  • The implications of the impact of the recreational use of forest mining
           ponds on benthic invertebrates with special emphasis on gastropods
    • Abstract: The relationships between the distribution and diversity patterns of benthic invertebrates in forest ponds used for different recreational activities were examined in this study. The study was based on sampling of benthic invertebrates, plant coverage, physical and chemical analysis of water samples and multivariate species analysis. Mining ponds varied in their solution chemistry and plant cover, with those used for recreation having significantly lower invertebrate occurrences (755 ind. m−2) compared to ponds with no recreational use (2629 ind. m−2). Statistically significant differences were also observed in the density of Oligochaeta, Hirudinea, Coleoptera, Trichoptera and Diptera between the two types of ponds. Overall, gastropods were more diverse and abundant in ponds not used for recreation. This appeared to relate strongly to plant cover, since cover was greatly reduced in recreational ponds, although plant diversity was enhanced. Density and diversity of benthic invertebrates was also observed to differ in relation to the kind of recreational use involved (recreational angling, swimming, power boating) although this was not quantified. The occurrence of freshwater snails primarily depended on the Ca concentration, the conductivity of the water and plant cover, but recreational disturbance appeared to reduce abundance where it occurred and was related to a reduction in overall plant cover.
      PubDate: 2019-03-21
       
  • Vegetation classification as a mirror of evolution' Thoughts on the
           syntaxonomy and management of bramble scrubs of the Prunetalia
           (Rhamno-Prunetea)
    • Abstract: In Germany and the Netherlands, many bramble scrub associations are distinguished on the basis of the occurrence of Rubus species. The associations belonging to the Prunetalia spinosae Tüxen 1952 are usually assigned to the Pruno-Rubion radulae Weber Osnabr Naturwiss Mitt 3:143–150, 1974, but published tables show inconsistencies in the occurrence of alliance character species. In this paper, we compare synoptic tables from different sources from the Netherlands and Germany. From this comparison, it is concluded that the associations can be divided over two alliances, the Pruno-Rubion radulae in central Europe, and the Pruno-Rubion sprengelii Weber Osnabr Naturwiss Mitt 3:143–150, 1974 in northwest Europe (excluding the UK). The differential species of both these alliances coincide to a considerable degree with the indicator species of the phytogeographical Rubus territories as defined by Haveman et al. (J Biogeogr 43:1360-1371, 2016). As can be deduced from recent molecular studies (Sochor et al. Mol Phylogenet Evol 89:13-27, 2015), these territories have an evolutionary background. This is an effect of the unsaturated distribution areas of a large portion of the very young Rubus agamospecies. The same holds true for the two alliances: although they have a different ecology, we argue that their current distribution areas are not a reflection of this ecology, but both their ecology and distribution area are caused by different evolutionary developments.
      PubDate: 2019-03-15
       
  • Carcass characteristics and serum biochemical profile of Japanese quail by
           the supplementation of pine needles and vitamin E powder
    • Abstract: The aim of the study was to investigate the effect of pine needles and vitamin E powder on blood biochemistry and carcass characteristics of female Japanese quails. A total of 180 female Japanese quails were obtained from the open market and maintained at deep litter housing pens system for 42 days. After adaptation, all female quails were divided into the following groups, group 1, control QC; group 2, QE; supplemented with vitamin E at the rate of 150 mg L−1; group 3, QP; pine needles at the rate of 150 mg L−1and group 4, QEP; the combination of both. The high-density lipoprotein cholesterol (HDLC) and total cholesterol (TC) were significantly (p < 0.05) affected by QE and QP groups as compared to QC and QEP groups. Triglyceride (TG), total protein (TP), glutathione peroxidase (GPx) and superoxide dismutase (SOD) significantly (p < 0.05) increased in all treatment groups except for the QC group. Aspartate transaminase was (AST) significantly (p < 0.05) increased and alanine transaminase (ALT) was decreased in treatment groups as compared to QC. The concentration of Zinc (Zn), female breast meat composition, and the content of crude fat were significantly (p < 0.05) higher in treatments groups than in QC. The addition of pine needles and vitamin E in female Japanese quail feed, improved female quail performance, and serum antioxidant system.
      PubDate: 2019-03-12
       
  • Lithobius ( Ezembius ) polyommatus sp. n. and Lithobius ( Ezembius )
           dulanensis sp. n. (Lithobiomorpha: Lithobiidae), two new species from
           Qinghai-Tibet Plateau, China
    • Abstract: Lithobius (Ezembius) polyommatus sp. n. and Lithobius (Ezembius) dulanensis sp. n. discovered from Qinghai-Tibet Plateau, China, are described. The two new species are morphologically similar, but could be distinguished by having mostly 12 ocelli other than 14 ocelli, anterior accessory spur absent versus present on legs 14, dorsal sulci on male 14th legs absent versus present and dorsal lateral setae short, only the largest as stout as the general setae instead of only long setae on the second article of the female gonopod. A key to the Chinese species of Ezembius is presented.
      PubDate: 2019-03-12
       
  • Habitat-wise composition and foraging guilds of avian community in a
           suburban landscape of lower Gangetic plains, West Bengal, India
    • Abstract: Documentation of avian assemblages in different ecosystems is very important from environmental monitoring perspective. We assessed the species richness and foraging guilds of birds in different habitats of a suburban area in lower Gangetic plains (Bongaon, West Bengal, India) where no such studies have been done so far. Overall, 119 species of birds were recorded during the study period (June 2015 – May 2016) for the entire study area. Maximum species belonged to order Passeriformes (52 species). Based on species richness of birds, the dendrogram revealed two distinct clusters of habitats, one containing perennial wetland, riverine mixed vegetation and seasonal wetland, and the other with residential area and plantation forest. Generalized linear model (GLM) with negative binomial distribution and log-link revealed that species richness of birds significantly varied between different habitats and seasons. Agglomerative Hierarchical Clustering using avian species richness revealed that the habitats associated with water bodies fall under separate cluster and had higher species richness than the cluster containing habitats without water bodies. Maximum bird species was noticed in perennial wetland followed by riverine mixed vegetation, seasonal wetland, residential area and plantation forest. Richness of insectivores was highest in perennial wetland and riverine mixed vegetation, number of carnivorous species was maximum in seasonal wetlands, while omnivores showed the highest richness in residential area and plantation forests. This area supports two near threatened (NT) species namely black-headed ibis (Threskiornis melanocephalus) and Alexandrine parakeet (Psittacula eupatria). Our study is the first effort towards assessment of habitat-wise species richness of birds in this suburban area which supports good number of avifauna. Findings of the present study could serve as an important baseline to assess the impact of urbanization and habitat change on avian species richness in this suburban landscape, and might also be useful in adopting sustainable and bird-friendly management plan for this area.
      PubDate: 2019-03-12
       
  • Key factors in organization of sandy orthopteran assemblages
    • Abstract: Orthopterans are important functional elements of ecosystems, in which several factors influence their distribution and density. Factors related to the vegetation, macro- and microclimate have been intensively investigated, although the role of the bedrock and soil in organization of orthopteran assemblages has not been explored sufficiently. Our results showed that general effects, as (1) dry, warm macro- and microclimate, (2) short vegetation, (3) presence of about 30% bare sand surface, are important habitat factors organizing sandy orthopteran assemblages of the Carpathian Basin too. Further we found that optimal climate and vegetation structure is not sufficient for a high species number of sand-specialists. Local assemblages rich in sand elements are related to sand areas characterised by a proportion of the fine fraction of the soil (= small-fine-dust fractions together) of around 80%.
      PubDate: 2019-03-12
       
  • Ecology and species distribution pattern of Soldanella sect. Soldanella (
           Primulaceae ) within vegetation types in the Carpathians and the adjacent
           mountains
    • Abstract: Molecular plant taxonomy methods have helped to introduce new findings to the original concepts of plant evolution in comparison to traditional classification based on morphological, karyological, and ecological characters. The objective of our study was to determine if a new taxonomic concept developed for the Soldanella genus would also change the traditional knowledge of coenological relations within plant communities and distribution patterns of habitats. Taxa in the genus Soldanella sect. Soldanella from the Carpathian Mts and the adjacent region in the North-Eastern Alps and Bohemian Massif were selected as model representatives. This territory includes the largest concentration of study taxa, namely S. carpatica, S. hungarica, S. major, S. marmarossiensis agg., S. montana, S. oreodoxa, and potentially also some others. However, the ecological characteristics published to date are in conflict with our field observations. Two datasets were combined for the purpose of our study, one of which was based on older and published phytocoenological relevés that are now widely available through the European Vegetation Archive (EVA), and the other, which is based on our own data, sampled throughout the distribution area, which specifically targeted the type localities as well as peripheral localities. Analysis of phytocoenological relevés significantly extended the older knowledge about the habitat preferences of the studied species. Similarly, due to our detailed population sampling, a view of the geographical distribution and expansion of snowbell distribution boundaries has been added, especially for the Eastern and Southern Carpathian taxa. In revising the older knowledge, the altitudinal range of the selected species must be revised as well. In the majority of cases, our findings broadened the existing knowledge on altitudinal divergence, ecological behaviour and the phytogeographical distribution of the study species. Snowbells considered as typical montane elements in forest habitats were also found at much higher alpine altitudes, e.g. S. carpatica, S. hungarica, S. major, and S. marmarossiensis agg., and vice versa, with taxa considered to be exclusively inhabiting the alpine belt growing in contact forest habitats as well. The spectrum of the studied habitats and plant units show wide ecological valence in the majority of Soldanella species; however, some particular preferences for different substrate types, altitudinal belts, or habitat types were indicated.
      PubDate: 2019-03-12
       
  • Barley and spelt differ in leaf silicon content and other leaf traits
    • Abstract: Silicon is considered to be a beneficial element for plants, improving their potential to overcome various stress conditions. Accumulation of silicon differs across different plant species and during plant development, leading to differences in their sensitivity to environmental constraints. We studied the leaf contents of silicon and some other elements for barley (Hordeum vulgare L.) and spelt (Triticum spelta L.) in their vegetative and reproductive stages, while also monitoring the different morphological, biochemical, and optical leaf traits. For barley, the leaf silicon and calcium contents were 1.6% and 1.1%, respectively, and for spelt, they were 1.4% and 0.6%, respectively. There were considerable morphological differences between these two species, including significantly higher prickle hair density in barley, which was positively related to leaf contents of phytoliths, silicon, and calcium. The reflectance of the barley leaves was significantly (p ≤ 0.05) positively related to leaf phytolith and silicon contents throughout the whole spectrum, while light transmittance was significantly (p ≤ 0.05) negatively related to leaf phytolith and silicon contents in the visible and near infrared regions. For spelt, there were no such correlations. Barley showed a significant increase in total and phytolith-bound silicon in the leaves from the vegetative to reproductive stage, which was not the case in spelt. Differences between barley and spelt were also observed in stomata density and length, which would also affect water management in these plants, and thus also their uptake of silicon and calcium.
      PubDate: 2019-03-12
       
  • Arginine induces skeletal muscle fiber type conversion by upregulating
           Akirin2 and AMPK/PGC-1α in mice
    • Abstract: We have previously reported that arginine promotes slow myosin heavy chain expression in cell culture via Akirin2 and the AMP-activated protein kinase (AMPK) signaling pathway. Our goal in the present study was to investigate whether arginine has similar functions and molecular mechanisms in vivo. Kunming mice were fed a diet supplemented with arginine and actively immunized with Akirin2. The study lasted for 40 d. Tibialis anterior (TA) muscle was harvested for analysis. We found that Kunming mice supplemented with arginine significantly increased the oxidative fibers expression and decreased the expression of glycolytic fiber. Expressions of peroxisome proliferator-activated receptor-γ coactivator 1α (PGC-1α) and AMPK were increased in the TA muscle of arginine-treated Kunming mice. We also find that dietary supplementation of arginine increased the succinate dehydrogenase and malate dehydrogenase activities and decreased the lactate dehydrogenase activity. But active immunization against Akirin2 got opposite results. These results indicated that arginine induced muscle fiber transition from type II to type I, which may be mediated by Akirin2 and AMPK//PGC-1α signaling pathway.
      PubDate: 2019-03-06
       
  • Optimizing culture conditions for high frequency somatic embryogenesis and
           plantlet conversion in Daucus carota L
    • Abstract: The present investigation was carried out to establish a simple and efficient in vitro method for rapid propagation of Daucus carota L for different applications. Root, stem, leaf and seed explants were tested to induce callus on Gamborg medium supplemented with 2,4-Dichlorophenoxyacetic acid (2,4-D) for cell suspension culture establishment. The leaf, stem, seed explants induced calluses were more embryogenic and viable when compared to callus derived from tap root explants. Plant regeneration potential of embryogenic callus from tap root showed very slow response producing only fewer shoots, whereas the response of other explants derived calluses like stem, leaves and seeds exhibited rapid multiple shoot formation within three weeks’ time. Tap root derived suspension culture showed more clumps with less viable embryogenic cells, in contrast to the stem and seed derived suspension cultures, where cells were more embryogenic and proliferative. Explant, concentration of carbohydrates, 2,4-D and amino acids were tested for embryo induction response and it was found that 3% sucrose, 1.0 mg/L 2,4-D and amino acid alanine had great influence on embryo induction. The somatic embryos were subjected to desiccation prior to plating on the regeneration medium. It was found that 1 h desiccation increased the regeneration percentage of the embryos and the conversion frequency of embryos to plants decreased on increased desiccation time. These optimized conditions will be very useful for studies involving genetic transformation, cell cycle, cell proliferation, synthetic seed production and other physiological studies of D. carota species.
      PubDate: 2019-03-05
       
  • The relationship between selected VDR gene polymorphisms and
           susceptibility to inflammatory bowel disease in Slovak population
    • Abstract: Ulcerative colitis (UC) and Crohn’s disease (CD) are the two main forms of inflammatory bowel disease (IBD). IBD is thought to result from an inappropriate and continuing inflammatory response to commensal microbes in a genetically susceptible host. One of hundreds independent SNPs connected to IBD pathogenesis are considered polymorphisms in the gene for vitamin D receptor (VDR). The purpose of the study was to investigate the association of VDR gene polymorphisms FokI, BsmI, ApaI, TaqI with disease susceptibility in 86 Slovak UC and 122 CD patients and in 155 controls. The distribution of VDR (FokI, BsmI, ApaI and TaqI) alleles and genotype variants in Slovak healthy population is analogous to those of other Caucasoid populations. The distributions of FokI genotypes in CD patients showed significant Hardy-Weinberg equilibrium (HWE) deviation (P = 0.0062) with considerable shortage of heterozygosity compared to controls (36.89 vs. 47.67%; OR = 0.5479; 95%CI = 0.3376–0.8892). We did not find any significant association of FokI, BsmI, ApaI and TaqI variants with localisation of UC or CD manifestation as well as the age of onset in case of Crohn’s disease. Our study showed for the first time in Slovak population that the FokI polymorphism can be involved in susceptibility to Crohn’s disease development. However, we did not find any association of FokI, BsmI, ApaI and TaqI SNPs with clinical features of CD and UC.
      PubDate: 2019-03-04
       
  • Effects of occurrence record number, environmental variable number, and
           spatial scales on MaxEnt distribution modelling for invasive plants
    • Abstract: MaxEnt, a commonly used approach of species distribution modelling, is widely used to predict plant invasion at the large spatial scale based on occurrence records and environmental variables. However, the number of occurrence records, number of environmental variables, and spatial scales have a large potential to affect the ability of MaxEnt to predict invasive plant distributions. In this study, we used the area under the curve (AUC) of the receiver operator characteristics as an indicator of MaxEnt performance, and evaluated the effects of the number of occurrence records, number of environmental variables, and spatial scales on MaxEnt distribution modelling of invasive plants based on 1015 cases of invasive plants. Next, we suggested improvements for model performance. We found significant relationships between the AUC and the above-mentioned modelling parameters. Furthermore, we determined the relevant threshold values for the available MaxEnt models (i.e. AUC >0.7). We suggested using an appropriate number of occurrence records and environmental variables (e.g. >5) and covered cell sizes of 5.0 arc-min to model the distributions of invasive plants on the global scale. Our study provides practical references using MaxEnt to prevent and control plant invasion under global changes and contributes to the exploration of species distribution modelling mechanisms.
      PubDate: 2019-03-04
       
  • Cytological and morphological variation of Fallopia sect. Reynoutria taxa
           (Polygonaceae) in the Krivánska Malá Fatra Mountains (Slovakia)
    • Abstract: Representatives of Fallopia sect. Reynoutria (knotweeds) belong to the most aggressive invasive plants in Europe. Despite their significant role in biological invasions and the major interest devoted to them by botanists and environmentalists, the identification of the members of this group is still very difficult and often mistaken. We studied the distribution of this group in the northwestern part of the Krivánska Malá Fatra Mountains (northwestern Slovakia). Forty-three Fallopia sect. Reynoutria stands (53 stems, 106 leaves) were used in flow cytometry and multivariate morphometrics to evaluate their genome size and morphological variation. Our research revealed that the group in the study area includes three knotweed taxa and that each of them is represented by only one cytotype: hexaploid (2n = 6x ~ 66) in F. ×bohemica (23 stands), octoploid (2n = 8x ~ 88) in F. japonica var. japonica (18 stands) and tetraploid (2n = 4x ~ 44) in F. sachalinensis (2 stands). Morphometrics of 23 leaf characters revealed that the most reliable distinguishing character of Fallopia sect. Reynoutria taxa is leaf indumentum. Analyses showed that F. ×bohemica is much more similar in leaf morphology to F. japonica var. japonica than to F. sachalinensis, thus explaining the fact that F. ×bohemica is, in both Slovakia and Europe, very often confused with F. japonica var. japonica, whose presence outside cultivation is overestimated. Compared to the other two knotweed taxa, occurrences of F. japonica var. japonica in the study area were situated mainly along watercourses, due to its exclusively vegetative propagation.
      PubDate: 2019-03-01
       
  • New and additional records of earthworms (Annelida: Clitellata) from
           Central Serbia: First finding of Bimastos parvus (Eisen, 1874) in Serbia
    • Abstract: This paper includes the summarized knowledge (of more than 40 years) on earthworms in Central Serbia, in the middle part of the Balkan Peninsula. The aim of this paper is to present new data on the earthworms for the study area. Also by analysing the newly reported species together with literature records, we establish the definitive list of known earthworm taxa. The list underlines earthworm diversity and provides a general overview of their distributions, zoogeographical positions, levels of dominance and ecological categories. During the current investigations in the different parts of Central Serbia, 36 earthworm species and subspecies belonging to 10 genera were recorded. Among them, 4 taxa represented the first findings in Central Serbia: Bimastos parvus (Eisen, 1874) Bimastos eiseni (Levinsen, 1884) Aporrectodea cemernicensis Mršić, 1991 and Lumbricus castaneus (Savigny, 1826). Consequently, the number of the earthworm species recorded for Central Serbia is raised to 46. Surprisingly, the peregrine B. parvus proved to be new species in the fauna of Serbia, including the study area, so now the total number of species for the whole Serbia has risen to 75. With respect to the zoogeographic situation, the majority of them belong to peregrine (36.96%), endemic (19.57%), and trans-Aegean species (13.04%). Summing up the endemics and Balcanic-Alpine species, 30.44% of the total lumbricid fauna in Central Serbia shows an autochthonous character.
      PubDate: 2019-03-01
       
  • Potential production of polyphenols, carotenoids and glycoalkaloids in
           Solanum villosum Mill. under salt stress
    • Abstract: Changes in the antioxidant defence systems were investigated in many aromatic and medicinal plants grown under salinity; however, no study is available about its effects on Solanum villosum Mill. In this study, we investigated the response of S. villosum to sodium chloride (NaCl), especially the impacts of NaCl on secondary metabolites production (phenolic compounds, carotenoids, and glycol-alkaloids). For this purpose, a hydroponic culture experiment was conducted on seedlings subjected to 0, 50, 100, or 150 mM NaCl. NaCl affected the growth of S. villosum in terms of plant height and dry weight, however, it increased the water content of the leaves. Although leaf Na+ concentration was significantly increased under salt stress, the leaves K+, Ca2+ and Mg2+ concentration were enhanced and/ or not significantly affected. The adaptation of S. villosum to NaCl stress was also reflected by the maintain of chlorophyll levels under different NaCl treatments. Additionally, leaf caffeic acid, lutein, and beta-carotene contents were considerably increased under 100 mM NaCl treatment, along with the up regulation of some related phenolic (phenylalanine ammonialyase and flavonol synthase), and carotenoid genes (phytoene synthase 1, phytoene synthase 2, and b-lycopene cyclase). The leaf contents of β-solamargine and α-solasonine also increased significantly with increasing salinity. The present study is the first to through some light on the medicinal quality of S. villosum that would be quite helpful for production of secondary metabolites under salt-stressed conditions.
      PubDate: 2019-03-01
       
  • Molecular phylogeny of Muscari ( Asparagaceae ) inferred from cpDNA
           sequences
    • Abstract: In this study, we tried to figure out phylogenetic relationships and taxonomical positions of closely related Muscari species. Four different cpDNA regions including both coding and non-coding ones, namely, matK, trnT(UGU)-trnL(UAA) intergenic spacer (IGS), trnL(UAA) intron and trnL(UAA)-F(GAA) IGS, were employed to determine the exact circumscription of three subgenera, Muscari, Leopoldia and Botryanthus. Seventy Muscari accessions representing 31 Muscari species and different number of previously published sequences retrieved from NCBI database were analyzed. The concatenated and matK data alone were observed to be informative while none of the used non-coding regions was suitable to determine phylogeny of Muscari. Concatenated alignment gave almost the same tree topology with matK sequence. Muscari azureum and M. coeleste phylogenetically separated from all other species of Botryanthus and four main clades were observed in both of the trees even though three subgenera are accepted by Flora of Turkey. After discussing the phylogenetic positions and morphological characters in detail, moving of these two species from Botryanthus to Pseudomuscari subgenus was suggested. Thus, this study proposes that the number of Muscari subgenera should be increased from three to four in Flora of Turkey. The position of M. mirum was also remarkable; it always located distantly to its relatives of Leopoldia. Although this species may also be distinguished based on morphological features such as quite shorter plant length, one or sometimes two relatively wider leaves, and a larger fruit, it needs further studies to resolve its position reliably. Interesting positions of other species were also discussed in detail based on morphological characters in the text.
      PubDate: 2019-03-01
       
  • Biodiversity of methylotrophic microbial communities and their potential
           role in mitigation of abiotic stresses in plants
    • Abstract: Methylotrophic bacterial community is very important group of bacteria utilizing reduced carbon compounds and plays significant role in plant growth promotion (PGP), crop yield and soil fertility for sustainable agriculture. Abiotic and biotic stresses are very important factors affecting PGP in agriculture. A vast number of microbial communities play an important role in abiotic stress tolerance. The PGP methylotrophic microbes have been reported well enough to mitigate different types of biotic and abiotic stresses. The abiotic stress tolerance was well documented by several methylotrophic bacterial communities such as Hyphomicrobium, Methylarcula, Methylobacillus, Methylobacterium, Methylocapsa, Methylocella, Methyloferula, Methylohalomonas, Methylomonas, Methylophilus, Methylopila, Methylosinus, Methylotenera, Methylovirgula and Methylovorus. The abiotic stress tolerance ability of different methylotrophs and their colonization in different parts of plants under severe low temperature, high temperature, drought and salt stress conditions have been investigated in various studies. The methylotrophic communities help in proliferation of plant directly through solubilization of phosphorus, potassium and zinc, production of phytohormones viz., auxins and cytokinins; production of Fe-chelating compound, biological nitrogen fixation and ACC-deaminase activities or indirectly through productions of ammonia, siderophores and secondary metabolites. The auxin and cytokinin secreted by methylotrophs influence seed germination and plant root growth and help plants to endure water stress. On the plant surface, the abundant methylotrophs exude osmo-protectants such as sugars and alcohols which ultimately help to protect the plants from desiccation and excessive radiations. The utilisation of these potent methylotrophic strains may facilitate proper crop production, PGP by ameliorating abiotic stresses.
      PubDate: 2019-03-01
       
  • Changes in the tawny owl Strix aluco diet along an urbanisation gradient
    • Abstract: The aim of this study was to describe how the diet of tawny owl changed along an urbanisation gradient. The research was conducted from 2003 to 2011 in central Poland. Pellets were collected in the following zones: the center of Warsaw, capital city of Poland (inhabited by approximately 2 million people), its outskirts and rural areas beyond the city. To investigate the differences in the percentages of the main groups of prey between the three zones, a redundancy analysis (RDA) method was implemented using CANOCO software. Sparrows, rats, pine voles and striped field mice were most connected to the city center, whereas voles (all species pooled together), northern birch mice, hazel dormice and insects were more commonly found among prey items collected in rural areas. As the outskirts were transitional areas where different habitats typical for both rural areas (such as forest complexes) and urban areas (such as parks or built-up areas) were present, no prey group was strongly connected to this landscape. Mammals were dominant in the diet in winter in all habitat types. Their share ranged from 52% (in the city center) to approximately 90% in the outskirts and rural areas. Birds, amphibians, reptiles and insects were more frequent in summer. Overall, the study confirmed high plasticity of the species as an opportunistic predator and its ability to adapt to long-term changes in its main prey in most urbanized areas.
      PubDate: 2019-03-01
       
  • Biological control of growth promoting rhizobacteria against verticillium
           wilt of pepper plant
    • Abstract: Verticillium dahliae is one of the most important soil pathogens, causing verticillium wilt. It is well known that the use of chemical products against this pathogen is not without side effects on the environment. In this regard, the present study was aimed to search for antagonistic rhizobacteria as an alternative of biological control against this causal agent. A total of 162 isolates were screened for their antagonistic activity according to the “double layer” and the “well diffusion” methods. Three of them (RS11, SF82 and ZO4), were subsequently selected as biological control agent (BCAs) according to their efficiency and were identified by 16S rRNA sequencing and Biolog microplate GEN III as Bacillus spp. Using 10 different lipopeptide gene primers, PCR reactions only revealed the involvement of genes responsible for iturins (ituA, ituD, ituC), bacillomycin (bmyA) and Bacilysin (bacA / B-F, bacA / B-R) biosynthesis. The Plant Growth Promoting Rhizobacteria traits [enzymatic activities, phytohormones production] of the three BCAs were also studied in vitro then on pepper plant (Capsicum annuum L.), indicating that Bacillus subtilis ZO4 was the most effective, enhancing leaf, stem and root growth comparing to the control.
      PubDate: 2019-03-01
       
  • Occurrence of risk factors and antimicrobial resistance due to genes
           encoding extended–spectrum β-lactamase (ESBL) – and/or AmpC
           β-lactamase–producing Escherichia coli isolated from the hospitalised
           patients
    • Abstract: This survey was focused to gain insight into the emergence of antimicrobial resistance mechanisms within overall of 913 Escherichia coli isolates and risk factors for cohort of 77 randomly selected patients. Host–related risk factors mostly involved lower urinary tract disease 50 (64.9%) times, renal insufficiency in 28 (36.4%) subjects, introduced urinary catheter in 43 (55.8%) as well as previous antibiotic therapy within 66 (85.7%) patients. Out of all investigated E. coli, 726 (79.5%) were determined as ESBL producers, 43 (4.7%) ESBL and AmpC producers, 46 (5.1%) AmpC positive and 87 (9.5%) were multidrug–resistant. Most of the times were revealed the following genes: blaCTX–M 767 (84.0%, p < 0.001), blaTEM 682 (74.7%, p < 0.001), blaSHV 89 (9.7%, p = 0.001). Less frequently accounted for resistance determinants as follows genes: blaCIT 38 (4.2%), blaDHA 32 (3.5%, p = 0.001), blaEBC 17 (1.9%, p < 0.001) and blaFOX 21 (2.3%, p < 0.05). Concerning 32 (3.5%) E. coli isolates from bloodstream infections, 26 (81.2%) posed CTX–M-15 producers and 2 (6.2%) isolates were CTX–M-3 originators. Within presumed E. coli pathogens, RFLP assessment exhibited in 2 patterns extended–spectrum character of mutations on blaTEM genes encoding positions considering amino acid sites 104, 238 and 240. Regarding antimicrobial resistance, the lowest rate was ascertained toward meropenem (0.4%), ertapenem (3.8%), tigecycline (1.4%) and amikacin (6.3%).
      PubDate: 2019-03-01
       
 
 
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