Tóth, B. Bóka, K. Rothmann, L. A. Moloi, M. J.
Published in
Biology Bulletin
AbstractPhysiological structures, components and elements are critical for cultivating a healthy crop. The use of alternative products to promote plant growth and health is required for a growing demand. Leaf chlorophyll concentration, chloroplast ultrastructure as well as element concentration in the shoots and roots of maize treated with industri...
Poursalem, S. Amininasab, S. M. Zamani, N. Almasieh, K. Mardani, M.
Published in
Biology Bulletin
AbstractAwareness of the habitat needs of top predators is vital for viability of wildlife populations. During 2017–2018, 32 points of presence signs of the Persian leopard (Panthera pardus saxicolor) were spotted and they were associated to 6 environmental variables. The maximum entropy (Maxent) model was used to predict the distribution of Persia...
Salaria, N. Furhan, J.
Published in
Biology Bulletin
AbstractActinomycetes derived from unfamiliar surroundings are considered as a promising supply for novel bioactive compounds comprising a broad range of biological actions. The current study was carried out to find out the bioactive adjacent to resistant pathogenic strains. During the study, 46 strains of actinomycetes were isolated from the soil ...
Asayesh, G. Mohebbi, G. H. Nabipour, I. Rezaei, A. Vazirizadeh, A.
Published in
Biology Bulletin
AbstractDifferent extracts of solitary marine tunicates have attracted attention as a source of amazing secondary metabolites with a wide range of promising potential biological effects. In the current study the antibacterial activity of the Persian Gulf marine tunicate “Phallusia nigra,” against the Staphylococcus aureus, Staphylococcus epidermidi...
Boulion, V. V.
Published in
Biology Bulletin
AbstractThe ecological role of the extracellular production of phytoplankton is discussed. The experiments based on a radiocarbon method combined with differential filtration of water samples have shown that approximately 20% of the phytoplankton production is transformed into bacterial production in marine and fresh waters of different trophic sta...
Frisman, E. Ya. Zhdanova, O. L. Kulakov, M. P. Neverova, G. P. Revutskaya, O. L.
Published in
Biology Bulletin
AbstractThe second part of this article focuses on subjects devoted to mathematical modeling of the evolution of limited populations and migration affecting the dynamics of coupled populations and the patterns of their spatial distribution. The purpose of this article is to present developed approaches and mathematical discrete-time models to study...
Zotin, A. A. Ieshko, E. P.
Published in
Biology Bulletin
AbstractIndividual linear growth was studied in 23 specimens of the freshwater pearl mussel Margaritifera margaritifera by measuring successive annual growth rings on the shell surface. It is demonstrated that the growth of each mussel can be described by a single equation, of which a particular case is the von Bertalanffy equation with an average ...
Israyelyan, A. Karapetyan, K. Arstamyan, L. Alexsanyan, L.
Published in
Biology Bulletin
AbstractIn order to obtain starter cultures for new fermented milk products, the influence of growing conditions (temperature, the ratio of the number of lactic acid bacteria introduced (LAB)) on the interaction of LAB with probiotic properties was studied. The manifestation of organoleptic, antimicrobial properties is shown when using compositions...
Kupriyanova, L. A. Safronova, L. D. Sycheva, V. B. Danielyan, F. D. Petrosyan, V. G.
Published in
Biology Bulletin
AbstractIn parthenogenetic hybrid Darevskia armeniaca species, the development of early oogenesis and early meiosis were analyzed. It has been shown for the first time that the number of synаptonemal complexes (SCs) of bivalents during the stages of early pachуtena–diplotena of the meiotic prophase 1 is constantly equal to the haploid number, 19. T...
Osipov, S. V.
Published in
Biology Bulletin
AbstractThis paper reviews the combined indexes created to reflect the importance of a species (species population) in an individual biocoenosis, in a region (regional or spatial complex), and in a class (type) of biocoenoses. The main features of the indexes, such as the parameters included, structures of formulas, areas of applicability, and limi...
