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Information × Registration Number 0224U033041, (0124U004192) , R & D reports Title Characteristics of the rhizosphere actinobiome of Deschampsia antarctica E. Desv. in soils with different elemental composition popup.stage_title Характеристика актинобіому ризосфери Deschampsia antarctica E. Desv. у відмінних за елементним складом ґрунтах Head Oleksandr M. Gromyko, Кандидат біологічних наук Registration Date 16-12-2024 Organization Ivan Franko National University of Lviv popup.description1 Study of the phylogenetic diversity of D. antarctica rhizosphere actinomycetes on the territory of Galindez Island and their biological properties; forming a collection of actinomycetes strains - promising producers of bioactive compounds and/or phytostimulants popup.description2  A comparative phylogenetic characterization of isolates of actinomycetes of the rhizosphere of D. antarctica in habitats with different elemental composition was carried out and they were classified into 11 genera: Amorphoplanes, Embleya, Kribbella, Lentzea, Micromonospora, Nocardia, Rhodococcoides, Rhodococcus, Saccharopolyspora, Streptomyces and Winogradskya. Potential producers of iron, copper, nickel, zinc and manganese siderophores were identified. Among the rhizosphere isolates of the D5 site (foot of Mount Anna), the highest percentage of phosphate and zinc-solubilizing strains was found. Strains resistant to zinc, nickel and cadmium were identified. Fourteen strains supported growth on a medium with a high sodium chloride content. Inoculation of plants with the Streptomyces sp. Da 82-17 stimulated an increase in the content of chlorophylls and carotenoids, including under cold stress conditions. The genome of the Streptomyces sp. Da 82-17 strain was sequenced and annotated. Genes for the metabolism of sugars, amino acids, pyruvate, glyoxylate, dicarboxylates, propanoate, butyrate and inositol phosphates were identified, as well as a set of nar and nir genes responsible for the reduction of nitrates to ammonia, as well as genes associated with the destruction of xenobiotics. Numerous transporters were identified, including metal ions Zn(II), Fe(III), Co(II), Ni(II). The strain demonstrates mechanisms of adaptation to adverse conditions, including a response to phosphorus and potassium deficiency, adaptation to low temperatures, tolerance to salt stress, resistance to glycopeptides and lantibiotics. Product Description popup.authors Roman Ivan I. Fedorenko Viktor O. popup.nrat_date 2024-12-16 Close