Abstract—

Analysis of the taxonomic structure of prokaryotic microbial complexes of the saline soils in the Lake Elton area and their comparative characteristics were carried out for a soil catena along the Khara River flowing into the hypersaline Lake Elton. High-throughput pyrosequencing detected 11 bacterial and 2 archaeal phyla. Comparative analysis of community structure revealed the differences between Solonchaks located at the river flood land and Kastanozems at the slope and top of the river terrace. The patterns of occurrence were described for six predominant phyla (Euryarchaeota, Thaumarchaeota, Proteobacteria, Firmicutes, Bacteroidetes, and Actinobacteria). For the floodplain soils, the relations between the distribution of Euryarchaeota, Thaumarchaeota, Firmicutes, Actinobacteria, Proteobacteria and soil salinity as well as soil pH were described. Occurrence of members of the phyla Euryarchaeota, Thaumarchaeota, Firmicutes, Actinobacteria, and Proteobacteria in flood land soils was shown to depend on the soil salinity and pH. Members of the phyla Actinobacteria and Firmicutes were shown to predominate in Gleyic Kastanozems . Cloning of the 16S rRNA gene revealed high diversity within the genus Streptomyces (Actinobacteria). A number of the isolated streptomycete clones were homologous to the known antibiotic producers, which indicates that soils of this area are promising for further biotechnological screening.

中文翻译：

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喀拉河沿岸土壤链上埃尔顿湖地区盐渍土中的原核生物群落

摘要—

分析了埃尔顿湖地区盐渍土壤原核微生物复合物的分类结构及其比较特征，分析了沿哈拉河流入高盐湖埃尔顿湖的土壤链。高通量焦磷酸测序检测到11个细菌和2个古细菌门。群落结构的比较分析表明，位于河滩地的索伦察克人与沿河阶地和顶部的Kastanozems之间存在差异。描述了六种主要门（Euryarchaeota，Thaumarchaeota，变形杆菌，Firmicutes，Bacteroidetes和Actinobacteria）的发生模式。）。对于洪泛区土壤，描述了Euryarchaeota，Thaumarchaeota，Firmicutes，放线菌，Proteobacteria和土壤盐度以及土壤pH值之间的关系。该门类的成员发生广古菌门，Thaumarchaeota，厚壁菌门，放线菌和变形菌在河滩土壤被证明取决于土壤盐度和pH值。该门类的成员，放线菌和厚壁菌显示出占主导地位潜育Kastanozems。16S rRNA基因的克隆揭示了链霉菌属（放线菌属）内的高度多样性）。许多分离的链霉菌克隆与已知的抗生素生产者同源，这表明该地区的土壤有望用于进一步的生物技术筛选。