Abstract
An alkaliphilic and halophilic actinomycete strain, designated EGI 80537T, was isolated from a saline-alkali soil sample of Xinjiang, north-west China and subjected to a taxonomic characterization using a polyphasic approach. Strain EGI 80537T formed reticulate long aerial hyphae. Whole-cell hydrolysates of the isolate contained meso-diaminopimelic acid as the cell-wall diamino acid and mannose as the diagnostic sugar. The major fatty acids identified were iso-C16 : 0, anteiso-C17 : 0 and 10-methyl-C18 : 0 (TBSA). The predominant menaquinones detected were MK-10(H8) and MK-10(H6). The G+C content of the genomic DNA of strain EGI 80537T was 67.6 mol%. Strain EGI 80537T showed the highest 16S rRNA gene sequence similarity to Allosalinactinospora lopnorensis CA15-2T (96.7 %). Phylogenetic analysis showed that strain EGI 80537T clustered with the members of the family Nocardiopsaceae. Based on phenotypic, chemotaxonomic and phylogenetic characteristics, strain EGI 80537T represents a novel species of a new genus in the family Nocardiopsaceae, for which the name Lipingzhangella halophila gen. nov., sp. nov. is proposed. The type strain of the type species is EGI 80537T(=CGMCC 4.7224T= DSM 102030T).
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