1887

Abstract

A novel indole-3-acetic acid-producing bacterium, designated TEGT-2, was isolated from the roots of collected from the Qinling Mountains in shaanxi province, northwestern China, and was subjected to a taxonomic study by using a polyphasic approach. Cells of strain TEGT-2 were Gram-stain-positive, strictly aerobic, endospore-forming rods and motile by means of peritrichous flagella. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain TEGT-2 was a member of the genus , exhibiting the highest sequence similarity to KCTC 13222 (97.9 %), CCTCC AB 2011150 (97.3 %), CCTCC AB 2013369 (96.9 %) and NBRC 15375 (96.5 %). The only menaquinone detected was MK-7, and the major fatty acid was anteiso-C. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, two unidentified aminophospholipids, two unidentified phospholipids, an unidentified aminolipid and two unidentified lipids. -Diaminopimelic acid was detected in the peptidoglycan. The DNA GC content was 46.6 mol%. DNA–DNA relatedness values for strain TEGT-2 with respect to its closest phylogenetic relatives KCTC 13222 and CCTCC AB 2011150 were lower than 40 %. Based on the phenotypic, phylogenetic and genotypic data, strain TEGT-2 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is TEGT-2 (=CCTCC AB 2015258=KCTC 33806).

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2017-03-01
2024-03-29
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