Details

Autor(en) / Beteiligte

• Wang, Shuang
• Sun, Lei
• Wei, Dan
• Salam, Nimaichand
• Fang, Bao-Zhu
• Dong, Zhou-Yan
• Hao, Xiao-Yu
• Zhang, Mingyi
• Zhang, Zhe
• Li, Wen-Jun

Titel

Nesterenkonia haasae sp. nov., an alkaliphilic actinobacterium isolated from a degraded pasture in Songnen Plain

Ist Teil von

• Archives of microbiology, 2021-04, Vol.203 (3), p.959-966

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2021

Quelle

SpringerLink

Beschreibungen/Notizen

• An alkaliphilic actinobacterial strain, designated Hz 6-5 T , was isolated from saline-alkaline soil from Songnen Plain in north-eastern China. The isolate formed light yellow-colored colonies and its cells were Gram-staining positive, non-motile, and non-spore-forming short rods. The strain was aerobic with optimal growth at 33 °C, pH 9.0, and in the presence of 0.5% ( w / v ) NaCl or 3% ( w / v ) KCl. It was catalase-positive and oxidase-negative. The isolate had highest 16S rRNA gene sequence similarities to the type strains of the species Nesternkonia natronophila M8 T (98.2%), N. salmonea GY074 T (98.1%), and N. sphaerica GY239 T (97.4%), and the isolate formed a subclade with the type strains of these species in the neighbor-joining tree based on the 16S rRNA gene sequences. The phylogenetic tree based on the phylogenomic analysis also showed the same results. The DNA‒DNA relatedness (DDH) values of isolate Hz 6-5 T with N . natronophila M8 T , N . halophila DSM 16378 T , and N . halobia CGMCC 1.2323 T were 21.2%, 36.5%, and 32.0%, respectively. The characteristic diamino acid of strain Hz 6-5 T was found to be lysine. The respiratory quinones were MK-9, MK-8, MK-7(H 4 ), MK-7(H 2 ) and MK-7 and the major cellular fatty acids (> 10%) were anteiso-C 15:0 , anteiso-C 17:0 and iso-C 16:0 . The polar lipids detected for strain Hz 6-5 T were diphosphatidylglycerol, phosphatidylcholine, phosphatidylglycerol, phosphatidylinositol, an unidentified glycolipid, and two unidentified phospholipids. The DNA G + C content of isolate Hz 6-5 T was 60.8%. Based on the results of phylogenetic analysis supported by morphological, physiological, chemotaxonomic, and other differentiating phenotypic evidence, strain Hz 6-5 T is considered to represent a novel species of the genus Nesterenkonia , for which the name Nesterenkonia haasae sp. nov. is proposed. The type strain is Hz 6-5 T (=CPCC 205100 T =NBRC 113521 T ).