Natrialba swarupiae sp. nov., a halophilic archaeon isolated from a hypersaline lake in India
S Kajale, N Deshpande, S Pali… - … of systematic and …, 2020 - microbiologyresearch.org
International journal of systematic and evolutionary …, 2020•microbiologyresearch.org
A haloarchaeal strain (ESP3B_9T) was isolated from the salt pan of Sambhar salt lake,
Rajasthan, India. Cells were coccoid, non-motile, Gram-stain-negative and formed reddish-
pink pigmented colonies. The strain was aerobic, able to grow at 35–55° C (optimum, 40°
C), in 20–35%(25%) NaCl and pH 8–10 (pH 9). Mg2+ not required for growth. The cells
were lysed in distilled water and the minimum NaCl concentration that prevented cell lysis
was 5% w/v. The 16S rRNA gene sequence similarities between strain ESP3B_9T and …
Rajasthan, India. Cells were coccoid, non-motile, Gram-stain-negative and formed reddish-
pink pigmented colonies. The strain was aerobic, able to grow at 35–55° C (optimum, 40°
C), in 20–35%(25%) NaCl and pH 8–10 (pH 9). Mg2+ not required for growth. The cells
were lysed in distilled water and the minimum NaCl concentration that prevented cell lysis
was 5% w/v. The 16S rRNA gene sequence similarities between strain ESP3B_9T and …
A haloarchaeal strain (ESP3B_9T) was isolated from the salt pan of Sambhar salt lake, Rajasthan, India. Cells were coccoid, non-motile, Gram-stain-negative and formed reddish-pink pigmented colonies. The strain was aerobic, able to grow at 35–55 °C (optimum, 40 °C), in 20–35 % (25 %) NaCl and pH 8–10 (pH 9). Mg2+ not required for growth. The cells were lysed in distilled water and the minimum NaCl concentration that prevented cell lysis was 5 % w/v. The 16S rRNA gene sequence similarities between strain ESP3B_9T and Natrialba hulunbeirensis JCM 10989T and Natrialba magadii ATCC 43099T were 96.53 and 96.25 % respectively. The similarities of the RNA polymerase subunit B gene between strain ESP3B_9T and N. hulunbeirensis JCM 10989T and N. magadii ATCC 43099T were 84.47 and 84.9 % respectively. Genome sequencing revealed a genome size of 4.20 Mbp with DNA G+C content of 62.5 mol%. The major polar lipids were phosphotidylglycerol and phosphatidylglycerol phosphate methyl esters with minor amounts of unidentified lipids. The results of polyphasic analysis determined that strain ESP3B_9T represents a novel species of the genus Natrialba , for which the name Natrialba swarupiae sp. nov. is proposed. The type strain is ESP3B_9T (MCC 3419T=JCM 33002T=KCTC 4279T=CGMCC 1.16737T).
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