1887

Abstract

A haloarchaeal strain (ESP3B_9) 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). Mg 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_9 and JCM 10989 and ATCC 43099 were 96.53 and 96.25 % respectively. The similarities of the RNA polymerase subunit B gene between strain ESP3B_9 and JCM 10989 and ATCC 43099 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_9 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is ESP3B_9 (MCC 3419=JCM 33002=KCTC 4279=CGMCC 1.16737).

Funding
This study was supported by the:
  • Department of Biotechnology, Ministry of Science and Technology, http://dx.doi.org/10.13039/501100001407 (Award BT/Coord.II/01/03/2016)
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2020-01-22
2024-03-29
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