Natronobiforma cellulositropha gen. nov., sp. nov., a novel haloalkaliphilic member of the family Natrialbaceae (class Halobacteria) from hypersaline alkaline lakes

Systematic and Applied Microbiology
Dimitry Yu SorokinIlya V Kublanov

Abstract

Six strains of extremely halophilic and alkaliphilic euryarchaea were enriched and isolated in pure culture from surface brines and sediments of hypersaline alkaline lakes in various geographical locations with various forms of insoluble cellulose as growth substrate. The cells are mostly flat motile rods with a thin monolayer cell wall while growing on cellobiose. In contrast, the cells growing with cellulose are mostly nonmotile cocci covered with a thick external EPS layer. The isolates, designated AArcel, are obligate aerobic heterotrophs with a narrow substrate spectrum. All strains can use insoluble celluloses, cellobiose, a few soluble glucans and xylan as their carbon and energy source. They are extreme halophiles, growing within the range from 2.5 to 4.8M total Na+ (optimum at 4M) and obligate alkaliphiles, with the pH range for growth from 7.5 to 9.9 (optimum at 8.5-9). The core archaeal lipids of strain AArcel5T were dominated by C20-C20 dialkyl glycerol ether (DGE) (i.e. archaeol) and C20-C25 DGE in nearly equal proportion. The 16S rRNA gene analysis indicated that all six isolates belong to a single genomic species mostly related to the genera Saliphagus-Natribaculum-Halovarius. Taking together a substantial phenot...Continue Reading

Citations

Jun 6, 2019·International Journal of Systematic and Evolutionary Microbiology·Dimitry Y SorokinJaap S Sinninghe Damsté
Apr 2, 2019·Frontiers in Microbiology·Nicole J BaleJaap S Sinninghe Damsté
Apr 24, 2020·World Journal of Microbiology & Biotechnology·Ganapathi UmaThavasimuthu Citarasu
Feb 26, 2019·International Journal of Systematic and Evolutionary Microbiology·Dimitry Y SorokinIlya V Kublanov
Aug 8, 2020·Proceedings of the National Academy of Sciences of the United States of America·Violetta La ConoMichail M Yakimov
Nov 27, 2020·Biotechnology and Bioengineering·Lakshmi Kasirajan, Julie A Maupin-Furlow
Jan 28, 2021·FEMS Microbiology Ecology·Rebecca C MuellerBrent M Peyton

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Datasets Mentioned

BETA
MG940906
MG940907
JCM31939
Alternative

Methods Mentioned

BETA
electron microscopy

Software Mentioned

Mega
CLC Genomics Workbench
MAFFT
Muscle

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