Genomic analysis of Marinomonas profundi M1K-6 T reveals its adaptation to deep-sea environment of the Mariana Trench.

Autor: Li Y; College of Life Sciences, Shanxi Agricultural University, Taigu 030801, China; State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China., Sun XM; College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266003, China., Dang YR; State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China., Liu NH; State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China., Qin QL; State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China., Zhang YQ; State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China. Electronic address: 201990900087@sdu.edu.cn., Zhang XY; State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China. Electronic address: zhangxiying@sdu.edu.cn.
Jazyk: angličtina
Zdroj: Marine genomics [Mar Genomics] 2022 Apr; Vol. 62, pp. 100935. Date of Electronic Publication: 2022 Feb 16.
DOI: 10.1016/j.margen.2022.100935
Abstrakt: The Mariana Trench is the deepest site on earth with diverse extreme conditions such as high hydrostatic pressure, low temperature and lack of light. Organisms surviving in this extreme environment and their life strategies have been largely uninvestigated. Here, we report the complete genome of Marinomonas profundi M1K-6 T , isolated from the Mariana Trench deep seawater. The assembled genome comprised 3,648,059 bp without any plasmid. Gene annotation showed that strain M1K-6 T possesses a series of genes encoding cold-shock proteins, DEAD box RNA helicase and enzymes for biosynthesis of unsaturated fatty acids, implying its high cold tolerance. Abundant genes responsible for transports of ion, branched-chain amino acids and organic compatible solutes were detected, which could maintain cellular osmotic balance disturbed by high hydrostatic pressure. In addition, detected genes (related to storage carbon, transport systems and two-component regulatory systems) could help strain M1K-6 T to improve its ecological fitness in the deep-sea microaerobic and nutrient-limiting environments. Genomic information on M. profundi M1K-6 T , provides insights into the adaptation strategies of Marinomonas spp. in the extreme deep-sea environment of the Mariana Trench.
(Copyright © 2022. Published by Elsevier B.V.)
Databáze: MEDLINE
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