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Complete genome of Nocardioides aquaticus KCTC 9944T isolated from meromictic and hypersaline Ekho Lake, Antarctica

Cited 1 time in wos
Cited 1 time in scopus
Title
Complete genome of Nocardioides aquaticus KCTC 9944T isolated from meromictic and hypersaline Ekho Lake, Antarctica
Other Titles
남극 에코 호수에서 분리된 Nocardioides aquaticus 미생물의 전장 유전체 해독
Authors
Hwang, Kyuin
Choe, Hanna
Kim, Kyung Mo
Subject
Genetics & HereditMarine & Freshwater Biology
Keywords
adaptationgradientsalinitytemperaturetolerance
Issue Date
2022-04
Citation
Hwang, Kyuin, Choe, Hanna, Kim, Kyung Mo. 2022. "Complete genome of Nocardioides aquaticus KCTC 9944T isolated from meromictic and hypersaline Ekho Lake, Antarctica". MARINE GENOMICS, 62(1): 1-4.
Abstract
Nocardioides aquaticus KCTC 9944(T) is an aerobic, non-motile, Gram-positive, psychrotolerant, non-spore-forming bacterium isolated from the surface water of Ekho Lake in the Vestfold Hills, East Antarctica. This meromictic lake separated from Antarctic seawater thousands of years ago exhibits steep gradients of salinity and temperature in the upper layer of the water column. The cells of N. aquaticus thriving in Ekho Lake are able to grow in wide ranges of temperature (3 to 43.5 degrees C) and salinity (0 to 15% NaCl). Here, we sequenced the complete genome of N. aquaticus KCTC 9944(T), aiming to better understand the adaptation of this bacterium to the strong environmental gradients at the molecular level. The genome consists of 4,580,814 bp (G + C content of 73.2%) with a single chromosome, 4432 protein-coding genes, 51 tRNAs and 2 rRNA operons. The genome possesses genes for the Entner-Doudoroff pathway, photoheterotrophy, the conversion of acetate to acetyl-CoA, gluconeogenesis, and energy storage that are all advantageous to oligotrophic bacteria. The presence of genes involved in osmotic balance, fatty acid desaturation, cold and heat shock responses, and the oxygen affinities of respiratory oxidases are likely associated with high tolerance to strong gradients of salinity, temperature and oxygen concentration.
URI
https://repository.kopri.re.kr/handle/201206/13306
DOI
http://dx.doi.org/10.1016/j.margen.2021.100889
Type
Article
Station
해당사항없음
Indexed
SCIE
Appears in Collections  
2021-2021, Ecophysiology of Antarctic terrestrial organisms to reveal mechanisms of adaptation to changing environment (21-21) / Lee, Hyoungseok (PE21130)
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