期刊
GENOMICS
卷 111, 期 6, 页码 1802-1814出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ygeno.2018.12.003
关键词
Genome sequencing; Halomonas desertis; Crude oil biodegradation; Biosurfactant production; Osmoadaptation; Metabolic pathways
资金
- European Union in the ambit of the Project ULIXES project (European Community's Seventh Framework Program, CP-FP-SICA) [FP7-KBBE-2010-4, 266473]
- South African/Tunisia-research partnership programme bilateral agreement 2014 in the ambit of AADMEN project [6617000101]
- PhosAgro/UNESCO/IUPAC partnership in the ambit of the Green Chemistry for Life grant programme [45003552865]
- Tunisian Ministry of Higher Education and Scientific Research in the ambit of the laboratory Project [LR11ES31]
Here, we report the genomic features and the bioremediation potential of Halomonas desertis G11, a new halophilic species which uses crude oil as a carbon and energy source and displays intrinsic resistance to salt stress conditions (optimum growth at 10% NaCl). G11 genome (3.96 Mb) had a mean GC content of 57.82%, 3622 coding sequences, 480 subsystems and 64 RNA genes. Annotation predicted 38 genes involved in osmotic stress including the biosynthesis of osmoprotectants glycine-betaine, ectoine and osmoregulated periplasmic glucans. Genome analysis revealed also the versatility of the strain for emulsifying crude oil and metabolizing hydrocarbons. The ability of G11 to degrade crude oil components and to secrete a glycolipid biosurfactant with satisfying properties was experimentally confirmed and validated. Our results help to explain the exceptional capacity of G11 to survive at extreme desertic conditions, and highlight the metabolic features of this organism that has biotechnological and ecological potentialities.
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