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Characterization of the genome of a Nocardia strain isolated from soils in the Qinghai-Tibetan Plateau that specifically degrades crude oil and of this biodegradation

Author:
Yang, Ruiqi, Liu, Guangxiu, Chen, Tuo, Li, Shiweng, An, Lizhe, Zhang, Gaosen, Li, Guoli, Chang, Sijing, Zhang, Wei, Chen, Ximing, Wu, Xiukun, Zhang, Binglin
Source:
Genomics 2019 v.111 no.3 pp. 356-366
ISSN:
0888-7543
Subject:
Nocardia soli, bacteria, biodegradation, biosurfactants, emulsifying, environmental factors, gene transfer, genes, genomic islands, niches, petroleum, polluted soils, sequence analysis, China
Abstract:
A strain of Nocardia isolated from crude oil-contaminated soils in the Qinghai-Tibetan Plateau degrades nearly all components of crude oil. This strain was identified as Nocardia soli Y48, and its growth conditions were determined. Complete genome sequencing showed that N. soli Y48 has a 7.3 Mb genome and many genes responsible for hydrocarbon degradation, biosurfactant synthesis, emulsification and other hydrocarbon degradation-related metabolisms. Analysis of the clusters of orthologous groups (COGs) and genomic islands (GIs) revealed that Y48 has undergone significant gene transfer events to adapt to changing environmental conditions (crude oil contamination). The structural features of the genome might provide a competitive edge for the survival of N. soli Y48 in oil-polluted environments and reflect the adaptation of coexisting bacteria to distinct nutritional niches.
Agid:
6137906