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Biodegradation of phenol by a highly tolerant strain Rhodococcus ruber C1: Biochemical characterization and comparative genome analysis.

Abstract：

:A novel phenol-degrading strain was isolated and identified as Rhodococcus ruber C1. The degradation analysis shows that 1806 mg/L of phenol can be completely degraded by strain C1 within 38 h, and the maximum specific growth rate (μmax=1.527 h-1) and maximum specific phenol degradation rate (qmax=3.674 h-1) indicate its excellent phenol metabolism capability. More importantly, phenol can be degraded by strain C1 in the temperature range of 20-45 °C within 72 h, and with longer degradation time, phenol can be completely degraded even at 10, 15 and 50 °C. The whole genome of strain C1 was sequenced, and a comparative genome analysis of strain C1 with 36 other genomes of Rhodococcus was performed. A remarkable gene family expansion occurred during the evolution of Rhodococcus, and a comprehensive evolutionary picture of Rhodococcus at genomic level was presented. Moreover, the copy number of genes involved in phenol metabolism was compared among genus Rhodococcus, and the results demonstrate high phenol degradation capability of strain C1 at genomic level. These findings suggest that Rhodococcus ruber C1 is a bacterium capable of degrading phenol efficiently in the temperature range of 10-50 °C.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Zhao T,Gao Y,Yu T,Zhang Y,Zhang Z,Zhang L,Zhang L

doi

10.1016/j.ecoenv.2020.111709

subject

Has Abstract

pub_date

2021-01-15 00:00:00

pages

111709

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(20)31546-3

journal_volume

208

pub_type

杂志文章

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