Biodegradation of atrazine by the novel Citricoccus sp. strain TT3.

Abstract:

:A previously undescribed atrazine-degrading bacterial strain TT3 capable of growing with atrazine as its sole nitrogen source was isolated from soil at the wastewater outfall of a pesticide factory in China. Phenotypic characterization and 16S rRNA gene sequencing indicated that the isolate belonged to the genus Citricoccus. Polymerase chain reaction (PCR) analysis revealed that TT3 contained the atrazine-degrading genes trzN, atzB, and atzC. The range for growth and atrazine degradation of TT3 was found to be pH 6.0-11.0, with a preference for alkaline conditions. At 30°C and pH 7.0, the strain removed 50mg/L atrazine in 66h with 1% inoculum. These results demonstrate that Citricoccus sp. TT3 has great potential for bioremediation of atrazine-contaminated sites, particularly in alkaline environments. To the best of our knowledge, there are no previous reports of Citricoccus strains that degrade atrazine, and therefore this work provides a novel candidate for atrazine bioremediation.

journal_name

Ecotoxicol Environ Saf

authors

Yang X,Wei H,Zhu C,Geng B

doi

10.1016/j.ecoenv.2017.08.046

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

144-150

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(17)30542-0

journal_volume

147

pub_type

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