Metagenomic analysis reveals mechanisms of atrazine biodegradation promoted by tree species

被引：36

作者：

Aguiar, Luciana Monteiro ^{[1
]}

Souza, Matheus de Freitas ^{[2
]}

de Laia, Marcelo Luiz ^{[3
]}

Melo, Janaina de Oliveira ^{[4
]}

da Costa, Marcia Regina ^{[1
]}

Goncalves, Janaina Fernandes ^{[3
]}

Silva, Daniel Valadao ^{[2
]}

dos Santos, Jose Barbosa ^{[1
]}

机构：

[1] Univ Fed Vales Jequitinhonha & Mucuri, Plant Prod Dept, Diamantina, MG, Brazil

[2] Univ Fed Rural Semi Arido, Dept Agr & Forestry Sci, Mossoro, RN, Brazil

[3] Univ Fed Vales Jequitinhonha & Mucuri, Dept Forest Engn, Diamantina, MG, Brazil

[4] Univ Fed Vales Jequitinhonha & Mucuri, Dept Basic Sci, Diamantina, MG, Brazil

来源：

ENVIRONMENTAL POLLUTION | 2020年 / 267卷

关键词：

Atrazine degradation genes; Microorganisms; New generation sequencing; AGRICULTURAL SOILS; WATER; PHYTOREMEDIATION; EFFICIENCY; NITRATE; IDENTIFICATION; REMEDIATION; SORPTION;

D O I：

10.1016/j.envpol.2020.115636

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Metagenomics has provided the discovery of genes and metabolic pathways involved in the degradation of xenobiotics. Some microorganisms can metabolize these compounds, potentiating phytoremediation in association with plant. This study aimed to study the metagenome and the occurrence of atrazine degradation genes in rhizospheric soils of the phytoremediation species Inga striata and Caesalphinea ferrea. The genera of microorganisms predominant in the rhizospheric soils of I. striata and C. ferrea were Mycobacterium, Conexibacter, Bradyrhizobium, Solirubrobacter, Rhodoplanes, Streptomyces, Geothrix, Gaiella, Nitrospira, and Haliangium. The atzD, atzE, and atzF genes were detected in the rhizospheric soils of I. striata and atzE and atzF in the rhizospheric soils of C. ferrea. The rhizodegradation by both tree species accelerates the degradation of atrazine residues, eliminating toxic effects on plants highly sensitive to this herbicide. This is the first report for the species Agrobacterium rhizogenes and Candidatus Muproteobacteria bacterium and Micromonospora genera as atrazine degraders. (c) 2020 Elsevier Ltd. All rights reserved.

引用

页数：10

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