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.

元基因组学提供了与异种生物降解有关的基因和代谢途径的发现。一些微生物可以代谢这些化合物，从而增强与植物相关的植物修复作用。本研究旨在研究植物修复纹In（Inga striata）和凯撒（Caesalphinea ferrea）植物根际土壤中的阿特拉津降解基因的基因组和发生。微生物的属为主的在根际土壤I.纹状体和C.铁力木是分枝杆菌，Conexibacter，慢生根瘤菌，Solirubrobacter，Rhodoplanes，链霉菌属，Geothrix，Gaiella，Nitrospira和Haliangium。的atzD，atzE，和atzF在根际土壤中检测到的基因I.纹状体和atzE和atzF在根际土壤C.铁力木。两种树木的根际降解都加速了阿特拉津残留物的降解，从而消除了对这种除草剂高度敏感的植物的毒性作用。这是发根农杆菌和假丝酵母念珠菌细菌和微单孢菌属的首次报道 属阿特拉津降解剂。