首页> 外文期刊>International Journal of Phytoremediation >Successful phytoremediation of crude-oil contaminated soil at an oil exploration and production company by plants-bacterial synergism
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Successful phytoremediation of crude-oil contaminated soil at an oil exploration and production company by plants-bacterial synergism

机译:通过植物 - 细菌协同作用,石油勘探和生产公司原油污染土壤的成功植物修复

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摘要

Phytoremediation is a promising approach for the cleanup of soil contaminated with petroleum hydrocarbons. This study aimed to develop plant-bacterial synergism for the successful remediation of crude oil-contaminated soil. A consortia of three endophytic bacteria was augmented to two grasses, Leptochloa fusca and Brachiaria mutica, grown in oil-contaminated soil (46.8 g oil kg(-1) soil) in the vicinity of an oil exploration and production company. Endophytes augmentation improved plant growth, crude oil degradation, and soil health. Maximum oil degradation (80%) was achieved with B. mutica plants augmented with the endophytes and it was significantly (P & 0.05) higher than the use of plants or bacteria individually. Moreover, endophytes showed more persistence, the abundance and expression of alkB gene in the rhizosphere as well as in the endosphere of the tested plants than in unvegetated soil. A positive relationship (r = 0.70) observed between gene expression and crude oil reduction indicates that catabolic gene expression is important for hydrocarbon mineralization. This investigation showed that the use of endophytes with appropriate plant is an effective strategy for the cleanup of oil-contaminated soil under field conditions.
机译:植物修复是一种有希望的方法,用于清理用石油烃污染的土壤。本研究旨在为原油污染土壤的成功修复发展植物细菌协同作用。在石油勘探和生产公司附近增强了三种内心细菌的三个内心细菌,Leptochloa Fusca和Brachiaria mutica,在油污染的土壤中生长(46.8克油(-1)土壤)。 Endophytes增强改善植物生长,原油降解和土壤健康。通过增强内心细胞的B. mutica植物实现了最大的油降解(80%),并且它显着(P& 0.05)比单独使用植物或细菌。此外,Endophytes表现出更持久性,碱基因在根际的富度和表达,以及在测试植物的难度中而不是在未凝结的土壤中。在基因表达和原油还原之间观察到的阳性关系(R = 0.70)表明分解代谢基因表达对于烃矿化是重要的。本研究表明,使用适当植物的内心细胞是在现场条件下清除油污土的有效策略。

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