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评估石油污染对尼日尔三角洲土壤中的微生物群落的影响

Rakiya Muhammad¹, Christopher Boothman¹, Hokyung Song²

¹Department of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, University of Manchester, M13 9PL, UK.

The Science of the total environment

|March 21, 2024

概括

尼日尔三角洲的石油泄漏污染了土壤有机物和金属,减少了微生物的多样性. 然而,发现了油脂降解基因和特定的微生物,表明了泄漏后六个月自然生物修复的潜力.

科学领域:

环境科学环境科学
微生物学微生物学
地质化学地质化学

背景情况:

石油泄漏构成了全球环境威胁,释放有毒有机物和金属.
尼日尔三角洲地区经历了严重的长期石油污染,对土壤微生物群落和生物修复潜力的影响尚不清楚.

研究的目的:

评估石油泄漏对土壤微生物群落结构和多样性的影响.
调查聚环芳化合物环-氧化二氧化酶 (PAH-RHDGNα) 基因的分布,这对碳化合物降解至关重要.
评估在尼日尔三角洲污染的土壤中进行现场生物修复的潜力,在石油泄漏六个月后.

主要方法:

分析了土壤样本的有机和金属污染物 (Cr,Ni).
使用16S rRNA基因测序来评估微生物社区结构和多样性.
量化了PAH-RHDGNα基因的丰度和分布.

主要成果:

包括Cr和Ni在内的石油污染在整个受影响地区和深处得到证实.
受污染的土壤表现出较低的微生物多样性,主要细菌类 (,三角,α-蛋白质细菌,酸性细菌) 的变化.
PAH-RHDGNα基因仅在受污染的土壤中被检测到,与污染物和特定的微生物群体具有积极的相关性,表明活性碳化合物代谢.

结论:

流出六个月后,尼日尔三角洲的土壤仍然受到污染,对微生物多样性产生了重大影响.
PAH-RHDGNα基因的存在和分布表明,土著土壤微生物积极参与降解石油污染物.
调查结果强调了现场生物修复的潜力,以及在评估石油污染影响时跨学科方法的价值.

关键词:

生物修复是一种生物修复.碳化合物碳化合物是一种碳化合物.金属金属金属微生物社区的微生物社区.在PAH-RHDGNα基因中.土壤土壤土壤.

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