甲基酸盐降解的内菌细菌联盟的殖民化改变了植物中的细菌群体和酶活性
Xiangzhi Zuo1, Shuai Zhang1, Wanting Ling1
1Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
Environmental pollution (Barking, Essex : 1987)
|October 7, 2024
概括
内生细菌联盟EN有效地修复土壤和生菜中的甲酸盐 (PAE). 殖民增强了植物生长,改变了土壤细菌群落,并提高了植物的耐药性.
科学领域:
- 环境微生物学环境微生物学
- 生物修复是一种生物修复.
- 植物与微生物的相互作用
背景情况:
- 酸盐 (PAE) 是广泛存在的环境污染物,对生态系统和人类健康构成风险.
- 内生细菌显示出减轻PAE污染的潜力.
- 对于内菌菌殖民如何影响与植物相关的细菌群落的理解有限.
研究的目的:
- 调查一种内生细菌联盟 (EN) 在土壤植物系统中降解PAE的有效性.
- 评估联盟EN殖民对生菜生长和减少PAE的影响.
- 为了分析在EN殖民之后的生菜内生菌菌群体结构的变化.
主要方法:
- 通过种子浸泡,根灌,叶子喷和联合喷-灌,与EN财团一起殖民.
- 在土壤中的PAE降解和在生菜组织中的减少的量化.
- 高通量测序用于分析细菌群体组成的变化.
- 在生菜中测定过氧化酶和酶活性.
主要成果:
- 联合喷-灌方法产生了优异的PAE降解 (从土壤中去除40.54%).
- 与对照组相比,在生菜中的残留PAE显著减少了94.05%.
- 财团EN殖民化显著增加了Pseudomonas属的相对丰度 (P < 0.01).
- 在殖民中观察到过氧化酶和酶的增强活性,这表明植物耐药性得到改善.
结论:
- 内生细菌联盟EN有效地修复土壤-植物系统中的PAE,特别是通过联合喷-灌.
- 集团EN殖民对植物生长,PAE减少和植物防御机制产生积极影响.
- 细菌群体的转移,特别是 Pseudomonas 的增加,与PAE 生物修复和增强植物健康有关.
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