碳丹胺调节土壤和树脂圈中代谢活跃的细菌种群
Soni Chauhan1,2, Udit Yadav1, Nasreen Bano1
1Microbial Technology Division, CSIR-National Botanical Research Institute, Lucknow, 226001, India.
Current microbiology
|July 13, 2023
概括
像Carbendazim这样的杀菌剂残留物可以在灌条件下促进土壤细菌的活动,特别是有机修订. 然而,它们可能会损害某些植物根球的微生物多样性,如玉米.
科学领域:
- 环境微生物学环境微生物学
- 土壤科学 土壤科学
- 农业化学 农业化学
背景情况:
- 杀菌剂残留物对土壤细菌群落产生影响,但其影响尚未完全理解.
- 杀菌剂的持久性取决于土壤条件和农业实践.
研究的目的:
- 调查Carbendazim杀菌剂残留物在各种农业处理下对土壤细菌群体的影响.
- 评估Carbendazim对土壤微生物活动,多样性和酶功能的影响.
主要方法:
- 实地试验处理方法:休土壤,农场肥 (FYM),大米草 (RS) 覆盖,玉米和三叶草种植.
- 在受水和未受水条件下测量土壤二氧化碳排放量.
- 16S rRNA元基因组测序以分析细菌社区结构.
- 对土壤关键酶活动 (脱酶,酸酶,葡萄糖酶,蛋白酶,尿酶) 的检测.
主要成果:
- 在灌条件下,Carbendazim在所有处理过程中显著增强了土壤二氧化碳排放量,除了地土壤外.
- 玉米树根球微生物群对Carbendazim最容易受到影响,显示Shannon多样性减少.
- 在玉米和大米草处理中,多样性指数普遍增加,其中蛋白质细菌占主导地位.
- 主要协调分析 (PCoA) 根据活动和治疗分离了微生物群落.
- 与地土相比,Carbendazim在玉米处理中显著增加了酶活性.
结论:
- 卡本达在代谢活跃的土壤中增强非标细菌的活性,但在休眠的微生物群中并非如此.
- 有机修改和作物种植 (玉米) 可能有助于通过增强细菌活动修复杀剂污染的土壤.
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