在土壤细菌群体中由氨酸介导的变化促进了循环和植物生长
Zengwei Feng1, Xiaolin Xie2, Peidong Wu3
1College of Horticulture, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Guangdong Engineering Research Center for Litchi, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agricultural Microbiomics and Precision Application (MARA), Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Key Laboratory of Agricultural Microbiome (MARA), State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China.
土壤氨基酸 (AAs) 调节细菌群落和循环. 氨 (Phe) 通过促进有益细菌和抑制有害细菌显著促进了植物生长.
科学领域:
- 土壤科学 土壤科学
- 微生物学 微生物学
- 植物科学 植物科学
背景情况:
- 土壤氨基酸 (AAs) 是微生物活动和植物营养的关键 (N) 源.
- 了解外源性AA如何影响土壤微生物群落和N循环对于可持续农业至关重要.
研究的目的:
- 研究外源氨基酸对土壤细菌群落和循环的调节作用.
- 确定单个氨基酸,特别是氨酸 (Phe) 对土壤特性,细菌组成和植物生长的差异性影响.
主要方法:
- 用富含亚糖的基于羽毛 (克拉) 的堆肥应用于Poncirus trifoliata (L.) 植物.
- 单个应用六个选定的AAs,包括氨 (Phe),以评估特定的影响.
- 使用冗余分析分析土壤水解AA含量,氨一氧化酶基因丰度,植物生长参数和细菌群体结构的分析.
主要成果:
- 堆肥应用显著增加了土壤AAs,氨基单氧化酶基因丰富度和植物生长,改变了细菌社区结构.
- 氨基酸对细菌群体的组成的影响比土壤的化学特性更大.
- 氨 (Phe) 在测试的个体AA中对N循环酶活性,植物生长和细菌群体转移表现出最显著的积极影响.
结论:
- 土壤氨基酸极大地塑造了土壤细菌群落,并影响了循环.
- 氨 (Phe) 通过调节细菌种群来增强植物生长和N循环,促进有益的微生物,同时抑制潜在有害的微生物.
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