土壤中的天然植物疾病抑制作用延伸到昆虫害虫防治
Nadine Harmsen1,2, Pilar Vesga1,3, Gaétan Glauser4
1Department of Fundamental Microbiology, University of Lausanne, Lausanne, Switzerland.
Microbiome
|July 16, 2024
概括
抑制植物疾病的天然土壤也可以防止昆虫害虫. 这种保护涉及有益的细菌和植物初始化,创造了弹性土壤-植物-昆虫相互作用.
科学领域:
- 土壤微生物学 土壤微生物学
- 植物与昆虫的相互作用
- 生态生态学 生态生态学
背景情况:
- 瑞士纽沙泰尔湖附近的土壤以抑制Thielaviopsis basicola (黑色根腐烂) 而闻名.
- 这些土壤对昆虫害虫的有效性以前没有研究过.
研究的目的:
- 调查土壤的自然抑制力是否延伸到对昆虫害虫的保护.
- 了解这种扩展保护背后的机制.
主要方法:
- 研究了抑制性土壤对被叶子食昆虫Oulema melanopus感染的植物的影响.
- 分析了植物的应激反应,植物激素水平和佐类药物.
- 在昆虫压力下表征了树根球微生物组组成和网络稳定性.
- 检查了昆虫微生物组的变化.
主要成果:
- 抑制土壤减少了植物对Oulema melanopus养的应激反应.
- 抑制性土壤中的植物显示了植物激素和佐胺水平的降低,增强的酸盐表明了防御化.
- 抑制性土壤中的树叶球微生物群具有更多有益的细菌,并且更耐受昆虫诱导的不稳定.
- 对昆虫的接触导致了O. melanopus.中的微生物组失调.
结论:
- 自然的土壤抑制力可以保护植物免受昆虫害虫的伤害,而不仅仅是疾病.
- 这种保护是由植物有益的细菌和植物在耐压性土壤微生物组网络中的原始化介导的.
- 这涉及到一个复杂的土壤-植物-昆虫反机制.
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