在全球土壤中,细菌植物病原体的主导地位和自然抑制
Min Gao1, Manuel Delgado-Baquerizo2, Chao Xiong1
1Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia.
Nature communications
|March 5, 2026
概括
土壤病原体威胁全球粮食生产,但有些土壤可以抑制它们. 这项研究确定了关键的病原体和影响其流行的微生物多样性和气候等因素,有助于气候变化下的疾病管理.
科学领域:
- 环境微生物学环境微生物学
- 植物病理学 植物病理学
- 气候变化科学 气候变化科学
背景情况:
- 土壤是植物病原体的港湾,影响全球粮食和生态系统生产力.
- 土壤的特性和微生物群落可以抑制病原体的生长.
- 了解病原体分布对于农业的可持续性至关重要.
研究的目的:
- 为了确定主要的土壤传播的植物病原体及其全球分布.
- 确定与病原体流行和抑制相关的环境和微生物因素.
- 在未来的气候情景下预测病原体流行率的变化.
主要方法:
- 来自59个国家的1602个土壤元基因组的整合.
- 温室实验用于验证病原体的识别.
- 统计分析和预测建模以评估气候变化影响.
主要成果:
- 确定了32种主要的植物病原体,包括Ralstonia solanacearum.
- 在温暖的农业土壤中发现的病原体热点.
- 较高的微生物多样性,土壤有机碳和较冷的气候与较低的病原体患病率相关.
- 非致病性Streptomyces spp.,状菌根真菌,以及与病原体抑制相关的特定基因集群.
- 预测模型表明,在气候变化下,热带/亚热带地区的病原体患病率增加.
结论:
- 确定了病原体流行和抑制的全球驱动因素.
- 土壤微生物多样性和环境因素在疾病调控中起着关键作用.
- 预计气候变化将加剧植物病原体问题,特别是在温暖的地区.
- 这些发现为改进植物疾病监测和管理战略提供了基础.
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