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Understanding the ternary interaction of crop plants, fungal pathogens, and rhizobacteria in response to global warming

文献类型： 外文期刊

作者： Feng, Fayun 1 ; Du, Fei 1 ; Li, Qiuling 1 ; Zhang, Leigang 2 ; Yu, Xiangyang 2 ; Liu, Changhong 1 ;

作者机构： 1.Nanjing Univ, Sch Life Sci, State Key Lab Pharmaceut Biotechnol, Nanjing 210014, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr, State Key Lab Breeding Base, Key Lab Food Qual & Safety Jiangsu Prov, Nanjing 210014, Peoples R China

关键词： Global warming; Crop Plants; Plant-microbe interactions; Root exudates; Fungal-bacterial antagonism

期刊名称：MICROBIOLOGICAL RESEARCH （ 影响因子：6.9； 五年影响因子：7.2 ）

ISSN： 0944-5013

年卷期： 2025 年 296 卷

页码：

收录情况： SCI

摘要： Climate change is altering the equilibrium of the Earth's biosphere, imposing unpredictable survival dynamics on terrestrial organisms. This includes the intricate interactions between fungal pathogens and crop plants, which are pivotal for global food security. Rising temperatures are expected to exacerbate the prevalence of croppathogenic fungi worldwide, yet research on how crops respond to this imminent threat remains limited. Here, we identified predominant potential pathogens and antagonistic bacteria in vegetable fields in Shandong Province, China, revealing the near-ubiquitous presence of Fusarium oxysporum and Bacillus species in sampled soils of cucumber, tomato, chili, and ginger. Through simulated warming experiments within a temperature range of 20-40 degrees C and an experimental period of 3 days, we investigated the ternary interaction among vegetables and isolated F. oxysporum strain 05, and Bacillus sp. strain 31. Elevated temperatures enhanced F. oxysporum biomass and virulence, yet also stimulated vegetables to allocate more nutrients via root exudates. This enriched rhizospheric antagonistic Bacillus populations, it also boosted the expression of antifungal lipopeptide biosynthetic genes (bamb and ItuA) and auxin production in Bacillus sp. strain 31. This enrichment promoted plant growth and maintained a relatively stable level of pathogenic fungi. Our study unveiled a nuanced and complex interplay among crop plants, fungal pathogens, and rhizobacteria, that could inform future agricultural practices, and advance our understanding of crop survival strategies to bolster crop resilience and safeguard global food security under ongoing climate change.

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