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Exserohilum turcicum Alters Phyllosphere Microbiome Diversity and Functions-Implications for Plant Health Management

文献类型： 外文期刊

作者： Chao, Shengqian 1 ; Chen, Yifan 1 ; Wu, Jiandong 4 ; Zhang, Yin 1 ; Song, Lili 1 ; Li, Peng 1 ; Sun, Yu 1 ; Hu, Yingxiong 5 ; Wang, Hui 5 ; Jiang, Yuping 6 ; Lv, Beibei 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Biotechnol Res Inst, Key Lab Agr Genet & Breeding, Shanghai 201106, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Safety Assessment Environm Agr Genet Modif, Beijing 100125, Peoples R China

3.Shanghai Profess Technol Serv Platform Agr Biosafe, Shanghai 201106, Peoples R China

4.Anhui Agr Univ, Sch Life Sci, Natl Engn Lab Crop Stress Resistance Breeding, Hefei 230036, Peoples R China

5.CIMMYT China Specialty Maize Res Ctr, Shanghai 201403, Peoples R China

6.Shanghai Inst Technol, Coll Ecol Technol & Engn, Shanghai 201418, Peoples R China

关键词： Exserohilum turcicum; maize; metagenomic sequencing; microbiome; phyllosphere

期刊名称：MICROORGANISMS （ 影响因子：4.2； 五年影响因子：4.6 ）

ISSN：

年卷期： 2025 年 13 卷 3 期

页码：

收录情况： SCI

摘要： The phyllosphere represents the largest biological surface on Earth and serves as an untapped reservoir of functional microbiota. The phyllosphere microbiome has the potential to mitigate plant diseases; however, limited information exists regarding its role in maintaining plant health. In this study, metagenomic sequencing was employed to analyze the microbiomes of the adaxial and abaxial leaf surfaces of healthy (CKWT) and diseased (EWT) maize, with the aim of dissecting the influence of Exserohilum turcicum on phyllosphere microbiome function. E. turcicum altered the alpha and beta diversity of the phyllosphere microbiome, with the Shannon diversity and Chao1 index values significantly reduced in EWT. More beneficial microbes accumulated in the CKWT phyllosphere, whereas pathogenic microbes decreased. E. turcicum may have altered the balance between commensal and pathogenic microorganisms. The species and abundances of microorganisms on the two sets of leaf surfaces were also altered after inoculation with E. turcicum. Further analysis of disease-resistance-related metabolic pathways and abundances of antibiotic-resistance genes revealed that E. turcicum altered the abundance of the functional microbiome and modified the microbiome differences between adaxial and abaxial leaf surfaces. In conclusion, the results reveal that microbial diversity in the maize phyllosphere can influence the microbiome and regulate microbial functions to support plant health. These findings enhance our understanding of how E. turcicum affects the phyllosphere microbiome and provide a theoretical basis for biological control of E. turcicum.

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