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Analysis of metabolome and microbiome revealed the resistance mechanisms in sugarcane cultivars with high resistance to pokkah boeng disease

文献类型： 外文期刊

作者： Xiao, Jian 1 ; Chen, Zhongliang 2 ; Liang, Tian 2 ; Yang, Shangdong 1 ; Tan, Hongwei 2 ;

作者机构： 1.Guangxi Univ, Agr Coll, Natl Demonstrat Ctr Expt Plant Sci Educ, Guangxi Key Lab Agroenvironm & Agroprod Safety, Nanning 530004, Guangxi, Peoples R China

2.Guangxi Acad Agr Sci, Key Lab Sugarcane Biotechnol & Genet Improvement G, Guangxi Key Lab Sugarcane Genet Improvement, Sugarcane Res Inst,Minist Agr & Rural Affairs, Nanning 530007, Peoples R China

3.Hunan Univ, Coll Biol, Longping Branch, Changsha 410125, Hunan, Peoples R China

关键词： Sugarcane pokkah boeng disease (PBD); Endophytic; Microbial compositions; Metabolome

期刊名称：CHEMICAL AND BIOLOGICAL TECHNOLOGIES IN AGRICULTURE （ 影响因子：6.6； 五年影响因子：6.6 ）

ISSN：

年卷期： 2024 年 11 卷 1 期

页码：

收录情况： SCI

摘要： Background Endophytes are reported to play a role in resistance against plant pathogens. Understanding the metabolite-mediated endophytic microbiota composition in plants provides insights to improve plant stress resistance. In this study, via metabolome and microbiome analyses, we aimed to elucidate the resistance mechanism of sugarcane cultivars with high resistance to sugarcane pokkah boeng disease (PBD). The endophytic microbial composition and metabolites in the stems of various sugarcane cultivars with high resistance (HR) or high susceptibility (HS) to PBD were analyzed.Results The results revealed that the endophytic fungi with biocontrol effects such as Shinella, Dechloromonas, and Microbacter were significantly enriched, and the abundance of pathogenic fungi such as Fusarium, Ramichloridium, Scleroramularia, Phaeosphaeriopsis, Sarocladium, Zygophiala, Gibberella, Pseudocercospora, Cyphellophora, Monocillium, Apiotrichum, Microsphaeropsis, and Scleroramularia significantly reduced in the stems of HR cultivars. Additionally, six metabolites [citric acid, isocitrate, malic acid, PC(16:0/0:0), phosphocholine, and lysoPC(16:0)] were significantly related to the endophytes in the stems of HR cultivars.Conclusions These results suggested that more abundance of antagonistic microbes and highly active metabolic functions of endophytes in the HR cultivars were the important mechanisms underlying their higher resistance to PBD.

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