The composition of root exudates between resistant and susceptible konjac species against soft rot disease

文献类型： 外文期刊

第一作者： Wu, Jinping

作者： Wu, Jinping;Zhou, Jie;Qi, Chuangdong;Guo, Fengling;Yang, Chaozhu;Zhao, Qinghua;Kuang, Yidi

作者机构：

关键词： Amorphophallus konjac; Disease resistance; Defense mechanisms; Root exudates; Soft rot disease

期刊名称：JOURNAL OF PLANT DISEASES AND PROTECTION （ 影响因子：2.2； 五年影响因子：2.2 ）

ISSN： 1861-3829

年卷期： 2025 年 132 卷 2 期

页码：

收录情况： SCI

摘要： An increasing number of studies have shown that root exudates play an important role in plant disease resistance. The high incidence of soft rot diseases is a major constraint of konjac production. The aim of this study was to investigate the activity and composition of the root exudates from resistant cultivars (Amorphophallus bulbifer, HB) and susceptible cultivars (Amorphophallus konjac K.Koch, HK) via high-performance liquid chromatography-tandem mass spectrometry (UHPLC-q Exactive HF-X). We identified 26 significant differentially accumulated metabolites. Further analysis of the differential metabolites showed that there were 7 unique metabolites in HB and 4 unique metabolites in HK. The fold change was 0.614 and 0.561 in HK/HB for 3-fucosyllactose and buddleoflavonoloside, respectively. Analysis of metabolic pathways using the Kyoto Encyclopedia of Genes and Genomes database revealed that the concentration of jasmonic acid was significantly higher in HB than in HK. Jasmonic acid metabolism was involved in the regulation of konjac soft rot disease resistance. Our results indicate that the root exudates could be used as a pre-infection prevention strategy as well as help control disease outbreaks.

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