Decanal: A Direct Defense Volatile Induced by Colletotrichum fructicola in the Tea Cultivar "Qiancha No. 1"
文献类型： 外文期刊
作者： Cheng, Yongjia 1 ; Chen, Yao 2 ; Liu, Jianjun 1 ; Li, Dongyang 3 ; Zhang, Juan 1 ; Li, Chaojie 1 ; Yang, Wen 2 ; Lei, Zhiwei 2 ;
作者机构： 1.Guizhou Univ, Coll Tea Sci, Guiyang 550025, Peoples R China
2.Guizhou Acad Agr Sci, Guizhou Tea Res Inst, Guiyang 550006, Peoples R China
3.Guiyang Univ, Sch Biol & Environm Engn, Guiyang 550005, Peoples R China
关键词：
tea volatiles;
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.2； 五年影响因子：6.4 ）
ISSN： 0021-8561
年卷期： 2025 年 73 卷 18 期
页码：
收录情况： SCI
摘要： Plants release a variety of defensive volatiles in response to biotic stress. The present study examined interactions between Colletotrichum fructicola and the defense volatiles induced by this fungal species in the tea cultivar "Qiancha No. 1". Analysis of the volatiles emitted from C. fructicola-infected leaves of "Qiancha No. 1" revealed that four volatiles showed a relative content increase of more than 2%. Fungicidal activity assays demonstrated that decanal exhibited the strongest antifungal activity among the four volatiles. Further physiological experiments demonstrated that the antifungal mechanism of decanal was associated with disruption of the cell wall and the membrane. Transcriptome analysis revealed that the genes encoding Chitinase 1, chitin synthase 1, and endochitinase42 were identified as potential targets that may be involved in cell wall degradation by decanal. Additionally, genes encoding cytochrome P450-DIT2 and multidrug resistance protein fer6 were identified as potential targets that may be associated with membrane damage. This study is the first to demonstrate that decanal acts as a direct defense volatile in the interaction between C. fructicola and "Qiancha No. 1," highlighting its potential as an effective antifungal agent.
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