Comparative Metabolomic Profiling of Compatible and Incompatible Interactions Between Potato and Phytophthora infestans

Frontiers in Microbiology

Jingyu Zhu¹  Yajie Wang¹  Xiang Tao¹  Yining Sun¹  Xue Tang¹  Bin Yong¹  Huanhuan Shao¹  Yan Li¹  Honghao Li²  Yusong Jiang³ 

[1] College of Life Sciences, Sichuan Normal University, Chengdu, China;Key Laboratory of Integrated Pest Management on Crops in Southwest, Institute of Plant Protection, Ministry of Agriculture, Sichuan Academy of Agricultural Sciences, Chengdu, China;Research Institute for Special Plants, Chongqing University of Arts and Sciences, Chongqing, China;

关键词: metabolomics;    Phytophthora infestans;    potato cultivars;    compatible;    incompatible;   

DOI  :  10.3389/fmicb.2022.857160

来源: DOAJ

【 摘 要 】

Late blight is one of the main biological stresses limiting the potato yield; however, the biochemical mechanisms underlying the infection process of Phytophthora infestans remain unrevealed. In this study, the late blight-resistant potato cultivar Ziyun No.1 (R) and the susceptible cultivar Favorita (S) were inoculated with P. infestans. Untargeted metabolomics was used to study the changes of metabolites in the compatible and incompatible interactions of the two cultivars and the pathogen at 0, 48, and 96 h postinoculation (hpi). A total of 819 metabolites were identified, and the metabolic differences mainly emerged after 48 hpi. There were 198 and 115 differentially expressed metabolites (DEMs) in the compatible and incompatible interactions. These included 147 and 100 upregulated metabolites during the compatible and incompatible interactions, respectively. Among them, 73 metabolites were identified as the P. infestans-responsive DEMs. Furthermore, the comparisons between the two cultivars identified 57 resistance-related metabolites. Resistant potato cultivar had higher levels of salicylic acid and several upstream phenylpropanoid biosynthesis metabolites, triterpenoids, and hydroxycinnamic acids and their derivatives, such as sakuranetin, ferulic acid, ganoderic acid Mi, lucidenic acid D2, and caffeoylmalic acid. These metabolites play crucial roles in cell wall thickening and have antibacterial and antifungal activities. This study reports the time-course metabolomic responses of potatoes to P. infestans. The findings reveal the responses involved in the compatible and incompatible interactions of potatoes and P. infestans.

【 授权许可】

Unknown