Yan Yan, Xiao-Ming Li, Yun Chen, Tian-Tian Wu, Ci-Hang Ding, Mei-Qi Zhang, Yue-Ting Guo, Chu-Yang Wang, Junli Zhang, Xuebin Zhang, Awais Rasheed, Shengchun Xu, Meng-Lu Wang, Zhongfu Ni, Qixin Sun, Jin-Ying Gou
Wheat (Triticum aestivum) is one of the most essential human energy and protein sources. However, wheat production is threatened by devastating fungal diseases, such as stripe rust, caused by Puccinia striiformis Westend. f. sp. tritici (Pst). Here, we reveal that the alternations in chloroplast lipid profiles and the accumulation of jasmonate (JA) in the necrosis region activate JA signaling and trigger the host defense. The collapse of chloroplasts in the necrosis region results in accumulations of polyunsaturated membrane lipids and the lipid-derived phytohormone, JA, in transgenic lines of Yr36 that encodes Wheat Kinase START 1 (WKS1), a high-temperature-dependent adult-plant resistance protein...
September 2, 2023: Journal of Genetics and Genomics