Cyt02 encodes cytochrome P450 monooxygenase,increasing rice(Oryza sativa L.)resistance to sheath blight  

作　　者：Tengda Zheng Xiaolin Wang Yuewen He Deqiang Li Andrews Danso Ofori Xing Xiang Abdul Ghani Kandhro Xiaoqun Yi Fu Huang Jianqing Zhu Ping Li Aiping Zheng 

机构地区：[1]State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China,Sichuan Agricultural University,Chengdu 611130,Sichuan,China [2]College of Agronomy,Sichuan Agricultural University,Chengdu 611130,Sichuan,China [3]Guang’an Vocational&Technical College,Guang’an 638500,Sichuan,China [4]Rice Research Institute,Sichuan Agricultural University,Chengdu 611130,Sichuan,China

出　　处：《The Crop Journal》2025年第1期92-103,共12页作物学报(英文版)

基　　金：supported by the Sichuan Province International Science and Technology Innovation Cooperation(2024YFHZ0299);the Project of Science and Technology Department of Sichuan Province(2022YFH0031);Chengdu Science and Technology Bureau(2024-YF05-02168-SN).

摘　　要：Rice sheath blight(RSB)is a major destructive disease impeding rice production.Identifying key germplasm resources with increased resistance remains a challenge.However,the mechanisms underlying disease resistance are not yet fully understood.Cytochrome P450 monooxygenases(CYP450s)serve biosynthesis and metabolic detoxification functions in plants,but there is limited information about their role in the response induced by RSB.This study demonstrated that CYT02 belongs to the CYP73A100 subfamily and is a typical member of the CYP450s.Overexpression(OE)in rice of the cytochrome P450 monooxygenase cyt02 conferred increased resistance to RSB and increased vegetative tillering.Cyt02 may increase RSB resistance by regulating plant hormone synthesis,regulate reactive oxygen species(ROS)by coordinating the activity of antioxidant enzymes,and initiate phytoalexin synthesis in response to fungal infection.These research findings have laid a foundation for a deeper understanding of the function of cyt02 and offered a potential target gene for breeding rice varieties resistant to sheath blight.

关 键 词：RICE Sheath blight Cytochrome P450 monooxygenase Metabolomics analysis Functional analysis 

分 类 号：S511[农业科学—作物学]