Disease resistance conferred by components of essential chrysanthemum oil and the epigenetic regulation of OsTPS1  

作　　者：Chuansong Zhan Long Lei Hao Guo Shen Zhou Congping Xu Zixin Liu Zichen Wu Yuan Deng Yuanyuan Miao Yu Han Meng Zhang Hua Li Sishu Huang Chenkun Yang Feng Zhang Yufei Li Ling Liu Xianqing Liu Hafiz Muhammad Khalid Abbas Alisdair R.Fernie Meng Yuan Jie Luo 

机构地区：[1]College of Tropical Crops,Hainan University,Haikou 570228,China [2]Sanya Nanfan Research Institute of Hainan University,Hainan Yazhou Bay Seed Laboratory,Sanya 572025,China [3]National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research(Wuhan),Huazhong Agricultural University,Wuhan 430070,China [4]Max Planck Institute of Molecular Plant Physiology,Am Mühlenberg 1,14476 Potsdam-Golm,Germany

出　　处：《Science China(Life Sciences)》2023年第5期1108-1118,共11页中国科学（生命科学英文版）

基　　金：supported by the Hainan Major Science and Technology Project(ZDKJ202002);the National Natural Science Foundation of China(32100318);China Postdoctoral Science Foundation(2021TQ0093);Hainan Yazhou Bay Seed Laboratory(B21Y10904);the Hainan Academician Innovation Platform(HD-YSZX-202003,HD-YSZX202004);the Hainan University Startup Fund(KYQD(ZR)1866);Hainan Provincial Natural Science Foundation of China(322RC573),and Hainan Provincial Natural Science Foundation of China(321QN184)。

摘　　要：The sesquiterpene alpha-bisabolol is the predominant active ingredient in essential oils that are highly valued in the cosmetics industry due to its wound healing,anti-inflammatory,and skin-soothing properties.Alpha-bisabolol was thought to be restricted to Compositae plants.Here we reveal that alpha-bisabolol is also synthesized in rice,a non-Compositae plant,where it acts as a novel sesquiterpene phytoalexin.Overexpressing the gene responsible for the biosynthesis of alpha-bisabolol,Os TPS1,conferred bacterial blight resistance in rice.Phylogenomic analyses revealed that alpha-bisabolol-synthesizing enzymes in rice and Compositae evolved independently.Further experiments demonstrated that the natural variation in the disease resistance level was associated with differential transcription of Os TPS1 due to polymorphisms in its promoter.We demonstrated that Os TPS1 was regulated at the epigenetic level by JMJ705 through the methyl jasmonate pathway.These data reveal the cross-family accumulation and regulatory mechanisms of alpha-bisabolol production.

关 键 词：alpha-bisabolol epigenetic regulation natural variation 

分 类 号：Q943[生物学—植物学]