Horizontal gene transfer of Fhb7 from fungus underlies Fusarium head blight resistance in wheat
文献类型： 外文期刊
作者： Wang, Hongwei 1 ; Sun, Silong 1 ; Ge, Wenyang 1 ; Zhao, Lanfei 1 ; Hou, Bingqian 1 ; Wang, Kai 2 ; Lyu, Zhongfan 1 ; Chen 1 ;
作者机构： 1.Shandong Agr Univ, Coll Agron, State Key Lab Crop Biol, Tai An 271018, Shandong, Peoples R China
2.Novogene Bioinformat Inst, Beijing 100083, Peoples R China
3.Shandong Acad Agr Sci, Crop Res Inst, Jinan 250100, Shandong, Peoples R China
4.Yantai Univ, Coll Chem & Chem Engn, Yantai 264005, Shandong, Peoples R China
5.ARS, USDA, Cereal Crops Res Unit, Edward T Schafer Agr Res Ctr, Fargo, ND 58102 USA
6.ARS, USDA, Hard Winter Wheat Genet Res Unit, Manhattan, KS 66506 USA
7.Univ Haifa, Inst Evolut, IL-3498838 Haifa, Israel
8.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing 100101, Peoples R China
9.Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA
期刊名称：SCIENCE （ 影响因子：47.728； 五年影响因子：51.433 ）
ISSN： 0036-8075
年卷期： 2020 年 368 卷 6493 期
页码：
收录情况： SCI
摘要： Fusarium head blight (FHB), a fungal disease caused by Fusarium species that produce food toxins, currently devastates wheat production worldwide, yet few resistance resources have been discovered in wheat germplasm. Here, we cloned the FHB resistance gene Fhb7 by assembling the genome of Thinopyrum elongatum, a species used in wheat distant hybridization breeding. Fhb7 encodes a glutathione S-transferase (GST) and confers broad resistance to Fusarium species by detoxifying trichothecenes through de-epoxidation. Fhb7 GST homologs are absent in plants, and our evidence supports that Th. elongatum has gained Fhb7 through horizontal gene transfer (HGT) from an endophytic Epichloe species. Fhb7 introgressions in wheat confers resistance to both FHB and crown rot in diverse wheat backgrounds without yield penalty, providing a solution for Fusarium resistance breeding.
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