Resistance to ACCase-inhibiting herbicides in an Asia minor bluegrass (Polypogon fugax) population in China
文献类型： 外文期刊
作者： Tang, Wei 1 ; Zhou, Fengyan 2 ; Chen, Jie 1 ; Zhou, Xiaogang 3 ;
作者机构： 1.Zhejiang Chem Ind Res Inst, Natl Pesticide R&D South Ctr, Zhejiang Branch, Hangzhou 310023, Zhejiang, Peoples R China
2.Anhui Acad Agr Sci, Inst Plant Protect & Agro Prod Safety, Hefei 230031, Peoples R China
3.Sichuan Acad Agr Sci, Inst Plant Protect, Chengdu 610066, Peoples R China
关键词： Polypogon fugax;ACCase gene;Clodinafop-propargyl;Haloxyfop-R-methyl;Herbicide resistance
期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：3.963； 五年影响因子：4.454 ）
ISSN： 0048-3575
年卷期： 2014 年 108 卷
页码：
收录情况： SCI
摘要： Asia minor bluegrass (Polypogon fugax) is a common annual grass weed of winter crops distributed across China. We conducted a study on the resistance level and the mechanism of resistance to ACCase-inhibiting herbicides in a P. fugax population from China. Whole-plant dose-response experiments in greenhouse showed that the resistant P. fugax population was 1991, 364, 269, 157, and 8-fold resistant to clodinafop-propargyl, fluazifop-p-butyl, haloxyfop-R-methyl, quizalofop-p-ethyl and fenoxaprop-p-ethyl relative to the reference susceptible population, which was susceptible to all the five AOPP herbicides. Much lower R/S values of 3.5, 2.4 and 3.5, respectively, were detected for clethodim, sethoxydim and pinoxaden. Molecular analysis of resistance confirmed that the Ile(2041) to Asn mutation in the resistant population conferred resistance to AOPP herbicides, but not to CHD and DEN herbicides. This is the first report of a target site mutation that corresponded to resistance to AOPP herbicides in P. fugax. Proper resistance management practices are necessary to prevent ACCase-inhibiting herbicides from becoming ineffective over wide areas. (C) 2013 Elsevier Inc. All rights reserved.
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