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Multiple herbicide resistance in Eleusine indica from sugarcane fields in China

文献类型： 外文期刊

作者： Li, Jingbo 1 ; Zhang, Zhiqian 1 ; Lei, Qi 1 ; Lu, Bugao 1 ; Jin, Chenzhong 1 ; Liu, Xiu 1 ; Wang, Yanhui 2 ; Bai, Lianyang 3 ;

作者机构： 1.Hunan Univ Humanities Sci & Technol, Hunan Prov Collaborat Innovat Ctr Field Weed Cont, Key Lab Green Control Crop Pests Hunan Higher Edu, Loudi, Peoples R China

2.Guangxi Acad Agr Sci, Plant Protect Res Inst, Guangxi Key Lab Biol Crop Dis & Insect Pests, Nanning, Peoples R China

3.Hunan Acad Agr Sci, Hunan Prov Key Lab Biol & Control Weed, Changsha, Peoples R China

关键词： Eleusine indica; Multiple herbicide resistance; EPSPS gene; Glyphosate; PSI inhibitor; PSII inhibitor

期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：4.966； 五年影响因子：4.591 ）

ISSN： 0048-3575

年卷期： 2022 年 182 卷

页码：

收录情况： SCI

摘要： Long-term reliance on herbicide weed control has led to resistance evolution in Eleusine indica in sugarcane fields of Guangxi Zhuang autonomous region. Ninety-six E. indica lines were collected from this region, and their response was tested to six herbicides: glyphosate; glufosinate; PSII-inhibitors diuron and atrazine; and PSI inhibitors paraquat and diquat. Target-site resistance mechanisms were examined in specific lines with multiple resistance to three herbicide modes of action. Of 96 E. indica lines, 51, 26, and 24 lines had resistance to diuron, atrazine, and diquat, respectively, while 14 and 9 had resistance to paraquat and glyphosate. Among 25 lines tested with multiple resistance, 7 lines exhibited resistance to three herbicide modes of action. In two multiple resistant lines (GXER2, GXER5), amplification/over-expression/mutations of the EPSPS gene contributed to the very high-level (up to 109-fold) glyphosate resistance. No target-site mutations/over-expression were identified in the psbA gene in these two lines, so non-target-site resistance mechanisms were likely responsible for the low-level (3-fold) resistance to the PSII herbicides diuron and atrazine. A high-level (23-fold) of paraquat resistance was observed in GXER5, and a low-level (5-fold) paraquat resistance was found in GXER2. Multiple herbicide resistance in E. indica has evolved in sugarcane fields of Guangxi Zhuang autonomous region with diverse resistance mechanisms. Therefore, diversified weed control tactics should be adopted to prevent this weed.

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