您好,欢迎访问江苏省农业科学院 机构知识库!

Ile-1781-Leu Target Mutation and Non-Target-Site Mechanism Confer Resistance to Acetyl-CoA Carboxylase-Inhibiting Herbicides in Digitaria ciliaris var. chrysoblephara

文献类型: 外文期刊

作者: Yang, Qian 1 ; Zhu, Jinlei 1 ; Yang, Xia 2 ; Wei, Tian 1 ; Lv, Min 1 ; Li, Yongfeng 2 ;

作者机构: 1.Jiangsu Lixiahe Dist Inst Agr Sci, Yangzhou 225007, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Crop Germplasm & Biotechnol, Nanjing 210014, Jiangsu, Peoples R China

关键词: Digitaria ciliaris var; chrysoblephara; metamifop; cyhalofop-butyl; ACCase gene mutation; multiple gene copies; non-target-site resistance; weed control

期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:6.1; 五年影响因子:6.3 )

ISSN: 0021-8561

年卷期: 2023 年 71 卷 21 期

页码:

收录情况: SCI

摘要: Digitaria ciliaris var. chrysoblephara is a xerophytic weed severely invadingrice fields along with the application of rice mechanical direct seedingtechnology in China. This study identified one resistant population(M5) with an Ile-1781-Leu substitution in ACCase1 showing broad-spectrum resistance to three chemical classes of ACCase-inhibitingherbicides, including metamifop, cyhalofop-butyl, fenoxaprop-p-ethyl, haloxyfop-p-methyl, clethodim,sethoxydim, and pinoxaden. The other two populations, M2 and M4, withoutany resistance-responsible mutations, only exhibited resistance toaryloxyphenoxypropionate (APP) herbicides cyhalofop-butyl and fenoxaprop-p-ethyl. Pre-treatment with the cytochrome P450 monooxygenase(P450) inhibitor PBO significantly reduced the cyhalofop-butyl resistanceby 43% in the M2 population. Pre-emergence weed control with soil-appliedherbicides, such as pretilachlor, pendimethalin, and oxadiazon, caneffectively inhibit the germination and growth of D.ciliaris var. chrysoblephara. The present study reported a xerophytic weed species invading ricefields featuring broad-spectrum resistance to ACCase-inhibiting herbicidesas a result of Ile-1781-Leu mutation of ACCase. Bothtarget- and P450-involved non-target-site mechanisms may be contributingto resistance in D. ciliaris var. chrysoblephara species.

  • 相关文献
作者其他论文 更多>>