Differential Resistance to Acetyl-CoA Carboxylase Inhibitors in Rice: Insights from Two Distinct Target-Site Mutations
文献类型： 外文期刊
作者： Zhou, Zhenzhen 1 ; Jiang, Qun 1 ; Qiu, Zeyu 1 ; Hou, Xiaodong 1 ; Yang, Xia 1 ; Yang, Yuwen 1 ; Hao, Tingting 1 ; Guo, Dongshu 1 ; Wang, Jinyan 1 ; Li, Yongfeng 1 ; Liu, Qing 1 ; Ling, Xitie 1 ; Zhang, Baolong 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Prov Key Lab Agrobiol, Nanjing 210014, Jiangsu, Peoples R China
2.Zhongshan Biol Breeding Lab, Nanjing 210014, Jiangsu, Peoples R China
3.Hainan Univ, Sanya Nanfan Res Inst, Hainan Yazhou Bay Seed Lab, Sanya 572025, Hainan, Peoples R China
4.Yangzhou Univ, Coll Agr, Yangzhou 225009, Jiangsu, Peoples R China
关键词： EMS mutagenesis; acetyl-CoA carboxylase; ACCase-inhibitingherbicide; herbicide resistance; rice
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： 2024 年 72 卷 21 期
页码：
收录情况： SCI
摘要： Weeds present a significant challenge to agricultural productivity, and acetyl-CoA carboxylase (ACCase)-inhibiting herbicides have proven to be effective in managing weed populations in rice fields. To develop ACCase-inhibiting herbicide-resistant rice, we generated mutants of rice ACCase (OsACC) featuring Ile-1792-Leu or Gly-2107-Ser substitutions through ethyl methyl sulfonate (EMS) mutagenesis. The Ile-1792-Leu mutant displayed cross-resistance to aryloxyphenoxypropionate (APP) and phenylpyrazoline (DEN) herbicides, whereas the Gly-2107-Ser mutants primarily exhibited cross-resistance to APP herbicides with diminished resistance to the DEN herbicide. In vitro assays of the OsACC activity revealed an increase in resistance to haloxyfop and quizalofop, ranging from 4.84- to 29-fold in the mutants compared to that in wild-type. Structural modeling revealed that both mutations likely reduce the binding affinity between OsACC and ACCase inhibitors, thereby imparting resistance. This study offers insights into two target-site mutations, contributing to the breeding of herbicide-resistant rice and presenting alternative weed management strategies in rice cultivation.
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