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Whole transcriptome analysis resulted in the identification of Chinese sprangletop (Leptochloa chinensis) genes involved in cyhalofop-butyl tolerance

文献类型： 外文期刊

作者： Chen, Ke 1 ; Peng, Yajun 2 ; Zhang, Liang 1 ; Wang, Long 4 ; Mao, Donghai 5 ; Zhao, Zhenghong 1 ; Bai, Lianyang 1 ; Wang, 1 ;

作者机构： 1.Hunan Univ, Longping Branch, Grad Sch, Changsha, Peoples R China

2.Hunan Acad Agr Sci, Plant Protect Inst, Changsha, Peoples R China

3.Hunan Acad Agr Sci, Agr Biotechnol Res Inst, Changsha, Peoples R China

4.Hunan Univ, Coll Biol, State Key Lab Chemo Biosensing & Chemometr, Hunan Prov Key Lab Plant Funct Genom & Dev Regula, Changsha 410082, Peoples R China

5.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China

关键词： Acetyl-CoA carboxylase; Chinese sprangletop; Cyhalofop-butyl; Cytochrome P450; ATP-binding cassette transporter; RNA-Seq; Non-target site resistance; Metabolic resistance

期刊名称：BMC GENOMICS （ 影响因子：3.969； 五年影响因子：4.478 ）

ISSN： 1471-2164

年卷期： 2021 年 22 卷 1 期

页码：

收录情况： SCI

摘要： Background Chinese sprangletop [Leptochloa chinensis (L.) Nees] is an annual malignant weed, which can often be found in paddy fields. Cyhalofop-butyl is a specialized herbicide which is utilized to control L. chinensis. However, in many areas, L. chinensis has become tolerant to this key herbicide due to its continuous long-term use. Results In this study, we utilized a tolerant (LC18002) and a sensitive (LC17041) L. chinensis populations previously identified in our laboratory, which were divided into four different groups. We then employed whole transcriptome analysis to identify candidate genes which may be involved in cyhalofop-butyl tolerance. This analysis resulted in the identification of six possible candidate genes, including three cytochrome P450 genes and three ATP-binding cassette transporter genes. We then carried out a phylogenetic analysis to identify homologs of the differentially expressed cytochrome P450 genes. This phylogenetic analysis indicated that all genes have close homologs in other species, some of which have been implicated in non-target site resistance (NTSR). Conclusions This study is the first to use whole transcriptome analysis to identify herbicide non-target resistance genes in L. chinensis. The differentially expressed genes represent promising targets for better understanding herbicide tolerance in L. chinensis. The six genes belonging to classes already associated in herbicide tolerance may play important roles in the metabolic resistance of L. chinensis to cyhalofop-butyl, although the exact mechanisms require further study.

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