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Transcriptomic analysis of Amaranthus retroflex resistant to PPO-inhibitory herbicides

文献类型： 外文期刊

作者： Guo, Yulian 1 ; Wang, Yu 1 ; Zang, Xiangyun 1 ; Luo, Chan 1 ; Huang, Chunyan 1 ; Cong, Keqiang 1 ; Guo, Xiaotong 1 ;

作者机构： 1.Heilongjiang Acad Agr Sci, Inst Plant Protect, Harbin, Heilongjiang, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.7； 五年影响因子：3.8 ）

ISSN： 1932-6203

年卷期： 2023 年 18 卷 8 期

页码：

收录情况： SCI

摘要： Amaranthus retroflexus L. is one of the malignant weeds which can cause a reduction in the soybean yield. We found a population of A. retroflexus (R-Q) resistant to fomesafen through the initial screening of whole-plant dose response bioassay in the research. The resistance index of the population (R-Q) was 183 times of the sensitive population (S-N). The resistant and sensitive populations were used as experimental materials in the paper. Strand-specific RNA-Seq analyses of RQ and SN populations obtained from herbicide-treated and mock-treated leaf samples after treatment were conducted to generate a full-length transcriptome database. We analyzed differentially expressed genes (DEGs) among the R-Q and SN A. retroflexus populations treated with recommended dose and mock-treated on the 1(st) (24 h) and 3(rd) (72 h) days to identify genes involved in fomesafen resistance. All 82,287 unigenes were annotated by Blastx search with E-value < 0.00001 from 7 databases. A total of 94,815 DEGs among the three group comparisons were identified. Two nuclear genes encoding PPO (PPX1 and PPX2) and five unigenes belonging to the AP2-EREBP, GRAS, NAC, bHLH and bZIP families exhibited different expression patterns between individuals of SN and R-Q populations. The A. retroflexus transcriptome and specific transcription factor families which can respond to fomesafen in resistant and susceptible genotypes were reported in this paper. The PPX1 and PPX2 genes of the target enzyme were identified. The study establishes the foundation for future research and provides opportunities to manage resistant weeds better.

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