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Comparative Transcriptome Analysis Reveals the Molecular Basis of Brassica napus in Response to Aphid Stress

文献类型： 外文期刊

作者： Li, Yuanhong 1 ; Cai, Lei 1 ; Ding, Ting 1 ; Tian, Entang 1 ; Yan, Xiaohong 3 ; Wang, Xiaodong 4 ; Zhang, Jiefu 4 ; Yu, Kunjiang 1 ; Chen, Zhuo 2 ;

作者机构： 1.Guizhou Univ, Coll Agr, Guiyang 550025, Peoples R China

2.Guizhou Univ, Ctr Res & Dev Fine Chem, Guiyang 550025, Peoples R China

3.Chinese Acad Agr Sci, Minist Agr & Rural Affairs, Oil Crops Res Inst, Key Lab Biol & Genet Improvement Oil Crops, Wuhan 430062, Peoples R China

4.Jiangsu Acad Agr Sci, Minist Agr & Rural Affairs, Inst Ind Crops, Key Lab Cotton & Rapeseed, Nanjing 210014, Peoples R China

5.Guangxi Tianyuan Biochem Co Ltd, Nanning 530009, Peoples R China

关键词： Brassica napus; resistance to aphid stress; transcriptome characteristics; physiological characteristics; candidate gene

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 15 期

页码：

收录情况： SCI

摘要： Rapeseed is a globally important economic crop that can be severely impacted by aphids. However, our understanding of rapeseed resistance to aphid stress is very limited. In this study, we analyzed the resistance characteristics of the low aphid-susceptible variety APL01 and the highly aphid-susceptible variety Holly in response to aphid stress. APL01 had a more significant inhibitory effect on aphid proliferation compared with Holly during the early stage of inoculation, whereas Holly showed stronger tolerance to aphid stress compared with APL01 during the later stage of inoculation. Through transcriptome, physiological, and gene expression analyses, it was revealed that chitinase activity, catalase activity, calcium signal transduction, and activation of systemic acquired resistance might be involved in aphid resistance in B. napus. The degree of inhibition of photosynthesis in plants under aphid stress directly determines the tolerance of B. napus to aphid stress. Furthermore, four promising candidate genes were screened from eight genes related to rapeseed response to biotic stress through RT-qPCR analysis of gene expression levels. These research findings represent an important step forward in understanding the resistance of rapeseed to aphid stress and provide a solid foundation for the cloning of genes responsible for this resistance.

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