Combined transcriptome and metabolome analysis identifies triterpenoid-induced defense responses in Myzus persicae Sülzer-infested peach

文献类型： 外文期刊

第一作者： Pan, Lei

作者： Pan, Lei;Huang, Rui;Lu, Zhenhua;Duan, Wenyi;Sun, Shihang;Yan, Lele;Cui, Guochao;Niu, Liang;Wang, Zhiqiang;Zeng, Wenfang;Pan, Lei;Huang, Rui;Lu, Zhenhua;Duan, Wenyi;Sun, Shihang;Yan, Lele;Cui, Guochao;Niu, Liang;Wang, Zhiqiang;Zeng, Wenfang

作者机构：

关键词： CYP450; insect herbivore; metabolite profile; Myzus persicae; peach; RNA-seq; triterpenoids

期刊名称：JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：5.7； 五年影响因子：6.8 ）

ISSN： 0022-0957

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Piercing/sucking insects such as green peach aphid (GPA) (Myzus persicae) cause direct damage by obtaining phloem nutrients and indirect damage by spreading plant viruses. To investigate the response of peach trees (Prunus persica) to aphids, the leaf transcriptome and metabolome of two genotypes with different sensitivities to GPA were studied. The gene expression of aphid-susceptible plants infested with aphids was similar to that of control plants, whereas the gene expression of aphid-resistant plants infested with aphids showed strong induced changes in gene expression compared with control plants. Furthermore, gene transcripts in defense-related pathways, including plant-pathogen interaction, MAPK signaling, and several metabolic pathways, were strongly enriched upon aphid infestation. Untargeted secondary metabolite profiling confirmed that aphid infestation induced larger changes in aphid-resistant than in aphid-susceptible peaches. Consistent with transcriptomic alterations, nine triterpenoids showed highly significant GPA-induced accumulation in aphid-resistant peaches, whereas triterpenoid abundance remained predominantly unchanged or undetected in aphid-susceptible peaches. Furthermore, some types of transcription factors (including WRKYs, ERFs, and NACs) were strongly induced upon GPA infestation in aphid-resistant, but not in aphid-susceptible peaches. These results suggested that the accumulation of specialized triterpenoids and the corresponding pathway transcripts may play a key role in peach GPA resistance. Transcriptome analysis and metabolic profiling suggest a key role of a group of triterpenoids in the defense response of peach under Myzus persicae infestation.

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