Genome-wide identification, characterization, and expression analysis related to autotoxicity of the GST gene family in Cucumis melo L.

甜瓜 生物 黄瓜 基因 基因家族 基因组 转录组 遗传学 亚科 生物逆境 植物 基因表达 非生物胁迫 园艺
作者
Jingrong Wang,Zhengda Zhang,Jinghua Wu,Xiaoyun Han,Gefu Wang‐Pruski,Zhizhong Zhang
出处
期刊:Plant Physiology and Biochemistry [Elsevier BV]
卷期号:155: 59-69 被引量:21
标识
DOI:10.1016/j.plaphy.2020.06.046
摘要

Glutathione S-transferase (GST) plays an important role in plant resistance to biotic and abiotic stresses. In this paper, the characteristics of melon GST gene family members were analyzed from a genome-wide perspective. Forty-nine GSTs were identified in melon genome, belonging to eight classes. Through the phylogenetic analysis of GST proteins in melon and other plants, it was found that members from the same subfamily in different species clustered together, indicating that the subfamilies of GST have diversified before the divergence within these species. The results of chromosome mapping showed that GSTs were present in all chromosomes except for chromosome 5. Gene replication events played an important role in the expansion and evolution of melon GST gene family. Ten GSTs with significant differential expression were screened in the transcriptome database related to melon autotoxicity stress. The differential expression of these 10 GSTs was detected in roots and leaves of melon seedlings treated with cinnamic acid. The relative expression level of CmGSTU7, CmGSTU10, CmGSTU18, CmGSTF2 and CmGSTL1 in roots of melon seedlings was significantly higher than that in control group. It suggested that the five GSTs might play an important role in cinnamic acid mediated autotoxicity stress in melon. The results of this paper were helpful to reveal the evolution and functional succession of GST family and further understand the response of GST to autotoxicity stress in melon.
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