Chinese Journal of Applied Entomology ›› 2020, Vol. 57 ›› Issue (4): 823-832.doi: 10.7679/j.issn.2095-1353.2020.084

• Special Column • Previous Articles    

Clone and expression analysis of three glutathione-S-transferase genes in different host-specific types of Aphis gossypii Glover

Chuan-Peng WANG1,2(), Shuai ZHANG2, Xue-Ke GAO2, Jun-Yu LUO2, Xiang-Zhen ZHU2, Li WANG2, Kai-Xin ZHANG2, Yi-Hua YANG1,***(), Jin-Jie CUI2,***()   

  1. 1. College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
    2. State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
  • Received:2019-07-03 Accepted:2019-11-20 Online:2020-07-27 Published:2020-09-02
  • Contact: Yi-Hua YANG,Jin-Jie CUI E-mail:wangcpzs@163.com;yhyang@njau.edu.cn;aycuijinjie@163.com

Abstract:

[Objectives] To determine the profiles of three high expression glutathione-S-transferase (GST) genes in various developmental stages of Aphis. gossypii Glover, and compare the expression of these genes in different host-races of this pest. [Methods] Full-length cDNA sequences of GSTs genes were cloned based on transcriptome data of A. gossypii specimens collected from seedling and mid-summer growth stages of cotton. The relative expression levels in different developmental stages (nymph and adult) and host-races (cucumber and cotton host-races) were investigated with real-time quantitative PCR. [Results] Three high expression GSTs were identified and named AgoGST-s1 (GenBank accession no.: MN688789), AgoGST-d1 (GenBank accession no.: MN688790) and AgoGST-d2 (GenBank accession no.: MN688791). These 3 genes were expressed in all development stages and their temporal expression profiles all tended to increase over time. The relative expression of AgoGST-s1 gene was less in all developmental stages, whereas that of AgoGST-d1 and AgoGST-d2 was more variable. Expression of these 3 GSTs in the cucumber host-race was higher than in the cotton host-race for most age-classes. [Conclusion] Expression of the AgoGST-s1, AgoGST-d1 and AgoGST-d2 genes is significantly associated with the developmental stage of A. gossypii. The expression patterns of these 3 GST genes in two host-races differed, which may reflect adaptation to different host plants.

Key words: Aphis gossypii, glutathione-S-transferase (GST), host specialization, development stage, expression profile