Genome-wide characterization of the CPA gene family in potato and a preliminary functional analysis of its role in NaCl tolerance
文献类型： 外文期刊
作者： Liu, Jintao 1 ; Li, Dianjue 1 ; Wang, Jing 1 ; Wang, Qian 1 ; Guo, Xiao 3 ; Fu, Qi 1 ; Kear, Philip 4 ; Zhu, Guangtao 1 ; Yang, Xiaohui 3 ;
作者机构： 1.Yunnan Normal Univ, Key Lab Potato Biol Univ Yunnan, Sch Life Sci, Kunming 650500, Peoples R China
2.Southwest United Grad Sch, Kunming 650500, Peoples R China
3.Shandong Acad Agr Sci, Inst Vegetables, Mol Biol Key Lab Shandong Facil Vegetable, Natl Vegetable Improvement Ctr,Shandong Sub Ctr, Jinan 250100, Peoples R China
4.CIP China Ctr Asia Pacific, Int Potato Ctr CIP, Beijing 100081, Peoples R China
关键词： Potato; CPA; NaCl stress; Gene expression; Ion transporter
期刊名称：BMC GENOMICS （ 影响因子：4.4； 五年影响因子：4.7 ）
ISSN： 1471-2164
年卷期： 2024 年 25 卷 1 期
页码：
收录情况： SCI
摘要： Background The cation/proton antiporter (CPA) superfamily plays a crucial role in regulating ion homeostasis and pH in plant cells, contributing to stress resistance. However, in potato (Solanum tuberosum L.), systematic identification and analysis of CPA genes are lacking. Results A total of 33 StCPA members were identified and classified into StNHX (n = 7), StKEA (n = 6), and StCHX (n = 20) subfamilies. StCHX owned the highest number of conserved motifs, followed by StKEA and StNHX. The StNHX and StKEA subfamilies owned more exons than StCHX. NaCl stress induced the differentially expression of 19 genes in roots or leaves, among which StCHX14 and StCHX16 were specifically induced in leaves, while StCHX2 and StCHX19 were specifically expressed in the roots. A total of 11 strongly responded genes were further verified by qPCR. Six CPA family members, StNHX1, StNHX2, StNHX3, StNHX5, StNHX6 and StCHX19, were proved to transport Na+ through yeast complementation experiments. Conclusions This study provides comprehensive insights into StCPAs and their response to NaCl stress, facilitating further functional characterization.
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