A systematic analysis of the phloem protein 2 (PP2) proteins in Gossypium hirsutum reveals that GhPP2-33 regulates salt tolerance
文献类型: 外文期刊
作者: Fei Wei;Pengyun Chen;Hongliang Jian;Xiaohao Guo;Xiaoyan Lv;Boying Lian;Mengxi Sun;Li An;Xinyu Dang;Miaoqian Yang;Hongmei Wu;Nan Zhang;Aimin Wu;Hantao Wang;Liang Ma;Xiaokang Fu;Jianhua Lu;Shuxun Yu;Hengling Wei
作者机构:
关键词: Gossypium hirsutum;Phloem protein 2;Salt stress
期刊名称: BMC Genomics
ISSN: 1471-2164
年卷期: 2023 年 24 卷 1 期
页码:
收录情况: SCIE(2023版)
摘要: Background: Phloem protein 2 (PP2) proteins play a vital role in the Phloem-based defense (PBD) and participate in many abiotic and biotic stress. However, research on PP2 proteins in cotton is still lacking. Results: A total of 25, 23, 43, and 47 PP2 genes were comprehensively identified and characterized in G.arboretum, G.raimondii, G.barbadense, and G.hirsutum. The whole genome duplication (WGD) and allopolyploidization events play essential roles in the expansion of PP2 genes. The promoter regions of GhPP2 genes contain many cis-acting elements related to abiotic stress and the weighted gene co-expression network analysis (WGCNA) analysis displayed that GhPP2s could be related to salt stress. The qRT-PCR assays further confirmed that GhPP2-33 could be dramatically upregulated during the salt treatment. And the virus-induced gene silencing (VIGS) experiment proved that the silencing of GhPP2-33 could decrease salt tolerance. Conclusions: The results in this study not only offer new perspectives for understanding the evolution of PP2 genes in cotton but also further explore their function under salt stress.
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