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Identification and Characterization of the HbPP2C Gene Family and Its Expression in Response to Biotic and Abiotic Stresses in Rubber Tree

文献类型： 外文期刊

作者： Liu, Qifeng 1 ; Qin, Bi 2 ; Zhang, Dong 1 ; Liang, Xiaoyu 1 ; Yang, Ye 1 ; Wang, Lifeng 2 ; Wang, Meng 1 ; Zhang, Yu 1 ; Hwang, Sun-goo 1 ;

作者机构： 1.Hainan Univ, Sanya Inst Breeding & Multiplicat, Sch Trop Agr & Forestry, Haikou 570228, Peoples R China

2.Chinese Acad Trop Agr Sci, Minist Agr & Rural Affairs, Key Lab Biol & Genet Resources Rubber Tree, State Key Lab Incubat Base Cultivat & Physiol Trop, Haikou 571101, Peoples R China

3.Minist Agr & Rural Affairs, Danzhou Invest & Expt Stn Trop Crops, Danzhou 571737, Peoples R China

关键词： HbPP2C; rubber tree; bioinformatics; expression analysis

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）

ISSN： 1661-6596

年卷期： 2023 年 24 卷 22 期

页码：

收录情况： SCI

摘要： Plant PP2C genes are crucial for various biological processes. To elucidate the potential functions of these genes in rubber tree (Hevea brasiliensis), we conducted a comprehensive analysis of these genes using bioinformatics methods. The 60 members of the PP2C family in rubber tree were identified and categorized into 13 subfamilies. The PP2C proteins were conserved across different plant species. The results revealed that the HbPP2C genes contained multiple elements responsive to phytohormones and stresses in their promoters, suggesting their involvement in these pathways. Expression analysis indicated that 40 HbPP2C genes exhibited the highest expression levels in branches and the lowest expression in latex. Additionally, the expression of A subfamily members significantly increased in response to abscisic acid, drought, and glyphosate treatments, whereas the expression of A, B, D, and F1 subfamily members notably increased under temperature stress conditions. Furthermore, the expression of A and F1 subfamily members was significantly upregulated upon powdery mildew infection, with the expression of the HbPP2C6 gene displaying a remarkable 33-fold increase. These findings suggest that different HbPP2C subgroups may have distinct roles in the regulation of phytohormones and the response to abiotic and biotic stresses in rubber tree. This study provides a valuable reference for further investigations into the functions of the HbPP2C gene family in rubber tree.

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