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Identification of HbHSP90 gene family and characterization HbHSP90.1 as a candidate gene for stress response in rubber tree

文献类型： 外文期刊

作者： Liu, Mingyang 1 ; Wang, Lifeng 2 ; Ke, Yuhang 1 ; Xian, Xuemei 1 ; Wang, Jiali 1 ; Wang, Meng 1 ; Zhang, Yu 1 ;

作者机构： 1.Hainan Univ, Hainan Univ Haikou, Collaborat Innovat Ctr Nat Rubber, Sch Plant Protect,Key Lab Green Prevent & Control, Haikou 570228, Peoples R China

2.Minist Agr, Minist Agr & Rural Affairs, Key Lab Biol & Genet Resources Rubber Tree, Haikou, Peoples R China

3.Chinese Acad Trop Agr Sci, Rubber Res Inst, Haikou 571101, Hainan, Peoples R China

关键词： Hevea brasiliensis Mull. Arg.; HSP90; Stress; Protein interactions; Subcellular localization

期刊名称：GENE （ 影响因子：3.913； 五年影响因子：3.48 ）

ISSN： 0378-1119

年卷期： 2022 年 827 卷

页码：

收录情况： SCI

摘要： Heat shock protein 90 (HSP90), an essential molecular chaperone, is triggered in response to stress situations in plants. However, the roles of HSP90 gene family members in rubber tree have not been totally specified. In this study, 7 HbHSP90 genes were identified from rubber tree genome. Classification of HbHSP90 family genes into three groups, namely A, B, and C was based on phylogenetic analysis. The structural and motif analyses showed similar structural features in the same group of HbHSP90 members, but differences between groups. Analysis of cis-regulatory element sequences of HbHSP90 genes indicates that the HbHSP90 gene promoter is rich in drought, temperature, and hormone elements. qRT-PCR analysis showed that the 7 HbHSP90 genes responded in different degrees to temperature, drought and powdery mildew infection, and in particularly, HbHSP90.1 was differentially expressed under both abiotic and biotic stresses. Meanwhile, HbHSP90.1 gene was significantly expressed under the treatment of different phytohormone and H2O2 (Hydrogen Peroxide) treatments, which means that HbHSP90.1 gene performs an essential part in the growth and development of rubber trees. Furthermore, the protein interaction results showed that HbHSP90.1 interacted with HbSGT1b. Subcellular localization showed that both HbHSP90.1 and HbSGT1b located in the nucleus. Taken together, we speculate that HbHSP90.1 interacts with HbSGT1b in the nucleus to respond to rubber tree stress processes. The results of this study provide a solid foundation for further studies on the mechanism of HbHSP90 family genes in the stress resistance response of rubber tree.

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