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Characterisation of the HbSnRK2 gene family members and revealing specific HbSnRK2.2 functions in the stress resistance of the rubber tree

文献类型： 外文期刊

作者： Zhang, Yu 1 ; Liu, Mingyang 1 ; Zhang, Dong 1 ; Wang, Meng 1 ; Wang, Lifeng 4 ;

作者机构： 1.Hainan Univ, Sanya Nanfan Res Inst, Key Lab Green Prevent & Control Trop Plant Dis & P, Haikou, Peoples R China

2.Hainan Univ, Minist Educ PRC, Haikou, Peoples R China

3.Hainan Univ, Sch Plant Protect, Haikou, Peoples R China

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

5.Minist Agr & Rural Affairs, State Key Lab Incubat Base Cultivat & Physiol Trop, Danzhou Invest & Expt Stn Trop Crops, Haikou, Peoples R China

6.Chinese Acad Trop Agr Sci, Rubber Res Inst, Haikou, Peoples R China

关键词： SnRK2; Hevea brasiliensis Mull; Arg; phytohormone; signal pathway

期刊名称：PLANT PROTECTION SCIENCE （ 影响因子：1.3； 五年影响因子：1.5 ）

ISSN： 1212-2580

年卷期： 2023 年

页码：

收录情况： SCI

摘要： SNF1-related protein kinase (SnRK2) is a critical positive regulatory factor in the abscisic acid (ABA) signalling pathway. However, the roles of the HbSnRK2 gene family members in the rubber tree, especially in response to stress, have not been thoroughly characterised. Here, we cloned six HbSnRK2 genes from the rubber tree. Based on the phylogenetic analysis, the HbSnRK2 family genes were divided into three groups. The motifs and intron numbers of HbSnRK2 were conserved. Analysis of cis-regulatory element sequences of all HbSnRK2 genes identified ABRE and TC-rich elements in the prompter of all the HbSnRK2 genes, illustrating that HbSnRK2 could be adjusted by the ABA and stress responsiveness. The qRT-PCR analysis showed that the expression patterns of the six HbSnRK2 genes differed in different tissues. The expression of these genes also differed under treatment with the plant hormone ABA, the HbSnRK2.2 gene was especially significantly expressed under the ABA treatment. Moreover, the HbSnRK2.2 gene responded to glyphosate, powdery mildew, heat stress and cold stress processes, which indicates that the HbSnRK2.2 gene plays an important role in phytohormone signalling and stress response in rubber trees. Taken together, the study provides valuable information to further define the role of the HbSnRK2 gene in rubber trees.

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