Genome-wide identification of HbVQ proteins and their interaction with HbWRKY14 to regulate the expression of HbSRPP in Hevea brasiliensis

文献类型： 外文期刊

第一作者： Zhu, Jiahong

作者： Zhu, Jiahong;Qu, Long;Wang, Ying;Li, Huiliang;Peng, Shiqing;Guo, Dong;Qu, Long;Zeng, Liwang;Zhu, Jiahong;Li, Huiliang;Guo, Dong

作者机构：

关键词： Hevea brasiliensis; VQ protein; WRKY transcription factor; Small rubber particle protein

期刊名称：BMC GENOMICS （ 影响因子：3.7； 五年影响因子：4.2 ）

ISSN： 1471-2164

年卷期： 2025 年 26 卷 1 期

页码：

收录情况： SCI

摘要： Background Valine-glutamine motif-containing proteins (VQ proteins) play important roles in plant growth, development and response to stress. However, information on the VQ gene family in rubber tree (Hevea brasiliensis Muell. Arg.) is limited. Results In this study, a total of 21 VQ protein genes (named HbVQ1 similar to HbVQ21) were identified in rubber trees and divided into six subfamilies. Gene structure analysis revealed that most of HbVQs had no introns except for HbVQ5 and HbVQ20. Gene expression analysis revealed that HbVQ4, 5, and 21 were expressed at relatively high levels in latex. In addition, HbVQ4, 5, and 21 interact with the WRKY transcription factor HbWRKY14. Transient co-expression of HbVQ4 or HbVQ5 and HbWRKY14 resulted in relieved HbWRKY14-mediated transcription inhibition of the gene encoding small rubber particle protein (HbSRPP), whereas transient co-expression of HbVQ21 and HbWRKY14 resulted in increased HbWRKY14-mediated HbSRPP transcription inhibition. Conclusions In summary, HbVQ4, 5, and 21 interact with HbWRKY14 to regulate the expression of HbSRPP. This study provides insight into the functions of VQ proteins in regulating natural rubber biosynthesis.

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