A myelocytomatosis transcription factor from Hevea brasiliensis positively regulates the expression of the small rubber particle protein gene
文献类型： 外文期刊
第一作者： Guo, Dong
作者： Guo, Dong;Li, Hui-Liang;Wang, Ying;Zhu, Jia-Hong;Peng, Shi-Qing
作者机构：
关键词： Hevea brasiliensis; Small rubber particle protein; Myelocytomatosis transcription factor; Positive regulator; Natural rubber biosynthesis
期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）
ISSN： 0926-6690
年卷期： 2019 年 133 卷
页码：
收录情况： SCI
摘要： Small rubber particle protein (SRPP) is a major rubber particle-associated protein in latex from rubber tree (Hevea brasiliensis Muell. Arg.), and it implicated in the natural rubber biosynthesis. However, the regulatory mechanism of H. brasiliensis SRPP gene (HbSRPP) is incompletely understood. In this study, a myelocytomatosis (MYC) transcription factor (designated as HbMYC2b) regulating the HbSRPP expression was identified. HbMYC2b possesses a 2037 bp open reading frame that encodes 681 amino acids. The HbMYC2b protein has a basic helix-loop-helix (bHLH)-leucine zipper domain, and a bHLH-MYC-N domain. The highest expression of HbMYC2b is observed in the bark followed by the latex, flowers, and leaves. HbMYC2b significantly increases the activity of the HbSRPP promoter, suggesting that HbMYC2b activates this promoter. HbMYC2b may be a positive regulator of HbSRPP in rubber tree.
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