数字农科院2.0

GhVAP1, a vesicle-associated membrane protein-associated protein, regulates cotton fiber development

文献类型： 外文期刊

作者： Shouhong Zhu;Youzhong Li;Wei Chen;Jinbo Yao;Yan Li;Shengtao Fang;Jingwen Pan;Isah Mansur Aminu;Zeeshan Ahmad;Youjun Lv;Yongshan Zhang

作者机构：

关键词： AlaRP;Cotton fiber;Genome editing;Syntaxin;VAP

期刊名称： Industrial Crops and Products

ISSN： 0926-6690

年卷期： 2025 年 233 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Vesicle-associated membrane protein (VAMP)-associated proteins (VAPs) serve as crucial molecular bridges, connecting the endoplasmic reticulum (ER) and plasma membrane (PM), VAPs play important roles in cell elongation, material transport and metabolism, and maintain the normal structure and morphology of cells. However, the mechanism of VAP regulates cotton fiber development is not understood. In this study, a candidate protein, GhVAP1, was screened via a previous yeast two-hybrid assay for interaction with GhAlaRP, an alanine-rich protein that regulates cotton fiber cell development, further inferred that GhVAP1 have an important function in cotton fiber development. The expression pattern of GhVAP1 exhibited that it is predominantly expressed in the elongating fibers. GhVAP1 is localized on the ER. Further knockout of the GhVAP1 through genome editing technology inhibited fiber elongation and reduced fiber strength. Moreover, transcriptome data analysis of cotton fibers from vap1 plants identified 904 differentially expressed genes (DEGs), mainly involved in SNARE interactions in the vesicle transport pathway, etc. Furthermore, protein interaction analysis revealed that GhVAP1 also interacts with GhSyntaxins, which are vesicle transport-associated proteins that are predominantly expressed in fibers. These findings revealed that the possible pathway by which GhVAP1 interacts with GhAlaRP and GhSyntaxins to form a regulatory network involved in cotton fiber development. Collectively, our findings elucidate that GhVAP1 is pivotal in the regulation of fiber cell elongation development.

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