The plasmodesmata-associated b-1,3-glucanase gene GhPdBG regulates fiber development in cotton

文献类型： 外文期刊

第一作者： Fan, Yijie

作者： Fan, Yijie;Lin, Shuangshuang;Lyu, Yanhui;Tang, Zhengmin;Jiao, Chengzhi;Chen, Aiyun;Xing, Piyi;Zhang, Li;Sun, Yuxiao;Guo, Haixia;Li, Tongtong;Zeng, Fanchang;Shang, Haihong;Yuan, Youlu;Shang, Haihong;Yuan, Youlu;Ren, Zhonghai

作者机构：

关键词： Fiber/trichome; b-1; 3-glucanase; Functional analysis; Evolutional variation

期刊名称：CROP JOURNAL （ 影响因子：6.6； 五年影响因子：6.5 ）

ISSN： 2095-5421

年卷期： 2023 年 11 卷 6 期

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收录情况： SCI

摘要： Trichomes are specialized structures that originate from epidermal cells of organs in higher plants. The cotton fiber is a unique single-celled trichome that elongates from the seed coat epidermis. Cotton (Gossypium hirsutum) fibers , trichomes are models for cell differentiation. In an attempt to elucidate the intercellular factors that regulate fiber and trichome cell development, we identified a plasmodesmal b-1,3-glucanase gene (designated GhPdBG) controlling the opening and closing of plasmodesmata in cot-ton fibers. Structural and evolutionary analysis showed haplotypic variation in the promoter region of the GhPdBG gene among 352 cotton accessions, but high conservation in the coding region. GhPdBG was expressed predominantly in cotton fibers and localized to plasmodesmata (PD). Expression patterns of PdBG that corresponded to PD permeability were apparent during fiber development in G. hirsutum and G. barbadense. The PdBG-mediated opening-closure of PD appears to be involved in fiber development and may account for the contrasting fiber traits of these two species. Ectopic expression of GhPdBG revealed that it functions in regulating fiber and trichome length and/or density by modulating plasmod-esmatal permeability. This finding suggests that plasmodesmal targeting of GhPdBG, as a switch of inter-cellular channels, regulates single-celled fiber and trichome development in cotton.(c) 2023 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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