التفاصيل البيبلوغرافية
| العنوان: |
The plasmodesmata-associated β-1,3-glucanase gene GhPdBGregulates fiber development in cotton |
| المؤلفون: |
Fan, Yijie, Lin, Shuangshuang, Lyu, Yanhui, Shang, Haihong, Yuan, Youlu, Tang, Zhengmin, Jiao, Chengzhi, Chen, Aiyun, Xing, Piyi, Zhang, Li, Sun, Yuxiao, Guo, Haixia, Li, Tongtong, Ren, Zhonghai, Zeng, Fanchang |
| المصدر: |
The Crop Journal; 20230101, Issue: Preprints |
| مستخلص: |
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 and trichomes are models for cell differentiation. In an attempt to elucidate the intercellular factors that regulate fiber and trichome cell development, we identifieda plasmodesmal β-1,3-glucanase gene (designated GhPdBG) controlling the opening and closing of plasmodesmata in cotton fibers. Structural and evolutionary analysis showed haplotypic variation in the promoter region of the GhPdBGgene 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 PdBGthat corresponded to PD permeability were apparent during fiber development in G. hirsutumand 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 GhPdBGrevealed that it functions in regulating fiber and trichome length and/or density by modulating plasmodesmatal permeability. This finding suggests that plasmodesmal targeting of GhPdBG, as a switch of intercellular channels, regulates single-celled fiber and trichome development in cotton. |
| قاعدة البيانات: |
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