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Bioinformatic and Phenotypic Analysis of AtPCP-Ba Crucial for Silique Development in Arabidopsis

文献类型： 外文期刊

作者： Chen, Guangxia 1 ; Wu, Xiaobin 2 ; Zhu, Ziguo 1 ; Li, Tinggang 1 ; Tang, Guiying 3 ; Liu, Li 1 ; Wu, Yusen 1 ; Ma, Yujiao 1 ; Han, Yan 1 ; Liu, Kai 1 ; Han, Zhen 1 ; Li, Xiujie 1 ; Yang, Guowei 1 ; Li, Bo 1 ;

作者机构： 1.Shandong Acad Grape, Jinan 250100, Peoples R China

2.Shandong Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Agroenvironm Huang Huai Hai Plain, Minist Agr & Rural Affairs,State Key Lab Nutrient, Jinan 250100, Peoples R China

3.Shandong Acad Agr Sci, Inst Crop Germplasm Resources, Jinan 250100, Peoples R China

4.Shandong Acad Agr Sci, State Key Lab Nutrient Use & Management, Jinan 250100, Peoples R China

关键词： silique width; CRPs; signal pathway; TPD1; bioinformatic analysis

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 18 期

页码：

收录情况： SCI

摘要： Silique development exerts significant impacts on crop yield. CRPs (Cysteine-rich peptides) can mediate cell-cell communication during plant reproduction and development. However, the functional characterization and regulatory mechanisms of CRPs in silique development remain unclear. In this study, we identified many CRP genes downstream of the CRP gene TPD1 (TAPETUM DETERMINANT1) during silique development using a microarray assay. The novel Arabidopsis thaliana pollen-borne CRPs, the PCP-Bs (for pollen coat protein B-class) gene AtPCP-Ba, along with TPD1, are essential for silique development. The AtPCP-Ba was significantly down-regulated in tpd1 flower buds but up-regulated in OE-TPD1 flower buds and siliques. The silencing of AtPCP-Ba compromised the wider silique of OE-TPD1 plants and inhibited the morphology of OE-TPD1 siliques to the size observed in the wild type. A total of 258 CRPs were identified with the bioinformatic analysis in Arabidopsis, Brassica napus, Glycine max, Oryza sativa, Sorghum bicolor, and Zea mays. Based on the evolutionary tree classification, all CRP members can be categorized into five subgroups. Notably, 107 CRP genes were predicted to exhibit abundant expression in flowers and fruits. Most cysteine-rich peptides exhibited high expression levels in Arabidopsis and Brassica napus. These findings suggested the involvement of the CRP AtPCP-Ba in the TPD1 signaling pathway, thereby regulating silique development in Arabidopsis.

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