Orchid B-sister gene PeMADS28 displays conserved function in ovule integument development

文献类型： 外文期刊

第一作者： Shen, Ching-Yu

作者： Shen, Ching-Yu;Lu, Hsiang-Chia;Tsai, Wen-Chieh;Chen, You-Yi;Chang, Song-Bin;Tsai, Wen-Chieh;Liu, Ke-Wei;Huang, Lai-Qiang;Liu, Ke-Wei;Huang, Lai-Qiang;Liu, Ke-Wei;Huang, Lai-Qiang;Lu, Hsiang-Chia;Zou, Shuang-quan;Liu, Zhong-Jian;Lu, Hsiang-Chia;Zou, Shuang-quan;Hsiao, Yu-Yun;Tsai, Wen-Chieh;Yang, Fengxi;Zhu, Genfa

作者机构：

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2021 年 11 卷 1 期

页码：

收录情况： SCI

摘要： The ovules and egg cells are well developed to be fertilized at anthesis in many flowering plants. However, ovule development is triggered by pollination in most orchids. In this study, we characterized the function of a B-sister gene, named PeMADS28, isolated from Phalaenopsis equestris, the genome-sequenced orchid. Spatial and temporal expression analysis showed PeMADS28 predominantly expressed in ovules between 32 and 48 days after pollination, which synchronizes with integument development. Subcellular localization and protein-protein interaction analyses revealed that PeMADS28 could form a homodimer as well as heterodimers with D-class and E-class MADS-box proteins. In addition, ectopic expression of PeMADS28 in Arabidopsis thaliana induced small curled rosette leaves, short silique length and few seeds, similar to that with overexpression of other species' B-sister genes in Arabidopsis. Furthermore, complementation test revealed that PeMADS28 could rescue the phenotype of the ABS/TT16 mutant. Together, these results indicate the conserved function of B(sister)PeMADS28 associated with ovule integument development in orchid.

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