Three STIGMA AND STYLE STYLISTs Pattern the Fine Architectures of Apical Gynoecium and Are Critical for Male Gametophyte-Pistil Interaction
Three STIGMA AND STYLE STYLISTs Pattern the Fine Architectures of Apical Gynoecium and Are Critical for Male Gametophyte-Pistil Interaction
复制标题
三位柱头和风格设计师塑造了顶端雌蕊的精细结构，对于雄性配子体-雌蕊相互作用至关重要
DOI：
10.1016/j.cub.2020.09.006
复制
发表时间：
2020-09
期刊：
影响因子：
9.2
通讯作者：
Sun Meng-xiang
中科院分区：
文献类型：
--
作者：
Li Wenwei;Huang Xiaorong;Zou Jie;Wu Jianjun;Jiao Hengwu;Peng Xiongbo;Sun Meng-xiang
雌蕊群起源于心皮的融合，被认为是从简单的设置进化而来，随后是细胞类型和组织分布的适应性调整，以促进有效的有性生殖[1，2]。顶端雌蕊群作为一个调整序列，分化为柱头和花柱。顶端雌蕊群的结构模式和功能特化对于植物育性都是至关重要的[3，4]。然而，顶端雌蕊群的精细结构是如何在与花粉和花粉管相互作用的界面上建立起来的还有待于阐明。在这里，我们报告了一个新的被子植物特异性基因家族，柱头和花柱风格表1-3（SSS 1，SSS 2和SSS 3）。SSS 1主要表达于花柱的传导道组织，SSS 2主要表达于柱头，SSS 3主要表达于传导道周围的花柱周边区域。SSSs通过控制细胞扩张或伸长来共同调节顶端雌蕊群的模式。顶端雌蕊群的结构和功能都受到SSS表达的影响，表明它们在建立与花粉管通讯的雌性界面中起着重要作用。NGATHA 3（NGA 3）转录因子[5，6]可直接与SSS启动子结合并控制SSS表达。SSSs的过表达可以挽救nga 1 nga 3双突变体的花柱缺陷，表明它们处于相同的调控途径中。我们的研究结果揭示了一种新的分子机制，负责图案顶端雌蕊群的精细架构，并建立一个适当的接口，花粉管生长，因此是至关重要的植物有性生殖。
The gynoecium is derived from the fusion of carpels and is considered to have evolved from a simple setup followed by adaptive adjustment in cell type and tissue distribution to facilitate efficient sexual reproduction [1, 2]. As a sequence of the adjustment, the apical gynoecium differentiates into a stigma and a style. Both the structural patterning and functional specification of the apical gynoecium are critical for plant fertility [3, 4]. However, how the fine structures of the apical gynoecium are established at the interface interacting with pollen and pollen tubes remain to be elucidated. Here, we report a novel angiosperm-specific gene family,STIGMA AND STYLE STYLIST 1–3(SSS1,SSS2, andSSS3). TheSSS1expresses predominately in the transmitting tract tissue of style,SSS2expresses intensively in stigma, andSSS3expresses mainly in stylar peripheral region round the transmitting tract. SSSs coregulate the patterning of the apical gynoecium via controlling cell expansion or elongation. Both the architecture and function of apical gynoecium can be affected by the alteration ofSSSexpression, indicating their critical roles in the establishment of a proper female interface for communication with pollen tubes. The NGATHA3 (NGA3) transcription factor [5, 6] can directly bind toSSSspromoter and controlSSSsexpression. Overexpression ofSSSscould rescue the stylar defect ofnga1nga3double mutant, indicating their context in the same regulatory pathway. Our findings reveal a novel molecular mechanism responsible for patterning the fine architecture of apical gynoecium and establishing a proper interface for pollen tube growth, which is therefore crucial for plant sexual reproduction.
登录
查看更多内容
影响因子：
4.6
作者：
Allen Sessions;Jennlfer L. Nemhauser;Andy McColl;Andy McColl;Judith L. Roe;Kenneth A. Feldmann
通讯作者：
Allen Sessions;Jennlfer L. Nemhauser;Andy McColl;Andy McColl;Judith L. Roe;Kenneth A. Feldmann
控制十字花科花柱形态的分子框架。
DOI：
10.1242/dev.158105
发表时间：
2018-03-01
期刊：
Development (Cambridge, England)
影响因子：
--
作者：
Simonini S;Stephenson P;Østergaard L
通讯作者：
Østergaard L
影响因子：
4.6
作者：
M. Heisler;A. Atkinson;Yasmin H. Bylstra;Rebecca L. Walsh;D. Smyth
通讯作者：
M. Heisler;A. Atkinson;Yasmin H. Bylstra;Rebecca L. Walsh;D. Smyth
影响因子：
10.7
作者：
Kai C. Pfannebecker;Matthias Lange;O. Rupp;A. Becker
通讯作者：
Kai C. Pfannebecker;Matthias Lange;O. Rupp;A. Becker
影响因子：
9.4
作者：
Huang, Xiaorong;Peng, Xiongbo;Sun, Meng-Xiang
通讯作者：
Sun, Meng-Xiang