Stomatal regulators are co-opted for seta development in the astomatous liverwort Marchantia polymorpha
Stomatal regulators are co-opted for seta development in the astomatous liverwort Marchantia polymorpha
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DOI：
10.1038/s41477-022-01325-5
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发表时间：
2023-01
期刊：
影响因子：
18
通讯作者：
K. Moriya;Makoto Shirakawa;Jeanne Loue-Manifel;Yoriko Matsuda;Yen-Ting Lu;K. Tamura;Yoshito Oka
中科院分区：
文献类型：
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作者：
K. Moriya;Makoto Shirakawa;Jeanne Loue-Manifel;Yoriko Matsuda;Yen-Ting Lu;K. Tamura;Yoshito Oka
特殊类型细胞的进化需要获得由转录因子（TF）控制的新基因调控网络。在气孔植物中，TF模块形成的亚科Ia和IIIb基本螺旋-环-螺旋TF（Ia-IIIb bHLH）调节气孔的形成，然而，这个模块如何在陆地植物多样化过程中演变仍不清楚。在这里，我们表明，在astomatous liverwortMarchantia polymorpha，一个Ia-IIIb bHLH模块调节一个独特的孢子体组织，刚毛，这是在苔藓和地钱中发现的发展。唯一的Ia bHLH基因MpSETA和IIIb bHLH基因MpICE 2调节刚毛谱系细胞的细胞分裂和/或分化。MpSETA可以部分取代拟南芥Ia bHLH TF的气孔功能，表明刚毛和气孔形成的共同调控机制。我们的研究结果揭示了一个Ia-IIIb bHLH TF模块在陆地植物进化过程中调节细胞命运决定和/或不同类型细胞的细胞分裂的共同选择。
The evolution of special types of cells requires the acquisition of new gene regulatory networks controlled by transcription factors (TFs). In stomatous plants, a TF module formed by subfamilies Ia and IIIb basic helix–loop–helix TFs (Ia-IIIb bHLH) regulates stomatal formation; however, how this module evolved during land plant diversification remains unclear. Here we show that, in the astomatous liverwortMarchantia polymorpha, a Ia-IIIb bHLH module regulates the development of a unique sporophyte tissue, the seta, which is found in mosses and liverworts. The sole Ia bHLH gene, MpSETA, and a IIIb bHLH gene, MpICE2, regulate the cell division and/or differentiation of seta lineage cells. MpSETA can partially replace the stomatal function of Ia bHLH TFs inArabidopsis thaliana, suggesting that a common regulatory mechanism underlies setal and stomatal formation. Our findings reveal the co-option of a Ia-IIIb bHLH TF module for regulating cell fate determination and/or cell division of distinct types of cells during land plant evolution.