Stomatal regulators are co-opted for seta development in the astomatous liverwort Marchantia polymorpha - CNRS - Centre national de la recherche scientifique Access content directly
Preprints, Working Papers, ... Year : 2023

Stomatal regulators are co-opted for seta development in the astomatous liverwort Marchantia polymorpha

Kenta Moriya
Yoriko Matsuda
  • Function : Author
Kentaro Tamura
Yoshito Oka
Tomonao Matsushita
Ikuko Hara-Nishimura
Gwyneth Ingram
Justin Goodrich
Takayuki Kohchi
Tomoo Shimada

Abstract

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 liverwort Marchantia 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, Mp SETA , and a IIIb bHLH gene, Mp ICE2 , regulate the cell division and/or differentiation of seta lineage cells. MpSETA can partially replace the stomatal function of Ia bHLH TFs in Arabidopsis thaliana , suggesting that a common regulatory mechanism underlies the 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.
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Dates and versions

hal-03812124 , version 1 (27-10-2023)

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Kenta Moriya, Makoto Shirakawa, Jeanne Loue-Manifel, Yoriko Matsuda, Yen-Ting Lu, et al.. Stomatal regulators are co-opted for seta development in the astomatous liverwort Marchantia polymorpha. 2023. ⟨hal-03812124⟩
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