Plant cells are surrounded by a cell wall, a rigid structure that is not only important for cell and organ shape, but crucial for intercellular communication and interactions with the environment. In the flowering plant Arabidopsis thaliana, the 17 members of the Catharanthus roseus RLK1-like (CrRLK1L) receptor kinase family are involved in a multitude of physiological and developmental processes, making it difficult to assess their primary or ancestral function. To reduce genetic complexity, we characterized the single CrRLK1L gene of Marchantia polymorpha, MpFERONIA (MpFER). Plants with reduced MpFER levels show defects in vegetative development, i.e., rhizoid formation and cell expansion, and have reduced male fertility. In contrast, Mpfer null mutants and overexpression lines severely affect cell integrity and morphogenesis of the gametophyte. Thus, the CrRLK1L gene family originated from a single gene with an ancestral function in cell expansion and the maintenance of cellular integrity. During land plant evolution, this ancestral gene diversified to fulfil a multitude of specialized physiological and developmental and roles in the formation of both gametophytic and sporophytic structures essential to the life cycle of flowering plants.
The single Marchantia polymorpha FERONIA homolog reveals an ancestral role in regulating cellular expansion and integrity
These authors contributed equally to the work
Present address: Kantonsschule Uetikon am See, 8708 Uetikon am See, Switzerland
- Award Group:
- Funder(s): Universitat Zurich
- Funder(s):
- Award Group:
- Funder(s): Monash University
- Funder(s):
- Award Group:
- Funder(s): Universitat Zurich
- Award Id(s): FK-16-090
- Funder(s):
- Award Group:
- Funder(s): Australian Research Council
- Award Id(s): DP130100177
- Funder(s):
- Award Group:
- Funder(s): Schweizerischer Nationalfonds zur Frderung der Wissenschaftlichen Forschung
- Award Id(s): 310030B_160336
- Funder(s):
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Martin A. Mecchia, Moritz Rövekamp, Alejandro Giraldo-Fonseca, Dario Meier, Philippe Gadient, Hannes Vogler, Daria Limacher, John L. Bowman, Ueli Grossniklaus; The single Marchantia polymorpha FERONIA homolog reveals an ancestral role in regulating cellular expansion and integrity. Development 2022; dev.200580. doi: https://doi.org/10.1242/dev.200580
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