RALF4/19 peptides interact with LRX proteins to control pollen tube growth in Arabidopsis

The communication of changes in the extracellularmatrix to the interior of the cell is crucial for a cell's function.The extracellular peptides of the RAPID ALKALINIZATION FACTOR (RALF) family have been identified as ligands of receptor-like kinases of the CrRLK1L subclass, but the exact mechan...

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Detalles Bibliográficos
Autores principales: Mecchia, M.A., Santos-Fernandez, G., Duss, N.N., Somoza, S.C., Boisson-Dernier, A., Gagliardini, V., Martínez-Bernardini, A., Fabrice, T.N., Ringli, C., Muschietti, J.P., Grossniklaus, U.
Formato: JOUR
Materias:
leucine rich repeat extensin
ligand
LRX protein
peptide
phosphotransferase
plant protein
RALF19
RALF4
rapid alkalinization factor
receptor like kinase
unclassified drug
Arabidopsis protein
carrier protein
protein kinase
RALF19 protein, Arabidopsis
RALF4 protein, Arabidopsis
cells and cell components
gene expression
genetic analysis
grass
pollen
protein
Arabidopsis
Article
cell function
cell wall
controlled study
extracellular matrix
nonhuman
pollen tube
priority journal
protein family
protein function
protein interaction
genetics
growth, development and aging
metabolism
Arabidopsis Proteins
Carrier Proteins
Cell Wall
Peptides
Pollen Tube
Protein Kinases
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00368075_v358_n6370_p1600_Mecchia
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The communication of changes in the extracellularmatrix to the interior of the cell is crucial for a cell's function.The extracellular peptides of the RAPID ALKALINIZATION FACTOR (RALF) family have been identified as ligands of receptor-like kinases of the CrRLK1L subclass, but the exact mechanism of their perception is unclear.We found that Arabidopsis RALF4 and RALF19 redundantly regulate pollen tube integrity and growth, and that their function depends on pollen-expressed proteins of the LEUCINE-RICH REPEAT EXTENSIN (LRX) family, which play a role in cell wall development but whose mode of action is not understood.The LRX proteins interact with RALFs, monitoring cell wall changes, which are communicated to the interior of the pollen tube via the CrRLK1L pathway to sustain normal growth.

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