info:eu-repo/semantics/article
RALF4/19 peptides interact with LRX proteins to control pollen tube growth in Arabidopsis
Fecha
2017-12-22Registro en:
Mecchia, Martin Alejandro; Santos Fernandez, Gorka; Duss, Nadine N.; Somoza, Sofia; Boisson-Dernier, Aurélien; et al.; RALF4/19 peptides interact with LRX proteins to control pollen tube growth in Arabidopsis; American Association for the Advancement of Science; Science; 358; 6370; 22-12-2017; 1600-1603
0036-8075
1095-9203
CONICET Digital
CONICET
Autor
Mecchia, Martin Alejandro
Santos Fernandez, Gorka
Duss, Nadine N.
Somoza, Sofia
Boisson-Dernier, Aurélien
Gagliardini, Valeria
Martínez Bernardini, Andrea
Fabrice, Tohnyui Ndinyanka
Ringli, Christoph
Muschietti, Jorge Prometeo
Grossniklaus, Ueli
Resumen
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.