RALF4/19 peptides interact with LRX proteins to control pollen tube growth in Arabidopsis.
Science
; 358(6370): 1600-1603, 2017 12 22.
Article
en En
| MEDLINE
| ID: mdl-29242232
ABSTRACT
The communication of changes in the extracellular matrix 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.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Proteínas Portadoras
/
Arabidopsis
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Proteínas de Arabidopsis
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Tubo Polínico
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Science
Año:
2017
Tipo del documento:
Article
País de afiliación:
Suiza