Affordable Access

deepdyve-link
Publisher Website

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

Authors
  • Mecchia, Martin A1, 2, 3
  • Santos-Fernandez, Gorka1
  • Duss, Nadine N1
  • Somoza, Sofía C2
  • Boisson-Dernier, Aurélien4
  • Gagliardini, Valeria1
  • Martínez-Bernardini, Andrea1
  • Fabrice, Tohnyui Ndinyanka1
  • Ringli, Christoph1
  • Muschietti, Jorge P5, 6
  • Grossniklaus, Ueli7
  • 1 Department of Plant and Microbial Biology and Zurich-Basel Plant Science Center, University of Zurich, 8008 Zurich, Switzerland. , (Switzerland)
  • 2 Instituto de Investigaciones en Ingeniería Genética y Biología Molecular, Dr. Héctor Torres (INGEBI-CONICET), Vuelta de Obligado 2490, C1428ADN Buenos Aires, Argentina. , (Argentina)
  • 3 Fundación Instituto Leloir, IIBBA-CONICET, Buenos Aires, Argentina. , (Argentina)
  • 4 Biocenter, Botanical Institute, University of Cologne, 50674 Cologne, Germany. , (Germany)
  • 5 Instituto de Investigaciones en Ingeniería Genética y Biología Molecular, Dr. Héctor Torres (INGEBI-CONICET), Vuelta de Obligado 2490, C1428ADN Buenos Aires, Argentina. [email protected] [email protected] , (Argentina)
  • 6 Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Int. Güiraldes 2160, Ciudad Universitaria, Pabellón II, C1428EGA Buenos Aires, Argentina. , (Argentina)
  • 7 Department of Plant and Microbial Biology and Zurich-Basel Plant Science Center, University of Zurich, 8008 Zurich, Switzerland. [email protected] [email protected] , (Switzerland)
Type
Published Article
Journal
Science
Publisher
American Association for the Advancement of Science (AAAS)
Publication Date
Dec 22, 2017
Volume
358
Issue
6370
Pages
1600–1603
Identifiers
DOI: 10.1126/science.aao5467
PMID: 29242232
Source
Medline
License
Unknown

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.

Report this publication

Statistics

Seen <100 times