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To preserve or to destroy, that is the question: the role of the cell wall integrity pathway in pollen tube growth


Vogler, Hannes; Santos-Fernandez, Gorka; Mecchia, Martin A; Grossniklaus, Ueli (2019). To preserve or to destroy, that is the question: the role of the cell wall integrity pathway in pollen tube growth. Current Opinion in Plant Biology, 52:131-139.

Abstract

In plants, cell-shape is defined by the cell wall, a complex network of polymers located outside the plasma membrane. During cell growth, cell wall properties have to be adjusted, assuring cell expansion without compromising cell integrity. Plasma membrane-located receptors sense cell wall properties, transducing extracellular signals into intracellular cascades through the cell wall integrity (CWI) pathway that, in turn, leads to adjustments in the regulation and composition of the cell wall. Using pollen tube growth as a single celled model system, we describe the importance of RAPID ALKALINIZATION FACTOR (RALF) peptides as sensors of cell wall integrity. RALF peptides can mediate the communication between cell wall components and plasma membrane-localized receptor-like kinases (RLKs) of the CrRLK1L family. The subsequent activation of intracellular pathways regulates H+, Ca2+, and ROS levels in the cell and apoplast, thereby modulating cell wall integrity. Interestingly, the RALF-CrRLK1L module and some of the components working up- and downstream of the RLK is conserved in many other developmental and physiological signaling processes.

Abstract

In plants, cell-shape is defined by the cell wall, a complex network of polymers located outside the plasma membrane. During cell growth, cell wall properties have to be adjusted, assuring cell expansion without compromising cell integrity. Plasma membrane-located receptors sense cell wall properties, transducing extracellular signals into intracellular cascades through the cell wall integrity (CWI) pathway that, in turn, leads to adjustments in the regulation and composition of the cell wall. Using pollen tube growth as a single celled model system, we describe the importance of RAPID ALKALINIZATION FACTOR (RALF) peptides as sensors of cell wall integrity. RALF peptides can mediate the communication between cell wall components and plasma membrane-localized receptor-like kinases (RLKs) of the CrRLK1L family. The subsequent activation of intracellular pathways regulates H+, Ca2+, and ROS levels in the cell and apoplast, thereby modulating cell wall integrity. Interestingly, the RALF-CrRLK1L module and some of the components working up- and downstream of the RLK is conserved in many other developmental and physiological signaling processes.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Plant and Microbial Biology
07 Faculty of Science > Zurich-Basel Plant Science Center
Dewey Decimal Classification:580 Plants (Botany)
Scopus Subject Areas:Life Sciences > Plant Science
Uncontrolled Keywords:Plant Science
Language:English
Date:1 December 2019
Deposited On:05 Feb 2020 16:31
Last Modified:29 Jul 2020 13:22
Publisher:Elsevier
ISSN:1369-5266
OA Status:Closed
Publisher DOI:https://doi.org/10.1016/j.pbi.2019.09.002
Project Information:
  • : FunderSNSF
  • : Grant ID31003A_179553
  • : Project TitleThe Molecular Basis of Female Gametophyte Development and Function
  • : FunderSNSF
  • : Grant ID310030B_160336
  • : Project TitleThe Genetic and Molecular Basis of Gametogenesis and Maternal Effects in Arabidopsis
  • : FunderSNSF
  • : Grant IDCR22I2_166110
  • : Project TitleMechanical Basis for the Convergent Evolution of Sensory Hairs in Animals and Plants

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