The state of cell wall pectin monitored by wall associated kinases: A model.
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ABSTRACT: The Wall Associated Kinases (WAKs) bind to both cross-linked polymers of pectin in the plant cell wall, but have a higher affinity for smaller fragmented pectins that are generated upon pathogen attack or wounding. WAKs are required for cell expansion during normal seedling development and this involves pectin binding and a signal transduction pathway involving MPK3 and invertase induction. Alternatively WAKs bind pathogen generated pectin fragments to activate a distinct MPK6 dependent stress response. Evidence is provided for a model for how newly generated pectin fragments compete for longer pectins to alter the WAK dependent responses.
SUBMITTER: Kohorn BD
PROVIDER: S-EPMC4622591 | biostudies-other | 2015
REPOSITORIES: biostudies-other
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