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J Exp Bot. 2014 Dec;65(22):6337-58. doi: 10.1093/jxb/eru365. Epub 2014 Sep 26.

Plasmodesmata in integrated cell signalling: insights from development and environmental signals and stresses.

Author information

1
Department of Plant and Soil Sciences, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19711, USA.
2
Department of Plant and Soil Sciences, Delaware Biotechnology Institute, University of Delaware, Newark, DE 19711, USA lee@dbi.udel.edu.

Abstract

To survive as sedentary organisms built of immobile cells, plants require an effective intercellular communication system, both locally between neighbouring cells within each tissue and systemically across distantly located organs. Such a system enables cells to coordinate their intracellular activities and produce concerted responses to internal and external stimuli. Plasmodesmata, membrane-lined intercellular channels, are essential for direct cell-to-cell communication involving exchange of diffusible factors, including signalling and information molecules. Recent advances corroborate that plasmodesmata are not passive but rather highly dynamic channels, in that their density in the cell walls and gating activities are tightly linked to developmental and physiological processes. Moreover, it is becoming clear that specific hormonal signalling pathways play crucial roles in relaying primary cellular signals to plasmodesmata. In this review, we examine a number of studies in which plasmodesmal structure, occurrence, and/or permeability responses are found to be altered upon given cellular or environmental signals, and discuss common themes illustrating how plasmodesmal regulation is integrated into specific cellular signalling pathways.

KEYWORDS:

Plasmodesmata; biotic and abiotic stress; callose.; cell signalling; cell-to-cell communication; development; environmental stresses; hormones

PMID:
25262225
PMCID:
PMC4303807
DOI:
10.1093/jxb/eru365
[Indexed for MEDLINE]
Free PMC Article

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