Peptides and the Regulation of Plant Homeostasis

  • Chris Gehring
  • Helen R. Irving
Part of the Signaling and Communication in Plants book series (SIGCOMM, volume 16)


Homeostasis defines the property of living organisms to keep a stable internal environment despite considerable external fluctuations, and this process is of considerable importance to plants as they are trapped unmoving in their changing surroundings. In addition to plant hormones, signaling peptides also have role(s) in maintaining plant homeostasis. Plant natriuretic peptides (PNPs) modulate ion channels and water uptake and have been implicated as compounds important in maintaining homeostasis. PNP and molecular mimics produced by pathogens modulate photosynthesis and the chloroplast proteome, thus indicating that PNP has widespread effects on homeostasis and could be considered a prototype homeostatic peptide. We propose that other peptides such as phytosulfokines (PSKs) and rapid alkalinization factors (RALFs) that have recognized roles in development and defense also have functions in plant homeostasis.


Guanylate Cyclase Tracheary Element Leaf Mesophyll Cell Messenger cGMP Ancient Horizontal Gene Transfer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by the Australian Research Council’s Discovery project funding scheme (DP0557561, DP0878194).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Division of Chemistry, Life Science and Engineering4700 King Abdullah University of Science and TechnologyThuwalKingdom of Saudi Arabia
  2. 2.Monash Institute of Pharmaceutical SciencesMonash UniversityParkvilleAustralia

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