Apoplastic calcium executes a shut-down function on plant peroxidases: a hypothesis.

Plant Signaling & Behavior
Christoph Plieth

Abstract

Recently it was demonstrated that PO activity is switched by calcium within the typical range of apoplastic free calcium concentrations (Plieth and Vollbehr, Plant Signal Behav 2012;7: 650-660). The heat stability of POs is also dependent on calcium. Here, a scenario is put forward which assigns calcium a switch-off function under heat: Peroxidases are switched off by heat stress-triggered apoplastic calcium depletion. It is assumed that this initiates apoplastic accumulation of reactive oxygen species (ROS) and eventually triggers a self-amplifying cascade of cellular events involving plasma membrane ion transport. Calcium depletion-initiated ROS accumulation (CaDIRA) may also trigger signal percolation and the formation of systemic responses to many different stress factors in plants. This hypothesis can explain some as yet unexplained observations.

References

Jul 27, 1999·The Plant Journal : for Cell and Molecular Biology·C PliethM R Knight
May 30, 2001·Trends in Plant Science·H Knight, M R Knight
Aug 17, 2002·Current Opinion in Plant Biology·Steven NeillJohn Hancock
Sep 1, 1994·The Plant Cell·A. H. PriceM. R. Knight
Apr 25, 2003·Trends in Plant Science·Dong-Yul SungCharles L Guy
Jul 15, 2003·Plant Physiology·Hong-Tao LiuRen-Gang Zhou
Apr 17, 2004·The Plant Journal : for Cell and Molecular Biology·Inken LorenzenChristoph Plieth
May 8, 2004·Trends in Plant Science·Wangxia WangArie Altman
May 12, 2004·Current Opinion in Plant Biology·Christophe LaloiAntoine Danon
Jul 13, 2004·Plant Physiology·Maike C Rentel, Marc R Knight
Apr 23, 2005·Annals of Botany·Christoph Plieth
Jan 31, 2006·Phytochemistry·Nenad BakalovicChristophe Dunand
Jun 9, 2006·Plant Physiology·Moshe Sagi, Robert Fluhr
Jan 28, 2009·Plant Methods·Livia Saleh, Christoph Plieth
Jun 13, 2009·Journal of Plant Physiology·J Nagel-VolkmannK Dörffling
Feb 9, 2010·Plant Signaling & Behavior·Christoph Plieth
Dec 9, 2010·The New Phytologist·Younousse SaidiPierre Goloubinoff

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Citations

Feb 28, 2014·TheScientificWorldJournal·Lyuben ZagorchevMariela Odjakova
Mar 16, 2017·Frontiers in Plant Science·Muhammad Z IhsanJam N Ahmad

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