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Endomembrane Ca2+-ATPases play a significant role in virus-induced adaptation to oxidative stress


Shabala, S and Baekgaard, L and Shabala, L and Fuglsang, AT and Cuin, TA and Nemchinov, LG and Palmgren, MG, Endomembrane Ca2+-ATPases play a significant role in virus-induced adaptation to oxidative stress, Plant Signalling & Behavior, 6, (7) pp. 1053-1056. ISSN 1559-2316 (2011) [Refereed Article]

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Copyright 2011 Landes Bioscience

DOI: doi:10.4161/psb.6.7.15634


Although the role of Ca2+ influx channels in oxidative stress signaling and cross-tolerance in plants is well established, little is known about the role of active Ca2+ efflux systems in this process. In our recent paper,17 we reported Potato Virus X (PVX)- induced acquired resistance to oxidative stress in Nicotiana benthamiana and showed the critical role of plasma membrane Ca2+/H+ exchangers in this process. The current study continues this research. Using biochemical and electrophysiological approaches, we reveal that both endomembrane P2A and P2B Ca2+-ATPases play significant roles in adaptive responses to oxidative stress by removing excessive Ca2+ from the cytosol, and that their functional expression is significantly altered in PVX-inoculated plants. These findings highlight the crucial role of Ca2+ efflux systems in acquired tolerance to oxidative stress and open up prospects for practical applications in agriculture, after in-depth comprehension of the fundamental mechanisms involved in common responses to environmental factors at the genomic, cellular and organismal levels.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other plant production and plant primary products
Objective Field:Other plant production and plant primary products not elsewhere classified
UTAS Author:Shabala, S (Professor Sergey Shabala)
UTAS Author:Shabala, L (Associate Professor Lana Shabala)
UTAS Author:Cuin, TA (Dr Tracey Cuin)
ID Code:72231
Year Published:2011
Deposited By:Agricultural Science
Deposited On:2011-08-24
Last Modified:2012-06-21

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