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

journal contribution
posted on 2023-05-17, 07:31 authored by Sergey ShabalaSergey Shabala, Baekgaard, L, Svetlana ShabalaSvetlana Shabala, Fuglsang, AT, Tracey Cuin, Nemchinov, LG, Palmgren, MG
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.

History

Publication title

Plant Signalling & Behavior

Volume

6

Issue

7

Pagination

1053-1056

ISSN

1559-2316

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Landes Bioscience

Place of publication

United States

Rights statement

Copyright 2011 Landes Bioscience

Repository Status

  • Restricted

Socio-economic Objectives

Other plant production and plant primary products not elsewhere classified

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