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Trends Plant Sci. 2014 Oct;19(10):623-30. doi: 10.1016/j.tplants.2014.06.013. Epub 2014 Jul 23.

A tidal wave of signals: calcium and ROS at the forefront of rapid systemic signaling.

Author information

1
Department of Botany, University of Wisconsin, Birge Hall, 430 Lincoln Drive, Madison, WI 53706, USA.
2
Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, 102-8554 Tokyo, Japan.
3
The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Life Sciences Building (204) Room 211, Ramat-Gan, 5290002 Israel.
4
Department of Botany, University of Wisconsin, Birge Hall, 430 Lincoln Drive, Madison, WI 53706, USA; PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.
5
Department of Biological Sciences, College of Arts and Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA.
6
Department of Biological Sciences, College of Arts and Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA. Electronic address: ron.mittler@unt.edu.

Abstract

Systemic signaling pathways enable multicellular organisms to prepare all of their tissues and cells to an upcoming challenge that may initially only be sensed by a few local cells. They are activated in plants in response to different stimuli including mechanical injury, pathogen infection, and abiotic stresses. Key to the mobilization of systemic signals in higher plants are cell-to-cell communication events that have thus far been mostly unstudied. The recent identification of systemically propagating calcium (Ca(2+)) and reactive oxygen species (ROS) waves in plants has unraveled a new and exciting cell-to-cell communication pathway that, together with electric signals, could provide a working model demonstrating how plant cells transmit long-distance signals via cell-to-cell communication mechanisms. Here, we summarize recent findings on the ROS and Ca(2+) waves and outline a possible model for their integration.

KEYWORDS:

Calcium; NADPH oxidase; reactive oxygen species; systemic signaling

PMID:
25088679
DOI:
10.1016/j.tplants.2014.06.013
[Indexed for MEDLINE]

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