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Integrated Calcium Signaling in Plants

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Signaling in Plants

Part of the book series: Signaling and Communication in Plants ((SIGCOMM))

Abstract

Calcium ion (Ca2+) is the most important universal signal carrier used by living organisms, including plants, to convey information to many different cellular processes. The cytosolic free Ca2+ concentration ([Ca2+]cyt) has been found to increase in response to many physiological stimuli, including stress. The Ca2+ spikes normally result from two opposing reactions, Ca2+ influx through channels or Ca2+ efflux through pumps. The removal of increased Ca2+ from the cytosol to either the apoplast or intracellular organelles requires energized “active” transport. Ca2+-ATPases and Ca2+/H+ antiporters are the key proteins catalyzing this movement. The increased level of Ca2+ is recognized by some Ca2+ sensors or calcium-binding proteins, which can activate many calcium-dependent protein kinases. The regulation of gene expression by cellular Ca2+ is also crucial for plant defense against various stresses. In this chapter several aspects of calcium signaling, such as Ca2+ requirement, Ca2+ transporters/pumps (Ca2+-ATPases, Ca2+/H+ antiporter), Ca2+ signature, Ca2+ memory, and various Ca2+-binding proteins, are presented.

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Acknowledgements

I thank Renu Tuteja for critical reading of and corrections to the article. This work was partially supported by the grant from the Department of Biotechnology (DBT), Government of India. I apologize to the many scientists whose work I was not able to credit owing to space restrictions. In most cases, reviews have been cited at the expense of the original work.

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  1. Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi, 110 067, India

    Narendra Tuteja

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    Tuteja, N. (2009). Integrated Calcium Signaling in Plants. In: Mancuso, S., Balu¿ka, F. (eds) Signaling in Plants. Signaling and Communication in Plants. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-89228-1_2

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