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Calcium-mediated signal transduction in plants: A perspective on the role of $Ca ^ {2+}$ and CDPKs during early plant development

Anil, Veena S and Rao, Sankara K (2001) Calcium-mediated signal transduction in plants: A perspective on the role of $Ca ^ {2+}$ and CDPKs during early plant development. In: Journal of Plant Physiology, 158 (10). pp. 1237-1256.

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Abstract

In plants, calcium acts as a second messenger in the regulation of a variety of physiological and metabolic processes. For signal transduction via calcium, transient and often local elevations in the level of cytosolic $Ca ^ {2+}$ must occur. This requires a well-controlled co-operation of tightly regulated $Ca ^ {2+}$-channels and active $Ca^{2+}$-transporters such as primary $Ca^{2+}$-ATPases and the $H^+/Ca^{2+}$ antiporters found both at the plasma membrane and endomembranes. Downstream events in calcium signaling involve $Ca ^ {2+}$-binding proteins and protein kinases that sense, amplify and transduce the $Ca ^ {2+}$-signal further downstream. This review gives an overview of the $Ca ^ {2+}$-messenger system and its components in plants. Although endosperm development, embryogenesis and germination are dynamic and intriguing developmental processes in the life cycle of plants, very little is known about the signaling events that regulate them. Recent observations suggest the involvement of $Ca ^ {2+}$-mediated signaling and $Ca ^ {2+}$-dependent protein kinases during these early-developmental processes in plants. A perspective of $Ca ^ {2+}$-signaling during seed development and germination is presented.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Urban and Fischer Verlag.
Keywords: Embryogenesis;Ca2+ second messenger system;Ca2+ sensor proteins;Calmodulin;Calmodulin-like domain protein kinase;Ca2+ dependent protein kinase;CaM kinase;germination;signal transduction
Department/Centre: Division of Biological Sciences > Biochemistry
Date Deposited: 11 Oct 2007
Last Modified: 19 Sep 2010 04:40
URI: http://eprints.iisc.ernet.in/id/eprint/12220

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