Calcium in Plants

Calcium is an essential plant nutrient. It is required for various structural roles in the cell wall and membranes, it is a counter‐cation for inorganic and organic anions in the vacuole, and the cytosolic Ca2+ concentration ([Ca2+]cyt) is an obligate intracellular messenger coordinating responses t...

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Bibliographic Details
Published in:Annals of botany 2003-10, Vol.92 (4), p.487-511
Main Authors: WHITE, PHILIP J., BROADLEY, MARTIN R.
Format: Article
Language:English
Subjects:
ATPase
Biological Transport - physiology
Calcium
calcium (Ca2+)
Calcium - metabolism
Calcium Channels - physiology
Calcium Signaling - physiology
Cell membranes
channel
cytosolic Ca2
ecology
Genes
Guard cells
H+/Ca2+‐antiport (CAX)
Key words: Arabidopsis
kinase
Models, Biological
phylogeny
Plant cells
Plant physiology
Plant roots
Plants
Plants - metabolism
plasma membrane
Protein isoforms
REVIEW ARTICLE
Reviews
root
vacuole
Xylem
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Summary:Calcium is an essential plant nutrient. It is required for various structural roles in the cell wall and membranes, it is a counter‐cation for inorganic and organic anions in the vacuole, and the cytosolic Ca2+ concentration ([Ca2+]cyt) is an obligate intracellular messenger coordinating responses to numerous developmental cues and environmental challenges. This article provides an overview of the nutritional requirements of different plants for Ca, and how this impacts on natural flora and the Ca content of crops. It also reviews recent work on (a) the mechanisms of Ca2+ transport across cellular membranes, (b) understanding the origins and specificity of [Ca2+]cyt signals and (c) characterizing the cellular [Ca2+]cyt‐sensors (such as calmodulin, calcineurin B‐like proteins and calcium‐dependent protein kinases) that allow plant cells to respond appropriately to [Ca2+]cyt signals.
ISSN:0305-7364
1095-8290
DOI:10.1093/aob/mcg164