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KMID : 0613820090190010129
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Journal of Life Science
2009 Volume.19 No. 1 p.129 ~ p.137
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Functional Mechanism of Calmodulin for Cellular Responses in Plants
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Cho Eun-Kyung
Choi Young-Ju
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Abstract
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Calcium () plays pivotal roles as an intracellular second messenger in response to a variety of stimuli, including light, abiotic. and biotic stresses and hormones. sensor is -binding protein known to function in transducing signals by activating specific targets and pathways. Among -binding proteins, calmodulin (CaM) has been well reported to regulate the activity of down-stream target proteins in plants and animals. Especially plants possess multiple CaM genes and many CaM target proteins, including unique protein kinases and transcription factors. Thus, plants are possible to perceive different signals from their surroundings and adapt to the changing environment. However, the function of most of CaM or CaM-related proteins have been remained uncharacterized and unknown. Hence, a better understanding of the function of these proteins will help in deciphering their roles in plant growth, development and response to environmental stimuli. This review focuses on -CaM messenger system, CaM-associated proteins and their role in responses to external stimuli of both abiotic and biotic stresses in plants.
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KEYWORD
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Calcium, calmodulin, signal transduction, abiotic stress, biotic stress
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