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In SYNC: The Ins and Outs of Circadian Oscillations in Calcium

Many stimuli induce short-term increases in the cytosolic concentration of free calcium ions ([Ca2+]i) that encode signaling information about diverse physiological and developmental events. Slow cytosolic Ca2+ oscillations that span an entire day have also been discovered in both plants and animals; it is thought that these daily Ca2+ oscillations may encode circadian clock signaling information. A recent study focusing on the characterization of the extracellular Ca2+-sensing receptor (CAS) has provided insight into the molecular mechanisms by which the daily Ca2+ oscillation in plants is generated. We summarize the major findings regarding daily oscillations of cytosolic Ca2+ concentrations in plants and animals, and discuss hypothetical biological roles for the circadian clock–regulated physiology in plants.

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Resource Type: Bibliography, Diagram, Illustration, Journal article/Issue, Review
Audience Level: Undergraduate upper division 15-16, Graduate, Professional (degree program)

Author and Copyright

Authors and Editors: Takato Imaizumi of Department of Biochemistry, Scripps Research Institute, Julian I. Schroeder of University of California, San Diego, Steve A. Kay of Department of Biochemistry, Scripps Research Institute
Publisher: American Association for the Advancement of Science
Format: application/pdf, image/gif, image/jpeg, text/html
Copyright and other restrictions: Yes
Cost: Yes


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