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Related Concept Videos

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Cell Signaling in Plants

Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
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Breaking the code: Ca2+ sensors in plant signalling.

Thomas A DeFalco1, Kyle W Bender, Wayne A Snedden

  • 1Department of Biology, Queen's University, Kingston, Ontario, Canada K7L 3N6.

The Biochemical Journal
|December 17, 2009
PubMed
Summary
This summary is machine-generated.

Calcium ions (Ca2+) are crucial plant cell messengers. This review explores calcium-binding proteins like calmodulins (CaMs), CaM-like proteins (CMLs), calcium-dependent protein kinases (CDPKs), and calcineurin B-like proteins (CBLs), integrating current knowledge on their roles.

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Area of Science:

  • Plant molecular biology
  • Cell signaling

Background:

  • Calcium ions (Ca2+) act as vital second messengers in plant cells.
  • EF-hand motif proteins sense Ca2+ through conformational changes, regulating target proteins and signaling pathways.

Purpose of the Study:

  • To review recent advances in plant Ca2+-binding sensor research.
  • To integrate knowledge on Calmodulin (CaM), CaM-like proteins (CMLs), Calcium-Dependent Protein Kinases (CDPKs), and Calcineurin B-like proteins (CBLs).

Main Methods:

  • Literature review of recent research on CaM, CML, CDPK, and CBL proteins.
  • Integration of current knowledge on different Ca2+ sensor classes.

Main Results:

  • Plants possess diverse EF-hand Ca2+-binding proteins, including large families of CaMs, CMLs, CDPKs, and CBLs.
  • Many of these Ca2+ sensor proteins remain biochemically uncharacterized with unclear physiological roles.

Conclusions:

  • Understanding Ca2+ sensor proteins is key to deciphering plant development and environmental responses.
  • Integrating knowledge across CaM, CML, CDPK, and CBL families can reveal common physiological themes in plant signaling.