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CDPKs - a kinase for every Ca2+ signal?

A C Harmon1, M Gribskov, J F Harper

  • 1Dept of Botany, University of Florida, Gainesville 32611-8526, USA. harmon@botany.ufl.edu

Trends in Plant Science
|March 31, 2000
PubMed
Summary

Calcium ions (Ca2+) are crucial signals in plant and animal cells. Plants utilize unique calcium-binding regulatory protein kinases, beyond calmodulin, to control growth and development.

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Area of Science:

  • Plant biology
  • Cellular signaling
  • Molecular mechanisms

Background:

  • Cytoplasmic calcium concentration (Ca2+) is a key regulator of physiological responses in both plant and animal cells.
  • Calcium-binding proteins interpret Ca2+ signals, influencing cellular metabolism and gene expression.
  • While calmodulin is a universal calcium-binding protein, plants possess a distinct family of calcium-binding regulatory protein kinases.

Purpose of the Study:

  • To highlight the role of calcium signaling in plant physiology.
  • To introduce the family of plant-specific calcium-binding regulatory protein kinases.
  • To underscore the emerging evidence for their involvement in plant growth and development.

Main Methods:

  • Literature review of calcium signaling pathways in plants.
  • Analysis of the known functions of calcium-binding proteins, including calmodulin.
  • Examination of research on plant regulatory protein kinases.

Main Results:

  • Calcium ions (Ca2+) act as critical intracellular messengers in response to diverse stimuli.
  • Calcium-binding proteins, such as calmodulin, are essential for decoding Ca2+ signals.
  • Plant-specific calcium-binding regulatory protein kinases are increasingly recognized for their roles in development.

Conclusions:

  • Calcium signaling is fundamental to plant life.
  • Plant regulatory protein kinases represent a significant class of calcium sensors.
  • These kinases are vital for regulating various aspects of plant growth and development.
Keywords:
Non-programmatic

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