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Ca2+-CBL-CIPK: a modulator system for efficient nutrient acquisition.

Pooja Verma1, Sibaji K Sanyal1, Girdhar K Pandey2

  • 1Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, 110021, India.

Plant Cell Reports
|August 20, 2021
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Summary
This summary is machine-generated.

Plants use calcium signaling via CBL-CIPK complexes to manage nutrient levels during stress. This pathway regulates nutrient transport and homeostasis, crucial for plant survival and development.

Keywords:
Adaptation to nutrient stressCBL–CIPKCalcium signalingIon homeostasisIon toxicityNutrient deficiency

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Area of Science:

  • Plant Biology
  • Molecular Signaling
  • Nutrient Homeostasis

Background:

  • Calcium (Ca2+) acts as a vital second messenger in plant growth and stress responses.
  • CBL (calcineurin B-like) and CIPK (CBL-interacting protein kinase) proteins form key Ca2+ decoding complexes.
  • These complexes are central to sensing and transducing environmental signals, including nutrient stress.

Purpose of the Study:

  • To review the role of the Ca2+-CBL-CIPK pathway in plant nutrient homeostasis.
  • To explore how this pathway regulates cellular osmoregulation under nutrient excess or deprivation.
  • To connect nutrient uptake and distribution with signaling for plant development and survival.

Main Methods:

  • Literature review of recent studies on Ca2+-CBL-CIPK signaling.
  • Analysis of identified downstream targets, including ion channels and transporters.
  • Examination of the pathway's role in maintaining nutrient equilibrium.

Main Results:

  • The Ca2+-CBL-CIPK pathway modulates ion transporters/channels involved in nutrient transport.
  • This modulation is essential for maintaining homeostasis of key nutrients (K+, NO3-, NH4+, Mg2+, Zn2+, B, Fe2+).
  • The pathway links root nutrient uptake to systemic distribution and homeostasis.

Conclusions:

  • The Ca2+-CBL-CIPK pathway is critical for plant adaptation to varying soil nutrient conditions.
  • This signaling network plays a significant role in cellular osmoregulation and overall plant survival.
  • Understanding this pathway offers insights into improving plant vigor and yield under environmental stress.