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Measuring Spatial and Temporal Ca2+ Signals in Arabidopsis Plants
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Ambient temperature signalling in plants.

Philip A Wigge1

  • 1Sainsbury Laboratory, Cambridge University, 47 Bateman Street, Cambridge CB2 1LR, United Kingdom.

Current Opinion in Plant Biology
|September 12, 2013
PubMed
Summary
This summary is machine-generated.

Plants sense and respond to ambient temperature changes, influencing growth and development. PHYTOCHROME INTERACTING FACTOR4 (PIF4) is a key regulator in these non-stressful temperature responses.

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Area of Science:

  • Plant Biology
  • Molecular Biology
  • Environmental Sensing

Background:

  • Plants experience daily and seasonal temperature fluctuations.
  • Ambient temperatures (12-27°C for Arabidopsis) significantly impact plant growth, development, disease resistance, and circadian rhythms without triggering stress responses.
  • Understanding these non-stressful temperature responses is crucial for plant science.

Purpose of the Study:

  • To review recent advances in understanding how plants perceive and respond to ambient temperature changes.
  • To highlight key molecular players involved in mediating temperature signals.
  • To discuss the role of chromatin modifications in temperature signal transduction.

Main Methods:

  • Literature review of recent research on plant thermomorphogenesis.
  • Focus on molecular mechanisms, including transcription factors and epigenetic modifications.
  • Analysis of studies on Arabidopsis thaliana as a model organism.

Main Results:

  • PHYTOCHROME INTERACTING FACTOR4 (PIF4), a bHLH transcription factor, acts as a central hub for responses to warmer ambient temperatures.
  • PIF4 mediates key developmental processes like flowering time and hypocotyl elongation.
  • Evidence suggests that changes in chromatin state are integral to transmitting temperature signals to the plant's transcriptome.

Conclusions:

  • Ambient temperature significantly influences plant development through specific molecular pathways.
  • PIF4 is a critical regulator integrating temperature cues with developmental programs.
  • Further research is needed to elucidate the precise mechanisms of temperature perception in plants.