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  3. Auxin Response Factor Thermostability.
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  3. Auxin Response Factor Thermostability.

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AUXIN RESPONSE FACTOR thermostability.

Edward G Wilkinson1, Katelyn Sageman-Furnas1,2, Matías Ezequiel Pereyra3

  • 1Biology Department, Duke University, Durham, NC, USA.

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|March 28, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Plants rapidly adjust growth with temperature by altering AUXIN RESPONSE FACTOR (ARF) protein levels. Elevated temperatures cause ARF proteins to accumulate and become more soluble, influencing plant form.

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Area of Science:

  • Plant biology
  • Molecular biology
  • Genetics

Background:

  • Plant development is influenced by environmental cues, particularly temperature.
  • Auxin signaling pathways are crucial for mediating plant responses to environmental stimuli.
  • AUXIN RESPONSE FACTOR (ARF) transcription factors play key roles in auxin-mediated growth and development.

Purpose of the Study:

  • To investigate the impact of temperature on the accumulation and solubility of AUXIN RESPONSE FACTOR (ARF) proteins.
  • To understand the role of ARF protein dynamics in plant thermomorphogenesis.

Main Methods:

  • Analysis of ARF protein levels and localization under varying temperature conditions.
  • Investigating the relationship between ARF protein solubility and temperature.
  • Correlating natural variation in ARF thermoregulation with plant responses to temperature.

    • Main Results:

    • Elevated temperatures induce rapid hyperaccumulation of ARF7 and ARF19 proteins.
    • Increased protein solubility of ARFs observed at higher temperatures.
    • Temperature-driven ARF accumulation is partially independent of known temperature response pathways.
    • Natural variation in ARF thermoregulation is linked to thermomorphogenesis.

    Conclusions:

    • Temperature-regulated ARF protein accumulation and solubility represent a novel mechanism for plant growth modulation.
    • This provides a rapid and persistent response to elevated temperatures, influencing plant architecture.
    • ARF thermoaccumulation acts as a 'dial switch' in plant temperature response, adding complexity to growth regulation.