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Updated: Feb 17, 2026

Medium Preparation for the Cultivation of Microorganisms under Strictly Anaerobic/Anoxic Conditions
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Acid growth: an ongoing trip.

Giulia Arsuffi1, Siobhan A Braybrook1

  • 1The Sainsbury Laboratory, University of Cambridge, UK.

Journal of Experimental Botany
|December 7, 2017
PubMed
Summary
This summary is machine-generated.

Acid growth, a plant hormone response, is now better understood through molecular insights into auxin signaling and cell wall mechanics. This review updates the acid growth model with new findings and open questions.

Keywords:
Acid growthauxincell growthcell wallpH

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Area of Science:

  • Plant biology
  • Molecular plant physiology
  • Biochemistry

Background:

  • The acid growth hypothesis, proposed ~50 years ago, explains plant cell elongation in response to auxin.
  • Early research faced limitations due to diverse experimental systems and methodologies.
  • Recent advances have elucidated molecular mechanisms linking auxin to apoplastic pH changes and cell wall dynamics.

Purpose of the Study:

  • To review the historical development and challenges of acid growth research.
  • To integrate recent molecular and biochemical findings into the understanding of acid growth.
  • To present an updated model of acid growth incorporating new insights and future research directions.

Main Methods:

  • Literature review of historical and contemporary research on acid growth.
  • Analysis of molecular mechanisms of auxin signal transduction.
  • Examination of cell wall properties and biochemical components involved in growth.

Main Results:

  • Identification of key molecular players in auxin-induced apoplastic pH shifts.
  • Understanding the impact of pH changes on cell wall extensibility and enzymatic activity.
  • Integration of historical data with new molecular insights.

Conclusions:

  • Modern research has significantly clarified the molecular basis of acid growth.
  • An updated model incorporating new findings provides a more comprehensive view of the process.
  • Further research is needed to address remaining questions and refine the model.