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Analysis of Protein Import into Chloroplasts Isolated from Stressed Plants
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Published on: November 1, 2016

Proline accumulation in plants: not only stress.

Roberto Mattioli1, Paolo Costantino, Maurizio Trovato

  • 1Istituto Pasteur Fondazione Cenci Bolognetti, Dipartimento di Genetica e Biologia Molecolare, Università di Roma La Sapienza, Rome, Italy.

Plant Signaling & Behavior
|December 17, 2009
PubMed
Summary

Proline, an amino acid, is crucial for plant development and reproduction. This review critically examines evidence for proline

Area of Science:

  • Plant Biology
  • Molecular and Cellular Biology
  • Biochemistry

Background:

  • Proline is known for its roles in protein synthesis and stress response in plant cells.
  • Emerging evidence suggests proline functions as both a metabolite and signaling molecule in plant development.
  • The importance of proline during the plant reproductive phase, from flowering to seed development, is increasingly recognized.

Purpose of the Study:

  • To review and critically discuss the existing evidence supporting a role for proline in plant development.
  • To highlight the specific involvement of proline in the transition to flowering.
  • To consolidate understanding of proline's functions as a metabolite and signal molecule in plant growth.

Main Methods:

  • Literature review and critical analysis of published research.

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  • Synthesis of evidence from various studies on proline's physiological and molecular roles.
  • Focus on recent findings related to proline and flower transition.

    • Main Results:

    • Circumstantial evidence supports proline's involvement in flowering and overall plant development.
    • Proline acts as both a metabolic intermediate and a signaling factor.
    • While its importance in reproduction is gaining consensus, precise molecular and genetic mechanisms are still under investigation.

    Conclusions:

    • Proline plays a significant, multifaceted role in plant development, particularly during reproductive stages.
    • Further research is needed to fully elucidate the molecular and genetic pathways governing proline's function in flowering and development.
    • Proline's dual role as a metabolite and signal molecule warrants continued investigation in plant science.