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Gene expression during cold acclimation in strawberry

C NDong1, F Ouellet, M Houde

  • 1Département des Sciences biologiques, Université du Québec à Montréal, Canada.

Plant & Cell Physiology
|July 1, 1997
PubMed
Summary
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Researchers identified cold-acclimation genes in strawberry (Fragaria x anannassa). Fcor1 transcript levels correlate with freezing tolerance, suggesting its potential as a molecular marker for cold hardiness in Rosaceae species.

Area of Science:

  • Plant Molecular Biology
  • Plant Physiology
  • Cold Acclimation

Background:

  • Cold acclimation is crucial for plant survival in low temperatures.
  • Understanding the molecular mechanisms of cold acclimation in crops like strawberry is vital for agricultural resilience.

Purpose of the Study:

  • To identify and characterize genes involved in low-temperature (LT) acclimation in strawberry (Fragaria x anannassa).
  • To investigate the expression patterns and potential functions of novel LT-responsive genes.

Main Methods:

  • Differential screening of a cDNA library from cold-acclimated strawberry plants.
  • Northern blot analysis to determine transcript levels of isolated cDNAs (Fcor1, Fcor2, Fcor3).
  • Sequence analysis and homology searches for deduced protein products.

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Main Results:

  • Isolated three differentially expressed cDNAs: Fcor1, Fcor2, and Fcor3.
  • Fcor1 and Fcor2 showed peak expression at different LT exposure times, while Fcor3 decreased rapidly.
  • Fcor1 transcript levels positively correlated with strawberry freezing tolerance, suggesting its role as a potential molecular marker.

Conclusions:

  • Identified novel cold-regulated genes in strawberry, contributing to the understanding of plant cold acclimation.
  • Fcor1 shows promise as a molecular marker for selecting freezing tolerance in strawberry and related species.