Freezing Tolerance in Plants Requires Lipid Remodeling at the Outer Chloroplast Membrane

@article{Moellering2010FreezingTI,
  title={Freezing Tolerance in Plants Requires Lipid Remodeling at the Outer Chloroplast Membrane},
  author={Eric R. Moellering and Bagyalakshmi Muthan and Christoph Benning},
  journal={Science},
  year={2010},
  volume={330},
  pages={226 - 228}
}
Freezing Tolerance Explained Freezing temperatures exact a toll on plant cells through various mechanisms, including disruption of water balances as ice crystals form. Cellular and organelle lipid bilayers are also put under stress. Moellering et al. (p. 226, published online 26 August; see the Perspective by Browse) analyzed the function of a protein in the model plant, Arabidopsis thaliana that, when disrupted, leaves plants more susceptible to damage by freezing. The protein, SENSITIVE TO… 

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References

SHOWING 1-10 OF 41 REFERENCES

A role for SENSITIVE TO FREEZING2 in protecting chloroplasts against freeze-induced damage in Arabidopsis.

It is shown that homologous genes are present, and expressed, in a wide range of terrestrial plants, including species not able to tolerate freezing, and expression constructs derived from the cDNAs of a number of different plant species are able to complement the freezing sensitivity of the Arabidopsis sfr2 mutant.

PLANT COLD ACCLIMATION: Freezing Tolerance Genes and Regulatory Mechanisms.

  • M. Thomashow
  • Environmental Science, Biology
    Annual review of plant physiology and plant molecular biology
  • 1999
This review of recent advances in determining the nature and function of genes with roles in freezing tolerance and the mechanisms involved in low temperature gene regulation and signal transduction concludes that cold acclimation includes the expression of certain cold-induced genes that function to stabilize membranes against freeze-induced injury.

Mode of action of the COR15a gene on the freezing tolerance of Arabidopsis thaliana.

It is proposed that COR15am, which is located in the chloroplast stroma, defers freeze-induced formation of the hexagonal II phase to lower temperatures (lower hydrations) by altering the intrinsic curvature of the inner membrane of the chloroplasts envelope.

Cold Acclimation of Arabidopsis thaliana (Effect on Plasma Membrane Lipid Composition and Freeze-Induced Lesions)

Maximum freezing tolerance of Arabidopsis thaliana L. Heyn (Columbia) was attained after 1 week of cold acclimation at 2[deg]C. During this time, there were significant changes in both the lipid

Differential Degradation of Extraplastidic and Plastidic Lipids during Freezing and Post-freezing Recovery in Arabidopsis thaliana*

Data suggest a negative role for PLDα1 and a positive role forPLDδ in freezing tolerance, and distinctly different changes in lipid hydrolysis occur in freezing and post-freezing recovery.

The SENSITIVE TO FREEZING2 Gene, Required for Freezing Tolerance in Arabidopsis thaliana, Encodes a β-Glucosidase

After purification from a heterologous expression system, AtSFR2 displayed a specific hydrolytic activity against β-d-glucosides, and its identical freezing-sensitive phenotype confirmed that the SFR2 gene product is essential for freezing tolerance.

A prominent role for the CBF cold response pathway in configuring the low-temperature metabolome of Arabidopsis.

The results indicate that the metabolome of Arabidopsis is extensively reconfigured in response to low temperature, and that the CBF cold response pathway has a prominent role in this process.

Research on plant abiotic stress responses in the post-genome era: past, present and future.

Recent progress in abiotic stress studies, especially in the post-genomic era, is summarized, new perspectives on research directions for the next decade are offered, and the availability of the complete genome sequence has facilitated access to essential information.

Freezing Sensitivity in the sfr4 Mutant of Arabidopsis Is Due to Low Sugar Content and Is Manifested by Loss of Osmotic Responsiveness1

Results indicate that the freezing sensitivity of cold-acclimated sfr4 is due to its continued susceptibility to LOR (associated with lyotropic formation of the hexagonal II phase) and associated with the low sugar content of its cells.

Depletion of the Membrane-Associated Acyl-Coenzyme A-Binding Protein ACBP1 Enhances the Ability of Cold Acclimation in Arabidopsis1[OA]

ACBP1 overexpressors demonstrated increased freezing sensitivity accompanied by a decrease in PC and an increase in phosphatidic acid (PA), while acbp1 mutant plants showed enhanced freezing tolerance associated with PC accumulation and PA reduction, suggesting that the ACBP1-mediated response is PLD associated and is independent of osmolyte accumulation.