Biologia Plantarum · 2007 · 34 citations · 22 references
Life SciencesPlant BiologyPlant SciencesPlant BiochemistryPlant GeneticsPlant PhysiologyCold HardinessCold Stress PhysiologyFreezing InjuryPlant Hormone SignalingPlant Transcriptional RegulationStress BiochemistryBiochemical Basis Of ToleranceCellular Dehydration ResponseCold-induced Sugar AccumulationFreezingFreezing Injury ResistancePhysiological Basis Of TolerancePlant Cold Stress PhysiologySugar Accumulation
The freezing sensitivity in the gi-3 mutant (an allele of the gigantea mutant) was associated with a constitutive reduction in soluble sugar content. Although sugar accumulation was evident in wild-type plants in response to cold treatment, the gi-3 mutant showed a constitutive reduction in soluble sugar content. There were no significant differences in the proline content and the transcript levels of cold-responsive gene RD29A and abscisic acid-responsive gene RAB18 between the wild type and the gi-3 mutant in response to cold treatment. These results suggest that freezing sensitivity in the gi-3 mutant is associated with sugar deficiency.
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