Plant Physiol. 1966 Dec;41(10):1662-6. doi: 10.1104/pp.41.10.1662.
Plant physiology
C C Craft
PMID: 16656455 PMCID: PMC550590 DOI: 10.1104/pp.41.10.1662
Oxygen uptake and tetrazolium reduction occurred at higher rates in discs from potato tubers (Solanum tuberosum L.) stored at 0 degrees than in discs from tubers stored at 12.8 degrees . Tetrazolium reduction was at a higher rate in mitochondrial fractions from tubers stored at 0 degrees than in mitochondrial fractions from tubers stored at 12.8 degrees . These physiological activities were more resistant to hypertonic KCl treatments in tissue and mitochondrial fractions from tubers stored at 0 degrees than in tissue and mitochondrial fractions from tubers stored at 12.8 degrees . Inhibition of O(2) uptake and tetrazolium reduction progressively increased with increasing concentrations of KCl for tissue and mitochondrial fractions from tubers stored at 0 and 12.8 degrees , but inhibition was more severe and occurred at lower concentrations of KCl for the material from tubers stored at 12.8 degrees . Tissue from tubers stored at 0 degrees was at the same time more sensitive to hypotonic solutions and more resistant to hypertonic solutions than corresponding tissue from tubers stored at 12.8 degrees . Adaptive changes brought on in the tubers by the stress of cold storage were demonstrated in the discs and mitochondrial fractions prepared from cold-stored tubers.
