Abstract
It is shown that a sequential development of a series of enzyme systems occurs in the peel of the apple as the respiration climacteric develops in the whole fruit. The sequence of development of these systems, i.e. acetate incorporation into lipid, production of ethylene, incorporation of amino acid into protein and, finally, the decarboxylation of added malate (malate effect) is the same as that shown earlier for the short term (24 hr) aging of peel discs from pre-climacteric apples. As these systems appear in the initial discs from fruit passing through the climacteric they gradually cease to increase during the 24 hour aging period. Uptake studies show that none of the changes in these systems can be due solely to changes in the permeability of the tissue over the climacteric period. On the basis of these results it is tentatively suggested that the aging of discs from pre-climacteric tissue might provide a model system for a detailed study of the physiological and biochemical changes occurring during the climacteric of apple fruits.
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Selected References
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- Lance C., Hobson G. E., Young R. E., Biale J. B. Metabolic processes in cytoplasmic particles of the avocado fruit. IX. The oxidation of pyruvate and malate during the climacteric cycle. Plant Physiol. 1967 Apr;42(4):471–478. doi: 10.1104/pp.42.4.471. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nelson R. C. QUANTITATIVE STUDY OF THE PRODUCTION OF ETHYLENE BY RIPENING MCINTOSH APPLES. Plant Physiol. 1940 Jan;15(1):149–151. doi: 10.1104/pp.15.1.149. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Richmond A., Biale J. B. Protein and nucleic acid metabolism in fruits. II. RNA synthesis during the respiratory rise of the avocado. Biochim Biophys Acta. 1967 May 30;138(3):625–627. doi: 10.1016/0005-2787(67)90565-5. [DOI] [PubMed] [Google Scholar]
- Richmond A., Biale J. B. Protein synthesis in avocado fruit tissue. Arch Biochem Biophys. 1966 Jul;115(1):211–214. doi: 10.1016/s0003-9861(66)81059-7. [DOI] [PubMed] [Google Scholar]
- Sacher J. A. Permeability Characteristics and Amino Acid Incorporation during Senescence (Ripening) of Banana Tissue. Plant Physiol. 1966 Apr;41(4):701–708. doi: 10.1104/pp.41.4.701. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Young R. E., Biale J. B. Phosphorylation in avocado fruit slices in relation to the respiratory climacteric. Plant Physiol. 1967 Oct;42(10):1357–1362. doi: 10.1104/pp.42.10.1357. [DOI] [PMC free article] [PubMed] [Google Scholar]