Detection of ripening-related proteins in stone fruit

Barry McGlasson, Paul Holford

    Research output: Chapter in Book / Conference PaperConference Paper

    Abstract

    The objective of this research was to identify ripening-related proteins in stone fruit that can be used as an index of ripening and whose expression is not affected by growing conditions. The initial research was conducted with Japanese type plums. Fruit were harvested at several stages during development, including optimum commercial harvest maturity, as determined by changes in skin colour, firmness, titratable acidity, soluble solids concentrations and storage life at 00C. Total proteins were extracted from the fruit and separated by 2-D polyacrylamide gel electrophoresis. Four proteins were detected that are synthesised a few days before ideal commercial maturity. Closely related proteins were also found in extracts of maturing peaches and nectarines. Monoclonal antibodies (mAbs) were raised against conjugated oligopeptides designed from amino acid sequence data from two of the proteins. However, the mAbs could not reliably detect the proteins either in protein extracts or juice samples from fresh fruit. Research is continuing on the properties of the ripening-related proteins that should enable the development of a highly sensitive immunological field test of maturity.
    Original languageEnglish
    Title of host publicationProceedings of the 5th International Peach Symposium, 8-11 July 2001 Davis, California, USA
    PublisherInternational Society for Horticultural Science
    Number of pages7
    ISBN (Print)9066058366
    Publication statusPublished - 2001
    EventInternational Peach Symposium -
    Duration: 17 Jun 2013 → …

    Publication series

    Name
    ISSN (Print)0567-7572

    Conference

    ConferenceInternational Peach Symposium
    Period17/06/13 → …

    Keywords

    • prunus
    • gel electrophoresis
    • monoclonal antibodies
    • maturation
    • cold storage
    • stone fruit

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