The role of fruit exposure in the late season decline of grape berry mesocarp cell vitality

Simon Clarke, Suzy Rogiers

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    Loss of cell vitality in the mesocarp of grape (Vitis vinifera L.) berries during late ripening is programmed and under genetic control. Environmental factors such as temperature and vine water status, however, have a strong influence on the onset and extent of cell death. Following preliminary observations made on field experiment fruit, the hypothesis that exposure (increased light interception and wind velocity) at the berry level is important to the progression of cell death was tested. Transpiration, mesocarp cell vitality and total soluble solids concentration
    were compared in exposed and sheltered berries within single Shiraz vines. At oenological maturity (24 °Brix), exposed berries exhibited the same extent of cell death as sheltered berries, and it was not until four weeks later that cell death was more extensive in the exposed treatment. Therefore, under the conditions of this study, increased exposure over the ripening period was not a strong predictor of the extent of cell vitality at maturity. However, the results are consistent with an increase in the importance of environmental effects (including
    rain and exposure) on mesocarp cell death over the course of berry development, particularly in overripe fruit.
    Original languageEnglish
    Pages (from-to)69-76
    Number of pages8
    JournalPlant Physiology and Biochemistry
    Publication statusPublished - Feb 2019


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