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Type: Journal article
Title: The role of fruit exposure in the late season decline of grape berry mesocarp cell vitality
Author: Clarke, S.J.
Rogiers, S.Y.
Citation: Plant Physiology and Biochemistry, 2019; 135:69-76
Publisher: Elsevier
Issue Date: 2019
ISSN: 0981-9428
Statement of
Simon J. Clarke, Suzy Y. Rogiers
Abstract: 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.
Keywords: Fluorescein diacetate; Growing degree days; Syrah; Senescence
Description: Available online 27 November 2018
Rights: © 2018 Elsevier Masson SAS. All rights reserved.
DOI: 10.1016/j.plaphy.2018.11.025
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Appears in Collections:Agriculture, Food and Wine publications
ARC Training Centre for Innovative Wine Production publications
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