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

Suzy Rogiers, Simon Clarke

Research output: Contribution to journalArticle

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.
Original languageEnglish
Pages (from-to)69-76
Number of pages8
JournalPlant Physiology and Biochemistry
Volume135
Publication statusPublished - 2019

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mesocarp
Vitis
small fruits
grapes
Fruit
cell death
fruits
Cell Death
cells
vines
ripening
brix
total soluble solids
Vitis vinifera
wind speed
transpiration
environmental factors
Light
Temperature
Water

Cite this

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title = "The role of fruit exposure in the late season decline of grape berry mesocarp cell vitality",
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 concentrationwere 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 (includingrain and exposure) on mesocarp cell death over the course of berry development, particularly in overripe fruit.",
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The role of fruit exposure in the late season decline of grape berry mesocarp cell vitality. / Rogiers, Suzy; Clarke, Simon.

In: Plant Physiology and Biochemistry, Vol. 135, 2019, p. 69-76.

Research output: Contribution to journalArticle

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AU - Rogiers, Suzy

AU - Clarke, Simon

PY - 2019

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AB - 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 concentrationwere 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 (includingrain and exposure) on mesocarp cell death over the course of berry development, particularly in overripe fruit.

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