Does night-time transpiration contribute to anisohydric behaviour in a Vitis vinifera cultivar?

Suzy Rogiers, Dennis Greer, Ronald Hutton, Joseph Landsberg

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

The hypothesis that vines of the Semillon wine grape variety show anisohydric behaviour was tested, i.e. that tissue hydration is unstable under fluctuating environmental conditions. Stomatal conductance and transpiration rates from leaves were measured during the day and at night. Leaf water potential (l) in Semillon was negatively correlated to vapour pressure deficit (VPD) both predawn and during the day. Furthermore, l fell to significantly lower values than in any of the nine other varieties examined. Night-time values of stomatal conductance (gn) and transpiration (En) in Semillon were up to four times higher than in other varieties; plants enclosed in plastic bags overnight to reduce En resulted in better plant'soil equilibration so that predawn l in Semillon was the same as in Grenache. These data indicate that the hypothesis is supported, and that night-time transpiration contributes significantly to the low l values in Semillon during warm, dry nights. The other contributing factor is daytime stomatal conductance (gday), which in Semillon leaves was higher than in other varieties, although the decline in gday with increasing VPD was greater in Semillon than in Shiraz or Grenache. The high values of gday were associated with high rates of transpiration (Eday) by Semillon through a day when VPD reached 4.5 kPa. When compared to other varieties, Semillon was not unusual in terms of root length density, stomatal density, xylem sap abscisic acid, or leaf electrolyte leakage. Night-time and daytime water loss and insufficient stomatal regulation therefore account for the tendency to anisohydric behaviour shown by Semillon.
Original languageEnglish
Pages (from-to)3751-3763
Number of pages13
JournalJournal of Experimental Botany
Volume60
Issue number13
DOIs
Publication statusPublished - Jul 2009

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Vapor Pressure
Vitis
Vitis vinifera
transpiration
vapor pressure
cultivars
stomatal conductance
Xylem
Abscisic Acid
Water
Wine
Electrolytes
Plastics
Soil
leaves
wine grapes
plastic bags
leaf water potential
sap
vines

Cite this

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title = "Does night-time transpiration contribute to anisohydric behaviour in a Vitis vinifera cultivar?",
abstract = "The hypothesis that vines of the Semillon wine grape variety show anisohydric behaviour was tested, i.e. that tissue hydration is unstable under fluctuating environmental conditions. Stomatal conductance and transpiration rates from leaves were measured during the day and at night. Leaf water potential (l) in Semillon was negatively correlated to vapour pressure deficit (VPD) both predawn and during the day. Furthermore, l fell to significantly lower values than in any of the nine other varieties examined. Night-time values of stomatal conductance (gn) and transpiration (En) in Semillon were up to four times higher than in other varieties; plants enclosed in plastic bags overnight to reduce En resulted in better plant'soil equilibration so that predawn l in Semillon was the same as in Grenache. These data indicate that the hypothesis is supported, and that night-time transpiration contributes significantly to the low l values in Semillon during warm, dry nights. The other contributing factor is daytime stomatal conductance (gday), which in Semillon leaves was higher than in other varieties, although the decline in gday with increasing VPD was greater in Semillon than in Shiraz or Grenache. The high values of gday were associated with high rates of transpiration (Eday) by Semillon through a day when VPD reached 4.5 kPa. When compared to other varieties, Semillon was not unusual in terms of root length density, stomatal density, xylem sap abscisic acid, or leaf electrolyte leakage. Night-time and daytime water loss and insufficient stomatal regulation therefore account for the tendency to anisohydric behaviour shown by Semillon.",
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Does night-time transpiration contribute to anisohydric behaviour in a Vitis vinifera cultivar? / Rogiers, Suzy; Greer, Dennis; Hutton, Ronald; Landsberg, Joseph.

In: Journal of Experimental Botany, Vol. 60, No. 13, 07.2009, p. 3751-3763.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Does night-time transpiration contribute to anisohydric behaviour in a Vitis vinifera cultivar?

AU - Rogiers, Suzy

AU - Greer, Dennis

AU - Hutton, Ronald

AU - Landsberg, Joseph

N1 - Imported on 12 Apr 2017 - DigiTool details were: month (773h) = July 2009; Journal title (773t) = Journal of Experimental Botany. ISSNs: 1460-2431;

PY - 2009/7

Y1 - 2009/7

N2 - The hypothesis that vines of the Semillon wine grape variety show anisohydric behaviour was tested, i.e. that tissue hydration is unstable under fluctuating environmental conditions. Stomatal conductance and transpiration rates from leaves were measured during the day and at night. Leaf water potential (l) in Semillon was negatively correlated to vapour pressure deficit (VPD) both predawn and during the day. Furthermore, l fell to significantly lower values than in any of the nine other varieties examined. Night-time values of stomatal conductance (gn) and transpiration (En) in Semillon were up to four times higher than in other varieties; plants enclosed in plastic bags overnight to reduce En resulted in better plant'soil equilibration so that predawn l in Semillon was the same as in Grenache. These data indicate that the hypothesis is supported, and that night-time transpiration contributes significantly to the low l values in Semillon during warm, dry nights. The other contributing factor is daytime stomatal conductance (gday), which in Semillon leaves was higher than in other varieties, although the decline in gday with increasing VPD was greater in Semillon than in Shiraz or Grenache. The high values of gday were associated with high rates of transpiration (Eday) by Semillon through a day when VPD reached 4.5 kPa. When compared to other varieties, Semillon was not unusual in terms of root length density, stomatal density, xylem sap abscisic acid, or leaf electrolyte leakage. Night-time and daytime water loss and insufficient stomatal regulation therefore account for the tendency to anisohydric behaviour shown by Semillon.

AB - The hypothesis that vines of the Semillon wine grape variety show anisohydric behaviour was tested, i.e. that tissue hydration is unstable under fluctuating environmental conditions. Stomatal conductance and transpiration rates from leaves were measured during the day and at night. Leaf water potential (l) in Semillon was negatively correlated to vapour pressure deficit (VPD) both predawn and during the day. Furthermore, l fell to significantly lower values than in any of the nine other varieties examined. Night-time values of stomatal conductance (gn) and transpiration (En) in Semillon were up to four times higher than in other varieties; plants enclosed in plastic bags overnight to reduce En resulted in better plant'soil equilibration so that predawn l in Semillon was the same as in Grenache. These data indicate that the hypothesis is supported, and that night-time transpiration contributes significantly to the low l values in Semillon during warm, dry nights. The other contributing factor is daytime stomatal conductance (gday), which in Semillon leaves was higher than in other varieties, although the decline in gday with increasing VPD was greater in Semillon than in Shiraz or Grenache. The high values of gday were associated with high rates of transpiration (Eday) by Semillon through a day when VPD reached 4.5 kPa. When compared to other varieties, Semillon was not unusual in terms of root length density, stomatal density, xylem sap abscisic acid, or leaf electrolyte leakage. Night-time and daytime water loss and insufficient stomatal regulation therefore account for the tendency to anisohydric behaviour shown by Semillon.

KW - Drought responses

KW - Evaporative demand

KW - Semillon

KW - Stomatal regulation

KW - Water relations

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DO - 10.1093/jxb/erp217

M3 - Article

VL - 60

SP - 3751

EP - 3763

JO - Journal of Experimental Botany

JF - Journal of Experimental Botany

SN - 0022-0957

IS - 13

ER -