Adjustments of water use efficiency by stomatal regulation during drought and recovery in the drought-adapted Vitis hybrid Richter-110 (V. berlandieri x V. rupestris)

被引：132

作者：

Pou, Alicia ^{[1
]}

Flexas, Jaume ^{[1
]}

Alsina, Maria del Mar ^{[2
]}

Bota, Josefina ^{[1
]}

Carambula, Cecilia ^{[1
]}

de Herralde, Felicidad ^{[2
]}

Galmes, Jeroni ^{[1
]}

Lovisolo, Claudio ^{[3
]}

Jimenez, Miguel ^{[4
]}

Ribas-Carbo, Miquel ^{[1
]}

Rusjan, Denis ^{[5
]}

Secchi, Francesca ^{[3
]}

Tomas, Magdalena ^{[1
]}

Zsofi, Zsolt ^{[6
]}

Medrano, Hipolito ^{[1
]}

机构：

[1] Univ Illes Balears, Grp Recerca Biol Plantes Condic Mediterranies, Dept Biol, Palma de Mallorca 07122, Balears, Spain

[2] IRTA, Dept Tecnol Hort, E-08140 Barcelona, Spain

[3] Univ Turin, Dipartimento Colture Arboree, I-10095 Grugliasco, Italy

[4] Inst Invest & Formac Agr & Pesquera, La Mojonera 04745, Almeria, Spain

[5] Univ Ljubljana, Biotech Fac, SI-1001 Ljubljana, Slovenia

[6] Univ Zagreb, Dept Viticulture & Enol, H-3301 Eger, Kolyukteto, Hungary

来源：

PHYSIOLOGIA PLANTARUM | 2008年 / 134卷 / 02期

关键词：

D O I：

10.1111/j.1399-3054.2008.01138.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The hybrid Richter-110 (Vitis berlandieri x Vitis rupestris) (R-110) has the reputation of being a genotype strongly adapted to drought. A study was performed with plants of R-110 subjected to water withholding followed by re-watering. The goal was to analyze how stomatal conductance (g(s)) is regulated with respect to different physiological variables under water stress and recovery, as well as how water stress affects adjustments of water use efficiency (WUE) at the leaf level. Water stress induced a substantial stomatal closure and an increase in WUE, which persisted many days after re-watering. The g(s) during water stress was mainly related to the content of ABA in the xylem and partly related to plant hydraulic conductivity but not to leaf water potential. By contrast, low g(s) during re-watering did not correlate with ABA contents and was only related to a sustained decreased hydraulic conductivity. In addition to a complex physiological regulation of stomatal closure, g(s) and rate of transpiration (E) were strongly affected by leaf-to-air vapor pressure deficit (VPD) in a way dependent of the treatment. Interestingly, E increased with increasing VPD in control plants, but decreased with increasing VPD in severely stressed plants. All together, the fine stomatal regulation in R-110 resulted in very high WUE at the leaf level. This genotype is revealed to be very interesting for further studies on the physiological mechanisms leading to regulation of stomatal responsiveness and WUE in response to drought.

引用

页码：313 / 323

页数：11

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