Grape vine varieties Shiraz and Grenache differ in their stomatal response to VPD: apparent links with ABA physiology and gene expression in leaf tissue
By C. Soar, J. Speirs, S. Maffei, A. B. Penrose, M. McCarthy, B. Loveys. 2006
224 citations recorded by the source corpus.
Two cultivars of Vitis vinifera L., namely Grenache and Shiraz, have been described as having near-isohydric and near-anisohydric responses respectively to soil water stress (Schultz, Plant Cell and Environment, 26, 1393-1405, 2003). Given that contrast in sensitivity to soil water, a question arises as to whether atmospheric moisture stress will elicit similar differences. The present study was undertaken to investigate this issue by comparing stomatal responses in these same two cultivars to contrasting vapour pressure deficit (VPD). Test material included field grape vines in the Barossa Valley and pot-grown vines under partial shade in Adelaide. Our experiments showed that the same isohydric/anisohydric distinction as described by Schultz (2003) is apparent in leaf responses to atmospheric moisture stress. In the more isohydric cultivar, Grenache, stomatal conductance is more responsive to changes in VPD. This heightened sensitivity (compared with Shiraz) appears to be associated with higher levels of abscisic acid (ABA) in Grenache xylem sap. Expression studies on the key genes in the ABA biosynthetic pathway indicate that regulation of the V.v.nced1 gene expression in leaf tissue, but not in the root tissues, is associated with the changes in the xylem sap ABA. Moreover, the two cultivars (Grenache and Shiraz) differed with respect to both scale and time course of those responses. We conclude that these two Vitis vinifera cultivars do indeed differ significantly in the way that they respond to potentially stressful atmospheric conditions, and that ABA physiology is a key process in these contrasting responses. An understanding of such mechanisms, including the relative importance of roots and shoots in determining vine response to abiotic stress, is highly relevant to irrigation scheduling, and to management of associated variation in vineyard productivity across diverse environments.
Subfields: Food Science, Global and Planetary Change, Plant Science
View Paper: https://www.semanticscholar.org/paper/c0361adbc50dfa235445dcf191d35c9fd4832129
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Citations in the corpus
- The relationship between the expression of abscisic acid biosynthesis genes, accumulation of abscisic acid and the promotion of Vitis vinifera L. berry ripening by abscisic acid. (2009, methodology): “As an alternative to the ethyl acetate extraction, 100–200 mg samples of homogenised frozen berries were column purified (Soar et al. 2006).”
- Grapevine under deficit irrigation: hints from physiological and molecular data. (2010, background): “The same contrasting behaviour between ‘Grenache’ and ‘Syrah’ in response to atmospheric moisture stress was found by Soar et al. (2006), who attributed the higher sensitivity of stomata in ‘Grenache’ to the higher concentration of ABA in the xylem sap as compared with ‘Syrah’.”
- Improving water use efficiency in grapevines: potential physiological targets for biotechnological improvement. (2010, background): “Soar, C.J., Speirs, J., Maffei, S.M., Penrose, A.B., McCarthy, M.G. and Loveys, B.R. (2006) Grape vine varieties Shiraz and Grenache differ in their stomatal response to VPD: apparent links with ABA physiology and gene expression in leaf tissue.”
- Comprehending crystalline β-carotene accumulation by comparing engineered cell models and the natural carotenoid-rich system of citrus (2011, unknown): “, 2012), high VPD (Tardieu and Davies, 1992; Soar et al., 2006), and declining Ψ (Behl and Hartung, 1984; Tardieu and Davies, 1993)].”
- Drought-induced changes in development and function of grapevine (Vitis spp.) organs and in their hydraulic and non-hydraulic interactions at the whole-plant level: a physiological and molecular update (2010, background): “The observations of Soar et al. (2004, 2006), although not conducted on water stressed plants, suggest that this may also be the case in grapevines.”
- Grapevine adaptations to water stress: new perspectives about soil/plant interactions (2016, background): “In grapevine, the importance of ABA synthesis in roots in response to decreasing Wsoil was recently shown by Speirs et al. (2013).”