Understanding kaolin effects on grapevine leaf and whole-canopy physiology during water stress and re-watering

Frioni, Tommaso; Saracino, S; Squeri, Cecilia; Tombesi, Sergio; Palliotti, Alberto; Sabbatini, Paolo; Magnanini, E.; Poni, Stefano

doi:10.1016/j.jplph.2019.153020

Cited by 36 publications

(37 citation statements)

References 48 publications

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“…The experiment was carried out in 2018 in an outdoor area in Piacenza (44°55′ N, 9°44′ E), Italy, close to the Agriculture faculty, on 6 five-year-old cultivar Sangiovese ( Vitis vinifera L.) vines (clone R10, grafted on SO4 rootstock) grown in 55l pots. The set of plants was similar to that used in Frioni et al [ 15 ]. In this experiment, six vines were arranged along a single row having a 35° NE-SW orientation.…”

Section: Methodsmentioning

confidence: 99%

“…For the dry-down setup, the same protocol described in Frioni et al [ 15 ] was used. All the vines were kept well watered until DOY 208 (27 July, phenological stage BBCH77 according to Lorenz et al [ 36 ]) by supplying a daily amount of 3600 ± 424 ml per vine, representing 110% actual canopy transpiration (E) concurrently measured by the whole-canopy system described hereafter over DOY 200–207.…”

Section: Methodsmentioning

confidence: 99%

“…Whole-canopy net CO 2 exchange rate/leaf area (NCER/LA) measurements were taken using the multi-chamber system reported in Poni et al [ 37 ] with the configuration described in Frioni et al [ 15 ]. To warrant unbiased comparison vs. canopy development, leaf area (LA) per vine was estimated as described in Gatti et al [ 38 ] and NCER/LA (μmol CO 2 /m 2 s) computed accordingly.…”

Section: Methodsmentioning

confidence: 99%

“…Kaolin (aluminium silicate) is a natural clay used for mitigating the negative impact of extreme temperatures on leaves and fruits [ 7 , 8 , 9 ]. Under non-limiting conditions, mild or no effects on assimilation and transpiration have been reported [ 10 , 11 , 12 , 13 , 14 , 15 ]. Under water shortage, kaolin is able to maintain better assimilation and transpiration rates, to avoid photosystem II efficiency loss and to prevent leaf photoinhibition and abscission [ 9 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…Under non-limiting conditions, mild or no effects on assimilation and transpiration have been reported [ 10 , 11 , 12 , 13 , 14 , 15 ]. Under water shortage, kaolin is able to maintain better assimilation and transpiration rates, to avoid photosystem II efficiency loss and to prevent leaf photoinhibition and abscission [ 9 , 12 , 13 , 14 , 15 ]. Its mechanism of action is primarily related to the increase of light reflection that reduces the radiation absorbed by the leaf [ 7 , 8 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

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Kaolin Reduces ABA Biosynthesis through the Inhibition of Neoxanthin Synthesis in Grapevines under Water Deficit

Frioni

Tombesi

Sabbatini

et al. 2020

IJMS

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In many viticulture regions, multiple summer stresses are occurring with increased frequency and severity because of warming trends. Kaolin-based particle film technology is a technique that can mitigate the negative effects of intense and/or prolonged drought on grapevine physiology. Although a primary mechanism of action of kaolin is the increase of radiation reflection, some indirect effects are the protection of canopy functionality and faster stress recovery by abscisic acid (ABA) regulation. The physiological mechanism underlying the kaolin regulation of canopy functionality under water deficit is still poorly understood. In a dry-down experiment carried out on grapevines, at the peak of stress and when control vines zeroed whole-canopy net CO2 exchange rates/leaf area (NCER/LA), kaolin-treated vines maintained positive NCER/LA (~2 µmol m−2 s−1) and canopy transpiration (E) (0.57 µmol m−2 s−1). Kaolin-coated leaves had a higher violaxanthin (Vx) + antheraxanthin (Ax) + zeaxanthin (Zx) pool and a significantly lower neoxanthin (Nx) content (VAZ) when water deficit became severe. At the peak of water shortage, leaf ABA suddenly increased by 4-fold in control vines, whereas in kaolin-coated leaves the variation of ABA content was limited. Overall, kaolin prevented the biosynthesis of ABA by avoiding the deviation of the VAZ epoxidation/de-epoxidation cycle into the ABA precursor (i.e., Nx) biosynthetic direction. The preservation of the active VAZ cycle and transpiration led to an improved dissipation of exceeding electrons, explaining the higher resilience of canopy functionality expressed by canopies sprayed by kaolin. These results point out the interaction of kaolin with the regulation of the VAZ cycle and the active mechanism of stomatal conductance regulation.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kaolin Reduces ABA Biosynthesis through the Inhibition of Neoxanthin Synthesis in Grapevines under Water Deficit

Frioni

Tombesi

Sabbatini

et al. 2020

IJMS

Self Cite

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Uncovering the effects of kaolin on balancing berry phytohormones and quality attributes of Vitis vinifera grown in warm‐temperate climate regions

et al. 2021

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BACKGROUND The application of kaolin particle film is considered a short‐term strategy against several environmental stresses in areas with a Mediterranean‐like climate. However, it is known that temperature fluctuations and water availability over the season can jeopardize kaolin efficiency in many Mediterranean crops. Hence, this study aims to evaluate the effects of kaolin foliar application on berry phytohormones, antioxidant defence, and oenological parameters at veraison and harvest stages of Touriga‐Franca (TF) and Touriga‐Nacional (TN) grapevines in two growing seasons (2017 and 2018). The 2017 growing season was considered the driest (−147.1 dryness index) and the warmest (2705 °C growing degree days) of the study. RESULTS In 2017, TF kaolin‐treated berries showed lower salicylic acid (−26.6% compared with unsprayed vines) and abscisic acid (ABA) (−10.5%) accumulation at veraison, whereas salicylic acid increased up to 28.8% at harvest. In a less hot season, TN and TF kaolin‐treated grapevines showed a twofold in ABA content and a threefold increase in the indole‐3‐acetic acid content at veraison and lower ABA levels (83.8%) compared with unsprayed vines at harvest. Treated berries showed a decreased sugar content, without compromising malic and tartaric acid levels, and reactive oxygen species accumulation throughout berry ripening. CONCLUSION The results suggest kaolin exerts a delaying effect in triggering ripening‐related processes under severe summer stress conditions. Treated berries responded with improved antioxidant defence and phytohormone balance, showing significant interactions between kaolin treatment, variety, and developmental stage in both assessed years. © 2021 Society of Chemical Industry.

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Particle Film to Mitigate the Negative Effects of Climate Change on Grapevine Leaf Eco-Physiology as Mediated by Anatomical Traits

De Micco,

Petracca,

Cirillo

et al. 2024

Progress in Botany

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Understanding kaolin effects on grapevine leaf and whole-canopy physiology during water stress and re-watering

Cited by 36 publications

References 48 publications

Kaolin Reduces ABA Biosynthesis through the Inhibition of Neoxanthin Synthesis in Grapevines under Water Deficit

Kaolin Reduces ABA Biosynthesis through the Inhibition of Neoxanthin Synthesis in Grapevines under Water Deficit

Uncovering the effects of kaolin on balancing berry phytohormones and quality attributes of Vitis vinifera grown in warm‐temperate climate regions

Particle Film to Mitigate the Negative Effects of Climate Change on Grapevine Leaf Eco-Physiology as Mediated by Anatomical Traits

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