Reductions in biomass accumulation, photosynthesis in situ and net carbon balance are the costs of protecting Vitis vinifera ‘Semillon’ grapevines from heat stress with shade covering

Greer, Dennis H.; Weedon, Michael N.; Weston, Christopher

doi:10.1093/aobpla/plr023

Cited by 48 publications

(38 citation statements)

References 36 publications

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“…Although plants were grown at relatively low light intensities, overall photosynthesis rates were more similar to those measured in sun‐type leaves than in shade leaves (Greer et al . ), and the differential response of the two varieties was put in evidence by other photosynthetic parameters (Figs and ). On SAR Amax and g s were not significantly different in both varieties (Fig.…”

Section: Resultsmentioning

confidence: 81%

Heat stress in grapevine: the pros and cons of acclimation

Carvalho

Coito

Colaço

et al. 2014

Plant Cell & Environment

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Heat stress is a major limiting factor of grapevine production and quality. Acclimation and recovery are essential to ensure plant survival, and the recovery mechanisms can be independent of the heat response mechanisms. An experimental set up with and without acclimation to heat followed by recovery [stepwise acclimation and recovery (SAR) and stepwise recovery (SR), respectively] was applied to two grapevine varieties, Touriga Nacional (TN), and Trincadeira (TR), with different tolerance to abiotic stress. Major differences were found between leaves of SAR and SR, especially after recovery; in SAR, almost all parameters returned to basal levels while in SR they remained altered. Acclimation led to a swifter and short-term antioxidative response, affecting the plant to a lesser extent than SR. Significant differences were found among varieties: upon stress, TN significantly increased ascorbate and glutathione reduction levels, boosting the cell's redox-buffering capacity, while TR needed to synthesize both metabolites, its response being insufficient to keep the redox state at working levels. TR was affected by stress for a longer period and the up-regulation pattern of antioxidative stress genes was more obvious. In TN, heat shock proteins were significantly induced, but the canonical heat-stress gene signature was not evident probably because no shutdown of the housekeeping metabolism was needed.

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Section: Resultsmentioning

confidence: 81%

Heat stress in grapevine: the pros and cons of acclimation

Carvalho

Coito

Colaço

et al. 2014

Plant Cell & Environment

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“…Heat waves occurring during key berry development stages can have devastating impacts on production even in case of overall favorable weather conditions for the rest of the season. It is well documented that heat stress (HS; Tmax >35°C) during berry ripening is associated with inhibition of photosynthesis and thus lower sugar accumulation and yield (Greer and Weston , Greer et al ). This is due to the decrease of berry size while the overall lower quality is a result of inhibition of color and flavor development (Greer and Weedon ).…”

Section: Abiotic Stress In the Field: Learning To Adjust To Climate Cmentioning

confidence: 99%

Cutting the Gordian Knot of abiotic stress in grapevine: From the test tube to climate change adaptation

Carvalho

Amâncio

2018

Physiologia Plantarum

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In Mediterranean climate areas, the available scenarios for climate change suggest an increase in the frequency of heat waves and severe drought in summer. Grapevine (Vitis vinifera L.) is a traditional Mediterranean species and is the most valuable fruit crop in the world. Currently, viticulture must adjust to impending climate changes that are already pushing vine‐growers toward the use of irrigation, with the concomitant losses in wine quality, and researchers to study tolerance to stress in existing genotypes. The viticulture and winemaking worlds are in demand to understand the physiological potential of the available genotypes to respond to climate changes. In this review, we will focus on the cross‐talk between common abiotic stresses that currently affect grapevine productivity and that are prone to affect it deeper in the future. We will discuss results obtained under three experimental stress conditions and that call for specific responses: (1) acclimatization of in vitro plantlets, (2) stress combinations in controlled conditions for research purposes, (3) extreme events in the field that, driven by climate changes, are pushing Mediterranean species to the limit. The different levels of tolerance to stress put in evidence by the plasticity of phenotypic and genotypic response mechanisms, will be addressed. This information is relevant to understand varietal adaptation to impending climate changes and to assist vine growers in choosing genotypes and viticulture practices.

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“…Shading materials, either natural (e.g. olive trees) or artificial, can help overcome this shortcoming (Greer et al, 2011;Shahak et al, 2008). Furthermore, the use of chemical sunscreens for leaf protection against sunburns may also represent an important alternative (Dinis et al, 2016).…”

Section: Short-term Adaptation Measuresmentioning

confidence: 99%

Viticulture in Portugal: A review of recent trends and climate change projections

et al. 2017

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Aim:The winemaking sector in Portugal is of major socio-economic relevance, significantly contributing to the national exports and sustaining many wine-related activities, including oenotourism. Portuguese viticultural regions present a wide range of edaphoclimatic conditions with remarkable regional specificities, thus contributing to the individuality of their wines. Owing to the strong influence of climate and weather factors on grapevines, climate change may drive significant impacts on Portuguese viticulture. Methods and results:Climatic projections for the next decades in Portugal highlight an overall warming and drying trend of the grapevine growing season, potentially resulting in modifications in phenology, growth, development, yields and eventually wine characteristics and typicity. Furthermore, the current viticultural suitability of each region is projected to undergo significant changes, suggesting a reshaping of the optimal conditions for viticulture throughout the country. In order to sustain high quality levels and affordable yield regularity, cost-effective, appropriate and timely adaptation measures must be implemented by the sector. Conclusion:The most recent scientific studies covering the potential impacts of climate change on Portuguese viticulture are herein presented.Significance and impact of the study: Possible adaptation measures against these threats are also discussed, foreseeing their integration into decision support systems by stakeholders and decision-makers.

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Reductions in biomass accumulation, photosynthesis in situ and net carbon balance are the costs of protecting Vitis vinifera ‘Semillon’ grapevines from heat stress with shade covering

Cited by 48 publications

References 36 publications

Heat stress in grapevine: the pros and cons of acclimation

Heat stress in grapevine: the pros and cons of acclimation

Cutting the Gordian Knot of abiotic stress in grapevine: From the test tube to climate change adaptation

Viticulture in Portugal: A review of recent trends and climate change projections

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