terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Effects of progeny in the modulation of the response to water stress in isohydric and anisohydric varieties

Effects of progeny in the modulation of the response to water stress in isohydric and anisohydric varieties

Abstract

Each grapevine variety has a specific water use regulation response under drought, and it is still unclear whether this regulation results from innate genotypic behavior (iso- and anisohydric), or is a response to environmental factors, namely recurrent water stress priming effects. In the present work, we explored the influence of the field-grown genotypes’ drought memory in the drought-response phenotype of their vegetative progenies, in Trincadeira (isohydric) and Castelão (anisohydric) varieties under a drought event followed by recovery in a glasshouse. Cuttings from both cultivars subjected to full irrigation (FI) and non-irrigation (NI) treatments for 5 consecutive years were used. Progenies were subjected to two irrigation treatments, well-watered (WW), where the soil was kept at field capacity, and water-stress (WS), where irrigation was withheld for 7 days. WS plants were then re-watered and kept at field capacity for 72h. Measurements and sampling were done in both progenies of both treatments, at 0h, 72h and 168h after the beginning of the treatment and after 24h and 72h of recovery. NI progenies from both cultivars had improved gas exchange parameters, better total plant hydraulic conductance under drought, and faster recovery than FI progenies. Nocturnal and diurnal transpiration were affected both by progeny and treatment. Leaf wax content was significantly enhanced by WS in both progenies, but it was higher in NI progenies. Stomatal conductance kinetic showed differences in the timing of stomatal aperture between progenies, in particular after water recovery. Leaf temperature (Tc) was similar in both varieties and progenies, but higher temperatures were measured under WS. Leaf temperature only recovered 72h after re-watering. Although isohydric and anisohydric genotypes exhibited different drought acclimation responses due to their inner genetic behavior, their underlying hydraulic, stomatal and photosynthetic regulatory mechanisms were also affected by historical origin. In this presentation, fundamental insights about potential priming mechanisms in grapevine will be further discussed.

DOI:

Publication date: October 5, 2023

Issue: ICGWS 2023

Type: Article

Authors

Olfa Zarrouk1,2†, João de Deus3*, Miguel Damasio3*, Ana Rodrigues4, José Silvestre3, Luisa Carvalho1†

1LEAF – Linking Landscape, Environment, Agriculture and Food Research Centre, Associate Laboratory TERRA, ISA-ULisboa, Lisboa, Portugal
2SFCoLAB – Laboratório Colaborativo para a Inovação Digital na Agricultura, Torres Vedras, Portugal
3INIAV – Instituto Nacional de Investigação Agrária e Veterinária, I.P., Oeiras, Portugal
4CEF – Centro de Estudos Florestais, Associate Laboratory TERRA, ISA-ULisboa, Lisboa, Portugal

Contact the author*

;

Keywords

thermal imaging, hydraulic conductance, stomatal conductance, transpiration

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Impact of climate on berry weight dynamics of a wide range of Vitis vinifera cultivars 

In order to study the impact of climate change on Bordeaux grape varieties and to assess the behavior of candidate grape varieties potentially better adapted to the new climatic conditions, an experimental vineyard composed of 52 grape varieties was planted in 2009 at the INRAE Bordeaux Aquitaine center[1]. Among the many parameters studied since 2012, berry weight for each variety was measured weekly from mid-veraison to maturity, with four independent replicates. The kinetics obtained allowed to study berry growth, a key parameter in grape composition and yield.

Read More

Unveiling a hidden link: does time hold the key to altered spectral signatures of grapevines under drought?

Remote sensing technology captures spectral data beyond the visible range, making it useful for monitoring plant stress. Vis-NIR (Visible-Near Infrared) spectroscopy (400-1000 nm) is commonly used to indirectly assess plant status during drought. One example is the widespread use of normalized difference vegetation index (NDVI) that is strongly linked to green biomass. However, a knowledge gap exists regarding the applicability of this method to all the drought conditions and if it is a direct correlation to the water status of the plant.

Read More

Influence of irrigation frequency on berry phenolic composition of red grape varieties cultivated in four spanish wine-growing regions

The global warming phenomenon involves the frequency of extreme meteorological events accompanied by a change in rainfall distribution. Irrigation frequency (IF) affects the spatial and temporal soil water distribution but its effects on the phenolic composition of the grape have been scarcely studied. The aim of this work was to evaluate the effects of four deficit irrigation frequencies of 30 % ETo: one irrigation per day (T01), two irrigations per week (T03), one irrigation per week (T07) and one irrigation every two weeks (T15) on berry phenolic composition at harvest.

Read More

High-throughput screening of physical-mechanical berry skin traits facilitates targeted selection of breeding material with resistance to Botrytis bunch rot and grape sunburn

The ongoing climate change implies an increasing mean air temperature, which is signified by weather extremes or sudden changes between drought and local heavy rainfalls. These changing conditions are especially challenging for the established grapevine varieties growing under cool climate conditions due to an increased risk for fungal diseases like downy mildew (DM) and Botrytis bunch rot (BBR) as well as for grape sunburn. To meet that demand, the scope of most grapevine breeding programs is the selection of mildew fungus-resistant and climatic adapted grapevines with balanced, healthy yield and outstanding wine quality.

Read More

Under-vine management effects on grapevine vegetative growth, gas exchange and rhizosphere microbial diversity

The use of cover crops under the vines might be an alternative to the use of herbicides or tillage, improving grapevine quality and soil characteristics. The aim of this research was to study the implications of different management strategies of the soil under the vines (herbicide, cultivation or cover crops) on grapevine growth, water and nutritional status, gas exchange parameters and belowground microbial communities.
The experimental design consisted in 4 treatments applied on 35L-potted Tempranillo vegetative grapevines with 10 replicates each grown in an open-top greenhouse in 2022 and 2023. Treatments included two cover crop species (Trifolium fragiferum and Bromus repens), herbicide (glyphosate al 36%) and an untreated control.

Read More