terclim by ICS banner
IVES 9 IVES Conference Series 9 Genome wide association mapping of phenology related traits in Vitis vinifera L

Genome wide association mapping of phenology related traits in Vitis vinifera L

Abstract

Climate change, with rise in temperatures, is leading to an advance in the dates of phenological stages, with a loss in quality of the grape final product. Therefore, the understanding of the genetic determinants driving the phenological stages of flowering, veraison and the interval between them, represents a target for the development of grapevine’s cultivar adapted to the changing environment.
Here we conducted a GWA study to identify SNPs significantly associated to flowering time, veraison time and to the interval among them. A germplasm collection (CREA-VE in Susegana, Treviso, Italy) including 649 grapevine’s cultivar representing 365 unique genotypes was considered. Cultivars were phenotyped for flowering time and veraison time along 11 years. Flowering-veraison intervals were also derived and distribution for all traits was inspected and eventually corrected. For this analysis we have built a genetic dataset including 6679 SNPs. SNPs were either recovered from litterature or integrated by genotyping through grapevine Illumina SNPChip 18K and used for evaluating the genetic structure. MLM analysis conducted independently for the three different phenological traits identified a list of few significantly associated SNPs. Among the three traits flowering time yielded the highest number of associated SNPs. For each trait SNPs consistently associated across more years were found. Moreover partially overlapping SNPs associated both to veraison time and flowering-veraison time interval were found. Interestingly most of the associated SNPs co-localized with QTL regions already known either for flowering or veraison traits in grapevine. Putative candidate genes underlying such regions are discussed.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Giada Bolognesi1, Pietro Delfino1, Chiara Broccanello1, Riccardo Mora1, Martina Marini1, 2, Massimo Gardiman2, Mirella Giust2, Diego Tomasi2, Manna Crespan2, Diana Bellin1*

1Department of Biotechnology, University of Verona, Verona, Italy
2 CREA Research Centre for Viticulture and Enology, Conegliano (TV), Italy

Contact the author*

Keywords

Climate change, GWAS, phenology, candidate genes

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Evaluation of interception traps for capture of Xylotrechus arvicola (Coleoptera: Cerambycidae) in vineyards varieties from Protected Denomination of Origin León

Xylotrechus arvicola (Coleoptera: Cerambycidae) is a pest in vineyards (Vitis vinifera) in the main Spain wine-producing regions with Protected Denomination of Origin (PDO). The action of the larvae, associated to the spreading of wood fungi, causes damage especially in important varieties of V. vinifera. X. arvicola females lay eggs concentrated in cracks or under the rhytidome in the wood vines, which allows the emerging larvae to get into the wood and make galleries inside the plant being then necessary to prune intensively or to pull up the bored plants (1). The objective of the study was to evaluate captures of X. arvicola insects in five varieties of V. vinifera in PDO León.

Read More

Long-term sensorial and compositional effects of copper fining on the wine containing ‘reductive’ and ‘tropical’ volatile sulfur compounds

The aim of this study was to investigate long-term sensorial and compositional effects of copper addition to the white wine naturally high in varietal thiol levels, with added volatile sulfur compounds

Read More

THE EFFECT OF BENTONITE FINING ON THE VOLATILE AND NON-VOLATILE PROFILE OF ITALIAN WHITE WINES

Marselan wines have an unusual high proportion of seed derived tannins from grapes having high proportions of skins, which are rich in tannins. But the causes behind this characteristic have not yet been identified. In vintage 2023 wines were made at experimental scale (9 kg by experimental unit) from Arinarnoa, Marselan and Tannat Vitis vinifera grape cultivars by traditional maceration, and by techniques aimed to increase the wine content in skin derived tannin: addition of extraction enzymes, addition at vatting of grape-skin enological tannins, or by extended maceration, known to increase the seed derived tannin contents of wines. Macerations were of 7 days, except in the extended macerations that were of 15 days.

Read More

Influence Of Phytosterols And Ergosterol On Wine Alcoholic Fermentation For Saccharomyces Cerevisiae Strains

Sterols are a fraction of the eukaryotic lipidome that is essential for the maintenance of the cell membrane integrity and their good functionality. During alcoholic fermentation, they ensure yeast growth, metabolism and viability, as well as resistance to osmotic stress and ethanol inhibition. Two sterol sources can support yeasts to adapt to fermentation stress conditions: ergosterol, produced by yeast in aerobic conditions, and phytosterols, plant sterols found in grape musts imported by yeasts in anaerobiosis. Little is known about the physiological impact of the assimilation of phytosterols in comparison to ergosterol and the influence of sterol type on fermentation kinetics parameters.

Read More

How climate change can modify the flavor of red Merlot and Cabernet-Sauvignon

he main goal of this research was to identify key aroma compounds linked with the maturity of grapes (ripe and overripe) and involved in grapes and wines with an intense dried fruits aroma. Odoriferous zones reminiscent of these aromas were detected by gas chromatography coupled with olfactometry (GC-O).

Read More