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.

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…

Identification of γ-nonalactone precusor in Merlot and Cabernet-Sauvignon grapes

Wine flavor results on complexes interactions of odorous components, which come from different aromatic families like esters, thiols, aldehydes, pyrazines or lactones.

Smart microgrid: how to reduce costs and CO2 emissions in wineries and vineyards

The wine sector is greatly threatened by climate change, but is also one of its contributors.

Influence of climate change conditions (elevated CO2 and temperature) on the grape composition of five tempranillo (Vitis vinifera L.) Somatic variants

The current levels of greenhouse gas emissions are expecting to provoke a change on the environmental conditions which, among others, will include a rise of global mean surface temperature and an increment of atmospheric CO2 levels (IPCC, 2014), known as climate change. The response of grapevine (Vitis vinifera L.), one of the most important crops in Europe, from both a cultural and economic point of view, is not completely understood yet and the studies considering the interaction between factors are scarce. Besides, the potential variety of responses among somatic variants needs to be studied in order to be exploited in the avoidance of undesired traits linked to climate change (Carbonell‐Bejerano et al., 2015).

Do natural wines differ from conventionally-produced wines?

In recent years, consumer awareness for consuming healthy and environmental sustainability products has considerably increased [1]. In an ever-changing and highly competitive environment such as the wine sector, production of wines without sulfites, or biodynamic, organic or vegan wines, has experienced an important increase to meet the new needs of consumers [2,3]. Beyond these categories of regulated products, a new concept has emerged: natural wines (NW), for which there is not an established definition or legal regulation. Rather, producers have a personal idea of naturalness under the premise of applying minimal intervention from grape to wine production [4]. In this context, it is hypothesized that self-defined natural wines are different from conventional wines (CW) in their sensory and chemical profile. The predicament of natural wine is based on anecdotic declarations and assumes that minimal intervention guarantees the production of wines with organoleptic properties able to express the “terroir” and thus promote wine diversity, plurality and sensory typicity against the risk of standardization of CW.

Towards an ecological architecture inspired by underground cellars: An example of the thermal inertia of Moldovan underground cellars and new geothermal and Canadian well approaches

The search for underground shelters is one of the oldest forms of human habitation, providing refuge in extreme environments such as deserts and polar regions.