terclim by ICS banner
IVES 9 IVES Conference Series 9 Freeze-thaw temperature oscillations promote increased differential gene expression during grapevine bud dormancy

Freeze-thaw temperature oscillations promote increased differential gene expression during grapevine bud dormancy

Abstract

In northern cold climate conditions, chilling requirement fulfillment in dormant grapevine buds is slowed or stopped by subzero temperatures impacting the transcriptional processes needed to complete chilling requirement. Cabernet Franc and Reisling in Geneva, NY were used to determine the impact of natural oscillating temperatures on grapevine bud transcriptional activity during light and dark periods of a two-week period in January with fluctuating diurnal winter temperatures. Cabernet Franc and Reisling bud samples were collected at 32 time points during the natural vineyard temperature cycle at 6:00 (dark), 14:00 (light) and 18:00 (dark) hours) to monitor gene expression in consecutive freezing and non-freezing temperature oscillations. Genotype, light and dark, and temperature oscillations conditions were explored. Four distinct conditions were analyzed 1) genotype difference with constant light/dark temperature conditions; 2) light vs dark with similar temperature conditions; 3) buds in light (14:00) at >0C vs <0C; 4) buds in dark (6:00 or 18:00) at >0C vs <0C; 4). Principal components analysis indicated that genotype accounted for 66% of variance and there were 1,916 and 1,559 differentially expressed genes (DEG) up and down regulated respectively, in Reisling relative to Cabernet Franc. A greater number of DEG were identified for light relative to dark samples (14:00 vs 6:00 or 18:00) and samples collected at temperatures >0C vs <0C. Gene pathway analysis showed significant positive enrichment in hormone signaling and secondary metabolite pathways in both genotypes in the >0C relative <0C temperature conditions indicating transient temperature changes enhance the metabolic activity of dormant buds.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Prakriti Sharma1, Jason P. Londo2, Anne Fennell1

1 South Dakota State University, Brookings, SD, USA
2 Cornell University, Geneva, NY, USA

Contact the author*

Keywords

bud dormancy, freeze, chilling fulfilment

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

What drives Indications of Geographical Origin protection and governance mechanisms in the U.S. and European contexts? A contribution of the social sciences

There are fundamentally two different ways in which indications of geographical origin (igos) can be protected. The us approach favors the pre-existing trademark system through collective marks (cms), while the eu approach favors a maximalist approach via a sui generis system which promotes appellations of origin (aos). A consensus however emerges regarding the fundamental protection of origin against misleading, confusing and dilutive uses. Previous literature discusses these competing igo logics from historical, legal and international trade perspectives. In this paper, we depart from the field of social sciences, in particular from recent advancements in the well-established literature on proximities, in order to provide a reflection on the different logics underpinning the aos and cms systems.

Perceptive interactions and wine typical fruity aroma 

In this study we developed a methodology to prepare aromatic reconstitutions from fractions of a wine organic extract and we assessed these reconstitutions both in wine model solution and in de- aromatized wine.

The suitability for viticulture at varying altitudes: a study of grapevine ripening in the Italian Alps

Planting vineyards in cooler climates has been used over recent years as
a strategy to counter the climatic shifts caused by climate change. A move towards higher altitudes in hilly and mountainous wine regions may provide a solution to deleterious effects that increased ambient temperatures have on wine quality. Until now, the influences of higher altitudes and their climates, as well as their effect on vine growing cycles, still holds a lot of scientific uncertainty. The transnational EU-funded project REBECKA (Interreg V-A IT-AT: ITAT1002, duration: 2017-2019) has the objective to develop a regional valuation method to rate the suitability for viticulture in South Tyrol (Italy) and Carinthia (Austria). Preliminary surveys were performed regarding the effects of altitude on ripening performance of the cultivar Pinot Noir.

Gevrey-Chambertin : les enjeux d’un territoire vitivinicole locale à l’échelle mondiale

An emblematic name of the burgundy wine region, a few kilometers from dijon, gevrey-chambertin stands out as a small wine town of international renown in the heart of a prestigious red wine vineyard listed as a unesco world heritage site.

Effect of ozone treatments in wine production of young and short-term aged white wines: destructive and non-destructive evaluation of main quality attributes

The main aim of WiSSaTech project (PRIN P2022LXY3A), supported by Italian Ministero dell’Università e della Ricerca and NextGenerationEU program, is to investigate eco-friendly and safe alternatives to sulphur dioxide (SO2) in wine production.