terclim by ICS banner
IVES 9 IVES Conference Series 9 Unravel the underlying mechanisms of delaying ripening techniques in grapevine

Unravel the underlying mechanisms of delaying ripening techniques in grapevine

Abstract

In a scenario of changing climate conditions, grapevine is significantly affected at multiple levels. Advancements in phenology and berry ripening, however, are the major dynamics of the generalized increase in average temperature and evaporative demand, negatively affecting berry quality and productivity. The aim of this work was to unravel the underlying mechanisms of bunch-zone auxin application (NAA; 1-Naphthaleneacetic acid) and source-limiting canopy management approaches in delaying berry ripening. In randomized block design experiments, control vines were compared to vines treated with NAA, subjected to apical-to-bunch defoliation or antitranspirant application (n=10-to-42 plants per treatment). Juice chemical analysis, berry ripening kinetics and physiological traits were monitored every week from pre-veraison over multiple vineyards, years (2021, 2022, 2023) and varieties (Chardonnay, Pinot gris, Syrah, Merlot). Overall, all the treatments delayed berry ripening, and in particular °Brix build up, by 7 to up 15 days. Opposite trends were observed for total acidity, particularly malic acid concentration that displayed a slower degradation kinetic post-veraison. Time course expression profile of ripening-associated transcription factors revealed a significant and consistent repression for VviNAC60, VviNAC33, VviBHLH75, VviWRKY19, VviERF45 following the application of delaying ripening techniques. Similarly, abscisic acid and Indole-3-acetic acid concentration in the berry were modulated by treatments, with specific variation for their free and conjugated forms. This work enlightens, for the first time, the mechanistic framework of berry ripening dynamics following specific treatments with different mechanisms of action and provides novel avenues to harmonize management approaches in grapevine in the context of climate change.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Michele Faralli1,2*, Oscar Bellon3, Sara Zenoni3, Massimo Bertamini1,2, Domenico Masuero2, Urska Vrhovsek2, Stefania Pilati2, Claudio Moser2

1 Center Agriculture Food Environment (C3A), University of Trento, 38098, San Michele all’Adige, Italy
2 Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
3 Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy

Contact the author*

Keywords

Delaying ripening, Climate change, Auxin, Juice quality, transcription factors

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Development of a new lab-scale carbonation method for applications to sparkling wines

Carbon dioxide (CO2) is the gaseous species responsible for the sparkle in all sparkling wines, influencing their
visual appearance, aromas and mouthfeel.

Read More

From protein-centered to gene-centered approaches to investigate DNA-protein interactions in grapevine

DNA-binding proteins play a pivotal role in critical cellular processes such as DNA replication, transcription, recombination, repair, and other essential activities. Consequently, investigating the interactions between DNA and proteins is of paramount importance to gain insights into these fundamental cellular mechanisms. Several methodologies have been devised to uncover DNA-protein interactions, which can be broadly categorized into two approaches. The “protein-centered” approach focuses on identifying the DNA sequences bound by a specific transcription factor or a set of TFs. Techniques falling within this category include chromatin immunoprecipitation, and protein-binding microarrays.

Read More

Uve e vini in vulcaniti basiche anorogeniche dei lessini meridionali, impronta petrochimica e assimilazione di metalli pesanti

Nel 2009 sono stati prelevati e analizzati mediante XRF (X-ray fluorescence) campioni di suolo, in vigneti sperimentali siti nelle province di Vicenza e di Ancona. Sono stati inoltre determinati in 2 campioni di mosto e 2 di vino delle varietà Verdicchio e Refosco dal peduncolo rosso, ed in 2 di uva Refosco dal peduncolo rosso, gli elementi in traccia mediante ICP-MS (Inductively coupled plasma-mass spectrometry).

Read More

Différenciation mésoclimatique des terroirs alsaciens et relation avec les paramètres du milieu naturel

The influence of climatic conditions on the development of the vine and on the quality of the wines no longer needs to be demonstrated at the scale of the vineyard, by the regional climatic characteristics, determining on this scale the viticultural potentialities (Huglin, 1978; Branas, 1946; Riou et al ., 1994); but also on a local scale, at the level of the basic terroir unit (Morlat, 1989), by the landscape differentiation of the natural environment inducing climatic variability within the same vineyard, and partly explaining differences in functioning of the vine, in connection with the processes of maturation and the quality of the wine (Becker, 1977 and 1984; Morlat, 1989 and Lebon, 1993a). According to these authors, the climatic diversity in a wine region constitutes in addition to the edaphic component, an important component of characterization of the Basic Terroir Units (UTB).

Read More

Evaluation of vineyards, fruit and wine affected by wild fire smoke

Wineries may randomly reject fruit from vineyards near wild fires exposed to smoke. It is difficult to determine if fruit has been compromised in quality when exposed to smoke

Read More