terclim by ICS banner
IVES 9 IVES Conference Series 9 The grapevine single-berry clock, practical tools and outcomes 

The grapevine single-berry clock, practical tools and outcomes 

Abstract

The dynamic sequence of physiological events along the three-months of berry development from anthesis to ripe stage has been thoroughly investigated. Most studies were performed on average samples, taking care to crush enough fruits to fairly represent the overall trend of the future harvest. However, phenological stages like 30% caps off (EL25) highlights the asynchronous nature of this population. Consequently, softening, onset of sugar accumulation and coloration were melted by asynchrony in a developmental mumbo jumbo, until their respective timing could be clarified by single berries approaches. To alleviate any statistical bias from pooling unsynchronized fruits, we have gathered a set of approaches on single berries, including non-destructive analysis of time-lapse images, Near InfraRed Spectrometry, basic phenotyping, transcriptomics and metabolomics. In this pertinent reference system, the sugar and acid pathways noticeably accelerated and metabolic transitions were sharpened. Transcripts encoding membrane transporters abruptly switched on during either growth phases were identified, enlightening the special design and bioenergetics of the phloem unloading and vacuolar accumulation pathways, in full quantitative agreement with our new appraisal of the sugar/acidity ratio. Single berries did not depart from strict developmental paths on PCAs from transcriptomic or metabolomic data. It led to the identification of a very small set of genes differentially expressed between clones, without interfering with developmentally regulated ones. This study shows that single berry omics alleviates random noise and temporal ambiguities inherent to mixed fruits, thereby improving the accuracy of the molecular clocks to just a few days. 

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Article

Authors

Mengyao Shi1, Flora Tavernier1, Victoria Lesbats-Sichel1, Stefania Savoi2, Benoit Daviet3, Maxence Cafier3 , Philippe Hugueney4, Raymonde Baltenweck4, Christian Fournier3, Vincent Segura1,5, Laurent Torregrosa3*, and Charles Romieu1*, 5

1 UMR AGAP Institute, Montpellier University, CIRAD, INRAe, Institut Agro-Montpellier, 34398 Montpellier, France
2 Department of Agricultural, Forest and Food Sciences, Università di Torino (UniTO), 10095 Grugliasco, Italy
3 UMR LEPSE, Montpellier University, CIRAD, INRAe, Institut Agro-Montpellier, 34060 Montpellier, France
4 UMR SVQV, INRAe-Colmar, 68000 Colmar, France
5 UMT Geno-Vigne, IFV-INRAe-Institut Agro Montpeller, 34398 Montpellier, France

Contact the author*

Keywords

Vitis vinifera L., untargeted metabolites, single berry, phenology

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Unravelling the microbial community structure and aroma profile of Agiorgitiko wine under different inoculation schemes

Agiorgitiko (Vitis vinifera L. cv.) is the most widely cultivated indigenous red grape variety in Greece, known for the production of Protected Designation of Origin Nemea wines.

The ampelographic collection – glorious past, challenging present, expectant future

During the more than 190 years since the founding of the first ampelographic collection, the creation of a series of collections is attested on the territory of the Republic of Moldova, each operating in different historical periods and socio-economic conditions,

Vintage by vine interactions most strongly influence Pinot noir grape and wine composition in New Zealand

Vine genetics, fruit maturity, region and vineyard are perceived as factors that strongly influence Pinot noir grape and wine composition. Our study aims to understand the relationship between grape (and ultimately wine) composition and the physical appearance and performance characteristics of a vine (i.e. vine ideotype). Our experimental approach controlled these variables by

Insights into the stable isotope ratio variability of hybrid grape varieties

The wine industry faces the consumer’s increasing demand for a sustainable and environmentally-friendly production [1]. This demand has been shared and boosted by the European Union within the European Green Deal in the Farm to Fork strategy that aims to reduce a 50% the pesticide utilisation in farming systems. Among the agronomical approaches so far proposed, the use of mould resitant hybrid varieties -based on crossings of Vitis vinifera with other Vitis spp [2]- with a high tolerance to the attack of vine patogens is gaining the vinegrowers attention and the production area is continuously increasing

Organic mulches slightly influence wine phenolic composition and sensorial properties

Grapevines have traditionally been grown in semi-arid areas, but viticulture is now compromised by climate change. Therefore, it is necessary to implement environmentally friendly viticulture practices to adapt grapevines to current climatic conditions. In this context, organic mulches offer many benefits, such as reduced soil erosion and increased organic matter, soil water content and crop productivity. However, these practices must not compromise grape and wine quality. Therefore, the objective of this study was to evaluate the effect on wine physicochemical and phenolic composition and sensorial properties of different soil management practices on the vine row. Over four years, five soil treatments were examined in two different vineyards.