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…

Comparison of two procedures to measure foamability from sparkling base wines supplemented with acacia gums

In sparkling wines, foam is a relevant aspect whose measurement method could affect the results. The shaking test (ST) is a simple method measuring foamability1,2

Water use efficiency of Chardonnay under different grafting combinations in the viticultural area of Franciacorta

Drought poses a challenge to future viticulture, exacerbated by climate change, which increases the frequency and severity of water shortages.

Vino e paesaggio: materiali per il governo del territorio vitivinicolo. Il piano regolatore delle città del vino

S’intende per Piano Regolatore delle Città del Vino la metodologia per redigere la parte strutturale dello strumento comunale di governo del territorio. Parliamo, infatti, del principale strumento comunale di governo del territorio, così come è venuto maturando nella riflessione delle Città del Vino, strumento che si misura con la sfida di governare tutto il territorio in modo coerente e sostenibile, a partire dal riconoscimento del valore del “sistema vigneto” e della sua intrinseca fragilità.

Grapevine genotypes differ in xylem vessel occlusion after winter pruning 

Grapevines are continually wounded throughout their cultivation especially during winter pruning. Grapevines respond to wounding by occluding xylem vessels with gels or tyloses to limit pathogen attack and dehydration of the tissues. Although the production of xylem vessel occlusions has been studied in grapevine, to date we have no knowledge of whether different genotypes respond differently. The objective of this study was to characterize the genetic variation in xylem vessel occulsions in five different scion genotypes pruned at different dates.

Environmental sustainability in the production of grappa with the use of mould-resistant grape varieties: the aroma characterisation of distillates

Grappa is the most important italian spirit and its production includes elements of history, tradition, and culture of the transalpine country. In accordance with EU laws, grappa is obtained from the fermentation and distillation of the pomace, eventually added with fermentation lees and water. Grappa is one of the richest fruit distillates in volatile compounds that confer to the product its characteristic flagrance. The aroma is largely due to the volatile compounds present in the raw materials, in particular alcohols, esters and carbonyl compounds formed during the alcoholic fermentation, but also to grape aromas such as terpenols and norisoprenoids, that confers grappa the distinctive floral scents.