terclim by ICS banner
IVES 9 IVES Conference Series 9 Effects of hormone- and natural-based elicitors at the transcriptomic level in berries of cv. Tempranillo

Effects of hormone- and natural-based elicitors at the transcriptomic level in berries of cv. Tempranillo

Abstract

One of the most important effects of climate change in wine-growing areas is the advance of phenological stages, especially concerning early berry ripening. In the hottest seasons, this results in a lack of synchrony between sugar and phenolic ripeness. In order to cope with this fact, a general effort is being made by researchers and growers aiming at delaying ripening through different strategies. One of the proposed approaches is the application of elicitors. This study aims to assess the effect at the transcriptomic level of the application of three hormone- and natural-based elicitors in Tempranillo. The RNA-seq libraries were sequenced on NovaSeq 6000 Illumina platform (2×150 bp, paired-end). The application of elicitors showed a differential gene expression level with respect to control plants shortly after their application. In terms of the biosynthesis of phenolic compounds, all three elicitors demonstrated an inhibition of tannin-synthesizing genes while promoting anthocyanin synthesis. Changes in sugar accumulation were also observed; all three elicitors caused an underexpression of monosaccharide synthesis related genes. In addition, the application of elicitors overexpressed key enzymes in cell wall reformulation, such as xyloglucan endotransglucosylases/hydrolases. Conversely, some adverse effects on genes related to aroma and stress response, among others, were found. To sum up, the application of elicitors might be beneficial for the advance of anthocyanin synthesis and sugar accumulation delay.

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Libe Renteria1, Juan Velasco1, Manuel Alfaro1,2, Nazareth Torres1,2*, Sara Crespo1,2, Ana Fernández-Morales1, Maite Loidi1, Gonzaga Santesteban1,2, Jorge Urrestarazu1,2

1 Dept. of Agronomy, Biotechnology and Food Science, Public University of Navarre, Campus Arrosadia, 31006 Pamplona-Iruña, Navarra, Spain
2 Institute for Multidisciplinary Research in Applied Biology (IMAB-UPNA), Public University of Navarre, Campus Arrosadia 31006 Pamplona-Iruña, Spain

Contact the author*

Keywords

phenolic compounds, anthocyanins, climate change, transcriptomics, sugars

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Characteristics of ecological production of grape and wine in Prizren’s vineyard territory in Yugoslavia

Prizren’s vineyard territory-y assigned for ecological production of grapes and wine includes 1. 200 hectares of vineyard located in five separate localities which belongs to the P KB “Kosovo vina”, Mala Krusa in Prizren. Division of vineyard territory in zones was carried out in 1974. Pertaining to the vineyards, the climate and soil conditions have been studied and determined as well as topographie establishing of vineyard boundaries.

Petiole phosphorus concentration is controlled by the rootstock genetic background in grapevine: is this a key for understanding rootstock conferred vigour?

Grapevine, Vitis vinifera, requires grafting on Phylloxera tolerant rootstocks of American origin in most viticultural areas of the world. The most commonly used species in rootstock creation are V. berlandieri, V. riparia and V. rupestris. Rootstocks not only provide tolerance to Phylloxera but assure the supply of water and mineral nutrients to the scion. The objective of this work was to determine to what extent rootstocks of different parentages alter the mineral composition of petioles of grapevine.

Phenotypical impact of a floral somatic mutation in the cultivar Listán Prieto

The accession Criolla Chica Nº2 (CCN2) is catalogued as a floral mutation of cultivar Criolla Chica (synonym for cv. Listán Prieto). Contrary to what is observed in hermaphrodite-cultivated varieties like Criolla Chica, CCN2 exhibits a prevalence of masculinized flowers. Aiming to study the incidence and phenotypical implications of this mutation, CCN2 plants were deeply studied using Criolla Chica ‘Ballista’ (CCBA) as control plants. For each CCN2 plant, two inflorescences per shoot were sampled and segmented into proximal, mid and distal positions, relative to the pedicel. Flowers were observed through magnifying lens and classified according to OIV151 descriptor.

Metabolic response of vitis vinifera and interspecific vitis sp. varieties to heat stress, water deficit and combined stress, using a metabolomic approach

As greenhouse gas emissions continue to rise, climate projections indicate an increased likelihood of heat waves and drier conditions in canada. these changes pose significant challenges to grapevine cultivation, particularly during critical growth stages such as new plantings. interspecific hybrid grape varieties, developed through different breeding programs that combine vitis vinifera with more robust species like v. riparia and v. labrusca varieties, are often touted for their potential resilience to environmental stress.

SO2 consumption in white wine oxidation: approaches to low-input vinifications based on rapid electrochemical analyses and predictive enology

Oxidative stability is a critical factor in wine shelf-life. SO₂ is commonly added to wine due to its strong antioxidant activity, although there is a general push to reduce SO₂ use in vinification.