terclim by ICS banner
IVES 9 IVES Conference Series 9 Regulation of terpene production in methyl jasmonate treated cell-cultures

Regulation of terpene production in methyl jasmonate treated cell-cultures

Abstract

Terpenes are responsible for flavors and aromas of grapes, however, they also protect from radiation, participate in biotic stress and antioxidant mechanisms. The phytohormone methyl jasmonate (MeJA) mediates many of these stress responses and has been associated with increased terpene content in berries. Here, we generated transcriptomic data of Vitis vinifera cv. ‘Gamay’ cells treated with MeJA (100 μM) and cyclodextrins (50 μM) to understand these responses. Ontology analysis revealed that up-regulated genes (URGs) were enriched in jasmonic acid biosynthesis and signaling terms, as expected. Inspection of transcription factors (TFs) among URGs allowed us to study uncharacterized TFs.  MapMan enrichment analysis on their TOP420 co-expressed genes (CEGs) allowed us to delimit some TFs highly enriched in jasmonate-related terms. This was the case of VviMYC2, the only grape member of the bHLH IIIe subgroup, and the best candidate for studying the regulation of jasmonate signaling. We confirmed the binding potential of MYC2 by DAP-seq, and combining it to the list of MeJA-URGs and MYC2-CEGs, we generated a list of high-confidence targets that included jasmonate-related genes and TFs such as MYB24, previously found to interact with MYC2 and required for the activation of terpenoid genes. In concordance, our MeJA data showed 13 significantly induced TPS genes, 9 of which are bound by MYB24, MYC2 or both. A few terpenoid compounds associated with the induced TPSs were significantly accumulated by MeJA. Our data suggests MYC2 regulates the jasmonate pathway and mediates terpene production cooperating with MYB24 in response to MeJA.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Jone Echeverria1, Chen Zhang1, Chiara Foresti2 Antonio Santiago1, Luis Orduña1, Paolo Sonego3, Massimo Pindo3, Sara Zenoni2, Marco Moretto3, José Tomás Matus1*

1 Institute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, Paterna, 46980, Valencia, Spain
2 Department of Biotechnology, University of Verona, 37134, Verona, Italy
3 Center Agriculture Food Environment (C3A), University of Trento/Fondazione Edmund Mach, via E. Mach 1, 38098, San Michele all’Adige (TN), Italy

Contact the author*

Keywords

gene expression, plant cell suspensions, terpenes, methyl jasmonate, transcription factors

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Adaptation and resilience of scions and rootstocks to water constraint? It’s complicated and requires an integrated approach

The ability, and the underlying mechanisms of grapevines to cope with and adapt to recurring water constraints, are the focuses of this study.

Read More

Exploring the influence of terroir on the sensorial and aroma profiles of wines – An application to red wines from AOC Corbières

The aromatic profile of a wine is the result of volatile molecules present in grapes (varietal or primary aromas) and those produced during the winemaking process of fermentation (secondary aromas) and during wine aging (tertiary aromas).

Read More

Description of the relationship between trunk disease expression and meteorological conditions, irrigations and physiological response in Chardonnay grapevines

In this audio recording of the IVES science meeting 2022, Florence Fontaine (Université de Reims Champagne Ardenne) speaks about grapevine trunk disease. This presentation is based on an original article accessible for free on OENO One.

Read More

Effects of the biodynamic preparations 500 and 501 on vine and berry physiology, pedology and the soil microbiome

In the pursuit of increasing sustainability, climate change resiliency and independence of synthetic pesticides in agriculture, the interest of consumers and producers in organic and biodynamic farming is steadily increasing. This is in particular the case for the vitivinicultural industry in Europe, where more and more producers are converting from organic to biodynamic farming. However, clear scientific evidence showing that biodynamic farming improves vine physiology, vine stress resilience, berry or wine quality, or is more sustainable for the environment is still lacking although this issue has been addressed by several research teams worldwide.

Read More

From vineyard to bottle. Rationalizing grape compositional drivers of the expression of “Amarone della Valpolicella” terroir

Valpolicella is a famous Italian wine-producing region. One of its main characteristic is the intensive use of grapes that are submitted to post-harvest withering. This is rather unique in the context of red wine, especially for the production of a dry red wine such as Amarone. Amarone wines produced in Valpolicella different geographic origin are anecdotally believed to be aromatically different, although there is no systematic study addressing the chemical bases of such diversity. Aroma is the product of a biochemical and technological series of steps, resulting from the contribution of different volatile molecules deriving from grapes, fermentations, and reactions linked to aging, as well as one of the most important features in the expression of the geographic identity and sensory uniqueness of a wine.

Read More