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…

Drought tolerance assessment and differentiation of grapevine cultivars using physiological metrics: insights from field studies

This study aimed to validate a protocol and compare metrics for evaluating drought tolerance in two Vitis vinifera grapevine cultivars under field conditions. Various metrics were calculated to represent the physiological responses of plants to progressive water deficit. Data were collected from Sauvignon Blanc and Chardonnay plants subjected to three irrigation levels during the 2022-2023 season, along with data from three previous seasons. Hydro-escape areas were used to assess the plant’s ability to reduce water potential with decreasing soil water availability.

Read More

Multidisciplinary strategies for understanding ill-defined concepts

Aims: The objective of the present work is to review strategies applied to decrypt multidimensional and ill-defined concepts employed by winemakers and to illustrate these strategies with recent applications.

Read More

Application of UV-B radiation in pre- and postharvest as an innovative and sustainable cultural practice to improve grape phenolic composition

Ultraviolet radiation (UVR) is a minor part of the solar spectrum, but it represents an important ecological factor that influences many biological processes related to plant growth and development. In recent years, the application of UVR in agriculture and food production is emerging as a clean and environmentally friendly technology.
In grapevine, many studies have been conducted on the effects of ambient levels of UVR, but there are few considering the effects of UV-B application on grape phenolic composition under commercial growing or postharvest conditions.

Read More

Organic mulches improve vine vigour, yield and physiological response in a semi-arid region

Recycled organic mulch within the row in vineyard floor management has become an interesting ecological strategy to adapt the crop to climate change consequences in semi-arid regions.
This study aimed to assess the impact of three recycled organic mulches [straw (STR), grape pruning debris (GPD), and spent mushroom compost (SMC)] and two conventional soil management practices [herbicide (HERB) and under-row tillage (TILL)] on vegetative vigour (NDVI), production (kg/plant), and physiological parameters (δ13C in grapes and leaf gas exchange during four grapevine phenology stages). Additionally, temperature and water soil parameters were collected at three soil depths. Data was collected during the 2021 and 2022 grapevine growing seasons in La Rioja, Spain.

Read More

An evaluation of the physiological responses of young grapevines planted and maintained under water constraint 

The aim of this ongoing study is to evaluate the degree of adaptability of grapevine scion:rootstock combinations to different conditions of water constraint. Here we present results from the young vine development phase, using three scenarios of water constraint that were implemented from planting. The experimental vineyard was established in 2020 and the data presented will cover the 2021/2022 and 2022/2023 seasons. The experiment consisted of the cultivars Pinotage (PIN), Shiraz (SHI) and Cabernet Sauvignon (CAB), grafted on two rootstocks, Richter 110 (R110) and USVIT-8-7 (US87).

Read More