terclim by ICS banner
IVES 9 IVES Conference Series 9 Volatile Organic Compound markers of Botrytis cinerea infection in artificially inoculated intact grape berries

Volatile Organic Compound markers of Botrytis cinerea infection in artificially inoculated intact grape berries

Abstract

The addition of partially dehydrated grapes to enrich must composition for producing complex dry/sweet wines represents a traditional practice in several regions of the world. However, the environmental conditions of dehydration chambers may facilitate the infection of Botrytis cinerea Pers. by promoting disease and provoking large grape losses. B. cinerea attack can induce alterations in the profile of volatile organic compounds (VOCs), which could be detected by sensors specifically trained to detect infection/disease-related compounds. These sensors could facilitate the early detection of the infection, consequently allowing to adjust some dehydration parameters. To deepen the understanding on alterations induced by B. cinerea on intact grape VOCs profile, berries from Sangiovese and Corvina cultivars were collected and analysed by SPME-GC-MS as such and following artificial inoculation with a spore suspension of B. cinerea (10 μl, 105 spores ml-1) or mock inoculation by using the same volume of sterile growth medium (control). Preliminary results have shown that high levels of a set of primary and secondary alcohols appeared to be emitted by inoculated berries. Some of these molecules are already reported as correlated with B. cinerea infection, while others are not mentioned as infection markers yet. Moreover, the dynamics of the emission of some of these compounds during the in vitro development of B. cinerea cultures have also been studied. Setting up sensors capable of detecting the identified volatile markers in the dehydration chambers represents an ambitious goal for reducing spoilage and grape losses via targeted interventions.

Download the abstract

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Pietro Emilio Nepi1*, Claudia Pisuttu2, Cristina Nali2, Elige Salame1, Pietro Tonutti1, Stefano Brizzolara1

1Crop Science Research Center, Scuola Superiore Sant’Anna di Studi Universitari, Piazza Martiri della Libertà,33,56127, PISA, ITALY
2Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80,56124, PISA, ITALY.(Left-aligned, italic, Arial 9)

Contact the author*

Keywords

grape, grey mould, VOCs, sensors, sustainability

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Evaluation of grape and wine quality according to harvest date, in a tropical region in Northeast Brazil

The Northeast region of Brazil is characterized by a semi-arid climate, has produced tropical wines since twenty years ago. The region is located at 09º 09’ South, 40º 22’ West, 365.5 m

Read More

Winemaking options for the improvement of the attributes of the wines from grapes with different oenological potential and sanitary status

The aim of this work was to study winemaking alternatives that will optimize the quality of the Tannat wines, taking advantage of the grape’s oenological potential.

Read More

Physiological response of new cultivars resistant to fungi confronted to drought in a semi-arid Mediterranean area

Water is one of the most limiting factors for viticulture in Mediterranean regions. Former researches showed that water shortage hampers both vegetative and reproductive developments. INRA is running programs to breed varieties carrying QTL of tolerance to major fungi, i.e. powdery and downy mildews. Some varieties have been already certified or are close to be certified. However, little is known about the response of these varieties to water deficit, which behavior is critical for their development. This study characterized physiological responses of 4 new varieties to water deficit and described relationship between them.

Read More

Methyl Jasmonate Versus Nano-Methyl Jasmonate: Effect On The Stilbene Content In Monastrell Variety

Stilbenes, a kind of non-flavonoid phenolic compounds, have been reported to be responsible for various beneficial effects. Their biological properties include antibacterial and antifungal effects, as well as cardioprotective, neuroprotective and anticancer actions (Guerrero et al. 2009).Several strategies can be used to increase stilbene content in grapes and one of them could be the use of elicitors such as methyl jasmonate. The use of this elicitor has been proven to be efficient in the production of secondary metabolites which increases the quality of wines, but its use also has some drawbacks such as its low water solubility, high volatility, and its expensive cost (Gil-Muñoz et al. 2021).

Read More

WINE WITHOUT ADDED SO₂: OXYGEN IMPACT AND EVOLUTION ON THE POLYPHENOLIC COMPOSITION DURING RED WINE AGING

SO₂ play a major role in the stability and wine during storage. Nowadays, the reduction of chemical input during red winemaking and especially the removing SO₂ is a growing expectation from the consumers. Winemaking without SO₂ is a big challenge for the winemakers since the lack of SO₂ affects directly the wine chemical evolution such as the phenolic compounds as well as its microbiological stability.

Read More