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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.

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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)

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Keywords

grape, grey mould, VOCs, sensors, sustainability

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

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