The sensitivity of yeasts and yeasts-like fungi to copper and sulfur could explain lower yeast biodiversity in organic vineyards

C. Grangeteau 1 V. David 2 H. Alexandre 2 M. Guilloux-Benatier 2 S. Rousseaux 2
1 PMB - Procédés Microbiologiques et Biotechnologiques
PAM - Procédés Alimentaires et Microbiologiques, PAM - Procédés Alimentaires et Microbiologiques [Dijon]
2 VAlMiS - Vin Aliment Microbiologie et Stress
PAM - Procédés Alimentaires et Microbiologiques, PAM - Procédés Alimentaires et Microbiologiques [Dijon]
Abstract : Although differences in yeast biodiversity have often been found between vineyards subjected to organic protection or conventional protection, little is known about the effect of copper and sulfur fungicides (the only fungicides allowed in organic farming) on yeast populations. The sensitivity to copper and sulfur of 158 yeast isolates of seven different species (Aureobasidium pullulans, Hanseniaspora guilliermondii, Hanseniaspora uvarum, Metschnikowia sp., Pichia membranifaciens, Saccharomyces cerevisiae and Starmerella bacillaris) was evaluated. The species Aureobasidium pullulans and Starmerella bacillaris appeared to be more resistant to copper than the other species tested. The species Aureobasidium pullulans, Hanseniaspora guilliermondii and Metschnikowia sp. had the highest sulfur resistance. Thus, only isolates of the species Aureobasidium pullulans exhibited high resistance to both antifungal agents. These results may explain the lower diversity of yeasts present on berries and the strong dominance of the species Aureobasidium pullulans for vineyards protected by copper or sulfur-based fungicides compared to other vineyards reported by several studies.
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Article dans une revue
FEMS Yeast Research, Oxford University Press (OUP), 2017, 〈10.1093/femsyr/fox092〉
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https://hal-univ-bourgogne.archives-ouvertes.fr/hal-01667277
Contributeur : Pam - Université de Bourgogne <>
Soumis le : mardi 19 décembre 2017 - 11:28:47
Dernière modification le : mercredi 5 septembre 2018 - 17:04:04

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C. Grangeteau, V. David, H. Alexandre, M. Guilloux-Benatier, S. Rousseaux. The sensitivity of yeasts and yeasts-like fungi to copper and sulfur could explain lower yeast biodiversity in organic vineyards. FEMS Yeast Research, Oxford University Press (OUP), 2017, 〈10.1093/femsyr/fox092〉. 〈hal-01667277〉

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