INSTITUTO DE INVESTIGACIONES EN RECURSOS NATURALES Y SUSTENTABILIDAD JOSE SANCHEZ LABRADOR S.J.
Unidad Ejecutora - UE
congresos y reuniones científicas
IDENTIFICATION OF NON-CONVENTIONAL WINE YEAST SPECIES IN VITIS ECOSYSTEMS OTHER THAN V. VINIFERA
CONTI, FRANCISCO; RAYMOND EDER, MARÍA L.; ROSA, ALBERTO L.
Congreso; Reunión Conjunta de Sociedades de Biociencias; 2017
We studied the identity and dynamics of the indigenous yeast population present during the spontaneous fermentation of must from Isabella (V. labrusca L.) grapes, harvested at the province of Córdoba (Argentina). Non-Saccharomyces and S. cerevisiae yeast species were isolated and identified using selective growth media and DNA-based molecular methods. S. bacillaris was the most preponderant yeast (~70%) at early stages of spontaneous fermentation of Isabella. C. azymoides, C. californica and P. cecembensis, yeast species not previously found on V. vinifera ecosystems, were recognized on Isabella fermenting grape must. Interestingly, these yeast species have recently been isolated from V. labrusca grapes harvested from vineyards in the Azores Archipelago. Thus, specific biological interactions between grapevines and yeast species may underlie the assembly of differential Vitis-microbial communities.