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Original Articles

Amplified Fragment-Length Polymorphism, a New Method for the Analysis of Brewer's Yeast DNA Polymorphism

AFLP, un nuevo método para el análisis del polimorfismo del ADN de la levadura cervecera

, , , &
Pages 195-200 | Received 11 Nov 2000, Accepted 16 Apr 2001, Published online: 01 Feb 2018
 

Abstract

This study sought to confirm the utility of amplified fragment-length polymorphism for identifying brewery yeast strains. Our results were promising, since single primer pairs can be used to distinguish most yeast strains. The use of several primer pairs, however, should still increase the method's reproducibility. Furthermore, this technique yields quantitative data on genetic polymorphism. Among the 26 strains studied, we calculated a 55% average of shared fragments. This similarity indicator was higher for bottom-fermenting strains (72%) than for top-fermentation yeasts (45%).

RESUMEN

Este estudio tenía como objetivo confirmar la utilidad en la identificación de cepas de levadura cervecera de la técnica del polimorfismo en las longitudes de fragmentos amplificados por medio de la reacción de la polimerasa en cadena. Nuestros resultados han sido prometedores puesto que con una única pareja de cebadores se pueden distinguir muchas cepas de levadura. No obstante, el empleo de diversas parejas de cebadores debería aumentar aún más la reproducibilidad del método. Además, esta técnica proporciona datos cuantitativos sobre el polimorfismo genético. Hemos calculado que, para las 26 cepas estudiadas, existe un promedio de fragmentos compartidos del 55%. Este índice de similitud era mayor en las cepas de fermentación baja (72%) que en las levaduras de fermentación alta (45%).

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