Sulfur and adenine metabolisms are linked, and both modulate sulfite resistance in wine yeast.
作者： Agustín Aranda , Elena Jiménez-Martí , Helena Orozco , Emilia Matallana , Marcellí del Olmo
DOI: 10.1021/JF060851B
关键词:
摘要: Sulfite treatment is the most common way to prevent grape must spoilage in winemaking because yeast Saccharomyces cerevisiae particularly resistant this chemical. In paper we report that sulfite resistance depends on sulfur and adenine metabolism. The amount of methionine a chemically defined growth medium modulates wine yeasts. Mutations biosynthetic pathway or presence synthetic minimal culture increase resistance. has opposite effect, inducing higher sensitivity SO2. concentration methionine, adenine, influences progress fermentation at transcriptional level expression genes involved (MET16), (ADE4), acetaldehyde (ALD6) alters pattern all these genes. This fact indicates response stress complex involves several meta...
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