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È grazie ai moscerini se la birra ha un gradevole aroma fruttato: il profumo viene infatti prodotto appositamente per loro dal lievito, che in questo modo cerca di attirare gli insetti per farsi dare un “passaggio” e diffondere più facilmente le sue cellule nell'ambiente.
Lo ha scoperto il gruppo di ricerca guidato dal genetista Kevin Verstrepen, dell'università belga di Lovanio. Lo studio è pubblicato sulla rivista Cell Reports.
“Due specie apparentemente così lontane, il lievito e il moscerino della frutta, hanno sviluppato una complessa simbiosi basata sugli odori”, spiega Verstrepen. “I moscerini si nutrono di lievito e il lievito trae vantaggio dagli spostamenti dei moscerini”.
ATS/CC
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