Nutrientrichness,andspecificallytheabundanceofmono-anddisaccharidesthatcharacterizeseveralfoodmatrixes,suchasmilkandgrapejuice,hasallowedthespeciationoflacticacidbacteriaandyeastswithahighfermentationcapacityinsteadofenergeticallyfavorablerespiratorymetabolism.Intheseenvironmentalcontexts,rapidsugarconsumptionandlacticacidorethanolproduction,accumulation,andtolerance,togetherwiththeabilitytopropagateintheabsenceofoxygen,areseveralofthe“winning”traitsthathaveapparentlyevolvedandbecomespecializedtoperfectioninthesefermentingmicroorganisms.Here,wesummarizeanddiscusstheevolutionarycontextthathasdrivenenergeticmetabolisminfood-associatedmicroorganisms,usingthedairyspeciesLactococcuslactisandStreptococcusthermophilusamongprokaryotesandthebakers’yeastSaccharomycescerevisiaeamongeukaryotesasmodelorganisms.
Food environments select microorganisms based on selfish energetic behavior / D. Mora, S. Arioli, C. Compagno. - In: FRONTIERS IN MICROBIOLOGY. - ISSN 1664-302X. - 4(2013), pp. 348.1-348.6.
Food environments select microorganisms based on selfish energetic behavior
D. MoraPrimo
;S. ArioliSecondo
;C. CompagnoUltimo
2013
Abstract
Nutrientrichness,andspecificallytheabundanceofmono-anddisaccharidesthatcharacterizeseveralfoodmatrixes,suchasmilkandgrapejuice,hasallowedthespeciationoflacticacidbacteriaandyeastswithahighfermentationcapacityinsteadofenergeticallyfavorablerespiratorymetabolism.Intheseenvironmentalcontexts,rapidsugarconsumptionandlacticacidorethanolproduction,accumulation,andtolerance,togetherwiththeabilitytopropagateintheabsenceofoxygen,areseveralofthe“winning”traitsthathaveapparentlyevolvedandbecomespecializedtoperfectioninthesefermentingmicroorganisms.Here,wesummarizeanddiscusstheevolutionarycontextthathasdrivenenergeticmetabolisminfood-associatedmicroorganisms,usingthedairyspeciesLactococcuslactisandStreptococcusthermophilusamongprokaryotesandthebakers’yeastSaccharomycescerevisiaeamongeukaryotesasmodelorganisms.
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