Resource availability and competition shape the evolution of survival and growth ability in a bacterial community.

Resource availability is one of the main factors determining the ecological dynamics of populations or species. Fluctuations in resource availability can increase or decrease the intensity of resource competition. Resource availability and competition can also cause evolutionary changes in life-hist...

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Autores principales:	Minna Pekkonen, Tarmo Ketola, Jouni T Laakso
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/02feb293fbbb4eacbb94fc7333c907a3
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spelling	oai:doaj.org-article:02feb293fbbb4eacbb94fc7333c907a32021-11-18T08:53:19ZResource availability and competition shape the evolution of survival and growth ability in a bacterial community.1932-620310.1371/journal.pone.0076471https://doaj.org/article/02feb293fbbb4eacbb94fc7333c907a32013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24098791/?tool=EBIhttps://doaj.org/toc/1932-6203Resource availability is one of the main factors determining the ecological dynamics of populations or species. Fluctuations in resource availability can increase or decrease the intensity of resource competition. Resource availability and competition can also cause evolutionary changes in life-history traits. We studied how community structure and resource fluctuations affect the evolution of fitness related traits using a two-species bacterial model system. Replicated populations of Serratia marcescens (copiotroph) and Novosphingobium capsulatum (oligotroph) were reared alone or together in environments with intergenerational, pulsed resource renewal. The comparison of ancestral and evolved bacterial clones with 1 or 13 weeks history in pulsed resource environment revealed species-specific changes in life-history traits. Co-evolution with S. marcescens caused N. capsulatum clones to grow faster. The evolved S. marcescens clones had higher survival and slower growth rate then their ancestor. The survival increased in all treatments after one week, and thereafter continued to increase only in the S. marcescens monocultures that experienced large resource pulses. Though adaptive radiation is often reported in evolution studies with bacteria, clonal variation increased only in N. capsulatum growth rate. Our results suggest that S. marcescens adapted to the resource renewal cycle whereas N. capsulatum was more affected by the interspecific competition. Our results exemplify species-specific evolutionary response to both competition and environmental variation.Minna PekkonenTarmo KetolaJouni T LaaksoPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 9, p e76471 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Minna Pekkonen Tarmo Ketola Jouni T Laakso Resource availability and competition shape the evolution of survival and growth ability in a bacterial community.
description	Resource availability is one of the main factors determining the ecological dynamics of populations or species. Fluctuations in resource availability can increase or decrease the intensity of resource competition. Resource availability and competition can also cause evolutionary changes in life-history traits. We studied how community structure and resource fluctuations affect the evolution of fitness related traits using a two-species bacterial model system. Replicated populations of Serratia marcescens (copiotroph) and Novosphingobium capsulatum (oligotroph) were reared alone or together in environments with intergenerational, pulsed resource renewal. The comparison of ancestral and evolved bacterial clones with 1 or 13 weeks history in pulsed resource environment revealed species-specific changes in life-history traits. Co-evolution with S. marcescens caused N. capsulatum clones to grow faster. The evolved S. marcescens clones had higher survival and slower growth rate then their ancestor. The survival increased in all treatments after one week, and thereafter continued to increase only in the S. marcescens monocultures that experienced large resource pulses. Though adaptive radiation is often reported in evolution studies with bacteria, clonal variation increased only in N. capsulatum growth rate. Our results suggest that S. marcescens adapted to the resource renewal cycle whereas N. capsulatum was more affected by the interspecific competition. Our results exemplify species-specific evolutionary response to both competition and environmental variation.
format	article
author	Minna Pekkonen Tarmo Ketola Jouni T Laakso
author_facet	Minna Pekkonen Tarmo Ketola Jouni T Laakso
author_sort	Minna Pekkonen
title	Resource availability and competition shape the evolution of survival and growth ability in a bacterial community.
title_short	Resource availability and competition shape the evolution of survival and growth ability in a bacterial community.
title_full	Resource availability and competition shape the evolution of survival and growth ability in a bacterial community.
title_fullStr	Resource availability and competition shape the evolution of survival and growth ability in a bacterial community.
title_full_unstemmed	Resource availability and competition shape the evolution of survival and growth ability in a bacterial community.
title_sort	resource availability and competition shape the evolution of survival and growth ability in a bacterial community.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/02feb293fbbb4eacbb94fc7333c907a3
work_keys_str_mv	AT minnapekkonen resourceavailabilityandcompetitionshapetheevolutionofsurvivalandgrowthabilityinabacterialcommunity AT tarmoketola resourceavailabilityandcompetitionshapetheevolutionofsurvivalandgrowthabilityinabacterialcommunity AT jounitlaakso resourceavailabilityandcompetitionshapetheevolutionofsurvivalandgrowthabilityinabacterialcommunity
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Resource availability and competition shape the evolution of survival and growth ability in a bacterial community.

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