Resource Availability and Competition Shape the Evolution of Survival and Growth Ability in a Bacterial Community
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{"title"=>"Resource Availability and Competition Shape the Evolution of Survival and Growth Ability in a Bacterial Community", "type"=>"journal", "authors"=>[{"first_name"=>"Minna", "last_name"=>"Pekkonen", "scopus_author_id"=>"23978481900"}, {"first_name"=>"Tarmo", "last_name"=>"Ketola", "scopus_author_id"=>"8202282300"}, {"first_name"=>"Jouni T.", "last_name"=>"Laakso", "scopus_author_id"=>"7006515572"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"sgr"=>"84884784127", "doi"=>"10.1371/journal.pone.0076471", "pui"=>"369919360", "pmid"=>"24098791", "scopus"=>"2-s2.0-84884784127", "issn"=>"19326203"}, "id"=>"a7b0ccd1-e906-3f3b-bfa1-b465f6fd3246", "abstract"=>"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.", "link"=>"http://www.mendeley.com/research/resource-availability-competition-shape-evolution-survival-growth-ability-bacterial-community", "reader_count"=>58, "reader_count_by_academic_status"=>{"Unspecified"=>3, "Professor > Associate Professor"=>1, "Researcher"=>10, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>18, "Student > Postgraduate"=>1, "Student > Master"=>7, "Other"=>2, "Student > Bachelor"=>11, "Lecturer > Senior Lecturer"=>1, "Professor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>3, "Professor > Associate Professor"=>1, "Researcher"=>10, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>18, "Student > Postgraduate"=>1, "Student > Master"=>7, "Other"=>2, "Student > Bachelor"=>11, "Lecturer > Senior Lecturer"=>1, "Professor"=>1}, "reader_count_by_subject_area"=>{"Engineering"=>2, "Unspecified"=>3, "Environmental Science"=>7, "Biochemistry, Genetics and Molecular Biology"=>3, "Agricultural and Biological Sciences"=>39, "Medicine and Dentistry"=>1, "Physics and Astronomy"=>1, "Immunology and Microbiology"=>2}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>2}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>1}, "Physics and Astronomy"=>{"Physics and Astronomy"=>1}, "Immunology and Microbiology"=>{"Immunology and Microbiology"=>2}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>39}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>3}, "Unspecified"=>{"Unspecified"=>3}, "Environmental Science"=>{"Environmental Science"=>7}}, "reader_count_by_country"=>{"United States"=>3, "Mexico"=>1}, "group_count"=>2}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1220135"], "description"=>"<p>Biofilm amount was measured at the end of a weeklong fitness assay. The bars show the estimated marginal mean biofilm amount based on the GLMM + SE in all treatments. Treatments are the same as in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0076471#pone-0076471-g001\" target=\"_blank\">Figure 1</a>.</p>", "links"=>[], "tags"=>[], "article_id"=>811397, "categories"=>["Uncategorised"], "users"=>["Minna Pekkonen", "Tarmo Ketola", "Jouni T. Laakso"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0076471.g004", "stats"=>{"downloads"=>1, "page_views"=>26, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Biofilm_production_of_A_Serratia_marcescens_B_Novosphingobium_capsulatum_/811397", "title"=>"Biofilm production of A) <i>Serratia marcescens</i> B) <i>Novosphingobium capsulatum</i>.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-09-30 02:38:30"}
  • {"files"=>["https://ndownloader.figshare.com/files/1220133"], "description"=>"<p>Yield is measured as optical density, and corresponds to the total maximum biomass measured during a weeklong fitness assay. The bars show the estimated marginal mean yield based on the GLMM + SE in all treatments. Treatments are the same as in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0076471#pone-0076471-g001\" target=\"_blank\">Figure 1</a>.</p>", "links"=>[], "tags"=>[], "article_id"=>811395, "categories"=>["Uncategorised"], "users"=>["Minna Pekkonen", "Tarmo Ketola", "Jouni T. Laakso"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0076471.g002", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Yield_of_A_Serratia_marcescens_B_Novosphingobium_capsulatum_/811395", "title"=>"Yield of A) <i>Serratia marcescens</i> B) <i>Novosphingobium capsulatum</i>.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-09-30 02:38:30"}
  • {"files"=>["https://ndownloader.figshare.com/files/1220134"], "description"=>"<p>The mortality is calculated as proportional reduction in biomass during a weeklong fitness assay. The bars show the estimated marginal mean mortality based on the GLMM + SE in all treatments. Treatments are the same as in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0076471#pone-0076471-g001\" target=\"_blank\">Figure 1</a>.</p>", "links"=>[], "tags"=>[], "article_id"=>811396, "categories"=>["Uncategorised"], "users"=>["Minna Pekkonen", "Tarmo Ketola", "Jouni T. Laakso"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0076471.g003", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Mortality_of_A_Serratia_marcescens_B_Novosphingobium_capsulatum_/811396", "title"=>"Mortality of A) <i>Serratia marcescens</i> B) <i>Novosphingobium capsulatum</i>.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-09-30 02:38:30"}
  • {"files"=>["https://ndownloader.figshare.com/files/1220132"], "description"=>"<p>Growth rates were measured during a weeklong fitness assay. The bars show the estimated marginal mean growth rates (h<sup>-1</sup>) based on the GLMM + SE. The sampling time of bacterial clones is indicated on the x-axis: after 1 week = bacteria have a weeklong evolutionary history in the pulsed resource environment; after 13 weeks = evolutionary history is 13 weeks. The reference lines on the background indicate the mean maximum growth rate (dark grey line) ± SE (light grey lines) of the ancestral clones. Treatments: 1 species = species has grown in monocultures; 2 species = species has grown in two-species community; large pulse = 99,9 % of the total batch culture volume was renewed weekly; small pulse = 70% of the batch culture volume was renewed weekly.</p>", "links"=>[], "tags"=>[], "article_id"=>811394, "categories"=>["Uncategorised"], "users"=>["Minna Pekkonen", "Tarmo Ketola", "Jouni T. Laakso"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0076471.g001", "stats"=>{"downloads"=>0, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Maximum_growth_rate_of_A_Serratia_marcescens_B_Novosphingobium_capsulatum_/811394", "title"=>"Maximum growth rate of A) <i>Serratia marcescens</i> B) <i>Novosphingobium capsulatum</i>.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-09-30 02:38:30"}

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Relative Metric

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