Correlation of mycelial growth rate with other characters in evolved genotypes of Aspergillus nidulans

S.E. Schoustra, D. Punzalan

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

Fungal populations can adapt to their environment by the generation and fixation of spontaneous beneficial mutations. In this study we examined whether adaptation, measured as an increased mycelial growth rate, has correlated responses in the filamentous fungus Aspergillus nidulans with several other metric characters that could be important fitness components (colony forming units, germination speed, and biomass formation). Studying 60 populations that had evolved over 800 generations by experimental evolution, we find that only mycelial growth rate increased during adaptation to growing on solid medium. We further found that among evolved strains colony forming units is negatively correlated with mycelial growth rate and that colony forming units and biomass formation show a positive correlation. Our results give insight into changes in fungal phenotype as a result of adaptation and suggest that mycelial growth rate is the only available target of selection
Original languageEnglish
Pages (from-to)630-636
JournalFungal Biology
Volume116
DOIs
Publication statusPublished - 2012

Fingerprint

Aspergillus nidulans
genotype
Genotype
Stem Cells
correlated responses
biomass
Growth
Biomass
germination
mutation
phenotype
fungi
Germination
Population
fixation
fitness
Fungi
fungus
Phenotype
Mutation

Keywords

  • evolution
  • sex
  • fitness
  • adaptation
  • selection
  • fungi

Cite this

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abstract = "Fungal populations can adapt to their environment by the generation and fixation of spontaneous beneficial mutations. In this study we examined whether adaptation, measured as an increased mycelial growth rate, has correlated responses in the filamentous fungus Aspergillus nidulans with several other metric characters that could be important fitness components (colony forming units, germination speed, and biomass formation). Studying 60 populations that had evolved over 800 generations by experimental evolution, we find that only mycelial growth rate increased during adaptation to growing on solid medium. We further found that among evolved strains colony forming units is negatively correlated with mycelial growth rate and that colony forming units and biomass formation show a positive correlation. Our results give insight into changes in fungal phenotype as a result of adaptation and suggest that mycelial growth rate is the only available target of selection",
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Correlation of mycelial growth rate with other characters in evolved genotypes of Aspergillus nidulans. / Schoustra, S.E.; Punzalan, D.

In: Fungal Biology, Vol. 116, 2012, p. 630-636.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Correlation of mycelial growth rate with other characters in evolved genotypes of Aspergillus nidulans

AU - Schoustra, S.E.

AU - Punzalan, D.

PY - 2012

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N2 - Fungal populations can adapt to their environment by the generation and fixation of spontaneous beneficial mutations. In this study we examined whether adaptation, measured as an increased mycelial growth rate, has correlated responses in the filamentous fungus Aspergillus nidulans with several other metric characters that could be important fitness components (colony forming units, germination speed, and biomass formation). Studying 60 populations that had evolved over 800 generations by experimental evolution, we find that only mycelial growth rate increased during adaptation to growing on solid medium. We further found that among evolved strains colony forming units is negatively correlated with mycelial growth rate and that colony forming units and biomass formation show a positive correlation. Our results give insight into changes in fungal phenotype as a result of adaptation and suggest that mycelial growth rate is the only available target of selection

AB - Fungal populations can adapt to their environment by the generation and fixation of spontaneous beneficial mutations. In this study we examined whether adaptation, measured as an increased mycelial growth rate, has correlated responses in the filamentous fungus Aspergillus nidulans with several other metric characters that could be important fitness components (colony forming units, germination speed, and biomass formation). Studying 60 populations that had evolved over 800 generations by experimental evolution, we find that only mycelial growth rate increased during adaptation to growing on solid medium. We further found that among evolved strains colony forming units is negatively correlated with mycelial growth rate and that colony forming units and biomass formation show a positive correlation. Our results give insight into changes in fungal phenotype as a result of adaptation and suggest that mycelial growth rate is the only available target of selection

KW - evolution

KW - sex

KW - fitness

KW - adaptation

KW - selection

KW - fungi

U2 - 10.1016/j.funbio.2012.03.002

DO - 10.1016/j.funbio.2012.03.002

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SP - 630

EP - 636

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JF - Fungal Biology

SN - 1878-6146

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