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Cryptic functional diversity within a grass mycobiome.

Cedric Ndinga-Muniania1,2, Nicholas Wornson3,4, Michael R Fulcher5

  • 1Plant and Microbial Biology Graduate Program, University of Minnesota, St. Paul, Minnesota, United States of America.

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Summary
This summary is machine-generated.

Fungal endophytes in prairie grass exhibit hidden functional diversity. These plant-associated fungi show distinct growth rates and carbon resource utilization, impacting host-environment interactions.

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Area of Science:

  • Microbial Ecology
  • Plant-Fungal Interactions
  • Ecology and Evolution

Background:

  • Eukaryotic hosts possess diverse microbiomes influencing host fitness and environmental responses.
  • Fungal endophytes are key components of plant microbiomes, yet their functional trait diversity remains underexplored.
  • Understanding these traits is crucial for elucidating host-environment interactions.

Purpose of the Study:

  • To isolate and taxonomically characterize fungal endophytes from the prairie grass *Andropogon gerardii*.
  • To investigate the functional diversity in carbon resource utilization and growth among these fungal endophytes.
  • To analyze the phylogenetic structure of fungal endophyte communities in relation to their functional traits.

Main Methods:

  • Utilized two culturing techniques for isolating fungal endophytes from *Andropogon gerardii*.
  • Employed rDNA barcode sequencing for taxonomic diversity assessment.
  • Assessed carbon compound resource use and growth patterns in a subset of isolated fungi.
  • Applied community phylogenetic analyses to link taxonomy and function.

Main Results:

  • Identified phylogenetically distinct fungal endophyte communities within *A. gerardii*.
  • Discovered assemblages of slow- and fast-growing fungi with differential carbon substrate utilization.
  • Revealed previously undescribed functional diversity in carbon resource use and growth strategies.
  • Demonstrated a link between phylogenetic relatedness and functional traits in fungal endophyte communities.

Conclusions:

  • Fungal endophyte communities in *A. gerardii* harbor significant cryptic functional diversity.
  • Phylogenetic structure influences the functional traits, such as carbon use and growth, of these endophyte communities.
  • This functional diversity has implications for host fitness and ecosystem processes.