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Invasive Californian death caps develop mushrooms unisexually and bisexually

Author

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  • Yen-Wen Wang

    (University of Wisconsin-Madison)

  • Megan C. McKeon

    (University of Wisconsin-Madison
    University of Wisconsin-Madison)

  • Holly Elmore

    (Rethink Priorities)

  • Jaqueline Hess

    (Cambrium GmbH)

  • Jacob Golan

    (University of Wisconsin-Madison)

  • Hunter Gage

    (University of Wisconsin-Madison)

  • William Mao

    (University of Wisconsin-Madison)

  • Lynn Harrow

    (University of Wisconsin-Madison
    University of Wisconsin-Madison)

  • Susana C. Gonçalves

    (University of Coimbra)

  • Christina M. Hull

    (University of Wisconsin-Madison
    University of Wisconsin-Madison)

  • Anne Pringle

    (University of Wisconsin-Madison
    University of Wisconsin-Madison)

Abstract

Canonical sexual reproduction among basidiomycete fungi involves the fusion of two haploid individuals of different mating types, resulting in a heterokaryotic mycelial body made up of genetically different nuclei. Using population genomics data and experiments, we discover mushrooms of the invasive and deadly Amanita phalloides can also be homokaryotic; evidence of sexual reproduction by single, unmated individuals. In California, genotypes of homokaryotic mushrooms are also found in heterokaryotic mushrooms, implying nuclei of homokaryotic mycelia are also involved in outcrossing. We find death cap mating is controlled by a single mating type locus, but the development of homokaryotic mushrooms appears to bypass mating type gene control. Ultimately, sporulation is enabled by nuclei able to reproduce alone as well as with others, and nuclei competent for both unisexuality and bisexuality have persisted in invaded habitats for at least 17 but potentially as long as 30 years. The diverse reproductive strategies of invasive death caps are likely facilitating its rapid spread, suggesting a profound similarity between plant, animal and fungal invasions.

Suggested Citation

  • Yen-Wen Wang & Megan C. McKeon & Holly Elmore & Jaqueline Hess & Jacob Golan & Hunter Gage & William Mao & Lynn Harrow & Susana C. Gonçalves & Christina M. Hull & Anne Pringle, 2023. "Invasive Californian death caps develop mushrooms unisexually and bisexually," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42317-z
    DOI: 10.1038/s41467-023-42317-z
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    References listed on IDEAS

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    1. James A. Fraser & Steven S. Giles & Emily C. Wenink & Scarlett G. Geunes-Boyer & Jo Rae Wright & Stephanie Diezmann & Andria Allen & Jason E. Stajich & Fred S. Dietrich & John R. Perfect & Joseph Heit, 2005. "Same-sex mating and the origin of the Vancouver Island Cryptococcus gattii outbreak," Nature, Nature, vol. 437(7063), pages 1360-1364, October.
    2. John Jumper & Richard Evans & Alexander Pritzel & Tim Green & Michael Figurnov & Olaf Ronneberger & Kathryn Tunyasuvunakool & Russ Bates & Augustin Žídek & Anna Potapenko & Alex Bridgland & Clemens Me, 2021. "Highly accurate protein structure prediction with AlphaFold," Nature, Nature, vol. 596(7873), pages 583-589, August.
    3. Xiaorong Lin & Christina M. Hull & Joseph Heitman, 2005. "Sexual reproduction between partners of the same mating type in Cryptococcus neoformans," Nature, Nature, vol. 434(7036), pages 1017-1021, April.
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