Biodiversity in Genus Agaricus

A special issue of Journal of Fungi (ISSN 2309-608X). This special issue belongs to the section "Fungal Evolution, Biodiversity and Systematics".

Deadline for manuscript submissions: closed (30 October 2023) | Viewed by 2142

Special Issue Editors


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Guest Editor
INRAE Bordeaux, Villenave d’Ornon, France
Interests: biodiversity; taxonomy; systematics; phylogeny; biology of the reproduction; genetic resources; genetics of putative adaptive traits (fruiting, adaptation to high temperature, cap color, etc.) domestication

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Guest Editor
State Key Laboratory of Mycology, Institute of Microbiology Chinese Academy of Sciences, Beijing 100101, China
Interests: diversity and systematics of macrofungi; evolutionary genomics; molecular biology of mushrooms
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Special Issue Information

Dear Colleagues,

Agaricus bisporus is one of the most cultivated and consumed mushroom species, and this situation has not changed much for several centuries. However, in recent decades, very large resources and diversity have been discovered within this species (hundreds of wild strains are available), as well as in the genus where the number of recognized species has increased from 300 to 500 in the last twenty years. This diversity is largely undiscovered and remains under-exploited. I encourage you to publish original data on all aspects of this biodiversity in this genus.

This includes taxonomy, systematics, phylogeny, biogeography, modes of reproduction, population genetics, genetic resources, ecology, habitat, variability of putative adaptive traits (mushroom fruiting, cap color, tolerance to dryness, high temperature or pathogens, etc.), edibility, and domestication. Bioactive molecules with biodiversity perspective, i.e., including comparisons between strains or basidiomata of the same or different species.

Dr. Philippe Callac
Prof. Dr. Ruilin Zhao
Guest Editors

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Keywords

  • adaptive traits
  • Agaricus biodiversity
  • bioactive molecules
  • domestication
  • phylogeny
  • population genetics
  • reproduction modes
  • taxonomy
 

Published Papers (1 paper)

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Research

21 pages, 1891 KiB  
Article
Experimental Outcrossing in Agaricus bisporus Revealed a Major and Unexpected Involvement of Airborne Mycelium Fragments
by Banafsheh Jalalzadeh, Gérard Barroso, Jean-Michel Savoie and Philippe Callac
J. Fungi 2022, 8(12), 1278; https://doi.org/10.3390/jof8121278 - 06 Dec 2022
Cited by 2 | Viewed by 1603
Abstract
Agaricus bisporus var. bisporus, the button mushroom, has a predominantly pseudohomothallic life cycle. Most of its spores are heterokaryotic and give rise to fertile heterokaryons. However, previous studies have suggested that outcrossing should not be rare in wild populations. In order to discover [...] Read more.
Agaricus bisporus var. bisporus, the button mushroom, has a predominantly pseudohomothallic life cycle. Most of its spores are heterokaryotic and give rise to fertile heterokaryons. However, previous studies have suggested that outcrossing should not be rare in wild populations. In order to discover how outcrossing occurs, we experimentally favored it between aerial propagules of a fruiting donor mycelium and a delayed receiver mycelium that only invaded culture trays. Two donor/receiver pairs were studied, and potentially hybrid basidiomata collected on the receiver trays were analyzed with a mitochondrial marker, two unlinked nuclear CAPS markers, then haplotype markers based on DNA sequences obtained after PCR cloning of the rDNA ITS region and the fruk gene. For one of the two pairs, most basidiomata were hybrids between the donor and the receiver. Genotyping of the hybrids revealed only two genotypes consistent with outcrossing involving airborne mycelium fragments rather than basidiospores. The resident receiver heterokaryon that provided its mitochondria to the hybrid basidiomata is suspected to have had a trophic contribution to their growth and successful fruiting. The high level of heterozygosity and the cultivar introgression previously revealed in wild populations of this pseudohomothallic species may result from outcrossing involving airborne pieces of mycelium. Full article
(This article belongs to the Special Issue Biodiversity in Genus Agaricus)
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