Related Experiment Video

Updated: May 16, 2026

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
05:34

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus

Published on: June 6, 2025

High diversity and widespread occurrence of mitotic spore mats in ectomycorrhizal Pezizales

R A Healy1, M E Smith, G M Bonito

  • 1Department of Plant Biology, University of Minnesota, St. Paul, MN 55108, USA. healy089@umn.edu

Molecular Ecology
|December 5, 2012
PubMed

Insights

This study reveals widespread mitospore production in ectomycorrhizal (EcM) Pezizales fungi across continents. These fungal mitospores may be crucial for reproduction and dispersal in many EcM species.

Area of Science:

  • Mycology
  • Ectomycorrhizal symbiosis
  • Fungal reproduction

Background:

  • Fungal mitospores are known dispersal and mating units.
  • Mitospore production is infrequently documented in ectomycorrhizal (EcM) Pezizales.
  • EcM fungi form vital symbiotic relationships with trees.

Purpose of the Study:

  • To document and characterize mitospore production in a diverse range of EcM Pezizales.
  • To investigate the phylogenetic diversity and geographic distribution of EcM Pezizales producing mitospores.
  • To explore the potential role of these mitospores in fungal reproduction and dispersal.

Main Methods:

  • Sequencing of internal transcribed spacer (ITS) and large subunit (LSU) nuclear rDNA from 292 spore mats.
  • Phylogenetic analysis integrating spore mat, fruit body, and EcM root sequences.
  • Germination and ectomycorrhizal formation assays with collected mitospores.

Main Results:

  • Mitospore production was documented across diverse EcM Pezizales on three continents.
  • 48 operational taxonomic units (OTUs) from spore mats represented six independent EcM Pezizales lineages.
  • Mitospores did not germinate or form ectomycorrhizas, suggesting a role as spermatia.

Conclusions:

  • Mitospore production is a significant, widespread phenomenon in EcM Pezizales.
  • The findings suggest a crucial role for mitospores in the mating, reproduction, and/or dispersal of these fungi.
  • This study expands our understanding of fungal life cycles and ecological roles.

More Related Videos

Mycorrhizal Maps as a Tool to Explore Colonization Patterns and Fungal Strategies in the Roots of Festuca rubra and Zea mays08:28

Mycorrhizal Maps as a Tool to Explore Colonization Patterns and Fungal Strategies in the Roots of Festuca rubra and Zea mays

Published on: August 26, 2022

Related Concept Videos

Fungal Group Zygomycota01:29

Fungal Group Zygomycota

Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...
Fungal Phylum Basidiomycota01:26

Fungal Phylum Basidiomycota

Basidiomycota is a diverse phylum of fungi that includes ecologically significant decomposers such as white rot fungi, symbionts like mycorrhizal fungi, plant pathogens such as rusts and smuts, and edible species like Agaricus bisporus (the common button mushroom). These fungi play crucial roles in nutrient cycling, symbiotic relationships, and even human health. Their defining feature is the basidium, a microscopic club-shaped structure responsible for producing basidiospores.Fruiting Bodies...
Microbial Mats01:25

Microbial Mats

Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...
Overview of Fungi01:29

Overview of Fungi

Fungi are a diverse group of eukaryotes more closely related to animals than other eukaryotes. Fungal cell walls comprise chitin, a polysaccharide that provides structural strength, and glucans, which contribute to flexibility and integrity. Other polysaccharides, such as mannans and galactosans, may supplement or replace chitin in some fungi. These adaptations, along with their preference for acidic environments and tolerance for high osmotic pressure, enable fungi to thrive in various...
Fungal Phylum Microsporidia01:28

Fungal Phylum Microsporidia

Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
Fungal Phylum Ascomycota01:28

Fungal Phylum Ascomycota

Phylum Ascomycota, a major division within the subkingdom Dikarya, comprises a diverse range of fungal species, including both unicellular yeasts and filamentous molds such as Aspergillus and Penicillium. These fungi thrive in a variety of habitats, from aquatic ecosystems to terrestrial environments, playing crucial ecological and economic roles.Morphology and ReproductionThe defining characteristic of Ascomycetes, commonly referred to as sac fungi, is the ascus—a sac-like structure that...