Schimmels: Zygomycota

Zygomycota are mainly terrestrial, saprophytic molds that are crucial decomposers.

Phylogenetic studies show they form two clades: Mucoromycota, which includes some symbiotic fungi, and Zoopagomycota, which are primarily parasitic and pathogenic.

Coenocytic hyphae of Zygomycota allow unrestricted and efficient nutrient distribution.

They reproduce asexually or sexually. Asexual reproduction occurs through sporangiospores, which develop in a sac-like sporangium.

The sporangium releases spores upon rupturing, which germinate on a suitable substrate to form mycelia.

Sexual reproduction occurs when compatible hyphal strains fuse to form gametangia, which develop into a zygosporangium capable of surviving harsh conditions.

As conditions improve, the diploid zygospore undergoes meiosis to form haploid spores, which germinate into new hyphae, enhancing survival through genetic variation.

Many molds, like Rhizopus stolonifer or black bread mold, thrive on carbohydrate-rich foods like bread and fruits.

Some species, such as Rhizopus oligosporus, are used to ferment foods like tempeh, while some species of Mucor and Rhizopus are opportunistic pathogens.