Arbuscular mycorrhizal fungi (AMF) belong to the phylum Glomeromycota and form distinctive structures both inside and outside plant roots. AMF penetrate the plant cell and approximately 80% of terrestrial plant species have AMF. Ectomycorrhizal fungi (EMF) are primarily Basidiomycetes and Ascomycetes and do not penetrate the plant cell. AMF associate with herbs, grasses, crops and many trees. EMF typically form with woody plants, especially in forests. In forest soils, about 90% of the biomass is fungi, while in agricultural soils, it is about 50%.
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Lesson 4.1 - Introduction to arbuscular mycorrhizal fungi (AMF) Lesson 4.1 introduces the Kingdom of fungi and the phylum Glomeromycota which are the arbuscular mycorrhizal, root symbiotic fungi which partner up with at least 80% of terrestrial plants playing a vital role in plant nutrition.
https://www.youtube.com/watch?v=ikMNhNZxO7s