Ericoid mycorrhiza
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The ericoid mycorrhiza is a mutualistic relationship formed between members of the plant family Ericaceae and several lineages of mycorrhizal fungi. This symbiosis represents an important adaptation to acidic and nutrient poor soils that species in the Ericaceae typically inhabit, including boreal forests, bogs, and heathlands. Molecular clock estimates suggest that the symbiosis originated approximately 140 million years ago.
Epacris pulchella, an ericoid mycorrhizal epacrid from eastern Australia.
Western Azalea, Rhododendron occidentale, a western North American ericoid mycorrhizal species.
An isolate of the ericoid mycorrhizal fungus, Gamarada debralockiae, isolated from Woollsia pungens
Cranberries, an ericoid mycorrhizal crop
Arbuscular mycorrhiza
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An arbuscular mycorrhiza (AM) is a type of mycorrhiza in which the symbiont fungus penetrates the cortical cells of the roots of a vascular plant forming arbuscules. Arbuscular mycorrhiza is a type of endomycorrhiza along with ericoid mycorrhiza and orchid mycorrhiza. They are characterized by the formation of unique tree-like structures, the arbuscules. In addition, globular storage structures called vesicles are often encountered.
Flax root cortical cells containing paired arbuscules
Vesicular arbuscular mycorrhizae in the terminal roots of Horse Gram plant
Bilayered glomoid spore of arbuscular mycorrhizal fungi in the root of Horse Gram