HOW LONG HAVE MYCORRHIZAE BEEN AROUND?
Fossils of early land plants contain fungal associations which are similar to mycorrhizae. Research suggests that mycorrhizae evolved with the world’s first land plants over 400 million years ago.
400 Million Year Old Fossil
mycorrhiza-like association in Aglaophyton major rhizome
Photo of 400 Myr old fossil mycorrhizae is reproduced courtesy of Professor Thomas Taylor (1995) at the University of Kansas.