This sort of thing has been known for a while -- it falls under the category of "mycorrhiza". Indeed, the Wikipedia entry on that refers to a whole article ded

This sort of thing has been known for a while -- it falls under the category of "mycorrhiza". Indeed, the Wikipedia entry on that refers to a whole article dedicated to orchids: https://en.wikipedia.org/wiki/Orchid_mycorrhiza https://en.wikipedia.org/wiki/Orchid_mycorrhiza