Top Centre: the plants grow in can that is a sterile growth chamber, Top right: selected spores that will germinate and form hyphae, Right : The spores of the fungus of the genus Glomus selected under a microscope and placed on a petri dish Lower: the spores have germinated and grown hyphae Lower to the right: the roots of seedling are placed in contact with the hyphae, Bottom right: after a month the fungus has entered into symbiosis with plant roots, Bottom centre: plants of leek and carrot are now connected in a web net thanks to the hyphae, Lower left: two myrtle seedling on-line: the net was formed among the roots of the two plants, Upper left: Between two leeks is visible a net of hyphae that connects the roots