Figure 2: Heat map showing the frequency of studies in MycoDB according to unique plant host and fungal genus combinations and their phylogenetic relationships.

From: MycoDB, a global database of plant response to mycorrhizal fungi

Figure 2

Larger circles indicate a larger number of studies that exist in MycoDB for that unique plant species-fungal genus pair. The left side shows a composite phylogenetic tree for plant species, and a composite phylogenetic tree for mycorrhizal fungal genera is on the top of the graph. Different colors indicate plants grown in association with different mycorrhiza types (blue=EM fungi, red=AM fungi, black=either AM or EM).