Endo vs Ecto fungi, which one reigns supreme?

There are two primary types of mycorrhizal fungi, endo and  ecto, both are mycelium but associate with different types of plants while performing similar functions. Endomycorrhizae (or Vesicular Arbuscular Mycorrhizae) are symbiotically associated with about 90% of the plant kingdom. This coevolution began 350–460 million years ago and allowed vascular plants to begin growing on land. Endomycorrhizae physically penetrate plant roots and create an intercellular attachment in the form of branched structures called arbuscules. Arbuscules within root cells provide an extensive surface area for the exchange of nutrients such as glucose or nitrogen through the cell membrane. Mycelia from endomycorrhizae extend from the plant roots into the surrounding soil, gathering…