0:17 The Professor: From what I had previously gathered, these leaves are actually infused with both the nutrients and the photon-capturing proteins and enzymes from a hidden underground network of bioluminescent mushrooms, which supply the necessary ingredients to the plant cells through their mycelia.

In other words, they are literally being fed with glowing fungi essence from below.

Sunny’s Co-activist: Professor calls them “Celestin” and “Lunase”, after the once-powerful ancients of Equestrian past! Pretty cool, huh?