Trees use fungal networks to kill other plants!

And to do all sorts of other more friendly things. Here is an interesting link. http://www.bbc.com/earth/story/20141111-plants-have-a-hidden-internet

Excellent article, Gilbert. Good point about secret assassinations. The more we learn about plants and animals, the more we realize that nature/God has the real plan, and if we can try to follow it and understand it, we'll have it more going on.
John S
PDX OR

Your link led me down a rabbit hole of other interesting articles. Some of them are even permaculture relevant (Mayan down fall, parasitic wasps, few others)