[Rockhounds] OT: Blazes of light reveal how plants signal danger long distances

[John Dach]

Willows, when attacked by insects, emit pheromones that are carried down wind to other willows and that causes the downwind willows to increase alkaloid production to help limit or stop the insect attack…..  So much we do not know about all sorts of stuff!!!!!!!!!!

John D.


On Sep 14, 2018, at 3:04 PM, Axel Emmermann <axel.emmermann at telenet.be<mailto:axel.emmermann at telenet.be>> wrote:

No, they increase the concentration of noxious-tasting (for caterpillars)
compounds in their sap.
Oddly enough, that works!

Axel