From what I understand it’s a pheromone(?) reaction that causes the grass to send water and nutrients lower down into the plant, so they can more easily survive being grazed on / lawnmowered.
There are evolutionary mechanisms that let many plants excrete foul tasting or smelling compounds when they’re alerted to nearby danger, from their other leaves being eaten, or those nearby that release warning compounds.
Plants also work in tandem with fungus and other microbial life to sort of message needs to get support for survival, possibly defense as well.
From what I understand it’s a pheromone(?) reaction that causes the grass to send water and nutrients lower down into the plant, so they can more easily survive being grazed on / lawnmowered.
There are evolutionary mechanisms that let many plants excrete foul tasting or smelling compounds when they’re alerted to nearby danger, from their other leaves being eaten, or those nearby that release warning compounds.
Plants also work in tandem with fungus and other microbial life to sort of message needs to get support for survival, possibly defense as well.