What exactly does a tree do once it’s been notified of danger? “Oh shit, I better tree even harder”
this post was submitted on 20 Feb 2025
615 points (98.6% liked)
me_irl
7537 readers
526 users here now
All posts need to have the same title: me_irl it is allowed to use an emoji instead of the underscore _
founded 2 years ago
MODERATORS
Escape
This may explain what happened to the Entwives.
Run away! Run away!
Acacia trees increase tannin level in their leaves. Giraffes don't like the bitterness and stop eating it.
The emitted ethylene will only move with the wind. Giraffes counter that by moving upwind, targeting trees that have not been 'warned'.
Obviously, the trees counter this by always growing downwind.
I see someone's read The Hidden Life of Trees!
Thats crazy cool
It makes like a tree and gets outa there
Makes like a tree and fucks off?
no, Biff, that’s not the joke
I'm not sure about the trees but a bunch of plants release ethylene as a stress response (too much water, not enough water, too much salt, etc), causing fruit to ripen faster likely increasing their chances at successfully reproducing. You can suspend ripening in apples for instance by blocking the ethylene receptors.
Maybe it can like store a little energy or water or smth to try to have a better shot at survival?
Edit: after a quick googling, they do this when an animal starts eating their leaves. Trees that have been warned will increase tannin production to toxic levels, making their leaves less than palatable.
*Acacia
My Dad does that too.
I did-ish, and I'm not even ADHD but I'm probably something on the spectrum and my thing is random plant facts, bitches.
*Arcade
*Arcata
Is that what they mean by trees screaming
I did know that, yes.
And I also searched for the usual coping mechanisms too, just to see what other homies are doing.
Also it's just stupid old tech that wind thing, why not use the internet (ie the mycelium network)? It has worked for others for 100s of millions years.
Isn't that the gas that makes fruit ripen? The one that bananas emit?
My uncle can do that tree thing, kinda.
Warn the other uncles someone is eating him?
That's nice of him.
The other uncles don't move, just become more bitter.
You mean Acacia trees?