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Sounds emitted by plants under stress are airborne and informative

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161–170 of 188 posts

Re: Sounds emitted by plants under stress are airborne and informative

#161
post #18

Does this throw out the whole moral panic about animal welfare? If plants suffer too, isn't it wrong to eat them as well? Or there should be real focus in humane treatment and harvesting them?

I refuse to believe this isn't a troll comment.

unfortunately, I have heard totally normal people on multiple occasions fall back to the "well don't plants feel pain too?" argument

Re: Sounds emitted by plants under stress are airborne and informative

#162

Vegans are going to have to re-evaluate their life choices. It might be much more cruel to harvest a field of soybeans than it is to kill a cow.

this comment says more about your confirmation bias and your ability to understand the information in the article than it does about the life choices of vegans

Re: Sounds emitted by plants under stress are airborne and informative

#163

Earlier quoted context omitted.

If you break a branch, the sound of it breaking informs you that you have broken a branch.

If a branch falls in the forest and there is no-one there to hear it, does it make a sound? https://en.wikipedia.org/wiki/If_a_tree_falls_in_a_forest#:~... . "... majority view of the quantum mechanics community then and arguably to this day is that existence in the absence of an observer is at best a conjecture"

"Observer" is the most unfortunate word physicists could have chosen, though. It gets people all confused about observation mistakenly having something to do with thinking or perception. "Interacter" would have been a more accurate term, but it doesn't sound as sexy.

To wit, yes, the tree makes a sound because the tree is there to hear it.

Re: Sounds emitted by plants under stress are airborne and informative

#166

Earlier quoted context omitted.

If you break a branch, the sound of it breaking informs you that you have broken a branch.

If a branch falls in the forest and there is no-one there to hear it, does it make a sound? https://en.wikipedia.org/wiki/If_a_tree_falls_in_a_forest#:~... . "... majority view of the quantum mechanics community then and arguably to this day is that existence in the absence of an observer is at best a conjecture"

If a tree falls in the forest, all the other trees are there to hear it.

Re: Sounds emitted by plants under stress are airborne and informative

#167
post #90

I am astounded that no one has mentioned "The Sound Machine" by Roald Dahl (1949), in which a scientist invents a machine that makes ultrasonic sounds audible to humans. He discovers that plants scream when cut. You can read it at https://www.newyorker.com/magazine/1949/09/17/the-sound-mach...

I wonder if this is the source of a Jack Handey joke: "If trees could scream, would we be so cavalier about cutting them down? We might, if they screamed all the time, for no good reason."

This reminds me of an Upton Sinclair quote: “was one to believe that there was nowhere a god of hogs, to whine this hog personality was precious. To whome these hog squeals and agonies had meaning?”

Re: Sounds emitted by plants under stress are airborne and informative

#168
post #150

Earlier quoted context omitted.

If the signal is being sent, you can be pretty sure that due to the intrinsic efficiency-maximization that biological systems perform then most likely the mechanism for detecting and acting upon it has been evolved by other organisms, especially for something as fitness-critical as stress.

Sometimes signal is just there regardless. If you hit your tissue hard enough, it becomes blueish for a while (a bruise, a hemorrhage). It may benefit something by accident, but a bruise just can’t stay as pink as the rest of you, due to the physics of the process. (From tfa) Plants exposed to drought stress have been shown to experience cavitation – a process where air bubbles form, expand and collapse in the xylem,…

Maybe this bruise evolved with our social behaviour : most animals skin don't show this, or for higher stress. The bruise is very important in a social envirronment and is a good optimisation for mutual Care.

Re: Sounds emitted by plants under stress are airborne and informative

#169
There was an article I read like a decade ago about some research that when bugs eat a particular tree, the tree would react in two ways: Emit some sort of chemical that hurt or resisted the bug, and emit something (can't remember if it was sound or something pheremone-like) that caused nearby trees of the same species to emit the same chemical, allowing them to proactively protect themselves.

Re: Sounds emitted by plants under stress are airborne and informative

#170
post #150

Earlier quoted context omitted.

If the signal is being sent, you can be pretty sure that due to the intrinsic efficiency-maximization that biological systems perform then most likely the mechanism for detecting and acting upon it has been evolved by other organisms, especially for something as fitness-critical as stress.

Sometimes signal is just there regardless. If you hit your tissue hard enough, it becomes blueish for a while (a bruise, a hemorrhage). It may benefit something by accident, but a bruise just can’t stay as pink as the rest of you, due to the physics of the process. (From tfa) Plants exposed to drought stress have been shown to experience cavitation – a process where air bubbles form, expand and collapse in the xylem,…

>> (From tfa) Plants exposed to drought stress have been shown to experience cavitation – a process where air bubbles form, expand and collapse in the xylem, causing vibrations

> In other words, dry wood cracks.

I don't think it's saying that at all

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