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TFA also acknowledges this: > There could well be many other functions that have since joined in with the sleep cycle (such as memory consolidation), but the
by eutropia 1y ago
TFA also acknowledges this:
> There could well be many other functions that have since joined in with the sleep cycle (such as memory consolidation), but the authors hypothesize that mitochondrial function is the process that underlies all of them. If you need oxygen, then you need sleep!
- deleted 1y ago[deleted]
- hearsathought 1y ago> If you need oxygen, then you need sleep! Do plants sleep? Don't some insects, like flies, live without any sleep?
- mock-possum 1y agoPlants breathe out oxygen, like we breathe out the other one.
- andy99 1y agoThat's true for photosynthesis but don't they still have oxygen respiration (i.e. oxidizing sugar for energy?)
- tingletech 1y agoyes, at night they breath oxygen. Maybe they sleep during the day.
- wongarsu 1y agoBut their cells still consume oxygen during the day, don't they? In sunshine they produce more oxygen than they consume, but the cells are still fundamentally powered by mitochondria oxidizing glucose
- bdamm 1y agoPerhaps different regions of the plant "sleep" at different times? The plant has no need for high response synchronized behavior at all.
- throwawayffffas 1y agoYou still consume oxygen when sleeping.
- SamBam 1y agoPlants respire oxygen continually, day and night. It's a myth that they only respire at night. Like every other organism except for anaerobes (mostly microbes, some fungi) they need oxygen in order to burn fuel for cellular processes. Plant cells are doing things day and night. The origin of the myth is simply that they produce more oxygen via photosynthesis than they respire, and so are net producers of oxygen during the day.
- tingletech 1y agoyes, I meant net.
- throwup238 1y agoThey need oxygen for the mitochondrial electron transport chain to produce ATP. The vast majority of multicellular organisms need oxygen for that reason, and I can count the exceptions on one or two hands (i.e. Pogonophoran tube worms, some anaerobic sponges, a few parasitic helminths).
- sampo 1y agoPlants have chloroplasts that produce oxygen and sugar. But plants also have mitochondria that consume oxygen and sugar and run many of the same metabolic functions as in animals.
- burkaman 1y agoInsects do sleep, the paper we're discussing is a study of flies.
- cubefox 1y agoNo, plants don't sleep, and neither do fungi or single celled organisms. Sleep seems to be a property specifically of animals.
- steeleyespan 1y agoMaybe plants are "always asleep" ?
- lelandfe 1y agoAnd pray they never wake
- SoftTalker 1y agoSome plants do change to a "night" configuration though (closing leaves or petals, etc). Not sure if you could call it sleep.
- wvbdmp 1y agoI would be surprised by any organism that can sense its environment and doesn’t change behaviour at night. The difference is pretty extreme, whether its temperature, light or just all other beings changing what they’re doing. Even if you don’t notice yourself, you’ll probably be affected by second-order effects.
- opello 1y agoThe simplest example that seems like it would be an exception to your criteria would be an amoeba.
- prerok 1y agoBy which criteria? They do respond to daily cycles. How do you know they do not sleep?
- cubefox 1y ago
- jhrmnn 1y agoI think it should have been “If you need oxygen and have a CNS, then you need sleep.” Other tissues can take oxidative break during wakefulness, but since CNS is _generating_ wakefulness, if it takes a break, by construction there is sleep.
- deleted 1y ago[deleted]