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The Real Reason Leaves Change Color In the Fall
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- Опубликовано: 23 окт 2015
- You've probably heard that leaves of deciduous trees change color in autumn because they lose their green chlorophyll molecules, allowing the underlying yellow and orange pigments to shine through. However, this doesn’t explain why the leaves change color in the first place.
LEARN MORE
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To learn more about this topic, start your googling with these keywords:
- Leaf senescence
- Chlorophyll
- Carotenoid
- Anthocyanin
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CREDITS
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Peter Reich | Script Writer
Henry Reich | Script Writer, Narrator and Director
Ever Salazar | Illustration, Video Editing and Animation
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REFERENCES
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Hoch, W. A., Singsaas, E. L., & McCown, B. H. (2003). Resorption protection. Anthocyanins facilitate nutrient recovery in autumn by shielding leaves from potentially damaging light levels. Plant Physiology, 133(3), 1296-1305.
Feild, T. S., Lee, D. W., & Holbrook, N. M. (2001). Why leaves turn red in autumn. The role of anthocyanins in senescing leaves of red-osier dogwood. Plant physiology, 127(2), 566-574.
"the world prettiest recylcing plants"
PUNNNN CITTTTYYYYYYYYY
+Alyssa Sipe Is the pun supposed to be something to do with recycling plan?
a recycling plant? Like recycling factory.. This pun is shit
Misclickable don't listen to that downer, this pun is beautiful and yes it's like a recylcing factory.
Alyssa Sipe Ahh... I get it now. Thanks :) .
Misclickable you bet
The visualization of the green chlorophyll molecules and their yellow counterparts was done really well! Clever way of including the actual organic molecules and their color transition.
I see what you did there.
Sorry, you didn't leaf me any option..
Chemistryisthegame lol
Supreme Science ya leaf me hanging..
Laef
Supreme k Science us
B tad yahya waloni
gods, that pun...
Go home minuteearth, you're not my dad
"Gods"
vandalman8
...yeah?
+vandalman8 "By the nine divines!"
+Darasilverdragon The awkward moment your father suddenly comes home a few minutes after you say that...
+vandalman8 the old gods and the new
Thank you for this! A few years ago, I read on Wikipedia that the reason for the anthocyanins was nitrogen transfer. I really didn't know what it was talking about. I had an idea, but wasn't sure, but this certainly cleared it up :)
Those oxygen molecules at 0:56 are so adorable, I cant live without them.
Dat Pun tho. Leaf and go home, Minute Earth, you're trunk.
*FROM CROWD* BOOOOOO!
@@islandprincess714 *YEEEEEEEEEEEEESS
I felt drunk reading this comment section but it some how makes sense
Ooooh I see what you did there.
HAHAHAHAHAHA SO FUNNY HAHAHAHAHUEHUHEUHEUHEUHEUEH COUGH
+qqq1701 i don't get the pun, pls explain
+Mr.Halogames recycling "plants".
Levi Langer OHHHHHHHHHHHHHHHHHH I CAN SEE THE FUTURE NOW
+qqq1701 MMMMMMMMMM FUUUNNNYY JOOOKE!!
"Recycling... plants"
HAHAHAHHAHAHAHAHAHAHHAFUNNYJOKEHAHAHAHAHAHAHAH
HAHAAHAHHAHAHAHHAHAHAHA
MMM, FUNNEEEE JOAK
+patu8010 FUUUUUUUUUUUUUUUUUUUUUNNNNNEEEEEEEEEEEEEEEEEEE JOOOOOOOOOOOOOKKKKKKE!!!!!!!
+Kevin AnimalCrossing I dont get it
George D.
Yeah. Good Channel.
I just realized after re-watching the pun at 1:07
+Max Jiang What's the pun?
+Marshall Mannella Hint: at 1:07: read, don't listen.
+Marshall Mannella Recycling plant. ....RECYCLING PLANT!
I don't get it.
George Kromidas The title of the paper where the chlorophyll breaks down is called "Safetree Manual"
We had a winter here when in March the temperature went up over 20 degrees for about 3 weeks. The plants started budding but those were killed off in April when the temperature fell again below freezing and it snowed until it normally stops more than a month later. It must've been very hard on the trees... Poor guys :P
Leave the recycling plants!
+Aidan A leaf them?
+Aidan A LEAVE BRITNEY ALONE!
+Robasiewicz LEAV HER ALONE
Bravo on that pun. Bravo.
Its Fall right now, and I love it. Everything is so pretty. To bad it only lasts for a couple of weeks. Thanks for the video. I learned new things.
Interesting! Would be great to see a similar video on the leaves of other plants (both as they grow and as they dry upp, e.g. if you forget to water a plant for a long time)
I love autumn colors!
I have watched quite a bit of Minute Earth. This is the best pun yet. Hats off.
"Oxygen molecule"
Noooo!
Aside from that, I think this is another great video.
Nascent oxygen?
It's been a LONG TIME since I heard a good pun. Thank you
With all my heart I thank you for the apt, positive and humorous quips at the end of each video. Total Happy Making.
Beautification of spring bring ones hearts joy, lovers of colors sings of the beauty of the world,. Fall colors trees, Oh what a beauty to see , makes the world a pleasant thing to behold. Before winter takes a toll.
And now I know why all the trees change in the fall. I know you were on my side even when I was wrong
a few months ago i have watch bright side video on why leaves change color in the winter and i blieve that until i see your video
Guess I kind of wondered why some turned red before turning yellow but never looked it up. I'll take that simple explanation for now, thanks!
I'm confused about something though, Wouldn't the leaves they drop fall above their roots anyway? So as their break down the ground above them will be fertilised and when it rains (or the snow melts) they could re-absorb the nitrogen through their roots. I'm guessing they probably just do both things to recover the largest % of nutrients they can.
i mean that might work if it wasn't windy but i feel like it usually is in the fall/winter time
@@crystalmolina2533 That comment was seven years old xD
Wow, that was incredibly informative yet concise. Thanks very much.
Side note: Recycling plants -- Get it? Get it? I'll be here all week...
lol Love the pun
What I love about this channel is that it always tells you something you don't know. It takes a basic question like 'Why do leaves change color in the fall?' and gives you more than the grade-school textbook reason.
You expect some guy to come out and say 'THEY'RE ACTUALLY THAT COLOR ALL ALONG, DIDJA KNOW? DIDJA? HUH?'
But instead you actually learn something new.
Safetree Manual. Damn. That's so brilliant.
1:41 WoAh HOLY HECK THOSE LEAVES ARE BRIGHT
What about the pink tree leaves in Asia?
Probably just a less intense version of the umbrella one
+MH DOOM Those are Sakura trees - Cherry trees.
+MH DOOM MF DOOM!
NRG Player metal fingers DOOM
Those are flowers and that happens in the spring, not fall.
The autumn leaves show how beautiful it is to let the dead things go.
Its not recycling, because they dump all those damn leaves on my lawn!!!
My lawn is a landfill for leaves.
+drink15 Just leave the leavesn alone and nature will take care of that.
+drink15 Why don't you, instead of doing whatever you're doing to the land you own that has created this conflict between you and trees, employ the annual rain of Nitrogen and Phosphorous in the useful production of food?
+m8e leaves on your lawn will kill the grass.
I for one think we should get rid of these high-maintenance grass lawns and go for something more self-sufficient and low maintenance.
+drink15
That's still recycling. The nutrients from the fallen leaves goes into the ground and back into the plants.
+RainAngel111 like.. concrete? Lol
I hadn't thought about how wasteful it would be if the trees couldn't extract any of the nutrient backs, and never knew the stuff in the leaves could harm the trees. Learned something new! Yay, science!
I really enjoyed this video! Thank you bringing amazing and insightful content!
Trees in autumn are the most beautiful. I wish they were like this all year long :(
I have also read that trees that turn red also have fewer aphids problems. Something to do with the trees becoming invisible to the egg laying members of the aphid herd.
every single pun... gets me every time
Basically the trees say "Aight fam summer is over, lemmie get dem nutrients up out 'chall fam. It's finna get cold & I ain't goin."
Cool!
Fall in a deciduous forest is one of nature’s most beautiful shows
Awesome....I need to sit my kids down with this one tonight!
My teacher showed us this, it was really helpful for my report.
That was brill! Thank you guys! :)
Nice one. I was just talking about this with my daughter, and seeing it as a video is great.
She has a video request: how can an igloo made of ice keep people warm?
To put it simple, it traps the warmth from the people’s body keeping the igloo warm in the process
Breaking down chlorophyll molecules little by little, in turn gives bright range of color during fall. They still do break down chlorophyll but the reason they do it is to protect itself while they transport their excess nutrients back to the trunk. Clever there (not that trees have brains, but have been programmed to do this).
I love red trees in the fall; I have a red maple growing my the neighborhood and I love the color. It's just amazing.
+spartan1010101 Dig it out tonight and take it to your backyard. Perfect crime
Juan Pablo Morbelli I would if it wasn't like 50+ft tall lol it's a beautiful tree.
+spartan1010101 then grab some seed pods from it.
Paul Mahoney I'll be long gone before They can grow into the beautiful tree I want it to be. Hopefully I'll be moved out by then lol
+spartan1010101
Do some future generation a favor, plant trees. Someone did it for you, pay it forward.
That 50% recycling of resources in the leaves in fall is merely the direct recovery percentage. Once the leaves fall to the ground, break down into detritus, and are metabolized by the bacteria and fungal colonies at the base of the tree and along its roots, a tree recovers even more of its spent resources, indirectly!
Your passion for plants minute earth man makes me so happy!
regardless, i love the changes 🌲🌳🍁🍂🍂 love how nature works!
But can you explain why leaves fall down and not upwards?!
Chekmate atheists!
+SuperPolentaman um... gravity?
+Shad0wmeld Gaming Its too late, they already said checkmate
+Koltronn It's too late,
illegitimacy of humiliation has been proven multiple times by now
+SuperPolentaman Living things falls down due to evolution.
Animals that falled up into space couldn't breed and spread their genes.
That's why there is no lighter than air animals.
+m8e air is actually really heavy, in one room it can weigh as much as a brick wall
These videos get me through school
Nature as it all work out trees retain minerals- nutrients from their leaves before they shed them, so the fallen leaves don't contain a lot of goodness but help the soil retain condition in the form of calcium, minerals in small amounts by providing food for worms and bacteria thus replenishing the soil great stuff.
great, i love science. never learned this in intro ecology lol
Trees are so mightily complex and responsive to their environments I wonder why we don't think they're intelligent.
It would be cool if you talked about mycorrhiza. The amazing world of the interaction between mycelia and roots.
He did talk about it.
But not in detail.
+Koray Acar I just remember one video where he mentioned something like: "oh there's fungi that help plants get nutrients", but there's way more to that.
That is funny prettiest recycling PLANTS! Hahahahaha! I like that joke at the end of the video! :P
Who could dislike this, I mean come on people
Fall is sooo beatiful!!
So many wonderful colours! 🍂🍁🍂🍁🌧☔️
"They're not even normal," the little girl whispered. "Look Ma', those men have gills for ears."
I thought it was the accessory pigments, such as carotenoids, are responsible for the changing g of the leaves because they reflect more of the yellow and orange color.
Soooo.. How less effective is red at absorbing sunlight than green? Does the benefit largely outweigh the resource cost of producing the pigments?
I HAVE BEEN WONDERING ABOUT IT!!! thank you for answering my question.
leafs change color because when they're brown it means that the leaves are cooked enough by the sun to be eaten
Everyone watching this video pretending they know what "deciduous" means
+NemRaps you weren't taught the main difference between deciduous and coniferous trees in school? Or are you simply implying that the majority of people on this channel are uneducated?
@nemraps deciduous mean that leaves fall bro are you dumb?
@@Smac_Ker For some of us, English is not their first language. We were taught the difference between deciduous and coniferous trees in school, but in our native language, not in English.
I live in the tropics but even I know about them . We have deciduous trees too !
love the videos. always left with a smile on my face.
Most of your videos make my smile.
I now understand my kid's questions are not always nonsense!!!!
“Recycling plants”... Love it.
Photovoltaic chlorophyll at 0:40 is excellent.
as someone ho's living in the south hemisphere this was nice to watch, like going to disney world here, never gonna happen lol
Tree science is so dope!!
Trees have unlimited growth because North countries are cold and snow fall happens so this is why trees shed leaves during winter and grow that the same amount every year . However where it is warm like amazon over there trees grow unlimited.
How to protect green in the leaves for a period of 1 year for which do you have any technology or chemicals.
You had a missed opportunity to call this video “Why trees are Gryffindors in the fall”
Nature is indeed beautiful
Why would the tree need to take the nutrients from the leaves when surely they can absorb the nutrients back from the rotting leaves that have fallen off?
So, if one of those trees was put on the equator would they still loose the leaves? On the Equator there are no seasons, just perpetual summer.
Wonderful pun at the end.
love minute earth thank you for making us animations
the animations are as usual beautiful
gosh those insanely red leaves are so pretty...
inb4 "I'm a biology major and this video is so inaccurate SHAME ON MINUTEEARTH" comments
as a deciduous tree, i appreciate the video
1:40 that's one of my favorite colors..
It's autumn! AUTUMN!!!
I know that you last video about this has something wrong, This is nice to know. NICE VIDEOS! Next fall, what would be the new discovery?
Oh it may look like that's why they change and fall, but the *real* reason is they don't fall at all, they *jump* off before the squirrels can get 'em!
How does a tree 'know' when to start doing this? Is this a temperature sensor? Or like a measure of sunlight distribution?
Interesting. Wouldn't it be easier to just say the chlorophyll breaks down into molecules that don't absorb as many wavelengths and so those unabsorbed wavelengths end up getting reflected? I wonder what the relationship between the wavelength-scattering due to the changing angle of sunlight through the atmosphere and the color-changes in the leaves/chlorophyll is. It would be interesting to discover a chemical complementarity between scattering-angle and electron-wavelengths within the decaying chlorophyll. Autumn leaves would effectively turn out to be the photochemical analog of a colorful sunset where the colors also change due to the changing angle of the sun as it crosses the horizon.
Wow we were just learning about this in school 3 days ago.
Autumn is rlly beautiful. Too bad i live in a tropic country.
Seriously love MinuteEarth
45% are people talking about the puns.
45% are people saying that's a pun.
9% are people who doesn't know what a pun is, and it just rhymes.
1% are people who is saying some of em are not a pun
But what starts the process? is it temperature or lack of sunlight or something else?
But why do they begin to reabsorb the P and N into the branches etc. Is it due to the lower of light intensity or lowering temperatures?
I love Henry. Not ashamed to say that.
I learned alot, great show!
I gave the last joke a 10 for cleverness, but a 3 for laughs
so if a tree looses branches in the winter is it "costlier" than in the summer?
cool
"...the world's prettiest recycling plants."
pun CIIIIIIIIIIIIIIIIIIIIIIIIITYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY