2015-10-24

[public] 1.22M views, 26.8K likes, dislikes audio only

MinuteEarth

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

Nathaniel Schroeder | Music

Our staff: Alex Reich, Peter Reich, Emily Elert, Ever Salazar, Kate Yoshida, and Henry Reich

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OTHER CREDITS

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Maple Tree - William Warby

https://www.flickr.com/photos/wwarby/5130990917/in/gallery-84329238@N02-72157631555877435/

Red Maple Tree - John Brueske

http://www.shutterstock.com/pic-28786426/

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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.