Science

The Real Reason Leaves Change Color In the Fall

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Want to learn more about the topic in this week’s video? Here are some keywords to get your googling started:
Leaf senescence, chlorophyll, carotenoid, anthocyanin
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Credits:
Script Writer: Peter Reich and Henry Reich (twitter:@MinutePhysics)
Video Illustrator: Ever Salazar (twitter:@eversalazar)
Video Director: Henry Reich
With Contributions From: Kate Yoshida (twitter:@KateYoshida), Emily Elert (twitter:@eelert) and Alex Reich (twitter:@alexhreich)
Music by: Nathaniel Schroeder: http://www.soundcloud.com/drschroeder
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References:

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.

Image Credits:
Maple Tree – William Warby
Maple Tree

Red Maple Tree – John Brueske
http://www.shutterstock.com/pic-28786426/

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