Leaf colour in autumn

Jon Monroe monroejd at jmu.edu
Wed Oct 16 08:23:20 EST 1996


Gunnar Fridborg recently raised an interesting question concerning why
leaves of some species turn red.  HOW they do it and WHAT the red pigments
are (anthocyanins) is well known but I have never heard a testable
evolutionary reason for WHY certain leaves turn red.  I'm scheduled to do a
spot on the local TV news tonight on "why leaves turn colors" and, while I
feel that I understand what is known and what isn't fairly well, I would
feel happier if I could confirm the latter!  Is it still true that nobody
knows?

Thanks!

Jon

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