Chlorophyll and Green Light

ceumb at STOLAF.EDU ceumb at STOLAF.EDU
Fri Nov 1 09:22:15 EST 1996

Dear Plant Edders,

A friend asked me a question the other day about chlorophyll.  He was
wondering why blue and red but not green were absorbed.  After some
reading and chatting with colleagues I came to the short answer that
chlorphyll was so efficient with red and blue that there was no
evolutionary advantage in absorbing green and/or that changes needed
to absorb green would mean loss of efficiency absorbing blue or red.

Does this answer make any sense esp. since some bacteria use rhodopsin
to capture green light for photosynthesis?

Charles Umbanhowar
St. Olaf College
ceumb at

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