Early Evolution of Photosynthetic Water Oxidation

Early Evolution of Photosynthetic Water Oxidation

January 11, 2018

Address

727 E. Tyler St.
Tempe, AZ 85287

Location

Biodesign Institute, Auditorium

Date and Time

January 18, 2018, 4:00 pm (Length: 1 hour 0 minutes)

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Presented by

Tanai Cardona, Professor of Natural Sciences, Imperial College London

When and how photosynthesis originated are questions that still remain unanswered. It is generally accepted that anoxygenic photosynthesis predates oxygenic photosynthesis by a long time, with various estimates ranging from several hundred million years to more than a billion years. Tanai Cardona will show how the evolution of the photochemical reaction centers hints towards the possibility that such a well-accepted scenario may not be completely right. Instead, I will present a few arguments that would seem to indicate that the origin of photosynthetic water oxidation traces back to some of the earliest events in the evolutionary history of photosynthesis. If these arguments turn out to be correct, it would mean that primordial forms of oxygenic photosynthesis are as old as early forms of anoxygenic photosynthesis.

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