Arp, T. B., Kistner-Morris, J., Aji, V., Cogdell, R. J. , van Grondelle, R. and Gabor, N. M. (2020) Quieting a noisy antenna reproduces photosynthetic light-harvesting spectra. Science, 368(6498), pp. 1490-1495. (doi: 10.1126/science.aba6630) (PMID:32587021)
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220283.pdf - Accepted Version 3MB |
Abstract
Photosynthesis achieves near unity light-harvesting quantum efficiency yet it remains unknown whether there exists a fundamental organizing principle giving rise to robust light harvesting in the presence of dynamic light conditions and noisy physiological environments. Here, we present a noise-canceling network model that relates noisy physiological conditions, power conversion efficiency, and the resulting absorption spectra of photosynthetic organisms. Using light conditions in full solar exposure, light filtered by oxygenic phototrophs, and light filtered under seawater, we derived optimal absorption characteristics for efficient solar power conversion. We show how light-harvesting antennae can be tuned to maximize power conversion efficiency by minimizing excitation noise, thus providing a unified theoretical basis for the observed wavelength dependence of absorption in green plants, purple bacteria, and green sulfur bacteria.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Cogdell, Professor Richard |
| Authors: | Arp, T. B., Kistner-Morris, J., Aji, V., Cogdell, R. J., van Grondelle, R., and Gabor, N. M. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Molecular Biosciences |
| Journal Name: | Science |
| Publisher: | American Association for the Advancement of Science |
| ISSN: | 0036-8075 |
| ISSN (Online): | 1095-9203 |
| Copyright Holders: | Copyright © 2020 The Authors |
| First Published: | First published in Science 368(6498): 1490=1495 |
| Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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