Light-harvesting mechanism of bacteria exploits a critical interplay between the dynamics of transport and trapping

Felipe Caycedo-Soler, Ferney J. Rodríguez, Luis Quiroga, Neil F. Johnson

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Light-harvesting bacteria Rhodospirillum photometricum were recently found to adopt strikingly different architectures depending on illumination conditions. We present analytic and numerical calculations which explain this observation by quantifying a dynamical interplay between excitation transfer kinetics and reaction center cycling. High light-intensity membranes exploit dissipation as a photoprotective mechanism, thereby safeguarding a steady supply of chemical energy, while low light-intensity membranes efficiently process unused illumination intensity by channeling it to open reaction centers. More generally, our analysis elucidates and quantifies the trade-offs in natural network design for solar energy conversion.

Original languageEnglish (US)
Article number158302
JournalPhysical Review Letters
Volume104
Issue number15
DOIs
StatePublished - Apr 16 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Light-harvesting mechanism of bacteria exploits a critical interplay between the dynamics of transport and trapping'. Together they form a unique fingerprint.

  • Cite this