Volume 207, 2018

Adaptation of Rhodopseudomonas acidophila strain 7050 to growth at different light intensities: what are the benefits to changing the type of LH2?

Abstract

Typical purple bacterial photosynthetic units consist of light harvesting one/reaction centre ‘core’ complexes surrounded by light harvesting two complexes. Factors such as the number and size of photosynthetic units per cell, as well as the type of light harvesting two complex that is produced, are controlled by environmental factors. In this paper, the change in the type of LH2 present in the Rhodopsuedomonas acidophila strain 7050 is described when cells are grown at a range of different light intensities. This species contains multiple pucBA genes that encode the apoproteins that form light-harvesting complex two, and a more complex mixture of spectroscopic forms of this complex has been found than was previously thought to be the case. Femto-second time resolved absorption has been used to investigate how the energy transfer properties in the membranes of high-light and low-light adapted cells change as the composition of the LH2 complexes varies.

Graphical abstract: Adaptation of Rhodopseudomonas acidophila strain 7050 to growth at different light intensities: what are the benefits to changing the type of LH2?

Associated articles

Article information

Article type
Paper
Submitted
26 Aug 2017
Accepted
13 Oct 2017
First published
18 Oct 2017
This article is Open Access
Creative Commons BY license

Faraday Discuss., 2018,207, 471-489

Adaptation of Rhodopseudomonas acidophila strain 7050 to growth at different light intensities: what are the benefits to changing the type of LH2?

A. T. Gardiner, D. M. Niedzwiedzki and R. J. Cogdell, Faraday Discuss., 2018, 207, 471 DOI: 10.1039/C7FD00191F

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