1887

Abstract

The facultatively photosynthetic bacterium harbours an unusual light, oxygen, voltage (LOV) domain protein, RsLOV. While showing a characteristic photocycle, the protein lacks a C-terminal output domain, similar to PpSB2 in . Oxygen tension and light quantity are the two factors mainly responsible for controlling the expression of photosynthesis genes in . Two photoreceptor proteins are known to be involved in this regulation: the intensively studied AppA protein and the more recently identified cryptochrome-like protein CryB. Here we show by transcriptome and physiological studies that RsLOV is also involved in the regulation of photosynthetic gene expression. Our data further hint at a connection between RsLOV, carbohydrate metabolism and chemotaxis, as well as with the cellular response to photooxidative stress. RsLOV affects not only blue light-dependent gene expression but also redox-dependent regulation.

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2012-02-01
2022-10-02
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