Roseibium marinum is a Gram-negative, aerobic and halophilic bacterium from the genus Roseibium which has been isolated from seawater from the Yellow Sea in Korea.
Roseibium marinum is chemoheterotrophic, requiring organic matter for growth. Fermentation has not been observed, either in the presence of oxygen (under aerobic conditions) or under anaerobic conditions. Under anaerobic conditions (in the absence of oxygen), it can grow through denitrification.
It belongs to the aerobic anoxygenic phototrophic bacteria. These bacteria use light as an additional source of energy when nutrients are scarce or oxygen levels are low. Unlike anaerobic anoxygenic phototrophs, aerobic anoxygenic phototrophic bacteria produce bacteriochlorophyll a in the presence of oxygen. They have a quinone-like reaction centre and produce a range of carotenoids, which give them their characteristic pink or orange colour.Stevens, A. et al. (2024) Microbial Physiology. 1st edn. ASM Press. Available at: Perlego(Accessed: 18 November 2025).
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