Rhodobacteraceae

Rhodobacteraceae

The Rhodobacteraceae are a family of proteobacteria, specifically belonging to the class Alphaproteobacteria. They are gram-negative, aerobically respiring, and rod-shaped. The family is named after the genus Rhodobacter, which is known for its purple pigmentation.

Characteristics

Members of the Rhodobacteraceae family are known for their metabolic versatility. They are capable of photosynthesis, but unlike plants, they do not produce oxygen. Instead, they use bacteriochlorophyll a or b, along with various carotenoids, to capture light energy. This process is known as anoxygenic photosynthesis.

Ecology

Rhodobacteraceae are found in a variety of environments, including marine, freshwater, and terrestrial habitats. They play important roles in the carbon cycle and nitrogen cycle, and some species are also involved in the sulfur cycle.

Genera

The Rhodobacteraceae family includes several genera, such as Rhodobacter, Rhodovulum, Rhodobaca, Rhodothalassium, and Rhodopila. Each of these genera has unique characteristics and ecological roles.

Medical relevance

While Rhodobacteraceae are primarily environmental bacteria, some species have been associated with human disease. For example, Rhodobacter sphaeroides has been implicated in cases of endocarditis and septicemia.

See also

• Proteobacteria
• Bacteriochlorophyll
• Anoxygenic photosynthesis

References

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