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| Heliobacteria | |
|---|---|
Scientific classification 
| |
| Domain: | Bacteria |
| Phylum: | Bacillota |
| Class: | Clostridia |
| Order: | Eubacteriales |
| Family: | Heliobacteriaceae Madigan & Asao 2010 |
| Genera[1] | |
Heliobacteria are a unique subset of prokaryotic bacteria that process light for energy. Distinguishable from other phototrophic bacteria, they utilize a unique photosynthetic pigment, bacteriochlorophyll g and are the only known Gram-positive phototroph.[2] They are a key player in symbiotic nitrogen fixation alongside plants, and use a type I reaction center like green-sulfur bacteria.[3][4]
RNA trees place the heliobacteria among the Bacillota.[5] They have no outer membrane and like certain other Bacillota (Clostridia), they form heat-resistant endospores, which contain high levels of calcium and dipicolinic acid. Heliobacteria are the only Bacillota known to be phototrophic.
- ^ [Madigan M T, Martinko J M, Dunlap P V, Clark D P. (2009). Brock Biology of Microorganisms 12th edition, p. 453-454].
- ^ Sattley, W. Matthew; Swingley, Wesley D. (2013-01-01). "Properties and Evolutionary Implications of the Heliobacterial Genome". Advances in Botanical Research. 66: 67–97. doi:10.1016/B978-0-12-397923-0.00003-5. ISBN 9780123979230. ISSN 0065-2296.
- ^ Jagannathan, B.; Golbeck, J.H. (2013-01-01). "FX, FA, and FB Iron–Sulfur Clusters in Type I Photosynthetic Reaction Centers". Encyclopedia of Biological Chemistry. pp. 335–342. doi:10.1016/B978-0-12-378630-2.00184-5. ISBN 9780123786319.
- ^ Jagannathan, B.; Golbeck, J.H. (2009-01-01). "Photosynthesis: Microbial". Encyclopedia of Microbiology. pp. 325–341. doi:10.1016/B978-012373944-5.00352-7. ISBN 9780123739445.
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