Heliobacteria

Heliobacteria
Scientific classification Edit this 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.

  1. ^ [Madigan M T, Martinko J M, Dunlap P V, Clark D P. (2009). Brock Biology of Microorganisms 12th edition, p. 453-454].
  2. ^ 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.
  3. ^ 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.
  4. ^ 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.
  5. ^ Cite error: The named reference :0 was invoked but never defined (see the help page).