PMID: 8952943Apr 1, 1996Paper

Heliophilum fasciatum gen. nov. sp. nov. and Heliobacterium gestii sp. nov.: endospore-forming heliobacteria from rice field soils

Archives of Microbiology
J G OrmerodMichael T Madigan

Abstract

Two new taxa of phototrophic heliobacteria are described: Heliobacterium gestii sp. nov. and Heliophilum fasciatum gen. nov. sp. nov. Both organisms were isolated from dry paddy soils. Cells of H. gestii were motile spirilla; cells of H. fasciatum formed cell bundles that were motile as units. Both organisms produced endospores; H. gestii endospores contained dipicolinic acid and elevated levels of calcium. As with other heliobacteria, bacteriochlorophyll g was produced in both organisms and no intracytoplasmic photosynthetic membranes were observed. Growth of H. gestii and H. fasciatum occurred under both photoheterotrophic and chemotrophic conditions; nitrogen fixation also occurred in both organisms. H. gestii and H. fasciatium showed a phylogenetic relationship to the "low GC" line of gram-positive Bacteria, but H. fasciatum was distinct from H. gestii and all other heliobacteria. The ability of H. gestii and H. fasciatum to form endospores might be a significant ecological advantage for survival in their rice soil habitat.

Citations

Apr 22, 2006·Extremophiles : Life Under Extreme Conditions·Marie AsaoMichael T Madigan
Apr 26, 2007·Photosynthesis Research·Mark Heinnickel, John H Golbeck
Jan 23, 2010·Photosynthesis Research·Marie Asao, Michael T Madigan
Feb 5, 2010·Photosynthesis Research·W Matthew Sattley, Robert E Blankenship
May 30, 2001·FEMS Microbiology Letters·L K Kimble-Long, M T Madigan
Feb 1, 2003·Archives of Microbiology·Shinichi TakaichiMichael T Madigan
Jan 26, 2005·FEMS Microbiology Letters·Jigjiddorj Enkh-AmgalanTatsuji Seki
Apr 22, 2021·International Journal of Systematic and Evolutionary Microbiology·John A KyndtJohannes F Imhoff

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