The Family Chloroflexaceae

Hanada, Satoshi; Pierson, Beverly K.

doi:10.1007/0-387-30747-8_33

Cited by 70 publications

(73 citation statements)

References 111 publications

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“…Members of the Chloroflexales also differ from each other in the structure of their light-harvesting complexes. In Roseiflexaceae species the antenna complex contains bacteriochlorophyll a only, whereas one of the Chloroflexaceae representatives contains bacteriochlorophyll c (Hanada & Pierson, 2006). Spectral analysis of cell-free extracts revealed that the reaction centre of O. trichoides DG6 contains bacteriochlorophyll a, which has maximal absorbance at 860 nm.…”

Section: Spectral Analysis Of O Trichoides Dg-6 Bacteriochlorophyllsmentioning

confidence: 99%

“…The representatives of the family Chloroflexaceae are thermophilic photo-organotrophs capable of growing photolithotrophically. Besides this, they are able to grow in aerobic chemo-organotrophic conditions (Hanada & Pierson, 2006). Autotrophic CO 2 assimilation by the representatives of family Chloroflexaceae (Chloroflexus aurantiacus) is performed through the 3-hydroxypropionate cycle (Herter et al, 2002;Zarzycki et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Bacteriochlorophyll c of the light-harvesting antenna complex in the species belonging to Chloroflexineae is located in chlorosomes, which are similar to those of green sulfur bacteria (GSB) (Hanada & Pierson, 2006). The chlorosome in GSB is bound to the reaction centre in the cytoplasmic membrane through the basal plate and the Fenna-Matthews-Olson protein (FMO).…”

Section: Introductionmentioning

confidence: 99%

“…Various species of GSB synthesize bacteriochlorophylls a, b, c, d, e and g . FAP species belonging to the suborder Chloroflexineae possess bacteriochlorophylls a and c, whereas species of the Roseiflexineae synthesize bacteriochlorophyll a only (Hanada & Pierson, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Reconstruction of bacteriochlorophyll biosynthesis pathways in the filamentous anoxygenic phototrophic bacterium Oscillochloris trichoides DG-6 and evolution of anoxygenic phototrophs of the order Chloroflexales

et al. 2015

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It is commonly accepted that green filamentous anoxygenic phototrophic (FAP) bacteria are the most ancient representatives of phototrophic micro-organisms. Modern FAPs belonging to the order Chloroflexales are divided into two suborders: Chloroflexineae and Roseiflexineae. Representatives of Roseiflexineae lack chlorosomes and synthesize bacteriochlorophyll a, whereas those of Chloroflexineae synthesize bacteriochlorophylls a and c and utilize chlorosomes for light harvesting. Though they constitute a small number of species, FAPs are quite diverse in their physiology. This bacterial group includes autotrophs and heterotrophs, thermophiles and mesophiles, aerobes and anaerobes, occupying both freshwater and halophilic environments. The anaerobic mesophilic autotroph Oscillochloris trichoides DG-6 is still not well studied in its physiology, and its evolutionary origin remains unclear. The goals of this study included identification of the reaction centre type of O. trichoides DG-6, reconstruction of its bacteriochlorophyll biosynthesis pathways, and determination of its evolutionary relationships with other FAPs. By enzymic and genomic analysis, the presence of RCII in O. trichoides DG-6 was demonstrated and the complete gene set involved in biosynthesis of bacteriochlorophylls a and c was established. We found that the bacteriochlorophyll gene sets differed between aerobic and anaerobic FAPs. The aerobic FAP genomes code oxygen-dependent AcsF cyclases, but lack the bchQ/bchR genes, which have been associated with adaptation to low light conditions in the anaerobic FAPs. A scenario of evolution of FAPs belonging to the order Chloroflexales is proposed.

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Section: Spectral Analysis Of O Trichoides Dg-6 Bacteriochlorophyllsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reconstruction of bacteriochlorophyll biosynthesis pathways in the filamentous anoxygenic phototrophic bacterium Oscillochloris trichoides DG-6 and evolution of anoxygenic phototrophs of the order Chloroflexales

et al. 2015

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“…Cfl. aurantiacus can grow phototrophically under anaerobic conditions or chemotrophically under aerobic and dark conditions [4]. During phototrophic growth of Cfl.…”

Section: Introductionmentioning

confidence: 99%

Functional Genomics of Anoxygenic Green Bacteria Chloroflexi Species and Evolution of Photosynthesis

Tang¹

2012

Biochemistry

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Green Nonsulfur Bacteria

Overmann

2008

Encyclopedia of Life Sciences

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Formerly known only as a group of gliding filamentous bacteria capable of anoxygenic photosynthesis, the green nonsulfur bacteria (phylum Chloroflexi) now are also known to comprise numerous chemotrophic bacteria of diverse ecophysiology and phylogeny. The most conspicuous representatives are the green‐ or orange‐coloured thermophilic bacteria which form dense microbial mats in hot springs. They are typical photoorganoheterotrophs and well adapted to their changing environment by their gliding motility, tactic responses and versatile physiology. Culture‐independent studies have revealed a plethora of novel, unknown 16S ribosomal ribonucleic acid (rRNA) gene sequence types, indicating that the diversity of these bacteria in the natural environment is only marginally understood. Nonphotosynthetic members of the Chloroflexi occur in freshwater, soil and decaying organic matter, as well as methanogenic granular sludge and other wastewater treatment systems where they seem to aid in granule formation and participate in carbohydrate turnover.

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The Family Chloroflexaceae

Cited by 70 publications

References 111 publications

Reconstruction of bacteriochlorophyll biosynthesis pathways in the filamentous anoxygenic phototrophic bacterium Oscillochloris trichoides DG-6 and evolution of anoxygenic phototrophs of the order Chloroflexales

Reconstruction of bacteriochlorophyll biosynthesis pathways in the filamentous anoxygenic phototrophic bacterium Oscillochloris trichoides DG-6 and evolution of anoxygenic phototrophs of the order Chloroflexales

Functional Genomics of Anoxygenic Green Bacteria Chloroflexi Species and Evolution of Photosynthesis

Green Nonsulfur Bacteria

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