The iron-oxidizing proteobacteria

Hedrich, Sabrina; Schlömann, Michael; Johnson, D. Barrie

doi:10.1099/mic.0.045344-0

Cited by 501 publications

(328 citation statements)

References 108 publications

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“…FeOB and SOB are important participants in the biogeochemical cycling of iron and sulfur, bioleaching of metal ores, and biocorrosion of metals (18,78,99,178,(429)(430)(431). Most of the FeOB and SOB are microaerophiles that prefer low-oxygen conditions for chemolithoautotrophic CO 2 fixation, and some of them are facultative anaerobes that can carry out iron and sulfur oxidation by using alternative terminal electron acceptors such as nitrate and nitrite instead of oxygen (99, 133,178,429,430,432,433).…”

Section: Microbial Quorum Sensingmentioning

confidence: 99%

Microbial Surface Colonization and Biofilm Development in Marine Environments

Dang

Lovell

2016

Microbiol Mol Biol Rev

870

636

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SUMMARYBiotic and abiotic surfaces in marine waters are rapidly colonized by microorganisms. Surface colonization and subsequent biofilm formation and development provide numerous advantages to these organisms and support critical ecological and biogeochemical functions in the changing marine environment. Microbial surface association also contributes to deleterious effects such as biofouling, biocorrosion, and the persistence and transmission of harmful or pathogenic microorganisms and their genetic determinants. The processes and mechanisms of colonization as well as key players among the surface-associated microbiota have been studied for several decades. Accumulating evidence indicates that specific cell-surface, cell-cell, and interpopulation interactions shape the composition, structure, spatiotemporal dynamics, and functions of surface-associated microbial communities. Several key microbial processes and mechanisms, including (i) surface, population, and community sensing and signaling, (ii) intraspecies and interspecies communication and interaction, and (iii) the regulatory balance between cooperation and competition, have been identified as critical for the microbial surface association lifestyle. In this review, recent progress in the study of marine microbial surface colonization and biofilm development is synthesized and discussed. Major gaps in our knowledge remain. We pose questions for targeted investigation of surface-specific community-level microbial features, answers to which would advance our understanding of surface-associated microbial community ecology and the biogeochemical functions of these communities at levels from molecular mechanistic details through systems biological integration.

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Section: Microbial Quorum Sensingmentioning

confidence: 99%

Microbial Surface Colonization and Biofilm Development in Marine Environments

Dang

Lovell

2016

Microbiol Mol Biol Rev

870

636

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“…Many bacteria belonging to Rhodobacteraceae are known to perform phototrophic iron oxidation [32]. In addition, it has been speculated that the members of Rhodobacteraceae form the initial biofilm since they are able to survive on nutrient poor conditions of early stages of biofilm formation.…”

Section: Discussionmentioning

confidence: 99%

Biofouling on Coated Carbon Steel in Cooling Water Cycles Using Brackish Seawater

Rajala

Sohlberg

Priha

et al. 2016

JMSE

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Abstract:Water cooling utilizing natural waters is typically used for cooling large industrial facilities such as power plants. The cooling water cycles are susceptible to biofouling and scaling, which may reduce heat transfer capacity and enhance corrosion. The performance of two fouling-release coatings combined with hypochlorite treatment were studied in a power plant utilizing brackish sea water from the Baltic Sea for cooling. The effect of hypochlorite as an antifouling biocide on material performance and species composition of microfouling formed on coated surfaces was studied during the summer and autumn. Microfouling on surfaces of the studied fouling-release coatings was intensive in the cooling water cycle during the warm summer months. As in most cases in a natural water environment the fouling consisted of both inorganic fouling and biofouling. Chlorination decreased the bacterial number on the surfaces by 10-1000 fold, but the efficacy depended on the coating. In addition to decreasing the bacterial number, the chlorination also changed the microbial species composition, forming the biofilm on the surfaces of two fouling-release coatings. TeknoTar coating was proven to be more efficient in combination with the hypochlorite treatment against microfouling under these experimental conditions.

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“…These iron bacteria are assumed to deposit Fe and Mn oxides on their extracellular structures. However, their physiology and mechanisms for the deposition of Fe and Mn are still uncertain, except for chemolithotrophic, Fe-oxidizing bacteria (FeOB) Gallionella, and heterotrophic, Fe-and Mn-oxidizing bacteria (MnOB) Leptothrix (Ghiorse, 1984;Tebo, et al, 2005;Emerson et al, 2010;Hedrich et al, 2011). In biological filtration plants, the presence of several iron bacteria was shown by microscopic observations of their distinctive extracellular structures (Kojima, 1972;Czekalla et al, 1985;Mouchet, 1992;Tamura et al, 1999;Pacini et al, 2005), but further studies on the diversity of these microbial consortia were poorly conducted.…”

Section: Introductionmentioning

confidence: 99%

Bacterial Diversity in Biological Filtration Plant for the Removal of Iron and Manganese from Groundwater

Chhetri

Suzuki

Takezaki

et al. 2013

J. of Wat. ^|^ Envir. Tech.

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Bacterial diversity of the microbial consortia in a biological filtration plant for the elimination of iron (Fe) and manganese (Mn) from groundwater in Joyo City, Kyoto, Japan, was studied. PCR-based denaturing gradient gel electrophoresis (DGGE) analysis of bacterial 16S ribosomal RNA (rRNA) genes represented at least 15 signals, and nucleotide sequences of the dominant fragments showed similarities to Gallionella and Nitrospira. Phylogenetic analysis using the obtained nucleotide sequences of the 16S rRNA gene clone library showed the presence of the bacteria related to Hyphomicrobium, Gallionella, and Sideroxydans, which are supposed to be involved in Fe and Mn removal. In contrast, no 16S rRNA gene clone affiliated with the genus Leptothrix, which have been regarded as a major Fe-and Mn-oxidizer in biological filtration system, was observed. Though a large number of 16S rRNA gene clones closely related to Nitrospira was obtained, no clone showed high sequence similarity to known ammonium oxidizing bacteria (AOB). However, PCR-amplification of the ammonia monooxigenase gene (amoA) of AOB and ammonia oxidizing archaea (AOA) indicated the presence of both AOB and AOA in this biological filtration plant.

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The iron-oxidizing proteobacteria

Cited by 501 publications

References 108 publications

Microbial Surface Colonization and Biofilm Development in Marine Environments

Microbial Surface Colonization and Biofilm Development in Marine Environments

Biofouling on Coated Carbon Steel in Cooling Water Cycles Using Brackish Seawater

Bacterial Diversity in Biological Filtration Plant for the Removal of Iron and Manganese from Groundwater

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