Microbial interactions involving sulfur bacteria: implications for the ecology and evolution of bacterial communities

Overmann, Jörg; Gemerden, Hans van

doi:10.1111/j.1574-6976.2000.tb00560.x

Cited by 102 publications

(44 citation statements)

References 78 publications

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“…Different plant product different root exudates and the vegetation growth , by which they support different rhizosphere microbial flora, so this study also showed that rhizosphere microbial abundances varied significantly with different plant species . In the current study, P. australis supported a higher bacterial abundance in every season, while fungi abundance peaked in P. thunbergii , followed by E .…”

Section: Discussionsupporting

confidence: 58%

Seasonal Dynamics of Rhizosphere Soil Microbial Abundances and Enzyme Activities under Different Vegetation Types in the Coastal Zone, Shandong, China

Zhang

Song

et al. 2013

CLEAN Soil Air Water

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Microbial community responses to alternative management may be indicative of soil quality change. In this study, soils were collected from research plots over one year. The rhizosphere soils were studied by measuring microbial abundance (bacteria, fungi, actinomycetes, and ammonifiers), enzyme activities (invertase, catalase, urease, and phosphatase), and their relationship. Rhizosphere microbial abundance of different plant species varied greatly across seasons. The rhizosphere environment generated by Phragmites australis and Echinochloa crus-galli is suitable for microbial growth. In addition, the significant differences in rhizosphere enzyme activities of different plant species across seasons were also observed. There was a significant linear correlation between rhizosphere soil enzyme activities and microbial abundances except for between bacteria and catalase and between fungi and urease, but no such significant relationship was found between all rhizosphere soil microbial abundance and phosphatase except between fungi and acid phosphatase. We concluded that different plant species in coastal areas have different rhizosphere soils, due to the impact of the different root exudates and plant residues of the microbial properties.

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Section: Discussionsupporting

confidence: 58%

Seasonal Dynamics of Rhizosphere Soil Microbial Abundances and Enzyme Activities under Different Vegetation Types in the Coastal Zone, Shandong, China

Zhang

Song

et al. 2013

CLEAN Soil Air Water

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“…The amazing life modes of endosymbiotic sulfur bacteria within tube worms or clams at hydrothermal vents have been described by Cavanaugh [46]. For more information on sulfur-based microbial interactions, see the review by Overmann and van Gemerden [47], this volume.…”

Section: Sul¢de-oxidizing Bacteriamentioning

confidence: 98%

Life at the oxic–anoxic interface: microbial activities and adaptations

Brune¹

2000

FEMS Microbiology Reviews

232

166

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Molecular oxygen is one of the most important reactants in biogeochemical cycles. Due to its low solubility in water, the consumption of oxygen leads to the development of oxic-anoxic interfaces, which separate aerobic from anaerobic processes in virtually all environments, ranging in scale from oceanic sediments to the fecal pellets of a small soil invertebrate. Three case studies were selected to illustrate the basic situation and the specific characteristics of oxic-anoxic interfaces: sediments, the rhizosphere of aquatic plants, and the intestinal tract of insects. Each system is governed by the same general principles, but striking differences arise from, e.g., the nature of the major microbial activities and the mechanisms controlling metabolite fluxes. Also scale and dimensional differences as well as the consequences of temporal fluctuations are of fundamental importance. Recent developments in microbial ecology, which often combine traditional and modern approaches, have significantly furthered our understanding of the specific microniches and the metabolic and behavioral adaptations of microorganisms to life at the oxic-anoxic interface. New concepts help to define the targets of future studies: the spatial organization of microbial populations, their microenvironments and in situ activities, and the functional interactions within structured microbial communities.

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“…The presence of GSB together with purple (sulfur as well as nonsulfur) bacteria has been demonstrated in diverse aquatic ecosystems, including perennially ice-covered meromictic Antarctic lakes (Burke & Burton, 1988;Karr et al, 2003). In the same way as PSB and GSB frequently coexist in aquatic habitats, their cocultures can also be grown with sulfide as the sole electron donor (Overmann & van Gemerden, 2000). Sulfide is oxidized by GSB to zero-valence sulfur, while polythionates are formed abiotically.…”

Section: Prokaryotic Sulfur Oxidation: Photolithotrophy Vis-a ø -Vis mentioning

confidence: 99%

Biochemistry and molecular biology of lithotrophic sulfur oxidation by taxonomically and ecologically diverse bacteria and archaea

Ghosh¹,

Dam²

2009

FEMS Microbiol Rev

462

421

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Lithotrophic sulfur oxidation is an ancient metabolic process. Ecologically and taxonomically diverged prokaryotes have differential abilities to utilize different reduced sulfur compounds as lithotrophic substrates. Different phototrophic or chemotrophic species use different enzymes, pathways and mechanisms of electron transport and energy conservation for the oxidation of any given substrate. While the mechanisms of sulfur oxidation in obligately chemolithotrophic bacteria, predominantly belonging to Beta- (e.g. Thiobacillus) and Gammaproteobacteria (e.g. Thiomicrospira), are not well established, the Sox system is the central pathway in the facultative bacteria from Alphaproteobacteria (e.g. Paracoccus). Interestingly, photolithotrophs such as Rhodovulum belonging to Alphaproteobacteria also use the Sox system, whereas those from Chromatiaceae and Chlorobi use a truncated Sox complex alongside reverse-acting sulfate-reducing systems. Certain chemotrophic magnetotactic Alphaproteobacteria allegedly utilize such a combined mechanism. Sulfur-chemolithotrophic metabolism in Archaea, largely restricted to Sulfolobales, is distinct from those in Bacteria. Phylogenetic and biomolecular fossil data suggest that the ubiquity of sox genes could be due to horizontal transfer, and coupled sulfate reduction/sulfide oxidation pathways, originating in planktonic ancestors of Chromatiaceae or Chlorobi, could be ancestral to all sulfur-lithotrophic processes. However, the possibility that chemolithotrophy, originating in deep sea, is the actual ancestral form of sulfur oxidation cannot be ruled out.

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Microbial interactions involving sulfur bacteria: implications for the ecology and evolution of bacterial communities

Cited by 102 publications

References 78 publications

Seasonal Dynamics of Rhizosphere Soil Microbial Abundances and Enzyme Activities under Different Vegetation Types in the Coastal Zone, Shandong, China

Seasonal Dynamics of Rhizosphere Soil Microbial Abundances and Enzyme Activities under Different Vegetation Types in the Coastal Zone, Shandong, China

Life at the oxic–anoxic interface: microbial activities and adaptations

Biochemistry and molecular biology of lithotrophic sulfur oxidation by taxonomically and ecologically diverse bacteria and archaea

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