Oxygen defense in sulfate-reducing bacteria

Dolla, Alain; Fournier, Marjorie; Dermoun, Zorah

doi:10.1016/j.jbiotec.2006.03.041

Cited by 177 publications

(150 citation statements)

References 90 publications

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“…These results are in agreement with the ones of Johnson et al [44] and Dolla et al [45] who found that some species of SRB were capable of slow linear aerobic growth in sulfate-containing medium in the presence of very low concentrations of oxygen. Thus, the abundance and metabolic activity of SRB in oxic zones of numerous biotopes are frequently evaluated as higher than those in neighboring anoxic zones [46] [47].…”

Section: Impact Of Drainage On Srb Populations' Development and Activitysupporting

confidence: 93%

Dynamics and Activity of Sulfate-Reducing Bacterial Populations in Paddy Soil under Subsurface Drainage: Case Study of Kamboinse in Burkina Faso

Otoidobiga¹,

Keïta²,

Yacouba³

et al. 2015

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Sulfide toxicity is a common disease generally associated with iron toxicity which occurs in rice fields when the Sulfate-Reducing Bacteria (SRB) produce sulfides ions in anaerobic conditions. The high quantity of sulfides ions in the soil solution upsets the mineral element balance in the rice, affects its growth and causes crop yield losses. In Burkina Faso, many rice field soils are abandoned due to sulfides toxicity. The present study was developed to evaluate the impact of subsurface drainage on SRB dynamics and activity during rice cultivation and the incidence on rice production. Twelve concrete microplots with a clay-loam soil and a rice variety susceptible to sulfides toxicity (FKR 19) were used for the experiment. Soil in microplots was drained for 7 days (P1), 14 days (P2), and 21 days (P3), respectively. Control (T) microplots without drainage were prepared similarly. The evolution of SRB populations and the content of sulfides ions in the paddy soil and in soil near rice roots were monitored throughout the cultural cycle using MPN and colorimetric methods, respectively. Data obtained were analyzed in relation to drainage frequency, rice growth stage, and rice yield using the Student's t-test and XLSTAT 7.5.2 statistical software. From the results obtained, the subsurface drainage did not affect significantly SRB populations (P = 0.187). However, the drainage affected significantly sulfides concentration in the soil near rice roots (P = 0.032). The concentration of sulfides (P < 0.0001) in soil near rice roots and the number of SRB (P < 0.0001) were significantly higher during the rice tillering and maturity stages. Although no significant difference was observed for rice yield among treatments (P = 0.209), the P2 * Corresponding author. C. H. Otoidobiga et al. 1394subsurface drainage showed the highest yield and a low concentration of sulfides in soil near rice roots.

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Section: Impact Of Drainage On Srb Populations' Development and Activitysupporting

confidence: 93%

Dynamics and Activity of Sulfate-Reducing Bacterial Populations in Paddy Soil under Subsurface Drainage: Case Study of Kamboinse in Burkina Faso

Otoidobiga¹,

Keïta²,

Yacouba³

et al. 2015

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“…Sulfur reducing bacteria possess several oxygen defense strategies that allow survival in conditions of transient oxidative stress (Dolla et al 2006;Miletto et al 2008). This observation explains their occurrence and activity in the rhizosphere and sediment that drought-stressed wetlands.…”

Section: Role Of Sulfate Reducing Diazotrophsmentioning

confidence: 97%

Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation

et al. 2010

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We used established long-term experimental P-amended plots in freshwater marshes of northern Belize to determine the impact of P input on nitrogen (N) fixation. Marshes with different conductivities and sulfate concentrations were selected to elucidate the effect of salinity and the contribution of sulfur reducing bacteria to the overall N fixation. Rates of N fixation in sediment, roots, and cyanobacterial mats was measured in laboratory incubation experiments (acetylene reduction assay calibrated by 15 N 2 reduction assay) with and without the addition of sodium molybdate (sulfur reducing bacteria inhibitor). P has increased macrophyte primary production significantly, which led to the rapid elimination of cyanobacterial mats and the elimination of autotrophic N fixation. P addition enhanced heterotrophic N fixation in both the sediments and rhizosphere due primarily to increased C supply to the sediment. When expressed on a dry weight basis, root associated N fixation was higher than sediment N fixation, but the contribution of the root associated fixation to the total N fixation was small when expressed per square meter. Sulfur reducing bacteria were an important component of N fixation, contributing from 20 to 53% to the overall N fixation. A simple N budget was created to determine if N demands are met following P addition. The heterotrophic N fixation substituted in part for autotrophic cyanobacterial N fixation when P limitation was alleviated.

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“…Anaerobic sulfate-reducing bacteria face the problem of toxic exposure to oxygenated water during transport. However, a number of SRB have been shown to develop molecular strategies to remove oxygen or to use oxygen temporarily for respiration to reduce its toxicity (Cypionka, 2000;Dolla et al, 2006). In addition, mass transport often occurs in the form of aggregates, whose insides can be anoxic (Ploug et al, 1997).…”

Section: Sediment Transport Effects On Experimentallydetermined Tempementioning

confidence: 99%

Temperature characteristics of bacterial sulfate reduction in continental shelf and slope sediments

2012

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Abstract. The temperature responses of sulfate-reducing microbial communities were used as community temperature characteristics for their in situ temperature adaptation, their origin, and dispersal in the deep sea. Sediments were collected from a suite of coastal, continental shelf, and slope sediments from the southwest and southeast Atlantic and permanently cold Arctic fjords from water depths ranging from the intertidal zone to 4327 m. In situ temperatures ranged from 8 • C on the shelf to −1 • C in the Arctic. Temperature characteristics of the active sulfate-reducing community were determined in short-term incubations with 35 S-sulfate in a temperature gradient block spanning a temperature range from 0 to 40 • C. An optimum temperature (T opt ) between 27 • C and 30 • C for the South Atlantic shelf sediments and for the intertidal flat sediment from Svalbard was indicative of a psychrotolerant/mesophilic sulfate-reducing community, whereas T opt ≤ 20 • C in South Atlantic slope and Arctic shelf sediments suggested a predominantly psychrophilic community. High sulfate reduction rates (20-50 %) at in situ temperatures compared to those at T opt further support this interpretation and point to the importance of the ambient temperature regime for regulating the short-term temperature response of sulfate-reducing communities. A number of cold (< 4 • C) continental slope sediments showed broad temperature optima reaching as high as 30 • C, suggesting the additional presence of apparently mesophilic sulfate-reducing bacteria. Since the temperature characteristics of these mesophiles do not fit with the permanently cold deep-sea environment, we suggest that these mesophilic microorganisms are of allochthonous origin and transported to this site. It is likely that they were deposited along with the mass-flow movement of warmer shelf-derived sediment. These data therefore suggest that temperature response profiles of bacterial carbon mineralization processes can be used as community temperature characteristics, and that mixing of bacterial communities originating from diverse locations carrying different temperature characteristics needs to be taken into account to explain temperature response profiles of bacterial carbon mineralization processes in sediments.

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Oxygen defense in sulfate-reducing bacteria

Cited by 177 publications

References 90 publications

Dynamics and Activity of Sulfate-Reducing Bacterial Populations in Paddy Soil under Subsurface Drainage: Case Study of Kamboinse in Burkina Faso

Dynamics and Activity of Sulfate-Reducing Bacterial Populations in Paddy Soil under Subsurface Drainage: Case Study of Kamboinse in Burkina Faso

Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation

Temperature characteristics of bacterial sulfate reduction in continental shelf and slope sediments

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