Soil H2-uptake in relation to soil properties and rhizobial H2-production

Popelier, F.; Liessens, J.; Verstraete, Willy

doi:10.1007/bf02197803

Cited by 34 publications

(17 citation statements)

References 23 publications

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“…7). This was the first direct evidence linking H 2 oxidation with the observed organic carbon increase in both rhizospheric soil around legume nodules and H 2 -treated soils, supporting an earlier report showing a strong correlation between biomass C and H 2 uptake rate of the soil (Popelier et al 1985).…”

Section: Magnitude Of H 2 Production In Agricultural Systemssupporting

confidence: 74%

“…Although a large quantity of H 2 is produced during nitrogen fixation and released from HUP -nodules, little to no H 2 escapes from the root-soil system (Conrad andSeiler 1979a, 1980;La Favre and Focht 1983;Popelier et al 1985). Soil has been identified as a H 2 sink (Conrad 1988;Conrad and Seiler 1979b, 1981Conrad et al 1983;Schuler and Conrad 1990).…”

Section: Magnitude Of H 2 Production In Agricultural Systemsmentioning

confidence: 97%

“…This high affinity H 2 uptake activity is thought to play a major role in maintaining atmospheric pH 2 at about 0.55 ppm . Soils adjacent to HUP -nodules or treated with H 2 have shown greatly increased soil H 2 oxidation capacity, with an additional higher Km to H 2 (La Favre and Focht 1983;Popelier et al 1985;Dong and Layzell 2001). La Favre and Focht (1983) showed that soil H 2 uptake rates decreased exponentially with distance from the nodule and all H 2 was consumed within 3-4.5 cm of the nodule.…”

Section: Magnitude Of H 2 Production In Agricultural Systemsmentioning

confidence: 97%

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Hydrogen production by nitrogenase as a potential crop rotation benefit

Golding

Dong

2010

Environ Chem Lett

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Section: Magnitude Of H 2 Production In Agricultural Systemssupporting

confidence: 74%

Section: Magnitude Of H 2 Production In Agricultural Systemsmentioning

confidence: 97%

Section: Magnitude Of H 2 Production In Agricultural Systemsmentioning

confidence: 97%

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Hydrogen production by nitrogenase as a potential crop rotation benefit

Golding

Dong

2010

Environ Chem Lett

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“…Results obtained with pigeon peas growing in large soil columns demonstrated that despite profuse liberation of H2 in vitro from nodules lacking uptake hydrogenase, H2 gas was not detected in any of the soil columns and these workers concluded that H2 was not lost from the soil -plant ecosystem but was conserved by H2-oxidising bacteria is . Factors affecting soil H2 uptake have been studied by Popelier et al 19. Measurements of H 2 evolution in the experiments reported here were obtained for plants growing in soilless culture and which had been washed free of perlite prior to assay.…”

Section: Discussionmentioning

confidence: 99%

Effect of light and atmospheric carbon dioxide concentration on nitrogen fixation by herbage legumes

Murphy¹

1986

Plant Soil

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Summary Lucerne, red clover and white clover were grown at two atmospheric concentrations of CO 2 (300 and 1000#1 1 -~) and the effects on N 2 fixation, nodule mass/number and root/ shoot dry matter production determined. Pea plants were similarly evaluated as a comparison with grain legumes. CO 2 enrichment increased N 2 fixation activity in all cases but activity/ unit nodule mass was significantly increased only in the pea. The enhancement of N 2 fixation in herbage legumes by CO s enrichment reflected an increase in nodule mass which in turn was attributed to increased nodule number, and results show that under the experimental conditions obtaining here photosynthate supply did not limit nodule N 2 fixation in these plants though it was limiting in the ease of peas.White clover growing in a 6 and 14 hour photoperiod was studied for response of the N 2 fixing system to light. Long photoperiod (14 hour) plants assayed at constant temperature (20~ did not show a significant response to light at the end of the dark period either in terms of fixation per plant or per unit nodule mass, in contrast with short photoperiod (6 hour) plants which showed significant responses. Short photoperiod plants compensated for reduced photosynthates by maintaining only half the root nodule mass and fixation activity of 14 hour photoperiod plants though plants in both systems supported similar rates of N: fixation per unit mass of nodule during the photoperiod. Comparison of N 2 fixation activities in whole and decapitated plant systems indicates the importance of shoot reserves for sustaining nitrogenase activity in white clover during short-term interruption of photosynthesis. These results support the conclusion of the CO s enrichment studies, that herbage legumes have the potential for supplying their nodule photosynthate requirements for sustaining optimum rates of N 2 fixation and excess carbon supply is used solely to promote further nodulatlon.Nodules of short photoperiod white dover plants were less efficient in N 2 fixation in that they evolved more H z relative to N 2 (C2H2) reduced than did long photoperiod plants.

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“…Hydrogen metabolism is widely distributed among various well-described physiological groups of bacteria, such as the methanogenic and acetogenic bacteria [49], the phototrophic bacteria [38,48], the sulfate-reducers [69,70], the organotrophic fermentative bacteria [15,28], or the N2-fixing bacteria [50]. Hydrogen is also reported to be a driving mechanism for the microbial degradation of micropollutants, such as atrazine, in soils and drinking water [67].…”

Section: Introductionmentioning

confidence: 99%

Mixed culture hydrogenotrophic nitrate reduction in drinking water

et al. 1992

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Isolation and identification of the bacteria from a hydrogenotrophic reactor for the denitrification of drinking water revealed that several microorganisms are involved. Acinetobacter sp., Aeromonas sp., Pseudomonas sp. and Shewanella putrefaciens were repeatedly isolated from the hydrogenotrophic sludge and postulated to be of primary importance in the process. Nitrate reduction to nitrite appears to be a property of a diverse group of organisms. Nitrite reduction was found to be stimulated by the presence of organic growth factors. Thus, in a mixed culture, hydrogenotrophic denitrification reactor, NO inf2 (sup-) formed by NO inf3 (sup-) -reducers can be converted by true denitrifiers thriving on organic growth factors either present in the raw water, or excreted by the microbial community. Mixotrophic growth also contributes to NO inf2 (sup-) reduction. Finally, chemolithotrophic bacteria participate in the nitrite to nitrogen gas conversion.

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Soil H2-uptake in relation to soil properties and rhizobial H2-production

Cited by 34 publications

References 23 publications

Hydrogen production by nitrogenase as a potential crop rotation benefit

Hydrogen production by nitrogenase as a potential crop rotation benefit

Effect of light and atmospheric carbon dioxide concentration on nitrogen fixation by herbage legumes

Mixed culture hydrogenotrophic nitrate reduction in drinking water

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