Fluorescent pseudomonads occuring in Macrotermes subhyalinus mound structures decrease Cd toxicity and improve its accumulation in sorghum plants
Cd-tolerant bacterial strains of fluorescent pseudomonads, mostly belonging to Pseudomonas monteillii, were isolated from termite mound soil (Macrotermes subhyalinus, a litter-forager and fungus-growing termite), in a Sudanese shrubby savanna, Burkina Faso. Such large mounds appeared as sites of great bacterial diversity and could be considered as hot spots of metal-tolerant fluorescent pseudomonads. Microbial isolates were inoculated to Sorghum plants (S. bicolor) in glasshouse experiments with soil amended with CdCI2 (560 mg Cd kg-1 soil). Microbial functional diversity was assessed at the end of the experiment by measurement of in situ patterns of catabolic potentials. All the bacteria isolates significantly improved the shoot and total biomass of sorghum plants compared to the control. Results concerning root biomass were not significant with some strains. Arbuscular mycorrhiza (AM) was greatly reduced by CdCI2 amendment, and fluorescent pseudomonad inoculation significantly increased AM colonisation in the contaminated soil. The bacterial inoculation significantly improved Cd uptake by sorghum plants. Measurement of catabolic potentials on 16 substrates showed that the microbial communities were different according to the soil amendment. Soils samples inoculated with pseudomonad strains presented a higher use of ketoglutaric and hydroxybutiric acids, as opposed to fumaric acid in soil samples not inoculated. It is suggested that fluorescent pseudomonads could act indirectly in such metabolic processes by involving a lower rate of degradation of citric acid, in line with the effect of small organic acid on phyto-extraction of heavy metals from soil. This is a first contribution to bioremediation of metal-contaminated sites with soil-to-plant transfer, using termite built structures. Further data are required on the efficiency of the bacterial strains isolated and on the processes involved. © 2006 Elsevier B.V. All rights reserved.
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Subjects: | P34 - Biologie du sol, P02 - Pollution, F62 - Physiologie végétale - Croissance et développement, Sorghum bicolor, cadmium, sol pollué, métal lourd, micro-organisme du sol, Mycorhizé, Pseudomonas fluorescens, Termitidae, bioremédiation, relation plante sol, http://aims.fao.org/aos/agrovoc/c_7247, http://aims.fao.org/aos/agrovoc/c_1178, http://aims.fao.org/aos/agrovoc/c_34324, http://aims.fao.org/aos/agrovoc/c_2223, http://aims.fao.org/aos/agrovoc/c_36167, http://aims.fao.org/aos/agrovoc/c_5023, http://aims.fao.org/aos/agrovoc/c_26647, http://aims.fao.org/aos/agrovoc/c_30632, http://aims.fao.org/aos/agrovoc/c_35028, http://aims.fao.org/aos/agrovoc/c_16146, http://aims.fao.org/aos/agrovoc/c_8081, |
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dig-cirad-fr-5349402024-01-28T14:54:04Z http://agritrop.cirad.fr/534940/ http://agritrop.cirad.fr/534940/ Fluorescent pseudomonads occuring in Macrotermes subhyalinus mound structures decrease Cd toxicity and improve its accumulation in sorghum plants. Duponnois Robin, Kisa Marija, Assigbetse Komi, Prin Yves, Thioulouse Jean, Issartel M., Moulin Patricia, Lepage Michel. 2006. Science of the Total Environment, 370 (2-3) : 391-400.https://doi.org/10.1016/j.scitotenv.2006.07.008 <https://doi.org/10.1016/j.scitotenv.2006.07.008> Fluorescent pseudomonads occuring in Macrotermes subhyalinus mound structures decrease Cd toxicity and improve its accumulation in sorghum plants Duponnois, Robin Kisa, Marija Assigbetse, Komi Prin, Yves Thioulouse, Jean Issartel, M. Moulin, Patricia Lepage, Michel eng 2006 Science of the Total Environment P34 - Biologie du sol P02 - Pollution F62 - Physiologie végétale - Croissance et développement Sorghum bicolor cadmium sol pollué métal lourd micro-organisme du sol Mycorhizé Pseudomonas fluorescens Termitidae bioremédiation relation plante sol http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1178 http://aims.fao.org/aos/agrovoc/c_34324 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36167 http://aims.fao.org/aos/agrovoc/c_5023 http://aims.fao.org/aos/agrovoc/c_26647 http://aims.fao.org/aos/agrovoc/c_30632 http://aims.fao.org/aos/agrovoc/c_35028 http://aims.fao.org/aos/agrovoc/c_16146 Burkina Faso http://aims.fao.org/aos/agrovoc/c_8081 Cd-tolerant bacterial strains of fluorescent pseudomonads, mostly belonging to Pseudomonas monteillii, were isolated from termite mound soil (Macrotermes subhyalinus, a litter-forager and fungus-growing termite), in a Sudanese shrubby savanna, Burkina Faso. Such large mounds appeared as sites of great bacterial diversity and could be considered as hot spots of metal-tolerant fluorescent pseudomonads. Microbial isolates were inoculated to Sorghum plants (S. bicolor) in glasshouse experiments with soil amended with CdCI2 (560 mg Cd kg-1 soil). Microbial functional diversity was assessed at the end of the experiment by measurement of in situ patterns of catabolic potentials. All the bacteria isolates significantly improved the shoot and total biomass of sorghum plants compared to the control. Results concerning root biomass were not significant with some strains. Arbuscular mycorrhiza (AM) was greatly reduced by CdCI2 amendment, and fluorescent pseudomonad inoculation significantly increased AM colonisation in the contaminated soil. The bacterial inoculation significantly improved Cd uptake by sorghum plants. Measurement of catabolic potentials on 16 substrates showed that the microbial communities were different according to the soil amendment. Soils samples inoculated with pseudomonad strains presented a higher use of ketoglutaric and hydroxybutiric acids, as opposed to fumaric acid in soil samples not inoculated. It is suggested that fluorescent pseudomonads could act indirectly in such metabolic processes by involving a lower rate of degradation of citric acid, in line with the effect of small organic acid on phyto-extraction of heavy metals from soil. This is a first contribution to bioremediation of metal-contaminated sites with soil-to-plant transfer, using termite built structures. Further data are required on the efficiency of the bacterial strains isolated and on the processes involved. © 2006 Elsevier B.V. All rights reserved. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/534940/1/document_534940.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.scitotenv.2006.07.008 10.1016/j.scitotenv.2006.07.008 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.scitotenv.2006.07.008 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.scitotenv.2006.07.008 |
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P34 - Biologie du sol P02 - Pollution F62 - Physiologie végétale - Croissance et développement Sorghum bicolor cadmium sol pollué métal lourd micro-organisme du sol Mycorhizé Pseudomonas fluorescens Termitidae bioremédiation relation plante sol http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1178 http://aims.fao.org/aos/agrovoc/c_34324 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36167 http://aims.fao.org/aos/agrovoc/c_5023 http://aims.fao.org/aos/agrovoc/c_26647 http://aims.fao.org/aos/agrovoc/c_30632 http://aims.fao.org/aos/agrovoc/c_35028 http://aims.fao.org/aos/agrovoc/c_16146 http://aims.fao.org/aos/agrovoc/c_8081 P34 - Biologie du sol P02 - Pollution F62 - Physiologie végétale - Croissance et développement Sorghum bicolor cadmium sol pollué métal lourd micro-organisme du sol Mycorhizé Pseudomonas fluorescens Termitidae bioremédiation relation plante sol http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1178 http://aims.fao.org/aos/agrovoc/c_34324 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36167 http://aims.fao.org/aos/agrovoc/c_5023 http://aims.fao.org/aos/agrovoc/c_26647 http://aims.fao.org/aos/agrovoc/c_30632 http://aims.fao.org/aos/agrovoc/c_35028 http://aims.fao.org/aos/agrovoc/c_16146 http://aims.fao.org/aos/agrovoc/c_8081 |
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P34 - Biologie du sol P02 - Pollution F62 - Physiologie végétale - Croissance et développement Sorghum bicolor cadmium sol pollué métal lourd micro-organisme du sol Mycorhizé Pseudomonas fluorescens Termitidae bioremédiation relation plante sol http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1178 http://aims.fao.org/aos/agrovoc/c_34324 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36167 http://aims.fao.org/aos/agrovoc/c_5023 http://aims.fao.org/aos/agrovoc/c_26647 http://aims.fao.org/aos/agrovoc/c_30632 http://aims.fao.org/aos/agrovoc/c_35028 http://aims.fao.org/aos/agrovoc/c_16146 http://aims.fao.org/aos/agrovoc/c_8081 P34 - Biologie du sol P02 - Pollution F62 - Physiologie végétale - Croissance et développement Sorghum bicolor cadmium sol pollué métal lourd micro-organisme du sol Mycorhizé Pseudomonas fluorescens Termitidae bioremédiation relation plante sol http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1178 http://aims.fao.org/aos/agrovoc/c_34324 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36167 http://aims.fao.org/aos/agrovoc/c_5023 http://aims.fao.org/aos/agrovoc/c_26647 http://aims.fao.org/aos/agrovoc/c_30632 http://aims.fao.org/aos/agrovoc/c_35028 http://aims.fao.org/aos/agrovoc/c_16146 http://aims.fao.org/aos/agrovoc/c_8081 Duponnois, Robin Kisa, Marija Assigbetse, Komi Prin, Yves Thioulouse, Jean Issartel, M. Moulin, Patricia Lepage, Michel Fluorescent pseudomonads occuring in Macrotermes subhyalinus mound structures decrease Cd toxicity and improve its accumulation in sorghum plants |
description |
Cd-tolerant bacterial strains of fluorescent pseudomonads, mostly belonging to Pseudomonas monteillii, were isolated from termite mound soil (Macrotermes subhyalinus, a litter-forager and fungus-growing termite), in a Sudanese shrubby savanna, Burkina Faso. Such large mounds appeared as sites of great bacterial diversity and could be considered as hot spots of metal-tolerant fluorescent pseudomonads. Microbial isolates were inoculated to Sorghum plants (S. bicolor) in glasshouse experiments with soil amended with CdCI2 (560 mg Cd kg-1 soil). Microbial functional diversity was assessed at the end of the experiment by measurement of in situ patterns of catabolic potentials. All the bacteria isolates significantly improved the shoot and total biomass of sorghum plants compared to the control. Results concerning root biomass were not significant with some strains. Arbuscular mycorrhiza (AM) was greatly reduced by CdCI2 amendment, and fluorescent pseudomonad inoculation significantly increased AM colonisation in the contaminated soil. The bacterial inoculation significantly improved Cd uptake by sorghum plants. Measurement of catabolic potentials on 16 substrates showed that the microbial communities were different according to the soil amendment. Soils samples inoculated with pseudomonad strains presented a higher use of ketoglutaric and hydroxybutiric acids, as opposed to fumaric acid in soil samples not inoculated. It is suggested that fluorescent pseudomonads could act indirectly in such metabolic processes by involving a lower rate of degradation of citric acid, in line with the effect of small organic acid on phyto-extraction of heavy metals from soil. This is a first contribution to bioremediation of metal-contaminated sites with soil-to-plant transfer, using termite built structures. Further data are required on the efficiency of the bacterial strains isolated and on the processes involved. © 2006 Elsevier B.V. All rights reserved. |
format |
article |
topic_facet |
P34 - Biologie du sol P02 - Pollution F62 - Physiologie végétale - Croissance et développement Sorghum bicolor cadmium sol pollué métal lourd micro-organisme du sol Mycorhizé Pseudomonas fluorescens Termitidae bioremédiation relation plante sol http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_1178 http://aims.fao.org/aos/agrovoc/c_34324 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36167 http://aims.fao.org/aos/agrovoc/c_5023 http://aims.fao.org/aos/agrovoc/c_26647 http://aims.fao.org/aos/agrovoc/c_30632 http://aims.fao.org/aos/agrovoc/c_35028 http://aims.fao.org/aos/agrovoc/c_16146 http://aims.fao.org/aos/agrovoc/c_8081 |
author |
Duponnois, Robin Kisa, Marija Assigbetse, Komi Prin, Yves Thioulouse, Jean Issartel, M. Moulin, Patricia Lepage, Michel |
author_facet |
Duponnois, Robin Kisa, Marija Assigbetse, Komi Prin, Yves Thioulouse, Jean Issartel, M. Moulin, Patricia Lepage, Michel |
author_sort |
Duponnois, Robin |
title |
Fluorescent pseudomonads occuring in Macrotermes subhyalinus mound structures decrease Cd toxicity and improve its accumulation in sorghum plants |
title_short |
Fluorescent pseudomonads occuring in Macrotermes subhyalinus mound structures decrease Cd toxicity and improve its accumulation in sorghum plants |
title_full |
Fluorescent pseudomonads occuring in Macrotermes subhyalinus mound structures decrease Cd toxicity and improve its accumulation in sorghum plants |
title_fullStr |
Fluorescent pseudomonads occuring in Macrotermes subhyalinus mound structures decrease Cd toxicity and improve its accumulation in sorghum plants |
title_full_unstemmed |
Fluorescent pseudomonads occuring in Macrotermes subhyalinus mound structures decrease Cd toxicity and improve its accumulation in sorghum plants |
title_sort |
fluorescent pseudomonads occuring in macrotermes subhyalinus mound structures decrease cd toxicity and improve its accumulation in sorghum plants |
url |
http://agritrop.cirad.fr/534940/ http://agritrop.cirad.fr/534940/1/document_534940.pdf |
work_keys_str_mv |
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_version_ |
1792496565802237952 |