Bioaugmentation with bacteria selected from the microbiome enhances Arthrocnemum macrostachyum metal accumulation and tolerance
| Autor: | Eloísa Pajuelo, Ignacio D. Rodríguez-Llorente, Susana Redondo-Gómez, Salvadora Navarro-Torre, Enrique Mateos-Naranjo, Miguel A. Caviedes, José M. Barcia-Piedras |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Bioaugmentation 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Botany Soil Pollutants Soil Microbiology 0105 earth and related environmental sciences Rhizosphere Amaranthaceae Bacteria biology Inoculation Microbiota food and beverages biology.organism_classification Pollution Phytoremediation Biodegradation Environmental Metals Arthrocnemum macrostachyum Shoot Phytotoxicity 010606 plant biology & botany |
| Zdroj: | Marine Pollution Bulletin. 117:340-347 |
| ISSN: | 0025-326X |
| Popis: | A glasshouse experiment was designed to investigate the role of bacterial consortia isolated from the endosphere (CE) and rhizosphere (CR) of Arthrocnemum macrostachyum on its metal uptake capacity and tolerance in plants grown in metal polluted sediments. A. macrostachyum plants were randomly assigned to three bioaugmentation treatments (CE, CR and without inoculation) during 120days. Bioaugmentation with both bacterial consortia enhanced A. macrostachyum capacity to accumulate ions in its roots, while shoot ions concentration only increased with CE treatment. Furthermore bioaugmentation ameliorated the phytotoxicity levels, which was reflected in an increment of plant growth of 59 and 113% for shoots and 52 and 98% for roots with CE and CR treatments, respectively. This effect was supported by bacteria beneficial effect on photochemical apparatus and the modulation of its oxidative stress machinery. These findings indicated that bacteria selected from the microbiome can be claimed to improve A. macrostachyum metal remediation efficiency. |
| Databáze: | OpenAIRE |
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