Role of bacterial auxin-like compounds and siderophores in the root development and heavy metal uptake of Salix viminalis L. in the presence of lead and chromium
A large Hungarian consortium was formed to investigate the effectiveness of phytoremediation on heavy metal polluted sites. In previous study 29 endemic bacterium strains from the same soil samples isolated and identified. A consortium of the collected bacteria could improve the root development of...
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| Testületi szerző: | |
| Dokumentumtípus: | Könyv része |
| Megjelent: |
SZAB
Szeged
2012
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| Sorozat: | Proceedings of the International Symposium on Analytical and Environmental Problems
17 |
| Kulcsszavak: | Környezetkémia, Nehézfémek |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/76386 |
| Tartalmi kivonat: | A large Hungarian consortium was formed to investigate the effectiveness of phytoremediation on heavy metal polluted sites. In previous study 29 endemic bacterium strains from the same soil samples isolated and identified. A consortium of the collected bacteria could improve the root development of Salix viminalis L. in the presence of 100 pM Cr3+ and Pb2+, which heavy metals inhibited the root development without the bacteria. Moreover, the bacterial consortium also changed the distribution of heavy metals in the plant tissues. In the presented work, we tried to find the potential reasons for the changed root development and distribution of heavy metals. The production of bacterial auxin-like molecules and siderophore compounds was hypothesized and investigated. According to our results, all strains of the bacterial consortium were able to produce auxin-like and siderophore compounds. In most cases, siderophore production of bacterium strains was as effective as EDTA (ethylene diamine tetraacetate, as synthetic chelator). Acinetobacter strains were found to be the best siderophore and auxin-like compound producers from the applied bacteria. |
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| Terjedelem/Fizikai jellemzők: | 43-46 |
| ISBN: | 978-963-315-066-5 |