Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/8141
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dc.contributor.authorRajkumar, Mani-
dc.contributor.authorMa, Ying-
dc.contributor.authorFreitas, Helena-
dc.date.accessioned2009-02-09T11:13:22Z-
dc.date.available2009-02-09T11:13:22Z-
dc.date.issued2008en_US
dc.identifier.citationJournal of Basic Microbiology. 9999:9999 (2008) NAen_US
dc.identifier.urihttp://hdl.handle.net/10316/8141-
dc.description.abstractA metal-resistant bacterial strain SM3 isolated from a serpentine soil in the north-east of Portugal was characterized as Bacillus weihenstephanensis based on the morphological and biochemical characteristics and on the comparative analysis of the partial 16S ribosomal DNA sequence. Bacillus weihenstephanensis SM3 showed a high degree of resistance to nickel (1500 mg l-1), copper (500 mg l-1) and zinc (700 mg l-1) and also to antibiotics (ampicillin, penicillin, kanamycin and streptomycin). Strain SM3 has also exhibited the capability of solubilizing phosphate and producing indole-3-acetic acid (IAA) both in the absence and in the presence of metals (Ni, Cu and Zn). A pot experiment was conducted to elucidate the effects of strain SM3 on plant growth and uptake of Ni, Cu or Zn by Helianthus annuus. Inoculation with strain SM3 increased the shoot and root biomass of H. annuus grown in both non-contaminated and contaminated soil. Furthermore, strain SM3 increased the accumulation of Cu and Zn in the root and shoot systems. A batch experiment was also conducted to assess the metal mobilization potential of strain SM3 in soil. Inoculation with this strain increased the concentrations of water soluble Ni, Cu and Zn in soil. Metal solubilization by this bacterial strain may be an important process to promote the uptake of heavy metals by plants. This study elucidates the multifarious role of strain SM3 in plant growth promotion and its metal mobilizing potential. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)en_US
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleCharacterization of metal-resistant plant-growth promoting Bacillus weihenstephanensis isolated from serpentine soil in Portugalen_US
dc.typearticleen_US
dc.identifier.doi10.1002/jobm.200800073en_US
item.fulltextCom Texto completo-
item.languageiso639-1en-
item.grantfulltextopen-
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
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