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Siderophore Genes in Gram Positive and Gram Negative Nitrogen-Fixing Bacteria

Giongo, A ; Beneduzi, A ; Ambrosini, A ; Farina, R ; Costa, P. B ; Campos, S. B ; Bodanese-Zanettini, M. H ; Passaglia, L. M. P

Biological Nitrogen Fixation: Towards Poverty Alleviation through Sustainable Agriculture, Vol.42, p.379-380

Dordrecht: Springer Netherlands

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  • Título:
    Siderophore Genes in Gram Positive and Gram Negative Nitrogen-Fixing Bacteria
  • Autor: Giongo, A ; Beneduzi, A ; Ambrosini, A ; Farina, R ; Costa, P. B ; Campos, S. B ; Bodanese-Zanettini, M. H ; Passaglia, L. M. P
  • Assuntos: Abundant Element ; Biological Nitrogen Fixation ; Common State ; Ionic Form ; Poverty Alleviation
  • É parte de: Biological Nitrogen Fixation: Towards Poverty Alleviation through Sustainable Agriculture, Vol.42, p.379-380
  • Descrição: Although iron is one of the most abundant elements, its assimilation depends on the development of effective iron-sequestration and uptake strategies by microorganisms. Its most common states, ionic forms, especially iron(III), are insoluble under physiological conditions (Neilands, 1995). To solubilize iron, many microbes synthesize and utilize siderophores, which are relatively low molecular weight, ferric ion-specific chelating agents. When grown under iron-deficient conditions, microorganisms synthesize and excrete siderophores to sequester and solubilize iron from the environment. Many bacteria and fungi produce more than one type of siderophore or have more than one iron-uptake system to take up multiple siderophores (Neilands 1981). Research focusing on the iron-siderophore transport systems is not only important to understand how cells are able to acquire iron, but is also needed to understand transport mechanisms as a whole. Although Gram-negative and -positive bacteria have differences in their cell structure, they share some genes in common for both specific siderophore transport and iron-binding proteins (Clarke et al., 2000).
  • Títulos relacionados: Current Plant Science and Biotechnology in Agriculture
  • Editor: Dordrecht: Springer Netherlands
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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