| Registro completo |
| Provedor de dados: |
BABT
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| País: |
Brazil
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| Título: |
Response of Paenibacillus polymyxa to iron: alternations in cellular chemical composition and the production of fusaricidin type antimicrobial compounds
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| Autores: |
Raza,Waseem
Hongsheng,Wu
Qirong,Shen
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| Data: |
2010-10-01
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| Ano: |
2010
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| Palavras-chave: |
Chemical composition
Fusaricidin
Iron
Paenibacillus polymyxa
RNA
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| Resumo: |
In this work, growth, cellular chemical composition and production of fusaricidin type antimicrobial compounds by P. polymyxa SQR-21 were compared in tryptone broth supplemented with four concentrations of iron (25, 50, 100 and 200 µM). The data revealed that the growth of P. polymyxa SQR-21 was increased by 3-8% with the increase in concentration of ferric ion (Fe3+). The production of fusaricidin type compounds was increased by 33-49% only up to 50 µM Fe3+ and the highest level of Fe3+ was inhibitory. Increase in the liquid culture Fe3+concentration increased the intracellular protein (2%), intracellular carbohydrate (14%), extracellular protein (7%) and polysaccharide contents (18%) while the intracellular lipid contents were increased (11%) only up to 50 µM Fe3+. In addition, the regulatory effects of Fe3+ were also reflected by the increase in total RNA contents and relative expression of the fusaricidin synthetase gene (FusA) by 3-13 and 35-56%, respectively, up to 50 µM Fe3+, after that a continuous decrease was observed.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500019
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| Editor: |
Instituto de Tecnologia do Paraná - Tecpar
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| Relação: |
10.1590/S1516-89132010000500019
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| Formato: |
text/html
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| Fonte: |
Brazilian Archives of Biology and Technology v.53 n.5 2010
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| Direitos: |
info:eu-repo/semantics/openAccess
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