Evaluation and biochemical characterization of a distinctive pyoverdin from a pseudomonas isolated from chickpea rhizosphere
Braz. j. microbiol
;
43(2): 639-648, Apr.-June 2012. graf, tab
Artículo
en Inglés
| LILACS
| ID: lil-644481
ABSTRACT
Microbial siderophores confiscate the available ferric ions around the roots and trigger a reaction resulting in plant growth promotion. In our study, a high level of siderophore production was observed from a newly isolated Pseudomonas sp. from the rhizosphere of Chickpea plants. Under an iron depleted condition in Standard Succinic acid medium a 1000 µgmL-1 of siderophore production was achieved. Increasing the concentration of iron showed an inverse relationship between growth and siderophore production. Fourier Transform Infrared Spectroscopy (FTIR) analysis of the purified crystals, its UV spectral analysis and High Pressure Liquid Chromatography (HPLC) revealed the identity of the siderophore as similar to that of pyoverdin with distinctive characters. Electron spray ionization mass spectroscopy (ESIMS) shows presence of abundance of A1 ions (419 m/z) and branching of amino acids from B1-B5. This pyoverdin contains a cyclic tetra peptide but Serine and Arginine are missing. Based on our analysis and deviations from the reported structure of pyoverdin it is suggested that this pseudomonas produces distinctly characterized pyoverdin siderophore.
Texto completo:
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Índice:
LILACS (Américas)
Asunto principal:
Técnicas In Vitro
/
Sideróforos
/
Compuestos de Hierro
/
Estructuras de las Plantas
/
Ácido Succínico
/
Aeromonas
Idioma:
Inglés
Revista:
Braz. j. microbiol
Asunto de la revista:
Microbiologia
Año:
2012
Tipo del documento:
Artículo
País de afiliación:
India
/
Estados Unidos
Institución/País de afiliación:
Gujarat University/IN
/
Kentucky State University/US
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