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Pak. J. Bot., 46(1): 383-387, 2014. |
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Updated: 15-01-14 | ||||
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THE IMPACT OF SIDEROPHORE SECRETION BY PSEUDOMONAS STUTZERI TO CHELATING Cu METAL IN SOLUTION CULTURE
RAFIA AZMAT
Abstract: This article discuss the interaction of siderophores (which are low molecular weight, secreted metabolites) of microorganisms (Pseudomonas stutzeri) separately and simultaneously with Cu metal in the solution culture on the roots of 4d old seedlings of Vigna radiata. Naturally occurring bacteria play an important role in plant growth due to the release of pigment. It is a coloring compound (siderophore) showed high chemical oxygen demand (COD), lowers the pressure of oxygen. This lowers the nutrient uptake by the roots due to which reduced plant growth with metabolic disorder was observed in the whole plant. A wide range of phenomena from simple to complex interactions was observed between microorganisms and Cu metal in relation with plant root growth such as adsorption, oxidation/reduction of pigment, solubilization. Results showed that microbial strain showed a significant effect on weight of root in aqueous culture whereas nutrient medium support the root growth. Biochemical analysis reflects that lipids were main target of both abiotic and biotic stress that may utilizes to overcome the stress due to which protein contents were seemed to be unaffected at highest concentration of metal or it may also be related with the degradation of lipids due to the biotic and abiotic stress.
Department of Chemistry, University of Karachi, Karachi-75270, Pakistan Corresponding author’s e-mail: rafiasaeed200@yahoo.com |
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