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A comparative study of siderophore production by fungi from marine and terrestrial habitats

Baakza, Arefa and Vala, AK and Dave, BP and Dube, HC (2004) A comparative study of siderophore production by fungi from marine and terrestrial habitats. Journal of Experimental Marine Biology and Ecology, 311. pp. 1-9.

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Siderophore producing potential of 20 fungal isolates (same 10 species from each marine and terrestrial habitat) were examined and compared. Except marine Aspergillus flavus, all isolates produced siderophores as evidenced by positive reaction in FeCl3 test, CAS assay and CAS agar plate test. The results indicated widespread occurrence of siderophores in both the habitats. Examination of the chemical nature of siderophores revealed that mucoraceous fungi produced carboxylate, while others produced hydroxamate siderophores. Thus, the nature of siderophore was found to be independent of habitat. Among all the isolates, Cunninghamella elegans (marine form) was maximum siderophore producer (1987.5 Ag/ml) followed by terrestrial form of C. elegans (1248.75 Ag/ml). There was no marked variation in siderophore concentration of Penicillium funiculosum strains. Comparison of quantification of siderophore production between marine and terrestrial revealed that four terrestrial isolates (Aspergillus niger, Aspergillus ochraceous, Penicillium chrysogenum, Penicillium citrinum) were ahead in siderophore production, while, the other four marine isolates (Aspergillus versicolor, C. elegans, Rhizopus sp., Syncephalastrum racemosum) were found to be more potent siderophore producers, indicating that they were equally competent.

Item Type: Article
Subjects: Geosciences (General)
Earth Resources and Remote Sensing
Divisions: Bhavnagar Univ - Marine Coastal Ecology of West Coast
Depositing User: Unnamed user with email
Date Deposited: 26 Feb 2010 06:12
Last Modified: 03 Mar 2010 06:07

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