Volume : II, Issue : VII, July - 2013

Microbial Siderophore as a Potent Biocontrol Agent for Plant Pathogens

P. Prema, M. Selvarani

Abstract :

Siderophores are compounds secreted under low iron stress, that act as a specific ferric iron chelate agents and due to their potentialities in the biological control of phytopathogenic fungi and bacteria their study have been stimulated in recent years. Siderophores produced by Pseudomonas species have been widely studied as biological agents and it is an alternative to take into account in the control of phytopathogenic microorganism in agriculture. In the present study, Pseudomonas fluorescens produced an extracellular siderophores when grown in Kings’B medium under iron deficiency. The optimal medium composition for the production of siderophore was 0.5 μM iron concentration, 55 μM glucose concentration, temperature 30o C, incubation time 72 hrs and pH 7.0. The UV spectral study of the produced siderophore showed maximum absorption peak ranged between 320 nm and 410 nm. The produced siderophores were antagonistic to fungal pathogens like Fusarium oxysporum and Sclerotium rolfsii. Hence Pseudomonas aeruginosa can be found efficient for siderophore production and biocontrol for fungal pathogens.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

P.Prema, M.Selvarani Microbial Siderophore as a Potent Biocontrol Agent for Plant Pathogens International Journal of Scientific Research, Vol : 2, Issue : 7 July 2013

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