Comparative UV-spectra of fermented cultural extract of antifungal-active Streptomyces isolates recovered from different ecological habitats

Order of Publishing in Issue: 
5
Volume :3
Issue :2
April, 2009
Page No: 
155-161
Authors: 
1Ismail Saadoun, 1Fouad AL-Momani, 1Qotaiba Ababneh and 2Shahidi Bonjar
Address: 
1Dept. of Biological Sciences, Jordan Univ. of Science and Technology, Irbid-22110, Jordan
Address: 
2Department of Plant Pathology, College of Agricultural Sciences, Bahonar University of Kerman, Kerman-Iran
Email-ID: 
isaadoun@just.edu.jo

Abstract:
UV-spectra of antifungal-activeStreptomyces isolates were compared topreviously reported spectra and analyzed underdifferent extraction conditions. MU123Streptomyces isolate from Turkey exhibited a UVspectrum similar to 237 isolate from Jordan with 2maximum absorbance peaks at (226 and 260 nm)and at (220 and 260 nm), respectively. Thisspectrum was repeated by the C5P1-6 isolate fromJordan with 2 maximum absorbance peaks at 225-250 and 300 nm. The aquatic species identifiedas S. violaceusniger showed 2 maximumabsorbance peaks at 231 and 258 nm similar tothe UV spectrum of a clinical isolate ofactinomycetes (Streptomyces sp. 96.0333) thatexhibited 2 absorbance peaks at 220-225 and 262nm. When C1P2-6 isolate from Jordan wascompared to Ir 102 from Iran under same cultural,extraction and UV analysis conditions, datarevealed similar UV spectra with 2 absorbancepeaks for both isolates at 200-225 and 275-300nm. Approximately 50% of reported activescreened isolates exhibit similar UV-spectra whichmight reflect their habitats, culture and UVanalysis conditions. Comparison of UV-spectraand absorption peaks of known antibiotics to thatof active Streptomyces isolates might explain theability of the same Streptomyces sp. to produceseveral antibiotics.

Keywords: 
Comparative UV-spectra of fermented cultural extract of antifungal-active Streptomyces isolates recovered from different ecological habitats
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