Research Article
Characterization of Streptomyces Isolates Associated with Estuarine Fish Chanos chanos and Profiling of Their Antibacterial Metabolites-Crude-Extract
Table 4
Microscopy morphological, physiological, and biochemical characteristics of selected Streptomyces isolates.
| | Properties | SCA-5 | SCA-8 | SCA-11 | AIA-10 |
| | Microscopy morphological characteristics | | (1) Sporophore morphology | Retina-culiaperti | Spira | Retina-culiaperti | Recti-flexibiles |
| | Physiological characteristics | | (1) pH range for growth | 5–9 | 6–9 | 5–9 | 5–9 | | (2) Optimum pH for growth | 7 | 7 | 7 | 7 | | (3) NaCl tolerance | 6% | 6% | 6% | 4% | | (4) Hemolytic activity | − | − | − | − |
| | Biochemical characteristics | | (1) Citrate utilization | + | + | + | + | | (2) H2S production | − | − | − | − | | (3) Indole production | − | − | + | − | | (4) Voges proskauer | + | + | + | + | | (5) Starch hydrolysis | + | + | + | + | | (6) Enzyme production | | Urease | + | + | − | − | | Gelatinase | + | + | + | + | | β-Galactosidase | − | − | − | − | | Arginine dihydrolase | + | − | − | − | | Lysine decarboxylase | + | − | − | − | | Ornithine decarboxylase | + | − | − | − | | Tryptophan deaminase | + | + | + | + | | (7) Utilization of carbon source | | Glucose | − | + | + | − | | Mannitol | + | − | − | − | | Inositol | − | − | − | − | | Sorbitol | + | − | − | − | | Rhamnose | − | + | − | − | | Saccharose | + | + | + | + | | Melibiose | − | − | − | − | | Amygdalin | + | + | − | + | | Arabinose | + | + | + | + |
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+: positive reaction, −: negative reaction.
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