TY - JOUR AU - Foysal, MJ AU - Rahman, MM AU - Alam, M PY - 2012/02/06 Y2 - 2024/03/28 TI - Antibiotic sensitivity and in vitro antimicrobial activity of plant extracts to pseudomonas fluorescens isolates collected from diseased fish JF - International Journal of Natural Sciences JA - Int J Nat Sci VL - 1 IS - 4 SE - Articles DO - 10.3329/ijns.v1i4.9733 UR - https://banglajol.info/index.php/iJNS/article/view/9733 SP - 82-88 AB - <p>Studies were conducted to identify <em>Pseudomonas fluorescens </em>isolates from a collection of bacteria isolated from bacterial haemorrhagic septicaemia infected carp and catfish, evaluate their antibiotic sensitivity pattern and screen the antibacterial activity of some medicinal plant extracts against the isolates.. A total of 10 isolates were identified as <em>P. fluorescens </em>by morphological, physiological and biochemical tests. <em>In vitro </em>antibiotic sensitivity test of the <em>P. fluorescens </em>isolates were conducted by disc diffusion method for seven antibiotics where, all of the isolates were found to be sensitive only against streptomycin and gentamycin but, most of the isolates (80%) were found resistant to chloramphenicol (C). Moreover, eighty percent of the isolates showed resistance to multiple antibiotics. A total of 118 plant extracts were screened for their antibacterial activity against the <em>P. fluorescens </em>isolates where the isolates exhibited sensitivity to 30 samples. Leaf extracts of <em>Tamarindus indicus</em>, <em>Terminalia chebula, Citrus aurantifolia</em>, <em>Eugenia caryophyllata </em>and <em>Spondias pinnata </em>were found to inhibit the growth of all of the <em>P. fluorescens </em>isolates.<strong></strong></p> <p>DOI: <a href="http://dx.doi.org/10.3329/ijns.v1i4.9733">http://dx.doi.org/10.3329/ijns.v1i4.9733</a></p> <p><em>IJNS</em> 2011 1(4): 82-88</p> ER -