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Toxins 2010, 2(7), 1676-1689; doi:10.3390/toxins2071676

Plant Natural Compounds with Antibacterial Activity towards Common Pathogens of Pond-Cultured Channel Catfish (Ictalurus punctatus)

United States Department of Agriculture, Agricultural Research Service, Natural Products Utilization Research Unit, National Center for Natural Products Research, Post Office Box 8048, University of Mississippi, 38677, USA
Received: 28 April 2010 / Revised: 23 June 2010 / Accepted: 25 June 2010 / Published: 28 June 2010
(This article belongs to the Special Issue The Toxicity of Natural Products)
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Abstract

The bacteria Edwardsiella ictaluri and Flavobacterium columnare cause enteric septicemia and columnaris disease, respectively, in channel catfish (Ictalurus punctatus). Natural therapeutants may provide an alternative to current management approaches used by producers. In this study, a rapid bioassay identified plant compounds as potential therapeutants. Chelerythrine chloride and ellagic acid were the most toxic toward E. ictaluri, with 24-h IC50 of 7.3 mg/L and 15.1 mg/L, respectively, and MIC of 2.1 mg/L and 6.5 mg/L, respectively. Chelerythrine chloride, ellagic acid, β-glycyrrhetinic acid, sorgoleone, and wogonin were the most toxic towards two genomovars of F. columnare, and wogonin had the strongest antibacterial activity (MIC = 0.3 mg/L). View Full-Text
Keywords: antibacterial; channel catfish; chelerythrine; columnaris; ellagic acid; enteric septicemia of catfish; β-glycyrrhetinic acid; sorgoleone; therapeutant; wogonin antibacterial; channel catfish; chelerythrine; columnaris; ellagic acid; enteric septicemia of catfish; β-glycyrrhetinic acid; sorgoleone; therapeutant; wogonin
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Schrader, K.K. Plant Natural Compounds with Antibacterial Activity towards Common Pathogens of Pond-Cultured Channel Catfish (Ictalurus punctatus). Toxins 2010, 2, 1676-1689.

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