A comparison was made of membrane protein patterns of various Aeromonas salmonicida strains, initially isolated from different habitats with respect to fish species affected, pathological entity, and geographic location of the outbreak of the disease. A major protein with a molecular weight of 54 000 was found in all autoagglutinating strains, whereas this protein is present in low amounts, or ...

Background: Aeromonas species are Gram-negative ubiquitous bacteria, facultative anaerobic rods that infect both invertebrates and vertebrates. Various fish species develop hemorrhagic disease and furunculosis due to Aeromonas spp. Aeromonas strains generate certain active compounds such as siderophores, which are the final products of non-ribosomal peptide synthetase (NRPS) activity. The prese...

BACKGROUND AND OBJECTIVES In the present study, isolation of Streptomyces associated with marine sponges and its bioactive potential against fish and shellfish pathogens were assessed. The Streptomyces sp. were isolated from the marine sponges namely Callyspongia diffusa, Mycale mytilorum, Tedania anhelans and Dysidea fragilis collected from Vizhinjam port, situated in the South-West coast of I...

Aeromonas hydrophila strain KOR1, isolated from mangrove rhizosphere soil, has the ability to produce the quorum-sensing signal molecule. Here, we report the 4.78-Mb genome sequence of strain KOR1, and found its quorum-sensing encoding gene LuxR. The data will be crucial to understanding the quorum-sensing-dependent phenotypes of this bacterium.

The medicinal leech has established a long-term mutualistic association with Aeromonas veronii, a versatile bacterium which can also display free-living waterborne and fish- or human-pathogenic lifestyles. Here, we investigated the role of antibiotics in the dynamics of interaction between the leech and its gut symbiont Aeromonas. By combining biochemical and molecular approaches, we isolated a...

The objective was to analyse the antibacterial ability of members of the intestinal microbiota of Oncorhynchus mykiss specimens on several bacterial target strains that contaminate food and cause disease in humans. Bacterial colonies from an intestinal portion of the 20 specimens of O. mykiss were obtained in different culture media. Several of the colonies showed antibacterial action on differ...

Clinical strains of Aeromonas hvdrophlla and Aeromonas sobria were used to develop a mouse model for determining virulence potentials of food isolates. lntraperitoneal injection with these strains caused hemorrhaging and death of 10—12 week old male BALB/c mice within 24 h post challenge. Nonsupplemented injections of Aeromonas sp. suspensions resulted in a median LD 50 value of 4.9 X 10 cells,...

This study aimed to evaluate phagocytic and bactericidal activity of macrophages originated from murine J774 macrophage cell line against 26 strains of Aeromonas caviae, Aeromonas veronii biotype sobria and Aeromonas hydrophila isolated from human fecal specimens. The analysis of phagocytic index (PI) indicated these strains were phagocytosed in low numbers, below 1.1 x l0(-3) for 65% strains o...

Title of Document: A STUDY OF UNUSUAL METABOLIC VARIANTS OF AEROMONAS CAVIAE AND AEROMONAS HYDROPHILA USING A POLYPHASIC TAXONOMIC APPROACH Zenas Chang, MS, 2010 Directed By: Professor Sam W. Joseph, CBMG Variation in acid production from carbohydrate metabolism has been identified in Aeromonas as a potential indicator for new subspecies. Therefore, pure cultures of non-lactose fermenting Aerom...