Pseudomonas and Pedobacter isolates from King George Island inhibited the growth of foodborne pathogens

Wong, Clemente Michael Vui Ling; Tam, Heng Keat; Alias, Siti Aisyah; González-Aravena, Marcelo; González-Rocha, Gerardo; Domínguez-Yévenes, Mariana

doi:10.2478/v10183-011-0003-y

Cited by 31 publications

(29 citation statements)

References 23 publications

(23 reference statements)

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“…In current study, ethyl acetate was used for compound extraction. Present studies support the general observation that gram negative bacteria were not susceptible for antibacterial compound present in marine bacteria, but gram positive bacteria were susceptible towards antibacterial compound present in marine bacteria (Saadoun et al, 1999, Basilio et al, 2003Wong et al, 2011). PR-MB-16 belongs to Pseudoalteromonas espejiana and its ethyl acetate extract has potent activity against pathogenic gram positive and gram negative bacteria.…”

Section: Discussionsupporting

confidence: 91%

Phylogenetic analysis and biological characteristic tests of marine bacteria isolated from Southern Ocean (Indian sector) water

et al. 2015

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Fifty-seven bacteria were isolated from Southern Ocean (Indian sector) water samples which were collected from different latitude and longitude of the ocean. All the isolates were able to grow at 4°C, 20°C, 37°C and tolerable NaCl concentration up to 13.5% (w/v). 29 out of 57 isolates were identified using 16S rDNA amplification and the sequences were submitted to National Center for Biotechnology Information (NCBI). All the isolates were classified by using Ribosomal Database Project (RDP) and found that isolates belongs to Proteobacteria and Bacteriodes. The average G+C content was 56.4%. The isolates were screened for the presence of extracellular enzymes, viz. amylase, catalase, urease, esterase, lipase and protease. The disc diffusion method is used to screen antibiotic production by the isolates against four pathogenic bacteria, viz. Salmonella typhimurium (NCIM 2501), Staphylococcus aureus (NCIM 2122), Bacillus subtilis (NCIM 2193), and Pseudomonas aeruginosa (NCIM 2036). Nine out of 29 were found to be antibiotic producer.

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Section: Discussionsupporting

confidence: 91%

Phylogenetic analysis and biological characteristic tests of marine bacteria isolated from Southern Ocean (Indian sector) water

et al. 2015

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“…Antibiotic resistance genes are often located on plasmids that are able to be horizontally transferred into diverse bacterial popula− tions contributing to the widespread dissemination of antibiotic resistance in the en− vironment (Davison 1999;Michaud et al 2004). Antibiotic−resistant bacteria have also detected in cold environments such as sandstones in McMurdo valley, Antarc− tica (Siebert et al 1996); the Arctic permafrost subsoil in Siberia (Mindlin et al 2008); near Palmer Station, Antarctica (Miller et al 2009); West Antarctica King George Island (Wong et al 2011); glacier environments in the Arctic, Antarctic, Central Asia, North and South America (Segawa et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Characterization of heavy metals resistant heterotrophic bacteria from soils in the Windmill Islands region, Wilkes Land, East Antarctica

Tomova¹,

Stoilova−Disheva²,

Vasileva−Tonkova³

2014

Polish Polar Research

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Abstract:In this study, selected heavy metals resistant heterotrophic bacteria isolated from soil samples at the Windmill Islands region, Wilkes Land (East Antarctica), were character− ized. Phylogenetic analysis revealed affiliation of isolates to genera Bacillus, Lysini− bacillus, Micrococcus and Stenotrophomonas. The strains were found to be psychrotolerant and halotolerant, able to tolerate up to 10% NaCl in the growth medium. The Minimum In− hibitory Concentration of the seven heavy metals Cr, Cu, Ni, Co, Cd, Zn, and Pb was deter− mined in solid media for each bacterial strain. Gram−positive Vi−2 strain and Gram−negative Vi−4 strain showed highest multiply heavy metals resistance, and Vi−3 and Vi−4 strains showed multi−antibiotic resistance to more than a half of the 13 used antibiotics. Plasmids were detected only in Gram−negative Vi−4 strain. The bacteria were able to produce differ− ent hydrolytic enzymes including industrially important proteases, xylanases, cellulases, and b−glucosidases. High heavy metals resistance of the Antarctic bacteria suggests their potential application for wastewater treatment in cold and temperate climates. Highly sensi− tive to Cd and Co ions Vi−1, Vi−5 and Vi−7 strains would be promising for developing biosensors to detect these most toxic heavy metals in environmental samples.

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“…Surprisingly, there are many antibiotic-resistant bacterial strains in Antarctic even though there is no apparent antibiotic selective pressure in the Antarctic ecosystems (Alam and Singh 2002;Wong et al 2011). Antarctic is one of the least exposed environments to human and other activities when compared to other ecosystems on earth.…”

Section: Introductionmentioning

confidence: 98%

Multiple-antibiotic-resistant bacteria from the maritime Antarctic

et al. 2015

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The existence of multiple-antibiotic-resistant strains of environmental bacteria is commonly linked to human activities. However, multiple-antibiotic-resistant strains of bacteria are also widely found in the Antarctic that has limited human activity. This study was conducted to examine the prevalence of antibiotic-resistant strains among Antarctic bacteria. Forty-five bacterial strains from Estrellas lake of King George Island and Crater lake of Deception Island, Antarctic, were exposed to 30 different antibiotics. Forty out of the 45 bacterial strains were affiliated to 12 genera, Aeromicrobium, Arthrobacter, Bacillus, Brevundimonas, Cryobacterium, Dyadobacter, Flavobacterium, Methylibium, Pedobacter, Pseudomonas, Rhodococcus, and Sphingomonas. Among the bacteria, 43 strains were resistant to at least three antibiotics, and 26 strains were resistant to 10 or more different antibiotics. Pseudomonas spp. and four unknown Microbacteriaceae bacteria were found to be resistant to majority of the antibiotics tested. Two bacteria, each from Estrellas and Crater lakes, were sensitive to all the antibiotics tested. These results indicated that Antarctic bacteria are probably the reservoirs for antibiotic resistance genes.

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Pseudomonas and Pedobacter isolates from King George Island inhibited the growth of foodborne pathogens

Cited by 31 publications

References 23 publications

Phylogenetic analysis and biological characteristic tests of marine bacteria isolated from Southern Ocean (Indian sector) water

Phylogenetic analysis and biological characteristic tests of marine bacteria isolated from Southern Ocean (Indian sector) water

Characterization of heavy metals resistant heterotrophic bacteria from soils in the Windmill Islands region, Wilkes Land, East Antarctica

Multiple-antibiotic-resistant bacteria from the maritime Antarctic

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