Heterogeneity of plant-associated streptococci as characterized by phenotypic features and restriction analysis of PCR-amplified 16S rDNA

Ulrich,; Müller, Thomas H.

doi:10.1046/j.1365-2672.1998.00343.x

Cited by 45 publications

(34 citation statements)

References 46 publications

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“…Enterococci also have a range of sources other than humans, including livestock and domestic and wild birds (7,14). Additionally, they have been found in association with soil, plants, zooplankton, and algae (23,25,28,34). Even Enterococcus faecalis, the species present in the highest concentration in human feces (22), has been found to adhere to zooplankton and to persist in the environment for extended periods of time (24,25).…”

mentioning

confidence: 99%

Persistence and Growth of the Fecal Indicator Bacteria Enterococci in Detritus and Natural Estuarine Plankton Communities

Mote

Turner

Lipp

2012

Appl Environ Microbiol

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ABSTRACTEnterococci are used to evaluate recreational-water quality and health risks in marine environments. In addition to their occurrence in feces of warm blooded animals, they are also common epiphytes. We investigated the contribution of plankton- or particle-associated enterococci in estuarine and coastal water. Seven water and size-fractionated plankton samples were collected monthly between April 2008 and January 2009 in the tidal reaches of the Skidaway River (Georgia, USA). Each size fraction, along with filtered (<30 μm) and bulk estuarine water, was processed according to U.S. Environmental Protection Agency method 1600. Presumptive enterococci were selected and species were identified using carbon substrate utilization patterns. The highest average densities occurred within the 30-, 63-, 105-, and 150-μm size fractions, which also represented the majority (>99%) of the particles within the sampled water. Particle-associated enterococci accounted for as little as 1% of enterococci in bulk water in April to as much as 95% in July.Enterococcus faecaliswas the most commonly isolated species from both water and plankton and represented 31% (16/51) and 35% (6/17) of the identifiedEnterococcusspecies from water and plankton, respectively.Enterococcus casseliflavusrepresented 29% of the selected isolates from plankton and 16% from water. BothE. faecalisandE. casseliflavuswere able to survive and grow in plankton suspensions significantly longer than in artificial seawater.Enterococcusspp. may be highly concentrated in plankton and associated particles, especially during summer and fall months. These findings could have implications for the effectiveness of enterococci as an indicator of coastal water quality, especially in particle-rich environments.

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confidence: 99%

Persistence and Growth of the Fecal Indicator Bacteria Enterococci in Detritus and Natural Estuarine Plankton Communities

Mote

Turner

Lipp

2012

Appl Environ Microbiol

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“…In a previous report, among the Enterococcus isolates collected from river and soil environments, E. hirae [46] and E. mundtii [47] were detected in addition to E. faecalis, E. faecium, E. casseliflavus, and E. gallinarum. The presence of E. casseliflavus, E. mundtii [48], and E. sulfureus [49] are reported to be associated with plant. At St.2, the bottom sediment of the river is muddy, while vegetation and habitats of fish and waterfowl were identified at St.1 and St.3.…”

Section: Discussionmentioning

confidence: 99%

Antibiotic Resistance Profiling and Genotyping of Vancomycin-Resistant Enterococci Collected from an Urban River Basin in the Provincial City of Miyazaki, Japan

Nishiyama

Ogura

Hayashi

et al. 2017

Water

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Abstract:The distribution characteristics of vancomycin-resistant enterococci (VRE) and the resistance of enterococcus isolates to various antibiotics were investigated in Yae River, which flows through Miyazaki city, Japan. The prevalence of VRE among specimens collected from the urban river basin using mEI agar was 0.9% (2 of 226 enterococcal isolates). In the 333 enterococcal isolates obtained using mEI agar or vancomycin-supplemented mEI agar, the possession of the vancomycin-resistant genes (vanA, vanB, vanC1, and vanC2/C3) was examined using multiplex PCR analysis. Although VRE possessing vanA and vanB were not detected in any isolates, isolates possessing vanC2/C3 were detected at all sampling sites and on all days. All isolates (101 strains) possessing vanC2/C3 that were obtained on vancomycin-supplemented mEI agar were identified as E. casseliflavus and analyzed for genotypes using pulse-field gel electrophoresis (PFGE) analysis. These E. casseliflavus isolates revealed them to be genetically highly divergent strains, suggesting that many contamination sources were present in this study area. Many of the enterococcal isolates obtained were resistant to erythromycin, ciprofloxacin, and tetracycline; enterococci distributed in the studied urban river basin are resistant to universally applicable antibiotics. These results indicate that VRE carrying vanC2/C3 are distributed in Yae River, and the sources of VRE are scattered across the river basin.

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“…However, Lc. lactis is not limited to dairy foods; they are also found on plant surfaces and in other sources (Salama et al 1995;Ulrich and Müller 1999). Green plant material is a natural source for Lc.…”

Section: Phenotypic and Genotypic Similarities Between Dairy And Non-mentioning

confidence: 99%

Trends in dairy and non-dairy probiotic products - a review

2015

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Health awareness has grown to a greater extent among consumers and they are looking for healthy probiotic counterparts. Keeping in this view, the present review focuses recent developments in dairy and non-dairy probiotic products. All over the world, dairy probiotics are being commercialized in many different forms. However, the allergy and lactose intolerance are the major set-backs to dairy probiotics. Whereas, flavor and refreshing nature are the major advantages of non-dairy drinks, especially fruit juices. Phenotypic and genotypic similarities between dairy and non-dairy probiotics along with the matrix dependency of cell viability and cell functionality are reviewed. The heterogeneous food matrices of non-dairy food carriers are the major constraints for the survival of the probiotics, while the probiotic strains from non-dairy sources are satisfactory. Technological and functional properties, besides the viability of the probiotics used in fermented products of non-dairy origin are extremely important to get a competitive advantage in the world market. The functional attributes of dairy and non-dairy probiotic products are further enhanced by adding prebiotics such as galacto-oligosaccharide, fructo-oligosaccharide and inulin.

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Heterogeneity of plant-associated streptococci as characterized by phenotypic features and restriction analysis of PCR-amplified 16S rDNA

Cited by 45 publications

References 46 publications

Persistence and Growth of the Fecal Indicator Bacteria Enterococci in Detritus and Natural Estuarine Plankton Communities

Persistence and Growth of the Fecal Indicator Bacteria Enterococci in Detritus and Natural Estuarine Plankton Communities

Antibiotic Resistance Profiling and Genotyping of Vancomycin-Resistant Enterococci Collected from an Urban River Basin in the Provincial City of Miyazaki, Japan

Trends in dairy and non-dairy probiotic products - a review

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