Global impact of <i>Vibrio cholerae</i> interactions with chitin

Pruzzo, Carla; Vezzulli, Luigi; Colwell, Rita R.

doi:10.1111/j.1462-2920.2007.01559.x

Cited by 243 publications

(210 citation statements)

References 91 publications

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“…Temporal shifts in zooplankton composition and species dominance may promote the proliferation of groups carrying larger V. parahaemolyticus loads. In contrast to the importance of copepods in the ecology of Vibrio populations in estuarine areas (Colwell, 1996;Pruzzo et al, 2008), the results of the present study suggest only a small significance for copepods in the offshore occurrence of V. parahaemolyticus. This study also revealed that two different groups, Cnidaria and Cladocera, are relatively more influential on V. parahaemolyticus levels.…”

Section: Discussioncontrasting

confidence: 53%

“…Nevertheless, ocean currents have often been proposed as a vehicle for spread of human Vibrio diseases through dispersal of pathogenic specimens attached to zooplankton (Colwell, 1996;Lipp et al, 2002;Halpern et al, 2008;Pruzzo et al, 2008). In recent years, increasing evidence has related major epidemic outbreaks of V. parahaemolyticus to the incursion of oceanic waters of subtropical origin in coastal areas.…”

Section: Introductionmentioning

confidence: 99%

“…The interaction with planktonic organisms has a central role in the pelagic ecology of Vibrio populations. Copepods represent the largest natural reservoir of vibrios in estuarine waters (Colwell, 1996), and the chitin present in copepods provides a number of resources that facilitate enhanced survival in the environment of these organisms, such as food availability, tolerance to stress and protection (Dawson et al, 1981;Huq et al, 1983;Amako et al, 1987;Dumontet et al, 1996;Pruzzo et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Ecological determinants of the occurrence and dynamics of Vibrio parahaemolyticus in offshore areas

et al. 2011

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The life cycle of Vibrio parahaemolyticus has been conventionally associated with estuarine areas characterized by moderate salinity and warm seawater temperatures. Recent evidence suggests that the distribution and population dynamics of V. parahaemolyticus may be shaped by the existence of an oceanic transport of communities of this organism mediated by zooplankton. To evaluate this possibility, the presence of V. parahaemolyticus in the water column of offshore areas of Galicia was investigated by PCR monthly over an 18-month period. Analysis of zooplankton and seawater showed that the occurrence of V. parahaemolyticus in offshore areas was almost exclusively associated with zooplankton and was present in 80% of the samples. The influence of environmental factors assessed by generalized additive models revealed that the abundance and seasonality of V. parahaemolyticus in zooplankton was favoured by the concurrence of downwelling periods that promoted the zooplankton patchiness. These results confirm that offshore waters may be common habitats for V. parahaemolyticus, including strains with virulent traits. Additionally, genetically related populations were found in offshore zooplankton and in estuaries dispersed along 1500 km. This finding suggests that zooplankton may operate as a vehicle for oceanic dispersal of V. parahaemolyticus populations, connecting distant regions and habitats, and thereby producing impacts on the local community demography and the spread of Vibrio-related diseases.

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Section: Discussioncontrasting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ecological determinants of the occurrence and dynamics of Vibrio parahaemolyticus in offshore areas

et al. 2011

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“…Most of the Vibrio genomes in our data set were capable of complete chitin hydrolysis, which is consistent with their known ecology. Vibrios can be found in a range of aquatic habitats and have one of the most wellstudied chitinolytic systems of any prokaryote (Keyhani and Roseman, 1999;Xibing Li and Roseman, 2004;Pruzzo et al, 2008). While a high proportion of CHI-positive genotypes (73.75%) were also positive for NAG, we detected potential for CHI production without the potential for NAG production in a few groups within the Firmicutes phylum ( Figure 3).…”

Section: Discussionmentioning

confidence: 92%

Microdiversity of extracellular enzyme genes among sequenced prokaryotic genomes

2013

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Understanding the relationship between prokaryotic traits and phylogeny is important for predicting and modeling ecological processes. Microbial extracellular enzymes have a pivotal role in nutrient cycling and the decomposition of organic matter, yet little is known about the phylogenetic distribution of genes encoding these enzymes. In this study, we analyzed 3058 annotated prokaryotic genomes to determine which taxa have the genetic potential to produce alkaline phosphatase, chitinase and b-N-acetyl-glucosaminidase enzymes. We then evaluated the relationship between the genetic potential for enzyme production and 16S rRNA phylogeny using the consenTRAIT algorithm, which calculated the phylogenetic depth and corresponding 16S rRNA sequence identity of clades of potential enzyme producers. Nearly half (49.2%) of the genomes analyzed were found to be capable of extracellular enzyme production, and these were non-randomly distributed across most prokaryotic phyla. On average, clades of potential enzymeproducing organisms had a maximum phylogenetic depth of 0.008004-0.009780, though individual clades varied broadly in both size and depth. These values correspond to a minimum 16S rRNA sequence identity of 98.04-98.40%. The distribution pattern we found is an indication of microdiversity, the occurrence of ecologically or physiologically distinct populations within phylogenetically related groups. Additionally, we found positive correlations among the genes encoding different extracellular enzymes. Our results suggest that the capacity to produce extracellular enzymes varies at relatively fine-scale phylogenetic resolution. This variation is consistent with other traits that require a small number of genes and provides insight into the relationship between taxonomy and traits that may be useful for predicting ecological function.

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“…Interestingly, however, all trh-and Kanagawa-positive strains were isolated from sediment samples. Organisms that are able to persist in sediment biofilms will more likely be able to colonize other tissues such as skin or the intestinal tract [73]; thus, the role of sediments in putting forth pathogenic clones could be an interesting aspect for future investigations.…”

Section: Discussionmentioning

confidence: 99%

Temporal and Spatial Distribution Patterns of Potentially Pathogenic Vibrio spp. at Recreational Beaches of the German North Sea

Böer

Heinemeyer²,

Luden³

et al. 2013

Microb Ecol

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The number of reported Vibrio-related wound infections associated with recreational bathing in Northern Europe has increased within the last decades. In order to study the health risk from potentially pathogenic Vibrio spp. in the central Wadden Sea, the seasonal and spatial distribution of Vibrio vulnificus, Vibrio parahaemolyticus, Vibrio alginolyticus and Vibrio cholerae were investigated at ten recreational beaches in this area over a 2-year period. V. alginolyticus and V. parahaemolyticus were found to be omnipresent all year round in the study area, while V. vulnificus occurrence was restricted to summer months in the estuaries of the rivers Ems and Weser. Multiple linear regression models revealed that water temperature is the most important determinant of Vibrio spp. occurrence in the area. Differentiated regression models showed a species-specific response to water temperature and revealed a particularly strong effect of even minor temperature increases on the probability of detecting V. vulnificus in summer. In sediments, Vibrio spp. concentrations were up to three orders of magnitude higher than in water. Also, V. alginolyticus and V. parahaemolyticus were found to be less susceptible towards winter temperatures in the benthic environment than in the water, indicating an important role of sediments for Vibrio ecology. While only a very small percentage of tested V. parahaemolyticus proved to be potentially pathogenic, the presence of V. vulnificus during the summer months should be regarded with care.

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Global impact of Vibrio cholerae interactions with chitin

Cited by 243 publications

References 91 publications

Ecological determinants of the occurrence and dynamics of Vibrio parahaemolyticus in offshore areas

Ecological determinants of the occurrence and dynamics of Vibrio parahaemolyticus in offshore areas

Microdiversity of extracellular enzyme genes among sequenced prokaryotic genomes

Temporal and Spatial Distribution Patterns of Potentially Pathogenic Vibrio spp. at Recreational Beaches of the German North Sea

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