<i>Shewanella</i>

Bowman, JP

doi:10.1002/9781118960608.gbm01100

Cited by 5 publications

(1 citation statement)

References 121 publications

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“…More than 50 species of Shewanella have been reported [ 2 , 3 ]. They can grow anaerobically by reduction of various sulfur compounds to H 2 S, including thiosulfate and sulfite [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Phylogeny ofShewanella haliotisIsolated from Cultivated Shellfish in Taiwan

Liu

Tseng

et al. 2018

Canadian Journal of Infectious Diseases and Medical Microbiolog

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Shewanella haliotis is an emerging human pathogen. Many infectious cases were linked to shellfish ingestion or aquatic exposure. Therefore, it is important to study the phylogeny and distribution of S. haliotis in shellfish aquaculture. We investigated the distribution of S. haliotis in cultivated shellfish farming in Taiwan in which S. haliotis was found in the shellfish from all sampling sites. S. haliotis was identified in cultivated shellfish by 16S rRNA gene sequencing, such as abalone (Haliotis diversicolor), clam (Meretrix lusoria), and oyster (Crassostrea gigas). This study highlighted the contamination of S. haliotis in cultivated shellfish and importance of further study regarding the biodiversity and pathogenesis of S. haliotis.

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“…More than 50 species of Shewanella have been reported [ 2 , 3 ]. They can grow anaerobically by reduction of various sulfur compounds to H 2 S, including thiosulfate and sulfite [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Phylogeny ofShewanella haliotisIsolated from Cultivated Shellfish in Taiwan

Liu

Tseng

et al. 2018

Canadian Journal of Infectious Diseases and Medical Microbiolog

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Shewanella psychromarinicola sp. nov., a psychrophilic bacterium isolated from pelagic sediment of the Ross Sea (Antarctica), and reclassification of Shewanella arctica Kim et al. 2012 as a later heterotypic synonym of Shewanella frigidimarina Bowman et al. 1997

Hwang

Jang

Cho

et al. 2019

International Journal of Systematic and Evolutionary Microbiology

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Disparate effects of antibiotic-induced microbiome change and enhanced fitness inDaphnia magna

Motiei

Brindefalk

Ogonowski

et al. 2019

Preprint

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13It is a common view that an organism's microbiota has a profound influence on host fitness; 14 however, supporting evidence is lacking in many organisms. We manipulated the gut 15 microbiome of Daphnia magna by chronic exposure to different concentrations of the 16 antibiotic Ciprofloxacin (0.01 -1 mg L -1 ), and evaluated whether this affected the animals' 17 fitness and antioxidant capacity. In line with our expectations, antibiotic exposure altered the 18 microbiome in a concentration-dependent manner. However, contrary to these expectations, 19 the reduced diversity of gut bacteria was not associated with any fitness detriment. Moreover, 20 the growth-related parameters correlated negatively with diversity indices; and, in the 21 daphnids exposed to the lowest ciprofloxacin concentrations, the antioxidant capacity, 22 growth, and fecundity were even higher than in control animals. These findings suggest that 23 ciprofloxacin exerts direct stimulatory effects on growth and reproduction in Daphnia, while 24 microbiome-mediated effects are of lesser importance. Thus, although microbiome profiling 25 of Daphnia may be a sensitive tool to identify early effects of antibiotic exposure, 26 disentangling direct and microbiome-mediated effects on host fitness is not straightforward. 27 68 sequencing (22 , 23). Regardless of the sequencing platform, origin of specimens, and culture 69 conditions, the core microbiome appears relatively stable, mainly comprised of 70 Betaproteobacteria, Gammaproteobacteria and facultative anaerobic Bacteroidetes species. 71At the genus level, Limnohabitans has been reported as one of the most stable and dominant 72 members in Daphnia gut, and variations in its abundance have been tied to the animal 73 fecundity (22). Although some studies have addressed the dependence of Daphnia on its 74 microbiota (9) and some short-term effects on fitness following exposure to antibiotics have 75 been observed in Daphnia magna (25, 13), the relationship between microflora perturbation 76 and host fitness is still unclear, as is the involvement and modulating role of antioxidants in 77 these relationships. 78In this study, the relationship between antibiotic-mediated gut microbiome modulation and 79 host fitness were addressed experimentally using a model cladoceran Daphnia magna. We 80 monitored changes in the gut microbiome, host longevity, growth, and reproduction, as well 81 as antioxidant levels in the exposed animals following ciprofloxacin exposure. We 82 hypothesized that the diversity and abundance of the gut-associated microflora would 83 decrease with increasing concentration of antibiotics. Furthermore, we expected longer 84 exposure time and higher antibiotic concentrations to have negative effects on somatic 85 growth, reproductive output, and antioxidant capacity. These reductions we expected would 86 be due to reduced bacterial diversity in particular, and to some extent, an altered community 87 composition. These hypotheses were tested by combining (1) long-term (21 d) exposure...

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Shewanella

Cited by 5 publications

References 121 publications

Characteristics and Phylogeny ofShewanella haliotisIsolated from Cultivated Shellfish in Taiwan

Characteristics and Phylogeny ofShewanella haliotisIsolated from Cultivated Shellfish in Taiwan

Shewanella psychromarinicola sp. nov., a psychrophilic bacterium isolated from pelagic sediment of the Ross Sea (Antarctica), and reclassification of Shewanella arctica Kim et al. 2012 as a later heterotypic synonym of Shewanella frigidimarina Bowman et al. 1997

Disparate effects of antibiotic-induced microbiome change and enhanced fitness inDaphnia magna

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