The Family Aeromonadaceae

Huys, Geert

doi:10.1007/978-3-642-38922-1_282

Cited by 18 publications

(12 citation statements)

References 355 publications

(391 reference statements)

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“…Members of this genus may be opportunistic pathogens in humans and animals, in which they can cause a range of extraintestinal infections or diarrheal diseases. However, information on their metabolism and ecology is relatively scarce (Huys,). Furthermore, a wild cottonmouth snake study purported an interesting conclusion that the increased prevalence of Proteobacteria suggests a gut microbiome more similar to that of birds (Colston et al, ).…”

Section: Discussionmentioning

confidence: 99%

Characterizing the microbiota in gastrointestinal tract segments of Rhabdophis subminiatus: Dynamic changes and functional predictions

et al. 2019

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The gut microbiota helps the host to absorb nutrients and generate immune responses that can affect host behavior, development, reproduction, and overall health. However, in most of the previous studies, microbiota was sampled mainly using feces and intestinal contents from mammals but not from wild reptiles. Here, we described the bacterial profile from five different gastrointestinal tract (GIT) segments (esophagus, stomach, small intestine, large intestine, and cloaca) of three wild Rhabdophis subminiatus using 16S rRNA V4 hypervariable amplicon sequencing. Forty‐seven bacterial phyla were found in the entire GIT, of which Proteobacteria, Firmicutes, and Bacteroidetes were predominant. The results showed a significant difference in microbial diversity between the upper GIT segments (esophagus and stomach) and lower GIT segments (large intestine and cloaca). An obvious dynamic distribution of Fusobacteria and Bacteroidetes was observed, which mainly existed in the lower GIT segments. Conversely, the distribution of Tenericutes was mainly observed in the upper GIT. We also predicted the microbial functions in the different GIT segments, which showed that microbiota in each segments played an important role in higher membrane transport and carbohydrate and amino acid metabolism. Microbes in the small intestine were also mainly involved in disease‐related systems, while in the large intestine, they were associated with membrane transport and carbohydrate metabolism. This is the first study to investigate the distribution of the gut microbiota and to predict the microbial function in R. subminiatus . The composition of the gut microbiota certainly reflects the diet and the living environment of the host. Furthermore, these findings provide vital evidence for the diagnosis and treatment of gut diseases in snakes and offer a direction for a model of energy budget research.

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Section: Discussionmentioning

confidence: 99%

Characterizing the microbiota in gastrointestinal tract segments of Rhabdophis subminiatus: Dynamic changes and functional predictions

et al. 2019

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“…This genus was previously detected in earthworm gut contents and is a member of the family Aeromonadaceae (15,29,33,40,41). Aeromonas is a metabolically robust genus, and affiliated species utilize formate hydrogenlyase in various fermentations and are capable of anaerobic respiration and dissimilatory metal reduction (46)(47)(48), properties that enhance the competitiveness of this genus under anoxic conditions. Aeromonas-affiliated species ferment saccharides to ethanol and organic acids (including succinate, acetate, and formate), but to our knowledge, the production of propionate has not been reported for this taxon (47)(48)(49)(50).…”

Section: Aeromonadaceae Aeromonas-affiliated Phylotype a [Lt838791]mentioning

confidence: 99%

“…Aeromonas is a metabolically robust genus, and affiliated species utilize formate hydrogenlyase in various fermentations and are capable of anaerobic respiration and dissimilatory metal reduction (46)(47)(48), properties that enhance the competitiveness of this genus under anoxic conditions. Aeromonas-affiliated species ferment saccharides to ethanol and organic acids (including succinate, acetate, and formate), but to our knowledge, the production of propionate has not been reported for this taxon (47)(48)(49)(50). Based on its relative abundance of 16S rRNA, this phylotype responded very quickly (i.e., in the first 10 h of incubation) to anoxia, and glucose augmented this response (Table 3), illustrating the marked anaerobic ability of this phylotype.…”

Section: Aeromonadaceae Aeromonas-affiliated Phylotype a [Lt838791]mentioning

confidence: 99%

Differential Engagement of Fermentative Taxa in Gut Contents of the Earthworm Lumbricus terrestris

Meier

Hunger

Drake

2018

Appl Environ Microbiol

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The earthworm gut is an anoxic, saccharide-rich microzone in aerated soils. The apparent degradation of diverse saccharides in the alimentary canal of the model earthworm is concomitant with the production of diverse organic acids, indicating that fermentation is an ongoing process in the earthworm gut. However, little is known about how different gut-associated saccharides are fermented. The hypothesis of this investigation was that different gut-associated saccharides differentially stimulate fermentative microorganisms in gut contents of This hypothesis was addressed by (i) assessing the fermentation profiles of anoxic gut content microcosms that were supplemented with gut-associated saccharides and (ii) the concomitant phylogenic analysis of 16S rRNA sequences. Galactose, glucose, maltose, mannose, arabinose, fucose, rhamnose, and xylose stimulated the production of fermentation products, including H, CO, acetate, lactate, propionate, formate, succinate, and ethanol. Fermentation profiles were dependent on the supplemental saccharide (e.g., glucose yielded large amounts of H and ethanol, whereas fucose did not, and maltose yielded large amounts of lactate, whereas mannose did not). Approximately 1,750,000 16S rRNA sequences were affiliated with 37 families, and phylogenic analyses indicated that a respective saccharide stimulated a subset of the diverse phylotypes. An -related phylotype displayed a high relative abundance in all treatments, whereas key-affiliated phylotypes were stimulated by some but not all saccharides. Collectively, these results reinforce the likelihood that (i) different saccharides stimulate different fermentations in gut contents of the earthworm and (ii) facultative aerobes related to and can be important drivers of these fermentations. The feeding habits of earthworms influence the turnover of elements in the terrestrial biosphere. The alimentary tract of the earthworm constitutes an anoxic saccharide-rich microzone in aerated soils that offers ingested microbes a unique opportunity for anaerobic growth. The fermentative activity of microbes in the alimentary tract are responsible for the production of (i) organic compounds that can be assimilated by the earthworm and (ii) H that is subject to emission by the earthworm and can be trophically linked to secondary microbial events in soils. To gain insight on how fermentative members of the gut microbiome might respond to the saccharide-rich alimentary canal, this study examines the impact of diverse gut-associated saccharides on the differential activation of fermentative microbes in gut contents of the model earthworm.

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“…The genus Aeromonas , which belongs to the family Aeromonadaceae along with four other genera Telumonas , Oceanimonas , Oceanisphaera and Zobellella , is composed of a large number of species classified within 17 DNA-hybridization groups (HG) or genomospecies, and 14 phenospecies [1,2,3,4,5]. These Gram-negative rods are typically found in aquatic environments, e.g., freshwater, estuarine and coastal water, seawater, drinking water supplies, polluted waters, marine, and freshwater sediment and sand.…”

Section: Introductionmentioning

confidence: 99%

“…strains are pathogenic to poikilothermic animals including amphibians, fish, and reptiles. They also can be associated with infections of birds and mammals [4,5,6]. In fish, non-motile psychrophilic species of Aeromonas salmonicida subsp.…”

Section: Introductionmentioning

confidence: 99%

Structural and Serological Studies of the O6-Related Antigen of Aeromonas veronii bv. sobria Strain K557 Isolated from Cyprinus carpio on a Polish Fish Farm, which Contains l-perosamine (4-amino-4,6-dideoxy-l-mannose), a Unique Sugar Characteristic for Aeromonas Serogroup O6

et al. 2019

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Amongst Aeromonas spp. strains that are pathogenic to fish in Polish aquacultures, serogroup O6 was one of the five most commonly identified immunotypes especially among carp isolates. Here, we report immunochemical studies of the lipopolysaccharide (LPS) including the O-specific polysaccharide (O-antigen) of A. veronii bv. sobria strain K557, serogroup O6, isolated from a common carp during an outbreak of motile aeromonad septicemia (MAS) on a Polish fish farm. The O-polysaccharide was obtained by mild acid degradation of the LPS and studied by chemical analyses, mass spectrometry, and 1H and 13C NMR spectroscopy. It was revealed that the O-antigen was composed of two O-polysaccharides, both containing a unique sugar 4-amino-4,6-dideoxy-L-mannose (N-acetyl-L-perosamine, L-Rhap4NAc). The following structures of the O-polysaccharides (O-PS 1 and O-PS 2) were established:

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The Family Aeromonadaceae

Cited by 18 publications

References 355 publications

Characterizing the microbiota in gastrointestinal tract segments of Rhabdophis subminiatus: Dynamic changes and functional predictions

Characterizing the microbiota in gastrointestinal tract segments of Rhabdophis subminiatus: Dynamic changes and functional predictions

Differential Engagement of Fermentative Taxa in Gut Contents of the Earthworm Lumbricus terrestris

Structural and Serological Studies of the O6-Related Antigen of Aeromonas veronii bv. sobria Strain K557 Isolated from Cyprinus carpio on a Polish Fish Farm, which Contains l-perosamine (4-amino-4,6-dideoxy-l-mannose), a Unique Sugar Characteristic for Aeromonas Serogroup O6

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