scholarly journals Functional Tn5393-Like Transposon in the R Plasmid pRAS2 from the Fish Pathogen Aeromonas salmonicida subspecies salmonicida Isolated in Norway

2000 ◽  
Vol 66 (12) ◽  
pp. 5533-5535 ◽  
Author(s):  
Trine M. L'Ab�e-Lund ◽  
Henning S�rum
Keyword(s):  
Ecological Niche ◽  
Aeromonas Salmonicida ◽  
Fish Pathogen ◽  
Agricultural Habitat ◽  
First Time

ABSTRACT Tn5393c containing strA-strB was identified as part of R plasmid pRAS2 from the fish pathogen Aeromonas salmonicida subsp. salmonicida. This is the first time an intact and active transposon in the Tn5393 family has been reported in an ecological niche other than an agricultural habitat.

AsaGEI2d: a new variant of a genomic island identified in a group of Aeromonas salmonicida subsp. salmonicida isolated from France, which bears the pAsa7 plasmid

2021 ◽  
Author(s):  
Antony T Vincent ◽  
Laurent Intertaglia ◽  
Victor Loyer ◽  
Valérie E Paquet ◽  
Émilie Adouane ◽  
...  
Keyword(s):  
Genomic Island ◽  
Insertion Site ◽  
Aeromonas Salmonicida ◽  
Genomic Islands ◽  
The Other ◽  
Fish Pathogen ◽  
Integrase Gene ◽  
New Variant ◽  
Cat Gene ◽  
Unique Genes

Abstract Genomic islands (Aeromonas salmonicida genomic islands, AsaGEIs) are found worldwide in many isolates of Aeromonas salmonicida subsp. salmonicida, a fish pathogen. To date, five variants of AsaGEI (1a, 1b, 2a, 2b and 2c) have been described. Here, we investigate a sixth AsaGEI, which was identified in France between 2016 and 2019 in 20 A. salmonicida subsp. salmonicida isolates recovered from sick salmon all at the same location. This new AsaGEI shares the same insertion site in the chromosome as the other AsaGEI2s as they all have a homologous integrase gene. This new AsaGEI was thus named AsaGEI2d, and has 5 unique genes compared to the other AsaGEIs. The isolates carrying AsaGEI2d also bear the plasmid pAsa7, which was initially found in an isolate from Switzerland. This plasmid provides resistance to chloramphenicol thanks to a cat gene. This study reveals more about the diversity of the AsaGEIs.

scholarly journals First record of the invasive bee Anthidium manicatum (Hymenoptera: Megachilidae) in Chile

2015 ◽  
pp. 1-5 ◽  
Author(s):  
Jose Miguel Montalva ◽  
Mauro Ríos ◽  
Felipe Vivallo
Keyword(s):  
South America ◽  
New Record ◽  
Ecological Niche ◽  
First Record ◽  
Ecological Niche Model ◽  
Metropolitan Region ◽  
Niche Model ◽  
Invasive Range ◽  
First Time ◽  
Anthidium Manicatum

The Palearctic wool carder bee Anthidium manicatum (Linnaeus) is recorded for the first time in Chile based on eight specimens collected on Lavandula sp. (Lamiaceae) in San Bernardo, Metropolitan Region.  This new record expands the invasive range of this species in South America, confirming previous predictions based on an ecological niche model.

scholarly journals Sesquiterpenoids From the Antarctic Fungus Pseudogymnoascus sp. HSX2#-11

2021 ◽  
Vol 12 ◽  
Author(s):  
Ting Shi ◽  
Xiang-Qian Li ◽  
Li Zheng ◽  
Ya-Hui Zhang ◽  
Jia-Jia Dai ◽  
...  
Keyword(s):  
Pathogenic Fungi ◽  
Antibacterial Activities ◽  
Aeromonas Salmonicida ◽  
Systematic Research ◽  
Cytotoxic Activities ◽  
Hepg2 Cell Lines ◽  
New Compounds ◽  
The Antarctic ◽  
First Time ◽  
Hepatoma Hepg2

The fungal strains Pseudogymnoascus are a kind of psychrophilic pathogenic fungi that are ubiquitously distributed in Antarctica, while the studies of their secondary metabolites are infrequent. Systematic research of the metabolites of the fungus Pseudogymnoascus sp. HSX2#-11 led to the isolation of six new tremulane sesquiterpenoids pseudotremulanes A–F (1–6), combined with one known analog 11,12-epoxy-12β-hydroxy-1-tremulen-5-one (7), and five known steroids (8–12). The absolute configurations of the new compounds (1–6) were elucidated by their ECD spectra and ECD calculations. Compounds 1–7 were proved to be isomeride structures with the same chemical formula. Compounds 1/2, 3/4, 1/4, and 2/3 were identified as four pairs of epimerides at the locations of C-3, C-3, C-9, and C-9, respectively. Compounds 8 and 9 exhibited cytotoxic activities against human breast cancer (MDA-MB-231), colorectal cancer (HCT116), and hepatoma (HepG2) cell lines. Compounds 9 and 10 also showed antibacterial activities against marine fouling bacteria Aeromonas salmonicida. This is the first time to find terpenoids and steroids in the fungal genus Pseudogymnoascus.

scholarly journals Three-dimensional structure of an open form of the surface layer from the fish pathogen Aeromonas salmonicida.

1989 ◽  
Vol 171 (1) ◽  
pp. 190-197 ◽  
Author(s):  
J S Dooley ◽  
H Engelhardt ◽  
W Baumeister ◽  
W W Kay ◽  
T J Trust
Keyword(s):  
Surface Layer ◽  
Three Dimensional ◽  
Aeromonas Salmonicida ◽  
Open Form ◽  
Dimensional Structure ◽  
Fish Pathogen ◽  
Three Dimensional Structure

scholarly journals The genome of Aeromonas salmonicida subsp. salmonicida A449: insights into the evolution of a fish pathogen

BMC Genomics ◽  
2008 ◽  
Vol 9 (1) ◽  
pp. 427 ◽  
Author(s):  
Michael E Reith ◽  
Rama K Singh ◽  
Bruce Curtis ◽  
Jessica M Boyd ◽  
Anne Bouevitch ◽  
...  
Keyword(s):  
Aeromonas Salmonicida ◽  
Fish Pathogen
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