sp. nov., isolated from water system of Atlantic salmon () fry cultured in Chile.

Strain T-12, an orange, Gram-stain-negative, non-motile, rod-shaped strain, was isolated in November 2013 from water samples collected from an Atlantic salmon () fry culturing system at a fish farm in Chile. Phylogenetic analysis based on 16S rRNA sequences (1394 bp) revealed that strain T-12 belonged to the genus , showing close relationships to F-372 (99.48 %) and DS-20 (98.

sp. nov., isolated from water system of Atlantic salmon () smolts cultured in Chile.

Strain LB-N7, a novel Gram-negative, orange, translucent, gliding, rod-shaped bacterium, was isolated from water samples collected from an open system of Atlantic salmon () smolts in a fish farm in Chile during a flavobacterial infection outbreak in 2015. Phylogenetic analysis based on 16S rRNA sequences (1337 bp) revealed that strain LB-N7 belongs to the genus and is closely related to the type strains A2-1 (98.8 %) and R2A45-3 (96.

sp. nov., isolated from a chinstrap penguin chick ().

Strain I-SCBP12n, a novel Gram-stain-negative, aerobic, non-spore-forming, motile-by-gliding and rod-shaped bacterium, was isolated from a chinstrap penguin chick () during a 2015 expedition to the Chilean Antarctic territory. Phylogenetic analysis based on 16S rRNA gene sequencing confirmed that strain I-SCBP12n belonged to the genus , being closely related to strains P3160 (98.52 %), WB 4.

Molecular identification and characterization of associated to the endemic flora of semi-desert climate in Chile.

is a phytopathogenic fungus that infects over 200 plant species and can cause significant crop losses in local and worldwide agricultural industries. However, its presence in the endemic flora in the Coquimbo Region and its impact on local flora have not been studied yet. In order to determine whether spp is present in the native plant in the Coquimbo Region, fifty-two field-samples were analysed.

Legacy and novel flame retardants from indoor dust in Antarctica: Sources and human exposure.

The air humidity in Antarctica is very low and this peculiar weather parameter make the use of flame retardants in research facilities highly needed for safety reasons, as fires are a major risk. Legacy and novel flame retardants (nFRs) including polybrominated diphenyl ethers (PBDEs), hexabromocyclododecanes (HBCDs), 1,2-bis(2,4,6-tribromophenoxy) ethane (BTBPE), Dechlorane Plus (DP), and other nFRs were measured in indoor dust samples collected at research Stations in Antarctica: Gabriel de Castilla, Spain (GCS), Julio Escudero, Chile (JES), and onboard the RRS James Clark Ross, United Kingdom (RRS JCR). The GC-HRMS and LC-MS-MS analyses of dust samples revealed ∑PBDEs of 41.

Genome Sequence of sp. Strain AN3A02, Isolated from Rhizosphere of Deschampsia antarctica Desv., with Antagonism against Botrytis cinerea.

Here, we announce the draft genome sequence of sp. strain AN3A02, isolated from the rhizosphere of one of the only two species of vascular plants existing in the Antarctic continent, Desv. This isolate, which inhibited the mycelial growth of in dual culture, has a genome sequence of 6,778,644 bp, with a G+C content of 60.

Pseudomonas atacamensis sp. nov., isolated from the rhizosphere of desert bloom plant in the region of Atacama, Chile.

The bacterial strain M7D1 was isolated from samples of the rhizosphere of desert bloom plants on the Atacama region located in northern Chile as part of a study intended to isolate nitrifying bacteria in this adverse environment. It was previously identified as belonging to the Pseudomonas fluorescens group. In this study, the phylogenetic analysis of the 16s RNA, gyrA, rpoB and rpoD genes confirmed that this strain belongs to this group, especially Sub Group (SG) Koreensis, but it represents a potential new species.

Zebrafish (Danio rerio) as an animal model for bath infection by Flavobacterium psychrophilum.

Flavobacterium psychrophilum is the causative agent of bacterial cold-water disease and rainbow trout syndrome in freshwater salmonid fish worldwide, generating injuries and high mortality rates. Despite several studies on this bacterium, the infection mechanism remains unknown due to limitations in the employed animal models. In this work, we propose using zebrafish (Danio rerio) as a model for studying bacterial pathogenicity.

Genome Sequence of a Potentially New Species, Strain B2, Isolated from Rhizosphere of Olivillo Trees ().

We announce the draft genome sequence of strain B2, which belongs to a potentially new species, isolated from soil associated with rhizosphere of olivillo trees (). Its size is 4,967,099 bp, and its G+C content is 49.1%.

sp. nov., isolated from an ulcer of a farmed Atlantic salmon (), and emended description of the genus .

A Gram-stain positive, pleomorphic, oxidase-negative, non-motile isolate from the ulcer of a farmed Atlantic salmon (), designated strain T11b, was subjected to a comprehensive taxonomic investigation. A comparative analysis of the 16S rRNA gene sequence showed highest similarities to the type strains of (98.1 %) and and (both 98.

sp. nov. isolated from the penguin .

One slightly beige-white pigmented, Gram-stain-negative, rod-shaped bacterium, strain I-STPP5b, was isolated from the trachea of a Gentoo penguin chick individual () investigated in Fildes Bay, Chilean Antarctic (62° 12' S, 58° 57' W). I-STPP5b consists of a 3.4 Mb chromosome with a DNA G+C content of 44.

Evidence for the facultative intracellular behaviour of the fish pathogen Vibrio ordalii.

Vibrio ordalii is an extracellular, Gram-negative bacterium that produces vibriosis in salmonids. While pathogenesis is not fully understood, this bacterium has numerous likely genes for adhesion, colonization, invasion factors and, as recently suggested, intracellular behaviour. Therefore, this study aimed to clarify possible intracellular behaviour for V.

sp. nov., isolated from a black rock cod fish () from the Chilean Antarctic.

An orange-pigmented, oxidase-positive bacterial strain (I-41R45), isolated from the kidney of a black rock cod fish sampled in the Chilean Antarctic was studied in a polyphasic taxonomic investigation. Cells of the isolate were coccoid and stained Gram-negative. A comparison of the 16S rRNA gene sequence of strain I-41R45 with sequences of type strains of most closely related species showed highest sequence similarities to (98.

Draft Genome Sequence of sp. Strain M7D1, Isolated from the Rhizosphere of Desert Bloom Plants.

We announce the draft genome sequence of sp. strain M7D1, isolated from the rhizosphere of a plant in the Atacama Desert bloom event. The genome sequence had 6,170,633 bp with a G+C content of 59.

Proposal of Pedobacter nototheniae sp. nov., isolated from the spleen of a black rock cod (Notothenia coriiceps, Richardson 1844) from the Chilean Antarctica.

A pink pigmented, Gram-negative, rod-shaped, non-spore-forming bacterium (strain 36B243), was isolated from the spleen of a black rock cod (Notothenia coriiceps, Richardson 1844) in the Chilean Antarctica. Strain 36B243 has a 5.26 Mb chromosome with a DNA G + C content of 35.

First detection of spring viraemia of carp virus in common carp (Cyprinus carpio L.) affected by a septicaemic disease in Mexico.

Spring viraemia of carp (SVC) is an infectious disease responsible for severe economic losses for various cyprinid species, particularly common carp (Cyprinus carpio carpio). The causative agent is the SVC virus (SVCV), a member of the Sprivivirus genus, Rhabdoviridae family, and a List 1 pathogen notifiable by the World Organization for Animal Health. This study describes the diagnosis of an SVCV pathogen isolated in October 2015 from wild common carp inhabiting a natural lagoon in central Mexico.

Isolation characterization, virulence potential of Weissella ceti responsible for weissellosis outbreak in rainbow trout (Oncorhynchus mykiss) cultured in Mexico.

Weissella ceti, a Gram-positive nonmotile bacterium, is currently an emerging pathogen within rainbow trout (Oncorhynchus mykiss) farms in China, Brazil, the United States, and Japan. This study is the first to isolate, identify, and characterize W. ceti isolates from rainbow trout farmed in Mexico.

Cytotoxic activity of Flavobacterium psychrophilum in skeletal muscle cells of rainbow trout (Oncorhynchus mykiss).

Flavobacterium psychrophilum is the etiologic agent of bacterial coldwater disease (BCWD) and rainbow trout fry syndrome (RTFS), which cause significant worldwide losses in aquaculture. Juvenile rainbow trout are particularly susceptible to F. psychrophilum infection, the main external clinical signs of which are extensive necrotic myositis and ulcerative lesions.

Fish skeletal muscle tissue is an important focus of immune reactions during pathogen infection.

Skeletal muscle in mammals can express and secrete immune-related molecules during pathogen infection. Despite in fish is known that classical immune tissues participate in innate immunity, the role of skeletal muscle in this function is poorly understood. To determine the immunocompetence of fish skeletal muscle, juvenile fine flounder (Paralichthys adpersus) were challenged with Vibrio ordalii.

Psychromonas aquatilis sp. nov., isolated from seawater samples obtained in the Chilean Antarctica.

A slightly beige-white pigmented, Gram-staining-negative, rod-shaped bacterium, strain M1A1T, was isolated from seawater samples obtained in Fildes Bay, Antarctica (62°12' S 58° 57' W). Phylogenetic analysis based on nearly full-length 16S rRNA gene sequences showed that the isolate shared 98.4 % 16S rRNA gene sequence identity to the type strain of Psychromonas arctica, but less than 97 % 16S rRNA gene sequence similarities to all other species of the genus Psychromonas.

Isolation of Vibrio tapetis from two native fish species (Genypterus chilensis and Paralichthys adspersus) reared in Chile and description of Vibrio tapetis subsp. quintayensis subsp. nov.

A group of seven Chilean isolates presumptively belonging to Vibrio tapetis was isolated from diseased fine flounders (Paralichthys adspersus) and red conger eel (Genypterus chilensis) experimentally reared in Quintay (Chile). All isolates were confirmed as members of V. tapetis on the basis of matrix-assisted laser desorption ionization time-of-flight MS, 16S rRNA gene sequencing, DNA-DNA hybridization values and G+C content.

Undibacterium danionis sp. nov. isolated from a zebrafish (Danio rerio).

One beige-pigmented, Gram-stain-negative, rod-shaped bacterium, strain E3/4T, was isolated from a zebrafish, Danio rerio. Phylogenetic analysis based on nearly full-length 16S rRNA gene sequences showed that the isolate shared 98.5 % 16S rRNA gene sequence identity to the type strain of Undibacterium macrobrachii and 97.

Survival behaviour and virulence of the fish pathogen Vibrio ordalii in seawater microcosms.

Vibrio ordalii, the causative agent of atypical vibriosis, is a Gram-negative, motile, rod-shaped bacterium that severely affects the salmonid aquaculture industry. V. ordalii has been biochemically, antigenically and genetically characterized.

Iron assimilation and siderophore production by Vibrio ordalii strains isolated from diseased Atlantic salmon Salmo salar in Chile.

Vibrio ordalii is the causative agent of vibriosis in several cultured salmonid species worldwide. Despite its impact on aquaculture, relatively little information is available about its virulence factors. The present study demonstrates for the first time that V.

Genome Sequence of Streptococcus phocae subsp. phocae Strain ATCC 51973T Isolated from a Harbor Seal (Phoca vitulina).

Streptococcus phocae subsp. phocae is a pathogen that affects different pinniped and mammalian species. This announcement reports the genome sequence of the type strain ATCC 51973 isolated in Norway from clinical specimens of harbor seal (Phoca vitulina), revealing interesting genes related to possible virulence factors.