<i>Azadinium poporum</i> from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate

The marine dinophycean genus <i>Azadinium</i> has been identified as the primary source of azaspiracids (AZA), a group of lipophilic phycotoxins known to accumulate in shellfish. Blooms of <i>Azadinium</i> in the southern Atlantic off Argentina have been described from the 19...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Tillmann, Urban, Borel, Claudia Marcela, Barrera, Facundo Matías, Lara, Rubén José, Krock, Bernd, Almandoz, Gastón Osvaldo, Witt, Matthias, Trefault, Nicole
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Naturales
Azadinium
Azaspiracids
Southwestern Atlantic
Argentina
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/128571
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-128571
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Azadinium
Azaspiracids
Southwestern Atlantic
Argentina
spellingShingle Ciencias Naturales
Azadinium
Azaspiracids
Southwestern Atlantic
Argentina
Tillmann, Urban
Borel, Claudia Marcela
Barrera, Facundo Matías
Lara, Rubén José
Krock, Bernd
Almandoz, Gastón Osvaldo
Witt, Matthias
Trefault, Nicole
<i>Azadinium poporum</i> from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate
topic_facet Ciencias Naturales
Azadinium
Azaspiracids
Southwestern Atlantic
Argentina
description The marine dinophycean genus <i>Azadinium</i> has been identified as the primary source of azaspiracids (AZA), a group of lipophilic phycotoxins known to accumulate in shellfish. Blooms of <i>Azadinium</i> in the southern Atlantic off Argentina have been described from the 1990s, but due to a lack of cultures, the diversity of South-Atlantic <i>Azadinium</i> has not yet been fully explored and their toxin production potential is completely unknown. During a spring 2010 research cruise covering the El Rincon (ER) estuarine system (North Patagonian coast, Argentina, Southwestern Atlantic) a search was conducted for the presence of <i>Azadinium</i>. Although neither <i>Azadinium</i> cells nor AZA in field plankton samples were detected, 10 clonal strains of <i>Azadinium poporum</i> were successfuly established by incubation of sediment samples. Argentinean <i>A. poporum</i> were more variable in size and shape than the type description but conformed to it by the presence of multiple pyrenoids with starch sheath, in plate pattern and arrangement, and in the position of the ventral pore located on the left side of the pore plate. In contrast to all previous description of <i>A. poporum</i>, isolates of the Argentinean <i>A. poporum</i> possessed a distinct field of pores on the second antapical plate. Conspecificity of the Argentinean isolates with <i>A. poporum</i> was confirmed by molecular phylogeny of concatenated ITS and LSU rDNA sequences, where all Argentinean isolates together with some Chinese <i>A. poporum</i> strains formed a well-supported ribotype clade within <i>A. poporum</i>. All isolates produced AZA with the same profile, consisting of AZA-2 as the major compound and, to a lesser extent, its phosphated form. This is the first report of a phosphated marine algal toxin. This first confirmation of the presence of AZA producing <i>Azadinium</i> in the Argentinean coastal area underlines the risk of AZA shellfish contamination episodes in the Southwestern Atlantic region.
format Articulo
Articulo
author Tillmann, Urban
Borel, Claudia Marcela
Barrera, Facundo Matías
Lara, Rubén José
Krock, Bernd
Almandoz, Gastón Osvaldo
Witt, Matthias
Trefault, Nicole
author_facet Tillmann, Urban
Borel, Claudia Marcela
Barrera, Facundo Matías
Lara, Rubén José
Krock, Bernd
Almandoz, Gastón Osvaldo
Witt, Matthias
Trefault, Nicole
author_sort Tillmann, Urban
title <i>Azadinium poporum</i> from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate
title_short <i>Azadinium poporum</i> from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate
title_full <i>Azadinium poporum</i> from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate
title_fullStr <i>Azadinium poporum</i> from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate
title_full_unstemmed <i>Azadinium poporum</i> from the Argentine Continental Shelf, Southwestern Atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate
title_sort <i>azadinium poporum</i> from the argentine continental shelf, southwestern atlantic, produces azaspiracid-2 and azaspiracid-2 phosphate
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/128571
work_keys_str_mv AT tillmannurban iazadiniumpoporumifromtheargentinecontinentalshelfsouthwesternatlanticproducesazaspiracid2andazaspiracid2phosphate
AT borelclaudiamarcela iazadiniumpoporumifromtheargentinecontinentalshelfsouthwesternatlanticproducesazaspiracid2andazaspiracid2phosphate
AT barrerafacundomatias iazadiniumpoporumifromtheargentinecontinentalshelfsouthwesternatlanticproducesazaspiracid2andazaspiracid2phosphate
AT lararubenjose iazadiniumpoporumifromtheargentinecontinentalshelfsouthwesternatlanticproducesazaspiracid2andazaspiracid2phosphate
AT krockbernd iazadiniumpoporumifromtheargentinecontinentalshelfsouthwesternatlanticproducesazaspiracid2andazaspiracid2phosphate
AT almandozgastonosvaldo iazadiniumpoporumifromtheargentinecontinentalshelfsouthwesternatlanticproducesazaspiracid2andazaspiracid2phosphate
AT wittmatthias iazadiniumpoporumifromtheargentinecontinentalshelfsouthwesternatlanticproducesazaspiracid2andazaspiracid2phosphate
AT trefaultnicole iazadiniumpoporumifromtheargentinecontinentalshelfsouthwesternatlanticproducesazaspiracid2andazaspiracid2phosphate
bdutipo_str Repositorios
_version_ 1764820452562173956

Ejemplares similares