Characterization of a planctomycete associated with the marine dinoflagellate Prorocentrum micans Her

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

lage, om (Autor) FCUP

Revista

Título: Antonie van Leeuwenhoek, International Journal of General and Molecular Microbiology

Vol. 104

Páginas: 499-508

ISSN: 0003-6072

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 10 Citações

Scopus - 11 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Ciências biológicas

Outras Informações

ID Authenticus: P-006-6XX

DOI: 10.1007/s10482-013-9991-4

Abstract (EN): During attempts to obtain axenic the cultures of the marine dinoflagellate Prorocentrum micans, a microorganism with peculiar features was isolated. This contaminant resisted the physical and antibiotic treatments performed. Subsequent characterization showed that in agar plates this microorganism develops round granular pink colonies. It is a salt-dependent mesophilic and chemoheterotrophic Gram negative bacterium with a rod to ovoid shape, presenting cell motility in young cultures. Cell division occurs by cell budding. The bacterium forms aggregates with a variable number of cells that are stacked by fibrillar glycoproteic material, the holdfast. A tuft of numerous short glycoproteic fimbriae emerges from one pole of the cell. Preeminent granular inclusions, also of glycoproteic nature, are present in the cytoplasm. Several structural and compositional aspects of the cell envelope and cytoplasm are provided. The production of fibrillar material and the existence of the polar appendages suggest that this microorganism should occur in aquatic environments bound to substrates and could be associated with P. micans in natural marine habitats. Based on the characteristics displayed, this microorganism is a member of the Planctomycetes, order Planctomycetales.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10