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

• Type: Article in International Scientific Journal
• Date: 2013

Authors

lage, om (Author) FCUP

Journal

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

Vol. 104

Pages: 499-508

ISSN: 0003-6072

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 11 Citations

Scientific classification

FOS: Natural sciences > Biological sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10