Bacteria with antimicrobial properties isolated from the Mediterranean sponges Chondrilla nucula and Petrosia ficiformis

Characterisation and antimicrobial activity of epibiotic bacteria from Petrosia ficiformis (Porifera, Demospongiae)

Numerous natural products from marine invertebrates show striking structural similarities to known metabolites of microbial origin, suggesting that microorganisms (bacteria, microalgae) are at least involved in their biosynthesis or are in fact the true sources of these respective metabolites. The viable epibiotic microbial community of the marine sponge Petrosia ficiformis was screened and cha...

Kangiella spongicola sp. nov., a halophilic marine bacterium isolated from the sponge Chondrilla nucula.

A novel halophilic bacterium of the genus Kangiella was isolated from a marine sponge collected from the Florida Keys, USA. Strain A79(T), an aerobic, Gram-negative, non-motile, rod-shaped bacterium, grew in 2-15 % (w/v) NaCl, at a temperature of 10-49 °C and at pH 4.5-10. Phylogenetic analysis placed strain A79(T) in the family Alcanivoraceae in the class Gammaproteobacteria. Strain A79(T) sho...

Investigation of bacteria with polyketide synthase genes and antimicrobial activity isolated from South China Sea sponges.

AIMS To obtain bacteria with PKS (polyketide synthase) genes and antimicrobial activity from sponges. METHODS AND RESULTS Eighteen bacteria with KS (ketosynthase) genes were identified by polymerase chain reaction (PCR) screening of 98 isolates from South China Sea sponges, Stelletta tenuis, Halichondria rugosa, Dysidea avara and Craniella australiensis. 16S rRNA gene-based Blast analysis ind...

Sertoli-like cells in Raspaciona aculeata and Petrosia ficiformis

Isolation and phylogenetic analysis of bacteria with antimicrobial activities from the Mediterranean sponges Aplysina aerophoba and Aplysina cavernicola.

The aim of this study was to isolate bacteria with antimicrobial activities from the marine sponges Aplysina aerophoba and Aplysina cavernicola. The obtained 27 isolates could be subdivided into eight phylogenetically different clusters based on comparative sequence analysis of their 16S rDNA genes. The sponge isolates were affiliated with the low (Bacillus) and high G+C Gram-positive bacteria ...