Beneficial effects of 2,4-diacetylphloroglucinol- producing pseudomonads on the marine alga Saccharina latissima

Nagel, Kerstin, Schneemann, Imke, Kajahn, Inga, Labes, Antje, Wiese, Jutta and Imhoff, Johannes F. (2012) Beneficial effects of 2,4-diacetylphloroglucinol- producing pseudomonads on the marine alga Saccharina latissima Aquatic Microbial Ecology, 67 (3). pp. 239-249. DOI 10.3354/ame01595.

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Abstract

Pseudomonas strains were shown to be regularly associated with the brown macroalga Saccharina latissima from the Baltic Sea, studied over several years, and were identified as producers of the antimicrobially active compound 2,4-diacetylphloroglucinol. These findings support the assumption of a stable association between the Pseudomonas spp. strains and S. latissima in the Baltic Sea. The metabolite profile of the Pseudomonas spp. comprised monoacetylphloroglucinol, 2,4-diacetylphloroglucinol, pyoluteorin and several rhizoxins, which exhibited broad-spectrum antibiotic activities against Gram-positive and Gram-negative bacteria as well as against fungi. Because the antibiotic activities included the inhibition of the 2 algal pathogens Pseudoalteromonas elyakovii and Algicola bacteriolytica, we propose a beneficial effect of these marine pseudomonads on their host S. latissima.

Document Type: Article
Additional Information: WOS:000310730700005
Keywords: Pseudomonas protegens · Alga–bacteria association · 2,4-diacetylphloroglucinol · Pyoluteorin · Rhizoxin · Brown macroalgae; RESISTANT STAPHYLOCOCCUS-AUREUS; FLUORESCENT PSEUDOMONAS; LAMINARIA-SACCHARINA; SECONDARY METABOLITES; IN-VITRO; BACTERIA; PF-5; JAPONICA; STRAINS; AGENT
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-MI Marine Microbiology
OceanRep > GEOMAR > Applied R&D > Centre for Marine Substances (KiWiZ)
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
DOI etc.: 10.3354/ame01595
ISSN: 0948-3055
Projects: KIWIZ, Future Ocean
Date Deposited: 05 Nov 2012 13:48
Last Modified: 03 Nov 2016 00:38
URI: http://eprints.uni-kiel.de/id/eprint/19108

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