Characterization of biosurfactant-producing strains of fluorescent pseudomonads in a soilless cultivation system

Abstract

The use of biosurfactants is a promising alternative in biological control of zoospore-producing plant pathogens. In the present study, biosurfactant production by the indigenous population of fluorescent pseudomonads in a soilless plant cultivation system was studied during the growing season. A total of 600 strains was screened and of these 18.5% were observed to produce biosurfactants. Production of both antibiotics and biosurfactant was uncommon among the isolated strains. A selective effect of the cultivation system filter was observed on the biosurfactant-producing strains and these strains were only occasionally observed after the filter, despite having a significantly higher motility than the nonbiosurfactant-producing strains. The majority of biosurfactant-producing strains were isolated from the filter skin, which suggests that this is a suitable surface for inoculation with biocontrol strains

Keywords

biological control; biosurfactants; fluorescent pseudomonads; greenhouse; motility

Published in

Antonie van Leeuwenhoek
2008, Volume: 94, number: 2, pages: 329-334 Publisher: SPRINGER

SLU Authors

• Hultberg, Malin

  • Horticulture, Swedish University of Agricultural Sciences
    

• Bergstrand, Karl-Johan

  • Horticulture, Swedish University of Agricultural Sciences
    

• Khalil, Samar

  • Horticulture, Swedish University of Agricultural Sciences
    

• Alsanius, Beatrix

  • Horticulture, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Horticulture
Fish and Aquacultural Science
Environmental Sciences related to Agriculture and Land-use


Publication identifier

DOI: https://doi.org/10.1007/s10482-008-9250-2

Permanent link to this page (URI)

https://res.slu.se/id/publ/18902