NDLI: Interaction of bacteria-feeding soil flagellates and Pseudomonas spp.

Content Provider	Springer Nature Link
Author	Pedersen, Annette L. Ekelund, Flemming Johansen, Anders Winding, Anne
Copyright Year	2009
Abstract	Pseudomonas strains may be used as alternatives to fungicides as some of them produce secondary metabolites, which can inhibit growth of plant pathogenic fungi. Increased knowledge of non-target effects of the antagonistic bacteria on other soil organisms as well as of the survival and predation resistance of the antagonistic bacteria is necessary for risk assessment and increased performance of antagonistic bacteria as biological control agents. In the present study, we aimed to investigate the difference between Pseudomonas spp. with respect to their predation resistance to and effects on the three different and common soil flagellates Bodo caudatus, Cercomonas longicauda, and Neocercomonas jutlandica. Two antagonistic Pseudomonas: Pseudomonas fluorescens CHA0 and P. fluorescens DR54 and two positive control strains: P. fluorescens DSM 50090T and Pseudomonas chlororaphis ATCC 43928 were studied. CHA0, which is reported to produce a range of different antibiotic substances, was inhibitory to all the tested flagellates whereas DR54, which produces viscosinamide, only inhibited the growth rate of B. caudatus. Removal of spent medium from a CHA0 culture reduced the growth inhibition of C. longicauda, although the growth rate was still lowered compared with DSM 50090T. In contrast, removal of spent medium from a DR54 culture had minor effect on C. longicauda. The flagellate B. caudatus was far more sensitive towards the antagonistic Pseudomonas strains of the tested flagellates.
Starting Page	151
Ending Page	158
Page Count	8
File Format	PDF
ISSN	01782762
Journal	Biology and Fertility of Soils
Volume Number	46
Issue Number	2
e-ISSN	14320789
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-11-12
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pseudomonas Flagellates Antifungal metabolites Microbial pest control agents Soil ecology Soil Science & Conservation Agriculture
Content Type	Text
Resource Type	Book Review
Subject	Agronomy and Crop Science Soil Science Microbiology

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