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Antifungal and root surface colonization properties of GFP-tagged Paenibacillus brasilensis PB177
Södertörn University, School of Life Sciences. Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
Södertörn University, School of Life Sciences. SLU.
2005 (English)In: World Journal of Microbiology & Biotechnology, ISSN 0959-3993, E-ISSN 1573-0972, Vol. 21, no 8-9, 1591-1597 p.Article in journal (Refereed) Published
Abstract [en]

This study evaluates the potential of Paenibacillus brasilensis strain PB177 to inhibit phytopathogenic fungi commonly causing maize diseases and to colonize maize plants. In vitro assays demonstrated antagonistic activity against the fungal pathogens, Fusarium moniliforme and Diplodia macrospora. The PB177 strain was tagged with the gfp gene, encoding the green fluorescent protein (GFP) and GFP-tagged bacteria were detected attached to maize roots by stereo- and confocal microscopy. The GFP-tagged bacteria were also used to treat maize seeds before challenging the seeds with two phytopathogenic fungi. The results demonstrated that the bacterial cells are mobilized to the maize roots in the presence of the fungal pathogens. The ability of P. brasilensis PB177 to inhibit fungal growth in vitro and its capability of colonization of maize roots in vivo suggest a potential application of this strain as a biological control agent. This is the first report on the successful introduction of the GFP marker gene into a P. brasilensis strain, enabling the direct observation of these promising plant growth promoting bacteria on maize roots in situ.

Place, publisher, year, edition, pages
2005. Vol. 21, no 8-9, 1591-1597 p.
National Category
Microbiology
Identifiers
URN: urn:nbn:se:sh:diva-14433DOI: 10.1007/s11274-005-8123-3ISI: 000234411400040Scopus ID: 2-s2.0-30044438906OAI: oai:DiVA.org:sh-14433DiVA: diva2:487462
Available from: 2012-01-31 Created: 2011-12-23 Last updated: 2014-04-23Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
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  • modern-language-association-8th-edition
  • vancouver
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More styles
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  • de-DE
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  • asciidoc
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