Kerstin Kosch

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The nucleotide sequence of a 8330-bp DNA fragment from Bradyrhizobium japonicum 110spc4 was determined. Sequence analysis revealed that six ORFs were present and the deduced amino acid sequences were homologous to enzymes involved in exopolysaccharide (EPS) biosynthesis. The genes appear to be organized into at least four different operons. One gene was(More)
The nodulation competitiveness of 17 Rhizobium leguminosarum bv. phaseoli and 3 R. tropici strains was analysed in growth pouches, at pH 5.2 and 6.4. All 20 strains were coinoculated with a gus + strain of R. leguminosarum bv. phaseoli strain KIM5s. The gus+ phenotype, carrying the glucuronidase gene, was used to type nodules directly in the growth pouches.(More)
DIETRICH WERNER, BETTINA AHLBORN, HANI ANTOUN*, SIMONE BERNARD, CHRISTINA BOLANOS, JAMES E. COOPER**, ELISABETH GÖRGE, ANDREAS JACOBI, PAPADOPOULOU KALLIOPI***, RÜDIGER KAPE, PANAGIOTIS KATINAKIS***, KERSTIN KOSCH, PETER MÜLLER, MARTIN PARNISKE, PETRA SCHMIDT, WOLFGANG STREIT and ASTRID WETZEL Fachbereich Biologie, Philipps-Universität,(More)
A DNA probe specific for biocontrol strains of Pseudomonas was produced by screening randomly amplified polymorphic DNA (RAPD) PCR fragments. Specificity of the probe was assessed by dot blot and colony hybridization. It was used to specifically determine the population of these strains on roots of Cucumis sativus cv. Delikatess. Two polymorphic RAPD(More)
a Fachbereich Biologie, Botanisches Institut der Philipps-Universität, Karl-von-Frisch-Straße, D-35032 Marburg/Lahn, Bundesrepublik Deutschland b Max-Planck-Institut für Züchtungsforschung, Carl-von Linne-Weg 10, D-50829 Köln, Bundesrepublik Deutschland Z. Naturforsch. 49c, 727-736 (1994); received August 3, 1994 Bradyrhizobium, Exopolysaccharides,(More)
Original Communications ß-Carboline Alkaloids from Ribes nigrum L. The deletion mutant Bradyrhizobium japonicum AP22 produces a structurally altered exo-polysaccharide. The nodulation of two cultivars each of Glycine max and Glycine soja, and cultivars of Macroptilium atropurpureum and Vigna radiata, infected with this mutant was examined in order to(More)
After a short summary on the ecology and rhizosphere biology of symbiotic bacteria and vesicular-arbuscular (VA) mycorrhiza fungi and their application as microbial inocula, results on competitiveness and communication are summarized. Stress factors such as high temperature, low soil pH, aluminium concentrations and phytoalexins produced by the host plants(More)
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