Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 550255
Title The dynamics of Rhizobium leguminosarum biovar trifolii introduced into soil as determined by immunofluorescence and selective plating techniques
Author(s) Postma, J.; Elsas, J.D. van; Govaert, J.M.; Veen, J.A. van
Source FEMS Microbiology Letters 53 (1988)5. - ISSN 0378-1097 - p. 251 - 259.
Department(s) Institute of Atomic Sciences in Agriculture
Publication type Refereed Article in a scientific journal
Publication year 1988
Abstract After the introduction of Rhizobium leguminosarum biovar trifolii into a loamy sand and a silt loam, high recovery percentages were determined using quantitative immunofluorescence. Soil type, but not inoculum density between 104 and 108 cells per gram of soil, significantly influenced the recovery percentage of the immunofluorescence technique. Recovery percentages determined using selective plating were independent of either soil type or inoculum density and exceeded those determined by immunofluorescence.

The serological and genetic markers used for detection were stable during 55 days of incubation in phosphate-buffered saline and soil extract solution. After the introduction of R. leguminosarum biovar trifolii into both sterilized soil types, the population increased to 0.5–1×109 cells per gram of soil, but a decline was demonstrated in non-sterile loamy sand and silt loam during incubation of 90 days at 15°C. Starvation of rhizobial cells in the phosphate-buffered saline and soil extract solution, as well as incubation in both soil types, resulted in a significant decrease in mean cell size.
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