Humus bacteria of Norway spruce stands: plant growth promoting properties and birch, red fescue and alder colonizing capacity |
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| Authors: | Elo Maunuksela Salkinoja-Salonen Smolander Haahtela |
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| Affiliation: | Department of Biosciences, Division of General Microbiology, Viikki Biocenter, P.O. Box 56, FIN-00014 University of Helsinki, Finland;Department of Applied Chemistry and Microbiology, Division of Microbiology, Viikki Biocenter, P.O. Box 56, FIN-00014 University of Helsinki, Finland;Finnish Forest Research Institute, Vantaa Research Center, P.O. Box 18, FIN-01301 Vantaa, Finland |
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| Abstract: | ![]()
We studied the potential of the humus layer of the Norway spruce stands to supply beneficial rhizobacteria to birch (Betula pendula), alder (Alnus incana) and fescue grass (Festuca rubra), representatives of pioneer vegetation after clear-cutting of the coniferous forest. Axenically grown seedlings of these species were inoculated with the acid spruce humus, pH 3.7-5.3. Actinorhizal propagules, capable of nodulating alder, were present in high density (10(3) g(-1)) in humus of long-term limed plots, whereas plots with nitrogen fertilization contained almost none (
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| Keywords: | Spruce humus rhizobacterium Nitrogen fixation Fungal antagonist Alder nodulation |
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