Summary
Most of theFrankia strains isolated fromAlnus andMyrica species are morphologically almost indistinguishable, when grown under standard culture conditions. They form similar vegetative hyphae while sporangia are produced in variable amounts from strain to strain.
Physiological reactions were assessed in order to compare 20 strains isolated from various species ofAlnus and one species ofMyrica in Europe and North America. Among invariant negative or positive characteristics, differences in urease, protease and β-glucosidase activities appeared to be of significant value.
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Horrière, F. In vitro physiological approach to classification ofFrankia isolates of ‘the Alnus group’, based on urease, protease and β-glucosidase activities. Plant Soil 78, 7–13 (1984). https://doi.org/10.1007/BF02277835
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DOI: https://doi.org/10.1007/BF02277835