Summary
Most of the Frankia strains isolated from Alnus and Myrica 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 of Alnus and one species of Myrica 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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© 1984 Martinus Nijhoff/Dr W. Junk Publishers, The Hague
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Horrière, F. (1984). In vitro physiological approach to classification of Frankia isolates of ‘the Alnus group’, based on urease, protease and β-glucosidase activities. In: Akkermans, A.D.L., Baker, D., Huss-Danell, K., Tjepkema, J.D. (eds) Frankia Symbioses. Developments in Plant and Soil Sciences, vol 12. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6158-6_2
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DOI: https://doi.org/10.1007/978-94-009-6158-6_2
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