Abstract
Leek plants (Allium porrum L.) inoculated with Glomus mosseae were raised on sterilized soil/sand medium amended with Ca(H2PO4)2. H2O to test the hypothesis that high concentration of soil P inhibits formation of vesicular-arbuscular (VA) mycorrhizas by reducing concentration of soluble carbohydrate in the root. When P supply was increased, from either P addition or VA mycorrhizal infection, there was initially also an increase in concentration of soluble carbohydrate in the root. At the concentration of soil P at which infection was reduced, concentration of soluble carbohydrate was at its maximum. Therefore the above hypothesis is discounted. An increased delay in infection establishment and a greater number of abortive entry points would suggest that high concentration of soil P reduces VA mycorrhizal infection by changing the anatomy of the root to make it resistant to fungal penetration.
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© 1990 Kluwer Academic Publishers
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Amijee, F., Stribley, D.P., Tinker, P.B. (1990). Soluble carbohydrates in roots of leek (Allium porrum) plants in relation to phosphorus supply and VA mycorrhizas. In: van Beusichem, M.L. (eds) Plant Nutrition — Physiology and Applications. Developments in Plant and Soil Sciences, vol 41. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0585-6_27
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DOI: https://doi.org/10.1007/978-94-009-0585-6_27
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