Presented at a symposium The rhizosphere on 3 October 1972 organised by the Physicochemical and Biophysical Panel of the Pesticides Group, Society of Chemical Industry.
Phosphate flow into mycorrhizal roots†
Article first published online: 28 APR 2006
Copyright © 1973 John Wiley & Sons, Ltd
Volume 4, Issue 3, pages 385–395, June 1973
How to Cite
Sanders, F. E. and Tinker, P. B. (1973), Phosphate flow into mycorrhizal roots. Pestic. Sci., 4: 385–395. doi: 10.1002/ps.2780040316
- Issue published online: 28 APR 2006
- Article first published online: 28 APR 2006
- Manuscript Accepted: MAR 1972
Ectotrophic mycorrhizas have been studied intensively and their value to some tree species is well known. Endotrophic mycorrhizas have received less attention and their potential value to plants has only been fully substantiated within the last 12 years. Responses of the host to mycorrhizal infection seem always to be associated with improved phosphorus nutrition of the plant. The mechanism whereby this occurs is considered. There is evidence that the ultimate limitation on phosphorus uptake by a simple cylindrical root is the diffusion impedance in the soil around it, and that widely spreading hyphae effectively short-circuit this impedance. Some data on hyphal length, and estimated net flux of phosphorus through the hyphae are given, with a discussion of possible mechanisms driving this flux.