The acquisition of phosphorus by Lupinus albus L., 1: some characteristics of the soil/root interface.
Gardner W.K. | Parbery D.G. | Barber D.A.
It has been demonstrated by an agar film technique that L. albus can cause the breakdown of colloids of iron silicate, iron phosphate, aluminium silicate and aluminium phosphate and destabilise suspensions of manganese dioxide, calcium mono-hydrogen phosphate and ferric hydroxide. Dissolution of these compounds was most marked in areas adjacent to proteoid roots (dense clusters of secondary laterals of limited growth which develop on lateral roots) and parts of the tap root. Soil associated with these regions of the root system contained more reductants and chelating agents than the bulk soil. Soil from around the roots of L. albus exhibited much greater reducing and chelating activity than that associated with the roots of rape and buckwheat.Show more [+] Less [-]