Arbuscular mycorrhizal phosphate transport under monoxenic conditions using radio-labelled inorganic and organic phosphate

Compartmented monoxenic cultures of Ri T-DNA transformed carrot roots and a symbiotic arbuscular mycorrhizal fungus demonstrated for the first time th at phosphate in an organic form (P-32-labelled AMP) may be hydrolysed by ex tra-radical mycorrhizal hyphae in the absence of other organisms, and subse quently utilized as a mineral nutrient source by the host plant after funga l transport.