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Arbuscular mycorrhizal phosphate transport under monoxenic conditions using radio-labelled inorganic and organic phosphate |
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| Authors: | Erik J Joner Sabine Ravnskov Iver Jakobsen |
| Institution: | (1) Centre de Pedologie Biologique, CNRS, 17, rue N.D. des Pauvres, P.O. Box 5, F-54501 Vandoeuvre-les-Nancy Cédex, France;(2) Center for Plant Microbe Symbioses, Plant Biology and Biogeochemistry Department, Risø National Laboratory, DK-4000 Roskilde, Denmark |
| Abstract: | Compartmented monoxenic cultures of Ri T-DNA transformed carrot roots and a symbiotic arbuscular mycorrhizal fungus demonstrated for the first time that phosphate in an organic form (32P-labelled AMP) may be hydrolysed by extra-radical mycorrhizal hyphae in the absence of other organisms, and subsequently utilized as a mineral nutrient source by the host plant after fungal transport. |
| Keywords: | phosphatase phosphate uptake Ri T-DNA transformed roots root culture symbiosis |
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