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Rapid nitrogen transfer in the Sorghum bicolor : glomus mosseae arbuscular mycorrhizal symbiosis

Koegel, S. and T. Boller, M. F. Lehmann and Wiemken, A.. (2013) Rapid nitrogen transfer in the Sorghum bicolor : glomus mosseae arbuscular mycorrhizal symbiosis. Plant signaling & behavior, Vol. 8, H. 8 , e25229.

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Official URL: http://edoc.unibas.ch/dok/A6164894

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Abstract

We have recently identified two genes coding for ammonium transporters (AMT) in Sorghum bicolor that were induced in roots colonized by arbuscular mycorrhizal (AM) fungi. To improve our understanding of the dynamics of ammonium transport in this symbiosis, we studied the transfer of soil-ammonium-derived ( 15) N to S. bicolor plants via the Glomus mosseae fungal mycelium in compartmented microcosms. The ( 15) NH 4 (+) -containing hyphal compartment was inaccessible to the roots in the plant compartment. ( 15) N label concentrations significantly increased in plant roots and leaves already 48 h after exposure of the AM fungus to the ( 15) NH 4 (+) substrate translating an unexpected fast and efficient symbiotic N transfer and further highlighting that AM symbiosis represents an importantly component of plant nitrogen nutrition.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Umweltgeowissenschaften > Geochemie Stoffkreisläufe (Lehmann)
UniBasel Contributors:Lehmann, Moritz F and Boller, Thomas and Courty, Pierre-Emmanuel and Wiemken, Andres M. and Koegel, Sally
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Landes Bioscience
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:04 Sep 2015 14:32
Deposited On:13 Sep 2013 07:52

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