Rapid nitrogen transfer in the Sorghum bicolor-Glomus mosseae arbuscular mycorrhizal symbiosis.
- Koegel S Zurich-Basel Plant Science Center; Department of Environmental Sciences, Botany; University of Basel; Basel, Switzerland.
- Boller T
- Lehmann MF
- Wiemken A
- Courty PE
- 2013-06-14
Published in:
- Plant signaling & behavior. - 2013
15N labeling
arbuscular mycorrhizal fungi
mycelium
nitrogen
sorghum
transfer
Glomeromycota
Mycorrhizae
Nitrogen
Nitrogen Isotopes
Soil
Sorghum
Symbiosis
Time Factors
English
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, attesting an efficient symbiotic N transfer between the symbiotic partners and further highlighting that AM symbiosis represents an important component of plant nitrogen nutrition.
- Language
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- English
- Open access status
- bronze
- Identifiers
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- DOI 10.4161/psb.25229
- PMID 23759552
- Persistent URL
- https://sonar.ch/global/documents/149868
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