ArticlePlant physiology2009
A mycorrhizal-specific ammonium transporter from Lotus japonicus acquires nitrogen released by arbuscular mycorrhizal fungi.
Article in Plant physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 108 papers.
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Who cites it
108 citing papers in PubMed, 329 citations in OpenAlex.
- Article
- The Genome-Wide Identification and Expression Analysis of the AMT Gene Family in Foxtail Millet.Biology · 2026Article
- Effects of root proanthocyanidins on mycorrhizal colonization and nitrogen uptake in poplar.Tree physiology · 2026Article
- Co-extraction of Small RNAs and Total RNA from Arbuscular Mycorrhizal Roots Using Laser Microdissection.Methods in molecular biology (Clifton, N.J.) · 2026Article
- A transcriptomic perspective of P trade in mycorrhizal grapevine.Mycorrhiza · 2025Article
- Functional Characterization of Ammonium TransporterJournal of fungi (Basel, Switzerland) · 2025Article
- OsNLP3 and OsPHR2 orchestrate direct and mycorrhizal pathways for nitrate uptake by regulating NAR2.1-NRT2s complexes in rice.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Article
- Cross-kingdom nutrient exchange in the plant-arbuscular mycorrhizal fungus-bacterium continuum.Nature reviews. Microbiology · 2024Review
- Breaking barriers: improving time and space resolution of arbuscular mycorrhizal symbiosis with single-cell sequencing approaches.Biology direct · 2024Review
- Genome-wide identification and comparative analysis of the Amino Acid Transporter (AAT) gene family and their roles during Phaseolus vulgaris symbioses.Functional & integrative genomics · 2024Article
- Biological ammonium transporters from the Amt/Mep/Rh superfamily: mechanism, energetics, and technical limitations.Bioscience reports · 2024Review
- Filtration effect ofMicrobiology spectrum · 2024Article
- Arbuscular-Mycorrhizal Symbiosis inInternational journal of molecular sciences · 2023Article
- Veterinary drug albendazole inhibits root colonization and symbiotic function of the arbuscular mycorrhizal fungus Rhizophagus irregularis.FEMS microbiology ecology · 2023Article
- ARBUSCULAR MYCORRHIZA-INDUCED KINASES AMK8 and AMK24 associate with the receptor-like kinase KINASE3 to regulate arbuscular mycorrhizal symbiosis in Lotus japonicus.The Plant cell · 2023Article
- Analysis of the AMT gene family in chili pepper and the effects of arbuscular mycorrhizal colonization on the expression patterns of CaAMT2 genes.BMC genomics · 2023Article
- Genome-Wide Identification and Expression Analysis of the Ammonium Transporter Family Genes in Soybean.International journal of molecular sciences · 2023Article
- Influence of Nitrogen Application Rate on the Importance of NOPlants (Basel, Switzerland) · 2023Article
- Nitrogen Acquisition and Transport in the Ectomycorrhizal Symbiosis-Insights from the Interaction between an Oak Tree andPlants (Basel, Switzerland) · 2022Article
48 more citing papers are in PubMed but not listed here.
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In mycorrhizal associations, the fungal partner assists its plant host by providing nitrogen (N) in addition to phosphate. Arbuscular mycorrhizal (AM) fungi have access to inorganic or organic forms of N and translocate them via arginine from the extra- to the intraradical mycelium, where the N is transferred to the plant without any carbon skeleton. However, the molecular form in which N is transferred, as well as the involved mechanisms, is still under debate. NH(4)(+) seems to be the preferential transferred molecule, but no plant ammonium transporter (AMT) has been identified so far. Here, we offer evidence of a plant AMT that is involved in N uptake during mycorrhiza symbiosis. The gene LjAMT2;2, which has been shown to be the highest up-regulated gene in a transcriptomic analysis of Lotus japonicus roots upon colonization with Gigaspora margarita, has been characterized as a high-affinity AMT belonging to the AMT2 subfamily. It is exclusively expressed in the mycorrhizal roots, but not in the nodules, and transcripts have preferentially been located in the arbusculated cells. Yeast (Saccharomyces cerevisiae) mutant complementation has confirmed its functionality and revealed its dependency on acidic pH. The transport experiments using Xenopus laevis oocytes indicated that, unlike other plant AMTs, LjAMT2;2 transports NH(3) instead of NH(4)(+). Our results suggest that the transporter binds charged ammonium in the apoplastic interfacial compartment and releases the uncharged NH(3) into the plant cytoplasm. The implications of such a finding are discussed in the context of AM functioning and plant phosphorus uptake.
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