ArticleFrontiers in plant science2016
GintAMT3 - a Low-Affinity Ammonium Transporter of the Arbuscular Mycorrhizal Rhizophagus irregularis.
Article in Frontiers in plant science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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23 citing papers in PubMed, 81 citations in OpenAlex.
- Review
- A Whole-Plant Culture Method to Study Structural and Functional Traits of Extraradical Mycelium.Methods in molecular biology (Clifton, N.J.) · 2026Article
- AM fungi modulate organic nitrogen preference ofFrontiers in plant science · 2025Article
- Cross-kingdom nutrient exchange in the plant-arbuscular mycorrhizal fungus-bacterium continuum.Nature reviews. Microbiology · 2024Review
- Arbuscular mycorrhizal symbiosis with Rhizophagus irregularis DAOM197198 modifies the root transcriptome of walnut trees.Mycorrhiza · 2024Article
- Transcriptomic Analysis Reveals the Effect of Urea on Metabolism ofLife (Basel, Switzerland) · 2024Article
- Article
- 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
- The role of arbuscular mycorrhizal symbiosis in plant abiotic stress.Frontiers in microbiology · 2023Review
- Nitrogen Acquisition and Transport in the Ectomycorrhizal Symbiosis-Insights from the Interaction between an Oak Tree andPlants (Basel, Switzerland) · 2022Article
- The Roles of Phosphorus and Nitrogen Nutrient Transporters in the Arbuscular Mycorrhizal Symbiosis.International journal of molecular sciences · 2022Review
- The potential role of Mucoromycotina 'fine root endophytes' in plant nitrogen nutrition.Physiologia plantarum · 2022Article
- Genome-Wide Analysis of Nutrient Signaling Pathways Conserved in Arbuscular Mycorrhizal Fungi.Microorganisms · 2021Article
- Article
- CaNRT2.1 Is Required for Nitrate but Not Nitrite Uptake in Chili Pepper PathogenFrontiers in microbiology · 2020Article
- Article
- Imbalanced Regulation of Fungal Nutrient Transports According to Phosphate Availability in a Symbiocosm Formed by Poplar, Sorghum, andFrontiers in plant science · 2019Article
- TheFrontiers in plant science · 2019Article
- Improvement ofInternational journal of molecular sciences · 2018Article
- Identification of arbuscular mycorrhiza-inducible Nitrate Transporter 1/Peptide Transporter Family (NPF) genes in rice.Mycorrhiza · 2018Article
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11 authors at 5 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Nutrient acquisition and transfer are essential steps in the arbuscular mycorrhizal (AM) symbiosis, which is formed by the majority of land plants. Mineral nutrients are taken up by AM fungi from the soil and transferred to the plant partner. Within the cortical plant root cells the fungal hyphae form tree-like structures (arbuscules) where the nutrients are released to the plant-fungal interface, i.e., to the periarbuscular space, before being taken up by the plant. In exchange, the AM fungi receive carbohydrates from the plant host. Besides the well-studied uptake of phosphorus (P), the uptake and transfer of nitrogen (N) plays a crucial role in this mutualistic interaction. In the AM fungus Rhizophagus irregularis (formerly called Glomus intraradices), two ammonium transporters (AMT) were previously described, namely GintAMT1 and GintAMT2. Here, we report the identification and characterization of a newly identified R. irregularis AMT, GintAMT3. Phylogenetic analyses revealed high sequence similarity to previously identified AM fungal AMTs and a clear separation from other fungal AMTs. Topological analysis indicated GintAMT3 to be a membrane bound pore forming protein, and GFP tagging showed it to be highly expressed in the intraradical mycelium of a fully established AM symbiosis. Expression of GintAMT3 in yeast successfully complemented the yeast AMT triple deletion mutant (MATa ura3 mep1Δ mep2Δ::LEU2 mep3Δ::KanMX2). GintAMT3 is characterized as a low affinity transport system with an apparent Km of 1.8 mM and a V max of 240 nmol(-1) min(-1) 10(8) cells(-1), which is regulated by substrate concentration and carbon supply.
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