ArticleCurrent genetics2007
A limiting source of organic nitrogen induces specific transcriptional responses in the extraradical structures of the endomycorrhizal fungus Glomus intraradices.
Article in Current genetics, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
8 citing papers in PubMed, 20 citations in OpenAlex.
- Revisiting the 'direct mineral cycling' hypothesis: arbuscular mycorrhizal fungi colonize leaf litter, but why?The ISME journal · 2019Review
- Arbuscular Mycorrhizal Fungal 14-3-3 Proteins Are Involved in Arbuscule Formation and Responses to Abiotic Stresses During AM Symbiosis.Frontiers in microbiology · 2018Article
- An in vivo whole-plant experimental system for the analysis of gene expression in extraradical mycorrhizal mycelium.Mycorrhiza · 2017Article
- Article
- Substantial nitrogen acquisition by arbuscular mycorrhizal fungi from organic material has implications for N cycling.Proceedings of the National Academy of Sciences of the United States of America · 2010Article
- Unraveling the network: Novel developments in the understanding of signaling and nutrient exchange mechanisms in the arbuscular mycorrhizal symbiosis.Plant signaling & behavior · 2008Article
- Characterization of an amino acid permease from the endomycorrhizal fungus Glomus mosseae.Plant physiology · 2008Article
- Transcriptome analysis of arbuscular mycorrhizal roots during development of the prepenetration apparatus.Plant physiology · 2007Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The molecular bases of organic nitrogen (N) metabolism in arbuscular mycorrhizal (AM) fungi remain so far largely unexplored. To isolate genes responsive to low versus high organic N concentrations, the techniques of suppressive subtractive hybridization (SSH) and reverse Northern dot blot were performed on extraradical structures of the AM fungus Glomus intraradices grown on carrot hairy roots. This approach allowed the identification of 32 up-regulated and 2 down-regulated genes following a 48-h treatment with 2 microM of an amino acid pool (leucine, alanine, asparagine, lysine, tyrosine). The expression profile of eight genes was further confirmed by semi-quantitative and real-time RT-PCR. The majority of the sequences showed no significant similarity to proteins in databases. The other responsive genes code for putative glyoxal oxidases, transcription factors, a subunit of the 20S proteasome, a protein kinase and a Ras protein. This novel set of data indicates that G. intraradices extraradical structures perceive organic N limitation in the surrounding environment leading to a response at transcriptional level and supports the role of N as signalling molecule in AM fungi.
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Registered trials
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