Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/88386
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dc.contributor.authorChiasson, D.en
dc.contributor.authorLoughlin, P.en
dc.contributor.authorMazurkiewicz, D.en
dc.contributor.authorMohammadidehcheshmeh, M.en
dc.contributor.authorFedorova, E.en
dc.contributor.authorOkamoto, M.en
dc.contributor.authorMcLean, E.en
dc.contributor.authorGlass, A.en
dc.contributor.authorSmith, S.en
dc.contributor.authorBisseling, T.en
dc.contributor.authorTyerman, S.en
dc.contributor.authorDay, D.en
dc.contributor.authorKaiser, B.en
dc.date.issued2014en
dc.identifier.citationProceedings of the National Academy of Sciences of the United States of America, 2014; 111(13):4814-4819en
dc.identifier.issn0027-8424en
dc.identifier.issn1091-6490en
dc.identifier.urihttp://hdl.handle.net/2440/88386-
dc.description.abstractGlycine max symbiotic ammonium transporter 1 was first documented as a putative ammonium (NH4(+)) channel localized to the symbiosome membrane of soybean root nodules. We show that Glycine max symbiotic ammonium transporter 1 is actually a membrane-localized basic helix-loop-helix (bHLH) DNA-binding transcription factor now renamed Glycine max bHLH membrane 1 (GmbHLHm1). In yeast, GmbHLHm1 enters the nucleus and transcriptionally activates a unique plasma membrane NH4(+) channel Saccharomyces cerevisiae ammonium facilitator 1. Ammonium facilitator 1 homologs are present in soybean and other plant species, where they often share chromosomal microsynteny with bHLHm1 loci. GmbHLHm1 is important to the soybean rhizobium symbiosis because loss of activity results in a reduction of nodule fitness and growth. Transcriptional changes in nodules highlight downstream signaling pathways involving circadian clock regulation, nutrient transport, hormone signaling, and cell wall modification. Collectively, these results show that GmbHLHm1 influences nodule development and activity and is linked to a novel mechanism for NH4(+) transport common to both yeast and plants.en
dc.description.statementofresponsibilityDavid M. Chiasson, Patrick C. Loughlin, Danielle Mazurkiewicz, Manijeh Mohammadidehcheshmeh, Elena E. Fedorova, Mamoru Okamoto, Elizabeth McLean, Anthony D. M. Glass, Sally E. Smith, Ton Bisseling, Stephen D. Tyerman, David A. Day, and Brent N. Kaiseren
dc.language.isoenen
dc.publisherNational Academy of Sciencesen
dc.subjectCell Membrane; Saccharomyces cerevisiae; Soybeans; Ammonium Compounds; Cation Transport Proteins; Soybean Proteins; DNA, Plant; Gene Expression Regulation, Plant; Protein Binding; Biological Transport; Basic Helix-Loop-Helix Leucine Zipper Transcription Factors; Root Nodules, Planten
dc.titleSoybean SAT1 (Symbiotic Ammonium Transporter 1) encodes a bHLH transcription factor involved in nodule growth and NH₄⁺ transporten
dc.title.alternativeSoybean SAT1 (Symbiotic Ammonium Transporter 1) encodes a bHLH transcription factor involved in nodule growth and NH(4)(+) transporten
dc.typeJournal articleen
dc.identifier.doi10.1073/pnas.1312801111en
dc.relation.granthttp://purl.org/au-research/grants/arc/DP110100245en
dc.relation.granthttp://purl.org/au-research/grants/arc/DP0450577en
pubs.publication-statusPublisheden
dc.identifier.orcidOkamoto, M. [0000-0002-2989-607X]en
dc.identifier.orcidTyerman, S. [0000-0003-2455-1643]en
Appears in Collections:Agriculture, Food and Wine publications

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