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    Maize maintains growth in response to decreased nitrate supply through a highly dynamic and developmental stage-specific transcriptional response

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    Thumbnail
    Name:
    Gaspe_array_draft_PBJ_revised.pdf
    Size:
    2.453Mb
    Format:
    PDF
    Description:
    Accepted Manuscript
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    Type
    Article
    Authors
    Plett, Darren
    Baumann, Ute
    Schreiber, Andreas W.
    Holtham, Luke
    Kalashyan, Elena
    Toubia, John
    Nau, John
    Beatty, Mary
    Rafalski, Antoni
    Dhugga, Kanwarpal S.
    Tester, Mark A. cc
    Garnett, Trevor
    Kaiser, Brent N.
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Center for Desert Agriculture
    Plant Science
    The Salt Lab
    Date
    2015-06-02
    Online Publication Date
    2015-06-02
    Print Publication Date
    2016-01
    Permanent link to this record
    http://hdl.handle.net/10754/556195
    
    Metadata
    Show full item record
    Abstract
    Elucidation of the gene networks underlying the response to N supply and demand will facilitate the improvement of the N uptake efficiency of plants. We undertook a transcriptomic analysis of maize to identify genes responding to both a non-growth-limiting decrease in NO3- provision and to development-based N demand changes at seven representative points across the life cycle. Gene co-expression networks were derived by cluster analysis of the transcript profiles. The majority of NO3--responsive transcription occurred at 11 (D11), 18 (D18) and 29 (D29) days after emergence, with differential expression predominating in the root at D11 and D29 and in the leaf at D18. A cluster of 98 probe sets was identified, the expression pattern of which is similar to that of the high-affinity NO3- transporter (NRT2) genes across the life cycle. The cluster is enriched with genes encoding enzymes and proteins of lipid metabolism and transport, respectively. These are candidate genes for the response of maize to N supply and demand. Only a few patterns of differential gene expression were observed over the entire life cycle; however, the composition of the classes of the genes differentially regulated at individual time points was unique, suggesting tightly controlled regulation of NO3--responsive gene expression. © 2015 Society for Experimental Biology, Association of Applied Biologists and John Wiley & Sons Ltd.
    Citation
    Maize maintains growth in response to decreased nitrate supply through a highly dynamic and developmental stage-specific transcriptional response 2015:n/a Plant Biotechnology Journal
    Publisher
    Wiley
    Journal
    Plant Biotechnology Journal
    DOI
    10.1111/pbi.12388
    PubMed ID
    26038196
    Additional Links
    http://doi.wiley.com/10.1111/pbi.12388
    ae974a485f413a2113503eed53cd6c53
    10.1111/pbi.12388
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Center for Desert Agriculture

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