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    Natural variation in rosette size under salt stress conditions corresponds to developmental differences between Arabidopsis accessions and allelic variation in the LRR-KISS gene

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    Type
    Article
    Authors
    Julkowska, Magdalena
    Klei, Karlijn
    Fokkens, Like
    Haring, Michel A.
    Schranz, M. Eric
    Testerink, Christa
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Center for Desert Agriculture
    Date
    2016-02-11
    Online Publication Date
    2016-02-11
    Print Publication Date
    2016-04
    Permanent link to this record
    http://hdl.handle.net/10754/608592
    
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    Abstract
    Natural variation among Arabidopsis accessions is an important genetic resource to identify mechanisms underlying plant development and stress tolerance. To evaluate the natural variation in salinity stress tolerance, two large-scale experiments were performed on two populations consisting of 160 Arabidopsis accessions each. Multiple traits, including projected rosette area, and fresh and dry weight were collected as an estimate for salinity tolerance. Our results reveal a correlation between rosette size under salt stress conditions and developmental differences between the accessions grown in control conditions, suggesting that in general larger plants were more salt tolerant. This correlation was less pronounced when plants were grown under severe salt stress conditions. Subsequent genome wide association study (GWAS) revealed associations with novel candidate genes for salinity tolerance such as LRR-KISS (At4g08850), flowering locus KH-domain containing protein and a DUF1639-containing protein. Accessions with high LRR-KISS expression developed larger rosettes under salt stress conditions. Further characterization of allelic variation in candidate genes identified in this study will provide more insight into mechanisms of salt stress tolerance due to enhanced shoot growth.
    Citation
    Natural variation in rosette size under salt stress conditions corresponds to developmental differences between Arabidopsis accessions and allelic variation in the LRR-KISS gene 2016, 67 (8):2127 Journal of Experimental Botany
    Publisher
    Oxford University Press (OUP)
    Journal
    Journal of Experimental Botany
    DOI
    10.1093/jxb/erw015
    Additional Links
    http://jxb.oxfordjournals.org/lookup/doi/10.1093/jxb/erw015
    ae974a485f413a2113503eed53cd6c53
    10.1093/jxb/erw015
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Center for Desert Agriculture

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