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    Arabidopsis YAK1 regulates abscisic acid response and drought resistance

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    Type
    Article
    Authors
    Kim, Dongjin cc
    Ntui, Valentine Otang
    Xiong, Liming cc
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Center for Desert Agriculture
    Plant Science
    Plant Stress Genomics Research Lab
    KAUST Grant Number
    BAS/1/1007-01-01
    Date
    2016-06-23
    Online Publication Date
    2016-06-23
    Print Publication Date
    2016-07
    Permanent link to this record
    http://hdl.handle.net/10754/621429
    
    Metadata
    Show full item record
    Abstract
    Abscisic acid (ABA) is an important phytohormone that controls several plant processes such as seed germination, seedling growth, and abiotic stress response. Here, we report that AtYak1 plays an important role in ABA signaling and postgermination growth in Arabidopsis. AtYak1 knockout mutant plants were hyposensitive to ABA inhibition of seed germination, cotyledon greening, seedling growth, and stomatal movement. atyak1-1 mutant plants display reduced drought stress resistance, as evidenced by water loss rate and survival rate. Molecular genetic analysis revealed that AtYak1 deficiency led to elevated expression of stomatal-related gene, MYB60, and down-regulation of several stress-responsive genes. Altogether, these results indicate that AtYak1 plays a role as a positive regulator in ABA-mediated drought response in Arabidopsis. © 2016 Federation of European Biochemical Societies.
    Citation
    Kim D, Ntui VO, Xiong L (2016) Arabidopsis YAK1 regulates abscisic acid response and drought resistance. FEBS Letters 590: 2201–2209. Available: http://dx.doi.org/10.1002/1873-3468.12234.
    Sponsors
    This study was supported by King Abdullah University of Science and Technology (KAUST) BAS/1/1007-01-01 (to L.X.).
    Publisher
    Wiley
    Journal
    FEBS Letters
    DOI
    10.1002/1873-3468.12234
    PubMed ID
    27264339
    ae974a485f413a2113503eed53cd6c53
    10.1002/1873-3468.12234
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Center for Desert Agriculture

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