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    A Nucleus-localized Long Non-Coding RNA Enhances Drought and Salt Stress Tolerance

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    Type
    Article
    Authors
    Qin, Tao
    Zhao, Huayan
    Cui, Peng cc
    Albesher, Nour H.
    Xiong, Liming cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Program
    Computational Bioscience Research Center (CBRC)
    Desert Agriculture Initiative
    Office of the VP
    Plant Science
    Date
    2017-09-08
    Online Publication Date
    2017-09-08
    Print Publication Date
    2017-11
    Permanent link to this record
    http://hdl.handle.net/10754/625446
    
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    Abstract
    Long non-coding RNAs (lncRNAs) affect gene expression through a wide range of mechanisms and are considered as important regulators in many essential biological processes. A large number of lncRNA transcripts have been predicted or identified in plants in recent years. However, the biological functions for most of them are still unknown. In this study, we identified an Arabidopsis thaliana lncRNA, Drought induced RNA (DRIR), as a novel positive regulator of plant response to drought and salt stress. DRIR was expressed at a low level under non-stress conditions but can be significantly activated by drought and salt stress as well as by abscisic acid (ABA) treatment. We identified a T-DNA insertion mutant, drirD, which had higher expression of the DRIR gene than the wild type plants. The drirD mutant exhibits increased tolerance to drought and salt stress. Overexpressing DRIR in Arabidopsis also increased tolerance to drought and salt stress of the transgenic plants. The drirD mutant and the overexpressing seedlings are more sensitive to ABA than the wild type in stomata closure and seedling growth. Genome-wide transcriptome analysis demonstrated that the expression of a large number of genes was altered in drirD and the overexpressing plants. These include genes involved in ABA signaling, water transport and other stress-relief processes. Our study reveals a mechanism whereby DRIR regulates plant response to abiotic stress by modulating the expression of a series of genes involved in stress response.
    Citation
    Qin T, Zhao H, Cui P, Albesher N, Xiong L (2017) A Nucleus-localized Long Non-Coding RNA Enhances Drought and Salt Stress Tolerance. Plant Physiology: pp.00574.2017. Available: http://dx.doi.org/10.1104/pp.17.00574.
    Sponsors
    We thank the Arabidopsis Biological Resource Center for providing the T-DNA insertion lines.
    Publisher
    American Society of Plant Biologists (ASPB)
    Journal
    Plant Physiology
    DOI
    10.1104/pp.17.00574
    PubMed ID
    28887353
    Additional Links
    http://www.plantphysiol.org/content/early/2017/09/08/pp.17.00574
    ae974a485f413a2113503eed53cd6c53
    10.1104/pp.17.00574
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Bioscience Program; Computational Bioscience Research Center (CBRC); Desert Agriculture Initiative

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