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    Phylogenetically diverse endophytic bacteria from desert plants induce transcriptional changes of tissue-specific ion transporters and salinity stress in Arabidopsis thaliana

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    Type
    Article
    Authors
    Eida, Abdul Aziz cc
    Alzubaidy, Hanin S. cc
    Zélicourt, Axel de cc
    Synek, Lukas cc
    Alsharif, Wiam cc
    Lafi, Feras Fawzi
    Hirt, Heribert cc
    Saad, Maged cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Program
    Competitive Research Funds
    Computational Bioscience Research Center (CBRC)
    Desert Agriculture Initiative
    OCRF- Special Academic Partnership
    Plant Science
    Date
    2018-12-07
    Online Publication Date
    2018-12-07
    Print Publication Date
    2019-03
    Permanent link to this record
    http://hdl.handle.net/10754/630266
    
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    Abstract
    Salinity severely hampers crop productivity worldwide and plant growth promoting bacteria could serve as a sustainable solution to improve plant growth under salt stress. However, the molecular mechanisms underlying salt stress tolerance promotion by beneficial bacteria remain unclear. In this work, six bacterial isolates from four different desert plant species were screened for their biochemical plant growth promoting traits and salinity stress tolerance promotion of the unknown host plant Arabidopsis thaliana. Five of the isolates induced variable root phenotypes but could all increase plant shoot and root weight under salinity stress. Inoculation of Arabidopsis with five isolates under salinity stress resulted in tissue-specific transcriptional changes of ion transporters and reduced Na+/K+ shoot ratios. The work provides first insights into the possible mechanisms and the commonality by which phylogenetically diverse bacteria from different desert plants induce salinity stress tolerance in Arabidopsis. The bacterial isolates provide new tools for studying abiotic stress tolerance mechanisms in plants and a promising agricultural solution for increasing crop yields in semi-arid regions.
    Citation
    Eida AA, Alzubaidy HS, de Zélicourt A, Synek L, Alsharif W, et al. (2018) Phylogenetically diverse endophytic bacteria from desert plants induce transcriptional changes of tissue-specific ion transporters and salinity stress in Arabidopsis thaliana. Plant Science. Available: http://dx.doi.org/10.1016/j.plantsci.2018.12.002.
    Sponsors
    The authors would like to thank Cristina Andrés-Barrao for useful discussions on bacterial classification and phylogenetic tree construction. We also thank all members of The Hirt Lab, CDA management team and the greenhouse and bioscience core labs in KAUST for their technical assistance. The work was funded by KAUST baseline research projects of H.H. The authors declare that the research was conducted in absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
    Publisher
    Elsevier BV
    Journal
    Plant Science
    DOI
    10.1016/j.plantsci.2018.12.002
    Additional Links
    https://www.sciencedirect.com/science/article/pii/S0168945218311555
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.plantsci.2018.12.002
    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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