• Login
    View Item 
    •   Home
    • Theses and Dissertations
    • Dissertations
    • View Item
    •   Home
    • Theses and Dissertations
    • Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguidePlumX LibguideSubmit an Item

    Statistics

    Display statistics

    Understanding the Molecular Basis of Thermopriming in Plants

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Natalia Serrano Dissertation.pdf
    Size:
    5.524Mb
    Format:
    PDF
    Description:
    Natalia Serrano Dissertation
    Download
    Type
    Dissertation
    Authors
    Serano, Natalia Lorena Gorron cc
    Advisors
    Mahfouz, Magdy M. cc
    Committee members
    Blilou, Ikram cc
    Saikaly, Pascal cc
    Benhamed, Moussa cc
    Program
    Bioscience
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Date
    2019-08
    Permanent link to this record
    http://hdl.handle.net/10754/656606
    
    Metadata
    Show full item record
    Abstract
    Plants acclimate to the changing environmental conditions by adjusting their molecular responses at different molecular levels including genome, epigenome, transcriptome, metabolome, and proteome levels to ensure survival. Plants adapt to abiotic stresses by establishing a ‘stress memory’ of previous exposures to mild stresses. Stress memory helps plants to develop tolerance and survive recurring exposures to the stress conditions. This memory establishes a new cellular state that differs from the state of unexposed naïve plants. This process is known as priming. Priming and the stress memory give the plants the possibility to acclimate to different biotic and abiotic stress conditions. The acquisition and maintenance of the stress-memory are two separate processes and crucial for successful tolerance to subsequent stress conditions. Priming promises to improve plant performance under severe stress conditions and enhance food production. Therefore, understanding the molecular basis of heat stress priming and stress-induced memory is of vital importance to plant biology. In this thesis, I investigated the role of transcriptional, post-transcriptional and metabolomic regulation controlling plant responses to heat stress, one of the major abiotic stresses affecting agriculture. I designed and established a heat stress priming strategy which reveals that heat stress-induced priming leads to the establishment of heat stress memory that permits plants to survive lethal temperatures. In this thesis, I analyzed the genome-wide differential gene expression, the alternative splicing patterns and regulation, and the reprogramming of the metabolic homeostasis that reprogram the establishment of the heat stress priming and stress-memory. I identified a set of candidate genes and metabolites playing key roles in the establishment of heat stress-induced memory. Intriguingly, it was possible also to establish a link between alternative splicing patterns and heat stress-induced memory. Subsequently, the knowledge of heat stress priming in Arabidopsis was translated into tomato crop plants, to improve their heat stress tolerance. This work enhances our understanding of the molecular basis of heat stress priming, and the establishment of heat stress memory, at transcriptional, post-transcriptional, and metabolomic levels. These findings can be translated into crop species to improve their survival under recurring heat stress conditions to improve world agriculture and food security.
    Citation
    Serano, N. L. G. (2019). Understanding the Molecular Basis of Thermopriming in Plants. KAUST Research Repository. https://doi.org/10.25781/KAUST-3527K
    DOI
    10.25781/KAUST-3527K
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-3527K
    Scopus Count
    Collections
    Biological and Environmental Sciences and Engineering (BESE) Division; Bioscience Program; Dissertations

    entitlement

     
    DSpace software copyright © 2002-2021  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.