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    Analysis of Stomatal Patterning in Selected Mutants of MAPK Pathways

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    Abrar Felemban Thesis.pdf
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    Abrar Felemban Thesis
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    Type
    Thesis
    Authors
    Felemban, Abrar cc
    Advisors
    Hirt, Heribert cc
    Committee members
    Voolstra, Christian R. cc
    Fischle, Wolfgang cc
    Program
    Bioscience
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Date
    2016-05
    Permanent link to this record
    http://hdl.handle.net/10754/608677
    
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    Abstract
    Stomata are cellular valves in plants that play an essential role in the regulation of gas exchange and are distributed in the epidermis of aerial organs. In Arabidopsis thaliana, stomatal production and development are coordinated by the mitogen-activated protein kinase (MAPK) signalling pathway, which modulates a variety of other processes, including cell proliferation, regulation of cytokinesis, programed cell death, and response to abiotic and biotic stress. The environment also plays a role in stomatal development, by influencing the frequency at which stomata develop in leaves. This thesis presents an analysis of stomatal development in Arabidopsis mutants in two MAPK pathways: MEKK1-MKK1/MKK2-MPK4, and MAP3K17/18-MKK3. Obtained results demonstrate the effect of stress conditions on stomatal development and specify the involvement of analysed MAPK in stomatal patterning. First, both analysed pathways modulate stomatal patterning in Arabidopsis cotyledons. Second, plant growth-promoting bacteria tested enhance stomatal density and affect guard cell morphology. Third, the sucrose or mannitol treatment increases defects in stomatal patterning. Finally, salt stress or high temperature can suppress stomatal defects in mutants of the MEKK1-MKK1/MKK2-MPK4 pathway.
    Citation
    Felemban, A. (2016). Analysis of Stomatal Patterning in Selected Mutants of MAPK Pathways. KAUST Research Repository. https://doi.org/10.25781/KAUST-Q9D97
    DOI
    10.25781/KAUST-Q9D97
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-Q9D97
    Scopus Count
    Collections
    Biological and Environmental Science and Engineering (BESE) Division; Bioscience Program; MS Theses

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