Molecular Characterization of GhPLDα1 and Its Relationship With Secondary Cell Wall Thickening in Cotton Fibers

    October 2016 in “ Acta Biochimica et Biophysica Sinica ”
    Kai Tang, Jinyuan Liu
    TLDR GhPLDα1 helps thicken cotton fiber walls by boosting cellulose production.
    The study focused on the molecular characterization of the GhPLDα1 gene in upland cotton and its role in fiber development. GhPLDα1 was found to be highly expressed in cotton fibers at 20 days post anthesis, coinciding with peak PLDα enzyme activity, cellulose accumulation, and increased H₂O₂ content. The research demonstrated that inhibiting PLDα activity reduced cellulose and H₂O₂ levels in cotton fibers, suggesting that GhPLDα1 is linked to secondary cell wall thickening by promoting cellulose biosynthesis through increased H₂O₂ content.
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