Regulation of wheat seed germination and seedling growth by brassinosteroid

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dc.contributor.authorKaur, Rupinder
dc.contributor.examiningcommitteeJordan, Mark (Plant Science)en_US
dc.contributor.examiningcommitteeSchroeder, Dana (Biological Science)en_US
dc.contributor.supervisorAyele, Belay (Plant Science)en_US
dc.date.accessioned2019-11-15T17:00:59Z
dc.date.available2019-11-15T17:00:59Z
dc.date.issued2019-10-24en_US
dc.date.submitted2019-11-06T18:09:50Zen
dc.degree.disciplinePlant Scienceen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractBrassinosteroids (BRs) are plant hormones known to play a role in regulation of seed germination and seedling growth, and these roles of BR involve its interaction with other phytohormones such as abscisic acid (ABA) and gibberellin (GA). This study analyzed the effects of inhibition of BR biosynthesis on seed germination and seedling growth, and on expression of genes involved in the metabolism of two other phytohormones: ABA, a germination inhibitor and GA, germination enhancers. Treatment with BR biosynthesis inhibitor has no effect on seed germination, but it reduced seedling growth. Co-application of the BR biosynthesis inhibitor and exogenous BR rescued the coleoptile growth but caused reduction of root growth in later phases of imbibition as compared to the control or treatment with BR biosynthesis inhibitor alone. Treatment with BR biosynthesis inhibitor affected the expression of ABA metabolic NCED2, CYP707A1, CYP707A2 and GA biosynthetic GA20ox1 and GA3ox2 genes in different tissues such as endosperm, embryo, coleoptile, and root. These results suggest that BR plays a role in regulating the expression of ABA and GA metabolic genes during and after seed germination.en_US
dc.description.noteFebruary 2020en_US
dc.identifier.urihttp://hdl.handle.net/1993/34372
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectSeed vigoren_US
dc.subjectSeed germinationen_US
dc.subjectSeedling growthen_US
dc.subjectBrassinosteroiden_US
dc.titleRegulation of wheat seed germination and seedling growth by brassinosteroiden_US
dc.typemaster thesisen_US
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