Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"Brassinosteroids"”.
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Large-scale studies and biophysical analysis of systems involved in plant immunity.
… growth- immunity trade-off system regulated by brassinosteroids by antagonizing the brassinosteroids-dependent suppression of basal immunity. In the realm of systemic acquired resistance (SAR), we have demonstrated that clade I TGA recruits a specific novel glutaredoxin as a corepressor to …
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ANALYSIS OF VARIATIONS IN SUSCEPTIBILITY AND TRANSCRIPTOME RESPONSES IN TOMATO TO TWO-SPOTTED SPIDER MITE FEEDING
… biosynthesis) was susceptible indicating that brassinosteroids may have a role in defences against spider miteTbeding. Jasmonic acid levels differed in these two lines endogenously and in response to spider mite feeding. Preliminary analysis of transcriptional response data indicates that …
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Determining the Genes for Distyly in Turnera
… of incompatibility is discussed which involves brassinosteroids and auxins.
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Molecular cloning and characterization of two Arabidopsis thaliana sulfotransferases
… specificity for various stereoisomers of brassinosteroids and their immediate precursors. AtST6 was found to sulfonate a wide range of primary and secondary alcohols with unknown kinetics. Molecular characterization of AtST4a and AtST6 revealed that the deduced protein sequence of both …
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Can plant survive without steroids: Modulation of plant architecture and sex determination through brassinosteroid biosynthesis and signaling
… maize. Among the major plant growth regulators, brassinosteroids (BRs) affect multiple developmental processes and plant architecture traits, including organ size, sex determination, and leaf angle. However, genetic mechanisms by which BRs regulate plant architecture traits in maize remain poorly …
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Three genes from Solanum chacoense coding for squalene synthase
… triterpenes and sterols, including phytosterols, brassinosteroids, cholesterol, and in potato plants, steroidal glycoalkaloids (SGAs). These compounds have diverse functions in the plant. SGAs are defense compounds that deter feeding by potato pests. The wild potato Solanum chacoense accumulates …
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Molecular and biochemical characterization of steroid sulfotransferases from Brassica napus and Arabidopsis thaliana
… . Recombinant BNST3 catalyzes the sulfonation of brassinosteroids and of mammalian estrogenic steroids. The enzyme is stereospecific for 24-epibrassinosteroids, with a substrate preference for 24-epicathasterone, a metabolic precursor of 24-epibrassinolide. The bean second internode bioassay was …
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An investigation of the role of Arabidopsis thaliana plant natriuretic peptide in planta
… nitric oxide, salicylic acid, jasmonic acid, brassinosteroids and peptide hormones. Plant natriuretic peptides have been proposed to be peptide hormones involved in maintaining water and ion homeostasis in plants. Evidence for this has been provided by studies of plant responses to exogenous …
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Molecular and biochemical characterization of hydroxyjasmonate and flavonoid sulfotransferases from Arabidopsis thaliana
… from A. thaliana . AtST1 was shown to sulfonate brassinosteroids and was proposed to be involved in the modulation of their biological activity. This thesis presents the characterization of two more ST-coding genes from A. thaliana , namely AtST2a and AtST3a . The recombinant AtST3a protein was …
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Computational investigation of early events in plant growth signaling
Brassinosteroids are a class of plant hormones critical for control of growth and development. While the signaling pathway through which brassinosteroid signals are processed has been the subject of intense study for the past 50 years, relatively little is known about the precise nanoscopic events …
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Elucidation of the Function of Dihydrochalcones in Apple
… despite reduced foliar phloridzin. Bioactive brassinosteroids and gibberellins were found to be key players involved in the contrasting effects on growth observed following phloridzin reduction. Moreover, a cytochrome P450 from wild M. toringo (K. Koch) Carriere syn. sieboldii Rehder, and M. …
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Molecular Characterisation of the Brassinosteroid, Phytosulfokine and cGMP-dependent Responses in Arabidopsis thaliana
In this thesis, we have firstly cloned and expressed the domains that harbours the putative catalytic GC domain in these receptor molecules and demonstrate that these molecules can convert GTP to cGMP in vitro. Secondly, we show that exogenous application of both Phytosulfokine and Brassinosteroid …