Format:
1 Online-Ressource (XIII, 173 Seiten, 11140 KB)
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Illustrationen, Diagramme
Content:
After endosymbiosis, chloroplasts lost most of their genome. Many former endosymbiotic genes are now nucleus-encoded and the products are re-imported post-translationally. Consequently, photosynthetic complexes are built of nucleus- and plastid-encoded subunits in a well-defined stoichiometry. In Chlamydomonas, the translation of chloroplast-encoded photosynthetic core subunits is feedback-regulated by the assembly state of the complexes they reside in. This process is called Control by Epistasy of Synthesis (CES) and enables the efficient production of photosynthetic core subunits in stoichiometric amounts. In chloroplasts of embryophytes, only Rubisco subunits have been shown to be feedback-regulated. That opens the question if there is additional CES regulation in embryophytes. I analyzed chloroplast gene expression in tobacco and Arabidopsis mutants with assembly defects for each photosynthetic complex to broadly answer this question. My results (i) confirmed CES within Rubisco and hint to potential translational feedback ...
Note:
Dissertation Universität Potsdam 2020
Additional Edition:
Erscheint auch als Druck-Ausgabe Ghandour, Rabea Identification of chloroplast translational feedback regulation and establishment of aptamer based mRNA purification to unravel involved regulatory factors Potsdam, 2020
Language:
English
Keywords:
Hochschulschrift
DOI:
10.25932/publishup-48289
URN:
urn:nbn:de:kobv:517-opus4-482896
URL:
https://d-nb.info/125573079X/34
Author information:
Schmitz-Linneweber, Christian 1971-
Author information:
Zoschke, Reimo 1979-