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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Impact of the mode of RNAi induction on silencing of the reporter GFP gene in Arabidopsis thaliana
 Růžičková, Adéla ; Fischer, Lukáš (advisor) ; Moravec, Tomáš (referee)
RNA interference (RNAi) is one of the key mechanisms that are involved in many biological processes such as control of plant gene expression, influence on chromatin arrangement or providing protection against invasive DNA or RNA transposons, viruses and transgenes. In plants, RNAi is triggered by double stranded RNA (dsRNA) that is cleaved by DICER LIKE (DCL) proteins to small RNAs (sRNAs). The size of these sRNAs is in range of 21 - 24 nucleotides (nt). Small RNA acts in the place of origin and they are also a mobile signal which in plants can move to a short distance through plasmodesmata and to a long distance trough phloem. sRNA and Argonaute (AGO) protein form RNA-induced silencing complex (RISC). Together, they recognize the target RNA molecule and contribute to an efficient RNAi phase which may be exhibited by gene silencing at posttranscriptional level (PTGS) or transcriptional level (TGS). The purpose of this study was to compare the effects of silencing constructs, witch in a controlled way differently trigger RNAi directed against the expression of the GFP reporter gene in the model organism Arabidopsis thaliana. Silencing constructs were placed under an inducible promoter activated by the presence of 17-β-estradiol (XVE system). They differed in the way of the dsRNA formation and in the...
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