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Genetics and Genomics

The University of Southern Mississippi

Honors Theses

Theses/Dissertations

RNAi

Publication Year

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Fate Of Ingested Rna In The Two-Spotted Spider Mite, Obrie D. Scarbrough May 2019

Fate Of Ingested Rna In The Two-Spotted Spider Mite, Obrie D. Scarbrough

Honors Theses

RNA interference, or RNAi, is a gene regulation mechanism that uses small noncoding RNAs (sRNAs) to silence the expression of certain genes. The application of RNAi has been extended to insect pest control. The two-spotted spider mite Tetranychus urticae is a persistent agricultural pest that tends to develop pesticide resistance at an alarming rate, making it a perfect candidate for RNAi technology development. It was hypothesized that unique sRNAs could be isolated from RNA soaked spider mites, and new synthetic RNAs could be synthesized to elicit greater knockdown than was achieved in previous studies. To perform this research, a small …


Disruption Of Rna Metabolism By Zika Virus, Maggie Lea Dickerson May 2018

Disruption Of Rna Metabolism By Zika Virus, Maggie Lea Dickerson

Honors Theses

Flaviviruses are positive, single-stranded, enveloped RNA viruses that are a part of the family, Flaviviridae. West Nile virus, Dengue, Zika virus and more are a part of this family. Mosquitoes are the vectors for these viruses. In order for the virus to infect mosquitoes, it must evade the RNA interference (RNAi), which is the major antiviral immune mechanism of insects. One study found the 3’ untranslated region (UTR) of the West Nile virus that inhibited the RNAi (GP et al. 2016). The goal of this study is to investigate if the 3’ and 5’ UTR region of the Zika virus …