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Genomics Commons

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Full-Text Articles in Genomics

Investigating The Impact Of Transcription On Mutation Rates, Sarah Patterson Dec 2023

Investigating The Impact Of Transcription On Mutation Rates, Sarah Patterson

Theses and Dissertations

tRNA genes are highly transcribed and perform one of the most fundamental cellular functions. Although a universal pattern observed across all three domains of life is that highly transcribed genes tend to evolve slowly, tRNA genes have been shown previously to evolve rapidly. This rapid sequence evolution could result from relaxed selection, increased mutation rate, or a combination of both. Here, we use mutation-accumulation line sequencing data to show that tRNA genes accumulate more mutations than other gene types. Our results indicate that this elevated mutation rate is a consequence of both elevated transcription-associated mutagenesis and a lack of transcription-coupled …


Evolution And Epidemiology Of Channel Catfish Virus (Ccv), Arun Venugopalan May 2023

Evolution And Epidemiology Of Channel Catfish Virus (Ccv), Arun Venugopalan

Theses and Dissertations

Channel catfish virus disease (CCVD) is the principal viral disease in the United States catfish industry. The CCVD is caused by channel catfish virus (CCV), with mortality reaching up to 100% in fingerlings. CCV is assigned taxonomically to the family Alloherpesviridae, genus Ictalurivirus, species Ictalurid herpesvirus 1 (IcHV-1). To date, virulence, immunogenicity, and genome plasticity of the CCV field isolates have not been investigated. Three genotypes of CCV (IcHV-1A, IcHV-1B, and BCAHV) were identified using restriction fragment length polymorphism (RFLP) analysis. Virulence assessment of three representative isolates of RFLP groups suggests that IcHV-1B (pooled survival [mean ± SE]: 58.3% ± …


Methods And Tools To Improve Performance Of Plant Genome Analysis, Drew Ferrell Aug 2022

Methods And Tools To Improve Performance Of Plant Genome Analysis, Drew Ferrell

Theses and Dissertations

Multi -omics data analysis and integration facilitates hypothesis building toward an understanding of genes and pathway responses driven by environments. Methods designed to estimate and analyze gene expression, with regard to treatments or conditions, can be leveraged to understand gene-level responses in the cell. However, genes often interact and signal within larger structures such as pathways and networks. Complex studies guided toward describing dynamic genetic pathways and networks require algorithms or methods designed for inference based on gene interactions and related topologies. Classes of algorithms and methods may be integrated into generalized workflows for comparative genomics studies, as multi -omics …


Comparative Genome Analyses Reveal Distinct Structure In The Saltwater Crocodile Mhc., Weerachai Jaratlerdsiri, Janine Deakin, Ricardo M. Godinez, Xueyan Shan, Daniel G. Peterson, Sylvain Marthey, Eric Lyons, Fiona M. Mccarthy, Sally R. Isberg, Damien P. Higgins, Amanda Y. Chong, John St. John, Travis C. Glenn, David A. Ray, Jaime Gongora Dec 2014

Comparative Genome Analyses Reveal Distinct Structure In The Saltwater Crocodile Mhc., Weerachai Jaratlerdsiri, Janine Deakin, Ricardo M. Godinez, Xueyan Shan, Daniel G. Peterson, Sylvain Marthey, Eric Lyons, Fiona M. Mccarthy, Sally R. Isberg, Damien P. Higgins, Amanda Y. Chong, John St. John, Travis C. Glenn, David A. Ray, Jaime Gongora

College of Agriculture & Life Sciences Publications and Scholarship

The major histocompatibility complex (MHC) is a dynamic genome region with an essential role in the adaptive immunity of vertebrates, especially antigen presentation. The MHC is generally divided into subregions (classes I, II and III) containing genes of similar function across species, but with different gene number and organisation. Crocodylia (crocodilians) are widely distributed and represent an evolutionary distinct group among higher vertebrates, but the genomic organisation of MHC within this lineage has been largely unexplored. Here, we studied the MHC region of the saltwater crocodile (Crocodylus porosus) and compared it with that of other taxa. We characterised genomic clusters …


Adventures In The Enormous: A 1.8 Million Clone Bac Library For The 21.7 Gb Genome Of Loblolly Pine., Zenaida V. Magbanua, Seval Ozkan, Benjamin D. Bartlett, Philippe Chouvarine, Christopher A. Saski, Aaron Liston, Richard C. Cronn, C. Dana Nelson, Daniel G. Peterson Jan 2011

Adventures In The Enormous: A 1.8 Million Clone Bac Library For The 21.7 Gb Genome Of Loblolly Pine., Zenaida V. Magbanua, Seval Ozkan, Benjamin D. Bartlett, Philippe Chouvarine, Christopher A. Saski, Aaron Liston, Richard C. Cronn, C. Dana Nelson, Daniel G. Peterson

College of Agriculture & Life Sciences Publications and Scholarship

Loblolly pine (LP; Pinus taeda L.) is the most economically important tree in the U.S. and a cornerstone species in southeastern forests. However, genomics research on LP and other conifers has lagged behind studies on flowering plants due, in part, to the large size of conifer genomes. As a means to accelerate conifer genome research, we constructed a BAC library for the LP genotype 7-56. The LP BAC library consists of 1,824,768 individually-archived clones making it the largest single BAC library constructed to date, has a mean insert size of 96 kb, and affords 7.6X coverage of the 21.7 Gb …


Evolution Of Genome Size And Complexity In Pinus., Alison M. Morse, Daniel G. Peterson, M. Nurul Islam-Faridi, Katherine E. Smith, Zenaida V. Magbanua, Saul A. Garcia, Thomas L. Kubisiak, Henry V. Amerson, John E. Carlson, C. Dana Nelson, John M. Davis Feb 2009

Evolution Of Genome Size And Complexity In Pinus., Alison M. Morse, Daniel G. Peterson, M. Nurul Islam-Faridi, Katherine E. Smith, Zenaida V. Magbanua, Saul A. Garcia, Thomas L. Kubisiak, Henry V. Amerson, John E. Carlson, C. Dana Nelson, John M. Davis

College of Agriculture & Life Sciences Publications and Scholarship

BACKGROUND: Genome evolution in the gymnosperm lineage of seed plants has given rise to many of the most complex and largest plant genomes, however the elements involved are poorly understood. METHODOLOGY/PRINCIPAL FINDINGS: Gymny is a previously undescribed retrotransposon family in Pinus that is related to Athila elements in Arabidopsis. Gymny elements are dispersed throughout the modern Pinus genome and occupy a physical space at least the size of the Arabidopsis thaliana genome. In contrast to previously described retroelements in Pinus, the Gymny family was amplified or introduced after the divergence of pine and spruce (Picea). If retrotransposon expansions are responsible …