Lecture 9b: Fungal Genetic and Omits Flashcards
Genomics
Study of the content, organisation, function and evolution of genetic information contained in whole genomes
Comparative genomics
Study of similarities and differences among genomes of different organisms
Functional genomics
Study of the functions of the genetic information contained on genomes
Transcriptomics
Study of the expression of the genome
Proteomics
The study of the set of all proteins found in a cell
Bioinformatics
Interdisciplinary field which combines molecular biology and computer science, develops tools to make sense of DNA, RNA and protein sequence data
Sequencing
Process of determining the precise oder of nucleotides within DNA and RNA molecule
(1st gen)Sanger sequencing is used for
Individual DNA fragments, plasmids and PCR
* Is expensive for larger sequencing projects
What was the first full eukaryotic genome to be sequenced
- Yeast genome
- Saccharomyces cerevisiae
(2nd gen) NGS technologies
- Faster than Sanger
- Less expensive than Sanger
Does not require electrophoresis
(3rd gen) Single molecule sequencing
- Does not require a PCR step
- Less expensive
- High speed
- Produce long reads
- Major platforms: PacBio and Oxford nano pore
Fungal genome contains
- Nuclear genome
- Mitochndrial genome
- Mobile genetic elements (plasmids and transposable elements)
- True resident genetic elements (fungal viruses)
True plasmids
- No homology to the mitochondrial genome
- Cryptic in nature
Three recognised types (1,2 and 3)
Transmitted vertically or horizontally
Source of genetic variation through transposable elements
- Disruption of existing genes
- Alteration of gene expression
- Chromosomeal rearrangement
- Addition of genetic material which caneveolve new functions
What was the first fungal genome sequenced in Africa
Fusarium circinatum
in Pretoria