Mississippi State University
Peterson, Daniel G.
Diehl, Susan V.
Nelson, C. Dana
Date of Degree
Graduate Thesis - Open Access
Master of Science
College of Agriculture and Life Sciences
Department of Plant and Soil Sciences
A major disease damaging seedlings of Pinus palustris is caused by the fungus Mycosphaerella dearnessii. Population structure of this pathogen was studied in a population in Mississippi. High genetic diversity (0.65) was measured using microsatellite markers and coincides with the high number of vegetative compatibly groups observed. A 30 Mb genome sequence for a single isolate of M. dearnessii was assembled, representing 65% of the estimated genome size. Nearly all (93%) of the core set of genes present in eukaryotes were detected from a total of 10,996 predicted genes. A total of 853 enzymatic associations were identified along with several genes homologous to pathogenic genes in other fungal pathogens. These results provide insights into the infection process and host-pathogen interactions. Further investigating this pathosystem will lead to effective disease management strategies.
Bartlett, Benjamin Douglas, "Towards a Genome Sequence of the Brown Spot Needle Blight Pathogen (Mycosphaerella Dearnessii) Infecting Longleaf Pine" (2015). Theses and Dissertations. 4756.