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Title:   Author  item
                                            Choi, Yoon-Eitem
                                            Goodwin, Stephen

                                                         - *Steve*
  Submitted to: Phytopathology
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 4/15/2010
                                    Publication  Date: 8/7/2010
                                    Citation: Choi, Y., Goodwin, S.B. 2010. Gene Encoding a C-Type Cyclin in Mycosphaerella Graminicola is Involved in Mycelium Formation, Melanin Biosynthesis, Stress Response, and Pathogenicity. Phytopathology.Interpretive Summary:
                                Technical Abstract: Mycosphaerella graminicola is an important wheat pathogen causing septoria tritici blotch. To date, an efficient strategy to control M. graminicola has not been developed. More significantly, we have a limited understanding of the molecular mechanisms of M. graminicola pathogenicity. In this study, we attempted to characterize an MCC1-encoding c-type cyclin, a homologous gene to FCC1 in Fusarium verticillioides. Four independent MCC1 knock-out mutants were generated via Agrobacterium-mediated transformation (ATMT). All of the MCC1 mutants showed consistent multiple phenotypes. We could observe significant reductions in radial growth on PDA in all of the MCC1 mutants. In addition, MCC1 gene deletion mutants produced less mycelium on PDA, had increased melanin biosynthesis on agar plates, showed an increase in their stress tolerance response, and were reduced significantly in pathogenicity. These results indicate that the MCC1 gene is involved in multiple signaling pathways including pathogenicity in M. graminicola.


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