Comparative analysis of pathogenicity and phylogenetic relationship in Magnaporthe grisea species complex
Outbreaks of rice blast have been a threat to the global production of rice. Members of the Magnaporthe grisea species complex cause blast disease on a wide range of gramineous hosts, including cultivated rice and other grass species. Recently, based on phylogenetic analyses and mating tests, isolat...
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Published in | PloS one Vol. 8; no. 2; p. e57196 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Public Library of Science
26.02.2013
Public Library of Science (PLoS) |
Subjects | |
Online Access | Get full text |
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Summary: | Outbreaks of rice blast have been a threat to the global production of rice. Members of the Magnaporthe grisea species complex cause blast disease on a wide range of gramineous hosts, including cultivated rice and other grass species. Recently, based on phylogenetic analyses and mating tests, isolates from crabgrass were separated from the species complex and named M. grisea. Then other isolates from grasses including rice were named as M. oryzae. Here, we collected 103 isolates from 11 different species of grasses in Korea and analyzed their phylogenetic relationships and pathogenicity. Phylogenetic analyses of multilocus sequences and DNA fingerprinting revealed that the haplotypes of most isolates were associated with their hosts. However, six isolates had different haplotypes from the expectation, suggesting potential host shift in nature. Results of pathogenicity tests demonstrated that 42 isolates from crabgrass and 19 isolates from rice and other grasses showed cross-infectivity on rice and crabgrass, respectively. Interestingly, we also found that the isolates from rice had a distinct deletion in the calmodulin that can be used as a probe. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Competing Interests: Yong-Hwan Lee is an Academic Editor for PLOS ONE. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials. Conceived and designed the experiments: JC SSH YHL. Performed the experiments: JC SYP BRK ISO JHR. Analyzed the data: JC SYP BRK JHR ISO SSH YHL. Contributed reagents/materials/analysis tools: SSH YHL. Wrote the paper: JC SSH YHL. |
ISSN: | 1932-6203 1932-6203 |
DOI: | 10.1371/journal.pone.0057196 |