Magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity, sexuality and host interaction
In this study, host-specific forms of the blast pathogen Magnaporthe oryzae in sub-Saharan Africa (SSA) were characterised from distinct cropping locations using a combination of molecular and biological assays. Finger millet blast populations in East Africa revealed a continuous genetic variation p...
| Autores principales: | , , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2012
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/79826 |
| _version_ | 1855520275630653440 |
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| author | Takan, J.P. Chipili, J. Muthumeenakshi, S. Talbot, N.J. Manyasa, E.O. Bandyopadhyay, Ranajit Sere, Y. Nutsugah, S.K. Talhinhas, P. Hossain, M.A. Brown, A. Sreenivasaprasad, S. |
| author_browse | Bandyopadhyay, Ranajit Brown, A. Chipili, J. Hossain, M.A. Manyasa, E.O. Muthumeenakshi, S. Nutsugah, S.K. Sere, Y. Sreenivasaprasad, S. Takan, J.P. Talbot, N.J. Talhinhas, P. |
| author_facet | Takan, J.P. Chipili, J. Muthumeenakshi, S. Talbot, N.J. Manyasa, E.O. Bandyopadhyay, Ranajit Sere, Y. Nutsugah, S.K. Talhinhas, P. Hossain, M.A. Brown, A. Sreenivasaprasad, S. |
| author_sort | Takan, J.P. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In this study, host-specific forms of the blast pathogen Magnaporthe oryzae in sub-Saharan Africa (SSA) were characterised from distinct cropping locations using a combination of molecular and biological assays. Finger millet blast populations in East Africa revealed a continuous genetic variation pattern and lack of clonal lineages, with a wide range of haplotypes. M. oryzae populations lacked the grasshopper (grh) element (96%) and appeared distinct to those in Asia. An overall near equal distribution (47–53%) of the mating types MAT1-1 and MAT1-2, high fertility status (84–89%) and the dominance of hermaphrodites (64%) suggest a strong sexual reproductive potential. Differences in pathogen aggressiveness and lack of cultivar incompatibility suggest the importance of quantitative resistance. Rice blast populations in West Africa showed a typical lineage-based structure. Among the nine lineages identified, three comprised ~90% of the isolates. Skewed distribution of the mating types MAT1-1 (29%) and MAT1-2 (71%) was accompanied by low fertility. Clear differences in cultivar compatibility within and between lineages suggest R gene-mediated interactions. Distinctive patterns of genetic diversity, sexual reproductive potential and pathogenicity suggest adaptive divergence of host-specific forms of M. oryzae populations linked to crop domestication and agricultural intensification. |
| format | Journal Article |
| id | CGSpace79826 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace798262024-08-27T10:35:22Z Magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity, sexuality and host interaction Takan, J.P. Chipili, J. Muthumeenakshi, S. Talbot, N.J. Manyasa, E.O. Bandyopadhyay, Ranajit Sere, Y. Nutsugah, S.K. Talhinhas, P. Hossain, M.A. Brown, A. Sreenivasaprasad, S. finger millet rice blast disease magnaporthe oryzae pathogen populations genetic variation mating type distribution fertility status pathogenicity adaptive divergence molecular biology biochemistry bioengineering biotechnology In this study, host-specific forms of the blast pathogen Magnaporthe oryzae in sub-Saharan Africa (SSA) were characterised from distinct cropping locations using a combination of molecular and biological assays. Finger millet blast populations in East Africa revealed a continuous genetic variation pattern and lack of clonal lineages, with a wide range of haplotypes. M. oryzae populations lacked the grasshopper (grh) element (96%) and appeared distinct to those in Asia. An overall near equal distribution (47–53%) of the mating types MAT1-1 and MAT1-2, high fertility status (84–89%) and the dominance of hermaphrodites (64%) suggest a strong sexual reproductive potential. Differences in pathogen aggressiveness and lack of cultivar incompatibility suggest the importance of quantitative resistance. Rice blast populations in West Africa showed a typical lineage-based structure. Among the nine lineages identified, three comprised ~90% of the isolates. Skewed distribution of the mating types MAT1-1 (29%) and MAT1-2 (71%) was accompanied by low fertility. Clear differences in cultivar compatibility within and between lineages suggest R gene-mediated interactions. Distinctive patterns of genetic diversity, sexual reproductive potential and pathogenicity suggest adaptive divergence of host-specific forms of M. oryzae populations linked to crop domestication and agricultural intensification. 2012-02 2017-02-13T13:41:35Z 2017-02-13T13:41:35Z Journal Article https://hdl.handle.net/10568/79826 en Limited Access Springer Takan, J.P., Chipili, J., Muthumeenakshi, S., Talbot, N. J., Manyasa, E.O., Bandyopadhyay, R., ... & Sreenivasaprasad, S. (2012). Magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity, sexuality and host interaction. Molecular Biotechnology, 50(2), 145-158. |
| spellingShingle | finger millet rice blast disease magnaporthe oryzae pathogen populations genetic variation mating type distribution fertility status pathogenicity adaptive divergence molecular biology biochemistry bioengineering biotechnology Takan, J.P. Chipili, J. Muthumeenakshi, S. Talbot, N.J. Manyasa, E.O. Bandyopadhyay, Ranajit Sere, Y. Nutsugah, S.K. Talhinhas, P. Hossain, M.A. Brown, A. Sreenivasaprasad, S. Magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity, sexuality and host interaction |
| title | Magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity, sexuality and host interaction |
| title_full | Magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity, sexuality and host interaction |
| title_fullStr | Magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity, sexuality and host interaction |
| title_full_unstemmed | Magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity, sexuality and host interaction |
| title_short | Magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity, sexuality and host interaction |
| title_sort | magnaporthe oryzae populations adapted to finger millet and rice exhibit distinctive patterns of genetic diversity sexuality and host interaction |
| topic | finger millet rice blast disease magnaporthe oryzae pathogen populations genetic variation mating type distribution fertility status pathogenicity adaptive divergence molecular biology biochemistry bioengineering biotechnology |
| url | https://hdl.handle.net/10568/79826 |
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