Rmg10, a novel wheat blast resistance gene derived from Aegilops tauschii
Wheat blast, caused by Pyricularia oryzae (syn. Magnaporthe oryzae) pathotype Triticum (MoT), is a devastating disease that can result in up to 100% yield loss in affected fields. To find new resistance genes against wheat blast, we screened 199 accessions of Aegilops tauschii, the D genome progenit...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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American Phytopathological Society
2024
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| Acceso en línea: | https://hdl.handle.net/10568/162654 |
| _version_ | 1855536889545621504 |
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| author | Yoshioka, Motohiro Kishii, Masahiro Singh, Pawan Kumar Inoue, Yoshihiro Vy, Trinh Thi Phuong Tosa, Yukio Asuke, Soichiro |
| author_browse | Asuke, Soichiro Inoue, Yoshihiro Kishii, Masahiro Singh, Pawan Kumar Tosa, Yukio Vy, Trinh Thi Phuong Yoshioka, Motohiro |
| author_facet | Yoshioka, Motohiro Kishii, Masahiro Singh, Pawan Kumar Inoue, Yoshihiro Vy, Trinh Thi Phuong Tosa, Yukio Asuke, Soichiro |
| author_sort | Yoshioka, Motohiro |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Wheat blast, caused by Pyricularia oryzae (syn. Magnaporthe oryzae) pathotype Triticum (MoT), is a devastating disease that can result in up to 100% yield loss in affected fields. To find new resistance genes against wheat blast, we screened 199 accessions of Aegilops tauschii, the D genome progenitor of common wheat (Triticum aestivum), by seedling inoculation assays with Brazilian MoT isolate Br48 and found 14 resistant accessions. A synthetic hexaploid wheat line (Ldn/KU-2097) derived from a cross between the T. turgidum ‘Langdon’ (Ldn) and resistant A. tauschii accession KU-2097 exhibited resistance in seedlings and spikes against Br48. In an F2 population derived from ‘Chinese Spring’ × Ldn/KU-2097, resistant and susceptible individuals segregated in a 3:1 ratio, suggesting that the resistance from KU-2097 is controlled by a single dominant gene. We designated this gene Rmg10. Genetic mapping using an F2:3 population from the same cross mapped the RMG10 locus to the short arm of chromosome 2D. Rmg10 was ineffective against Bangladesh isolates but effective against Brazilian isolates. Field tests in Bolivia showed increased spike resistance in a synthetic octaploid wheat line produced from a cross between common wheat cultivar ‘Gladius’ and KU-2097. These results suggest that Rmg10 would be beneficial in farmers’ fields in South America. |
| format | Journal Article |
| id | CGSpace162654 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | American Phytopathological Society |
| publisherStr | American Phytopathological Society |
| record_format | dspace |
| spelling | CGSpace1626542025-10-26T12:55:57Z Rmg10, a novel wheat blast resistance gene derived from Aegilops tauschii Yoshioka, Motohiro Kishii, Masahiro Singh, Pawan Kumar Inoue, Yoshihiro Vy, Trinh Thi Phuong Tosa, Yukio Asuke, Soichiro aegilops tauschii magnaporthe pyricularia oryzae resistance genes wheat Wheat blast, caused by Pyricularia oryzae (syn. Magnaporthe oryzae) pathotype Triticum (MoT), is a devastating disease that can result in up to 100% yield loss in affected fields. To find new resistance genes against wheat blast, we screened 199 accessions of Aegilops tauschii, the D genome progenitor of common wheat (Triticum aestivum), by seedling inoculation assays with Brazilian MoT isolate Br48 and found 14 resistant accessions. A synthetic hexaploid wheat line (Ldn/KU-2097) derived from a cross between the T. turgidum ‘Langdon’ (Ldn) and resistant A. tauschii accession KU-2097 exhibited resistance in seedlings and spikes against Br48. In an F2 population derived from ‘Chinese Spring’ × Ldn/KU-2097, resistant and susceptible individuals segregated in a 3:1 ratio, suggesting that the resistance from KU-2097 is controlled by a single dominant gene. We designated this gene Rmg10. Genetic mapping using an F2:3 population from the same cross mapped the RMG10 locus to the short arm of chromosome 2D. Rmg10 was ineffective against Bangladesh isolates but effective against Brazilian isolates. Field tests in Bolivia showed increased spike resistance in a synthetic octaploid wheat line produced from a cross between common wheat cultivar ‘Gladius’ and KU-2097. These results suggest that Rmg10 would be beneficial in farmers’ fields in South America. 2024-09 2024-11-22T18:21:44Z 2024-11-22T18:21:44Z Journal Article https://hdl.handle.net/10568/162654 en Limited Access American Phytopathological Society Yoshioka, M., Kishii, M., Singh, P. K., Inoue, Y., Vy, T. T. P., Tosa, Y., & Asuke, S. (2024). Rmg10, a novel wheat blast resistance gene derived from Aegilops tauschii. Phytopathology, 114(9), 2113-2120. https://doi.org/10.1094/phyto-01-24-0018-r |
| spellingShingle | aegilops tauschii magnaporthe pyricularia oryzae resistance genes wheat Yoshioka, Motohiro Kishii, Masahiro Singh, Pawan Kumar Inoue, Yoshihiro Vy, Trinh Thi Phuong Tosa, Yukio Asuke, Soichiro Rmg10, a novel wheat blast resistance gene derived from Aegilops tauschii |
| title | Rmg10, a novel wheat blast resistance gene derived from Aegilops tauschii |
| title_full | Rmg10, a novel wheat blast resistance gene derived from Aegilops tauschii |
| title_fullStr | Rmg10, a novel wheat blast resistance gene derived from Aegilops tauschii |
| title_full_unstemmed | Rmg10, a novel wheat blast resistance gene derived from Aegilops tauschii |
| title_short | Rmg10, a novel wheat blast resistance gene derived from Aegilops tauschii |
| title_sort | rmg10 a novel wheat blast resistance gene derived from aegilops tauschii |
| topic | aegilops tauschii magnaporthe pyricularia oryzae resistance genes wheat |
| url | https://hdl.handle.net/10568/162654 |
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