Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice
Quantitative trait loci (QTL) that confer broad-spectrum resistance (BSR) have been elusive targets of crop breeding programs. Bacterial leaf streak (BLS) and bacterial blight (BB), caused by Xanthomonas oryzae pv. oryzicola (Xoc) and Xanthomonas oryzae pv. oryzae (Xoo), respectively, are responsibl...
| Main Authors: | , , , , , , , , , , |
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| Format: | Conference Proceedings |
| Language: | Inglés |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/98290 |
| _version_ | 1855540439156785152 |
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| author | Bossa Castro, Ana M. Tekete, Cheick Raghavan, Chitra Delorean, Emily E. Dereeper, Alexis Verdier, Valerie M. Dagno, Karim Koita, Ousmane Mosquera Cifuentes, Gloria Maria Leung, Hei Leach, Jan E. |
| author_browse | Bossa Castro, Ana M. Dagno, Karim Delorean, Emily E. Dereeper, Alexis Koita, Ousmane Leach, Jan E. Leung, Hei Mosquera Cifuentes, Gloria Maria Raghavan, Chitra Tekete, Cheick Verdier, Valerie M. |
| author_facet | Bossa Castro, Ana M. Tekete, Cheick Raghavan, Chitra Delorean, Emily E. Dereeper, Alexis Verdier, Valerie M. Dagno, Karim Koita, Ousmane Mosquera Cifuentes, Gloria Maria Leung, Hei Leach, Jan E. |
| author_sort | Bossa Castro, Ana M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Quantitative trait loci (QTL) that confer broad-spectrum resistance (BSR) have been elusive targets of crop breeding programs. Bacterial leaf streak (BLS) and bacterial blight (BB), caused by Xanthomonas oryzae pv. oryzicola (Xoc) and Xanthomonas oryzae pv. oryzae (Xoo), respectively, are responsible for major losses in rice production in Asia and Africa. Controlling these two diseases is particularly important in Sub-Saharan Africa, where no sources of BSR are available in currently deployed varieties. Our goal is to identify novel, broad-spectrum resistance sources to control BLS and BB in rice, using a Multi-parent Advanced Generation Inter-Cross (MAGIC) population, derived from eight elite indica cultivars. MAGIC populations have an increased level of recombination and provide higher precision and resolution to detect QTL. The MAGIC parents and lines were genotyped and phenotyped in both greenhouse and field conditions by screening with diverse strains of Xoc and Xoo. Using genome-wide association and interval mapping analysis, we identified 37 strain-specific QTL, and 14 QTL effective against multiple X. oryzae strains. From these, three QTL are pathovar-specific and 11 confer resistance to both pathovars. By detecting phenotypic effects of causal alleles, we have identified resources that will facilitate a better understanding of how the involved genes contribute to resistance or susceptibility. Because the MAGIC founders are elite varieties, the BSR QTL identified can be rapidly incorporated into breeding programs to achieve more durable resistance to BLS and BB. |
| format | Conference Proceedings |
| id | CGSpace98290 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | CGSpace982902025-03-13T09:45:34Z Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice Bossa Castro, Ana M. Tekete, Cheick Raghavan, Chitra Delorean, Emily E. Dereeper, Alexis Verdier, Valerie M. Dagno, Karim Koita, Ousmane Mosquera Cifuentes, Gloria Maria Leung, Hei Leach, Jan E. rice orysa sativa l. xanthomonas quantitative trait loci disease resistance plant breeding Quantitative trait loci (QTL) that confer broad-spectrum resistance (BSR) have been elusive targets of crop breeding programs. Bacterial leaf streak (BLS) and bacterial blight (BB), caused by Xanthomonas oryzae pv. oryzicola (Xoc) and Xanthomonas oryzae pv. oryzae (Xoo), respectively, are responsible for major losses in rice production in Asia and Africa. Controlling these two diseases is particularly important in Sub-Saharan Africa, where no sources of BSR are available in currently deployed varieties. Our goal is to identify novel, broad-spectrum resistance sources to control BLS and BB in rice, using a Multi-parent Advanced Generation Inter-Cross (MAGIC) population, derived from eight elite indica cultivars. MAGIC populations have an increased level of recombination and provide higher precision and resolution to detect QTL. The MAGIC parents and lines were genotyped and phenotyped in both greenhouse and field conditions by screening with diverse strains of Xoc and Xoo. Using genome-wide association and interval mapping analysis, we identified 37 strain-specific QTL, and 14 QTL effective against multiple X. oryzae strains. From these, three QTL are pathovar-specific and 11 confer resistance to both pathovars. By detecting phenotypic effects of causal alleles, we have identified resources that will facilitate a better understanding of how the involved genes contribute to resistance or susceptibility. Because the MAGIC founders are elite varieties, the BSR QTL identified can be rapidly incorporated into breeding programs to achieve more durable resistance to BLS and BB. 2018-08 2018-11-22T19:01:45Z 2018-11-22T19:01:45Z Conference Proceedings https://hdl.handle.net/10568/98290 en Open Access Bossa-Castro, Ana M.; Tekete, Cheick; Raghavan, Chitra; Delorean, Emily; Dereeper, Alexis; Verdier, Valerie; Dagno, Karim; Koita, Ousmane; Mosquera Cifuentes, Gloria; Leung, Hei; Leach, Jan E. (2018). Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice. In: International Congress of Plant Pathology (ICPP) 2018: Plant Health in a Global Economy July 29- August 3-2018. 1 p. |
| spellingShingle | rice orysa sativa l. xanthomonas quantitative trait loci disease resistance plant breeding Bossa Castro, Ana M. Tekete, Cheick Raghavan, Chitra Delorean, Emily E. Dereeper, Alexis Verdier, Valerie M. Dagno, Karim Koita, Ousmane Mosquera Cifuentes, Gloria Maria Leung, Hei Leach, Jan E. Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice |
| title | Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice |
| title_full | Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice |
| title_fullStr | Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice |
| title_full_unstemmed | Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice |
| title_short | Broad-spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice |
| title_sort | broad spectrum resistance and susceptibility to bacterial blight and bacterial leaf streak of rice |
| topic | rice orysa sativa l. xanthomonas quantitative trait loci disease resistance plant breeding |
| url | https://hdl.handle.net/10568/98290 |
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