| Title |
Genetic mapping of a major gene in triticale conferring resistance to bacterial leaf streak
|
|---|---|
| Published in |
Theoretical and Applied Genetics, December 2017
|
| DOI | 10.1007/s00122-017-3026-x |
| Pubmed ID | |
| Authors |
Aimin Wen, Malini Jayawardana, Jason Fiedler, Suraj Sapkota, Gongjun Shi, Zhao Peng, Sanzhen Liu, Frank F. White, Adam J. Bogdanove, Xuehui Li, Zhaohui Liu |
| Abstract |
A major gene conferring resistance to bacterial leaf streak was mapped to chromosome 5R in triticale. Bacterial leaf streak (BLS), caused by Xanthomonas translucens pv. undulosa (Xtu), is an important disease of wheat and triticale around the world. Although resistance to BLS is limited in wheat, several triticale accessions have high levels of resistance. To characterize the genetic basis of this resistance, we developed triticale mapping populations using a resistant accession (Siskiyou) and two susceptible accessions (UC38 and Villax St. Jose). Bulked segregant analysis in an F2 population derived from the cross of Siskiyou × UC38 led to the identification of a simple sequence repeat (SSR) marker (XSCM138) on chromosome 5R that co-segregated with the resistance gene. The cross of Siskiyou × Villax St. Jose was advanced into an F2:5 recombinant inbred line population and evaluated for BLS reaction. Genetic linkage maps on this population were assembled with markers generated using genotyping-by-sequencing as well as several SSR markers previously identified on 5R. Quantitative trait locus (QTL) mapping revealed a single major QTL on chromosome 5R, underlined by the same SSR marker as in the Siskiyou × UC38 population. The F1 hybrids of the two crosses were highly resistant to BLS, indicating that resistance is largely dominant. This work will facilitate introgression of this rye-derived BLS resistance gene into the wheat genome by molecular marker-mediated chromosome engineering. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 4 | 17% |
| Morocco | 1 | 4% |
| Brazil | 1 | 4% |
| Australia | 1 | 4% |
| Thailand | 1 | 4% |
| India | 1 | 4% |
| Malaysia | 1 | 4% |
| Spain | 1 | 4% |
| United Kingdom | 1 | 4% |
| Other | 0 | 0% |
| Unknown | 11 | 48% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 16 | 70% |
| Scientists | 7 | 30% |
Mendeley readers
The data shown below were compiled from readership statistics for 34 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 34 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 7 | 21% |
| Researcher | 4 | 12% |
| Student > Ph. D. Student | 3 | 9% |
| Professor | 2 | 6% |
| Student > Bachelor | 2 | 6% |
| Other | 4 | 12% |
| Unknown | 12 | 35% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 14 | 41% |
| Biochemistry, Genetics and Molecular Biology | 6 | 18% |
| Immunology and Microbiology | 1 | 3% |
| Social Sciences | 1 | 3% |
| Engineering | 1 | 3% |
| Other | 0 | 0% |
| Unknown | 11 | 32% |
Attention Score in Context
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Outputs of similar age from Theoretical and Applied Genetics
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