| Title |
Genetic analysis of resistance to six virus diseases in a multiple virus-resistant maize inbred line
|
|---|---|
| Published in |
Theoretical and Applied Genetics, February 2014
|
| DOI | 10.1007/s00122-014-2263-5 |
| Pubmed ID | |
| Authors |
Jose Luis Zambrano, Mark W. Jones, Eric Brenner, David M. Francis, Adriana Tomas, Margaret G. Redinbaugh |
| Abstract |
Novel and previously known resistance loci for six phylogenetically diverse viruses were tightly clustered on chromosomes 2, 3, 6 and 10 in the multiply virus-resistant maize inbred line, Oh1VI. Virus diseases in maize can cause severe yield reductions that threaten crop production and food supplies in some regions of the world. Genetic resistance to different viruses has been characterized in maize populations in diverse environments using different screening techniques, and resistance loci have been mapped to all maize chromosomes. The maize inbred line, Oh1VI, is resistant to at least ten viruses, including viruses in five different families. To determine the genes and inheritance mechanisms responsible for the multiple virus resistance in this line, F1 hybrids, F2 progeny and a recombinant inbred line (RIL) population derived from a cross of Oh1VI and the virus-susceptible inbred line Oh28 were evaluated. Progeny were screened for their responses to Maize dwarf mosaic virus, Sugarcane mosaic virus, Wheat streak mosaic virus, Maize chlorotic dwarf virus, Maize fine streak virus, and Maize mosaic virus. Depending on the virus, dominant, recessive, or additive gene effects were responsible for the resistance observed in F1 plants. One to three gene models explained the observed segregation of resistance in the F2 generation for all six viruses. Composite interval mapping in the RIL population identified 17 resistance QTLs associated with the six viruses. Of these, 15 were clustered in specific regions of chr. 2, 3, 6, and 10. It is unknown whether these QTL clusters contain single or multiple virus resistance genes, but the coupling phase linkage of genes conferring resistance to multiple virus diseases in this population could facilitate breeding efforts to develop multi-virus resistant crops. |
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| Country | Count | As % |
|---|---|---|
| Ecuador | 1 | 20% |
| Unknown | 4 | 80% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 5 | 100% |
Mendeley readers
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 3% |
| India | 1 | 1% |
| Unknown | 74 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 17 | 22% |
| Researcher | 16 | 21% |
| Student > Ph. D. Student | 9 | 12% |
| Student > Doctoral Student | 6 | 8% |
| Student > Bachelor | 5 | 6% |
| Other | 11 | 14% |
| Unknown | 13 | 17% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 41 | 53% |
| Biochemistry, Genetics and Molecular Biology | 10 | 13% |
| Social Sciences | 2 | 3% |
| Mathematics | 1 | 1% |
| Business, Management and Accounting | 1 | 1% |
| Other | 4 | 5% |
| Unknown | 18 | 23% |
Attention Score in Context
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Outputs of similar age from Theoretical and Applied Genetics
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