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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yang, Huaan Tao, Ye Zheng, Zequn Shao, Di Li, Zhenzhong Sweetingham, Mark W. Buirchell, Bevan J. Li, Chengdao |
| Copyright Year | 2012 |
| Abstract | Selection for phomopsis stem blight disease (PSB) resistance is one of the key objectives in lupin (Lupinus angustifolius L.) breeding programs. A cross was made between cultivar Tanjil (resistant to PSB) and Unicrop (susceptible). The progeny was advanced into F8 recombinant inbred lines (RILs). The RIL population was phenotyped for PSB disease resistance. Twenty plants from the RIL population representing disease resistance and susceptibility was subjected to next-generation sequencing (NGS)-based restriction site-associated DNA sequencing on the NGS platform Solexa HiSeq2000, which generated 7,241 single nucleotide polymorphisms (SNPs). Thirty-three SNP markers showed the correlation between the marker genotypes and the PSB disease phenotype on the 20 representative plants, which were considered as candidate markers linked to a putative R gene for PSB resistance. Seven candidate markers were converted into sequence-specific PCR markers, which were designated as PhtjM1, PhtjM2, PhtjM3, PhtjM4, PhtjM5, PhtjM6 and PhtjM7. Linkage analysis of the disease phenotyping data and marker genotyping data on a F8 population containing 187 RILs confirmed that all the seven converted markers were associated with the putative R gene within the genetic distance of 2.1 CentiMorgan (cM). One of the PCR markers, PhtjM3, co-segregated with the R gene. The seven established PCR markers were tested in the 26 historical and current commercial cultivars released in Australia. The numbers of “false positives” (showing the resistance marker allele band but lack of the putative R gene) for each of the seven PCR markers ranged from nil to eight. Markers PhtjM4 and PhtjM7 are recommended in marker-assisted selection for PSB resistance in the Australian national lupin breeding program due to its wide applicability on breeding germplasm and close linkage to the putative R gene. The results demonstrated that application of NGS technology is a rapid and cost-effective approach in development of markers for molecular plant breeding. |
| Starting Page | 511 |
| Ending Page | 522 |
| Page Count | 12 |
| File Format | |
| ISSN | 00405752 |
| Journal | Theoretical and Applied Genetics |
| Volume Number | 126 |
| Issue Number | 2 |
| e-ISSN | 14322242 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2012-10-20 |
| Publisher Place | Berlin/Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Plant Breeding/Biotechnology Plant Genetics & Genomics Agriculture Plant Biochemistry Biochemistry Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Medicine Biotechnology Agronomy and Crop Science |
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