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| Content Provider | Springer Nature Link |
|---|---|
| Author | Fu, Shulan Tang, Zongxiang Ren, Zhenglong |
| Copyright Year | 2009 |
| Abstract | Newly synthesized wheat-rye allopolyploids, derived from Triticum aestivum Mianyang11 × S. cereale Kustro, were investigated by sequential fluorescent in situ hybridization (FISH) and genomic in situ hybridization (GISH) using rye tandem repeat pSc200 and rye genomic DNA as probes, respectively, over the first, second and third allopolyploid generations. FISH signals of pSc200 could be observed at both telomeres/subtelomeres of all 14 chromosomes of the parental rye. In the first allopolyploid generation, there were ten rye chromosomes bearing FISH signals at both telomeres/subtelomeres and four rye chromosomes bearing FISH signals at only one telomere/subtelomere. However, in the second and the third allopolyploid generations, there were 12 rye chromosomes bearing FISH signals at both telomeres/subtelomeres and 2 rye chromosomes bearing FISH signals at only one telomere/subtelomere. Rye telomeric segments were transferred to the centromeric region of wheat chromosomes in some cells and small segments derived from non-telomeric regions of rye chromosome were transferred to the telomeric region of wheat chromosomes in some other cells. These observations indicated that the rye telomeric/subtelomeric region was unstable in newly synthesized wheat-rye allopolyploids and allopolyploidization was accompanied by rapid inter/intra-genomic exchange. The inter-genomic exchange may have occurred in somatic cells. |
| Starting Page | 97 |
| Ending Page | 103 |
| Page Count | 7 |
| File Format | |
| ISSN | 09189440 |
| Journal | Journal of Plant Research |
| Volume Number | 123 |
| Issue Number | 1 |
| e-ISSN | 16180860 |
| Language | English |
| Publisher | Springer Japan |
| Publisher Date | 2009-10-10 |
| Publisher Place | Japan |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Chromosome variation Centromere Telomere Wheat-rye allopolyploid Plant Biochemistry Plant Physiology Plant Ecology Plant Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
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