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Alterations in subtelomeric tandem repeats during early stages of allopolyploidy in wheat.
Genome. 2004 Oct; 47(5):860-7.G

Abstract

The genomic content of the subtelomeric repeated sequences Spelt1 and Spelt52 was studied by dot, Southern, and in situ hybridization in 11 newly synthesized amphiploids of Aegilops and Triticum, and data were compared with the parental plants. Spelt1 had reduced copy numbers in the first generation of three synthetic amphiploids, but two others did not change; Spelt52 was amplified in nine amphiploids and did not change in two. In the second allopolyploid generation, Spelt1 copy number did not change, whereas there was amplification of Spelt52 in some allopolyploids and decreases in others. Neither allopolyploidy level nor the direction of the cross affected the patterns of change in the newly synthesized amphiploids. Changes did not result from intergenomic recombination because similar alterations were noticed in allopolyploids with and without Ph1, a gene that suppresses homoeologous pairing. No differences in Spelt1 and Spelt52 tandem organization were found by Southern hybridization. The significance of these data are discussed in relation to the establishment of newly formed allopolyploids.

Authors+Show Affiliations

The Institute of Cytology and Genetics, SB RAS, Lavrentieva 10, Novosibirsk, 630090, Russia. salina@bionet.nsc.ruNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15499400

Citation

Salina, E A., et al. "Alterations in Subtelomeric Tandem Repeats During Early Stages of Allopolyploidy in Wheat." Genome, vol. 47, no. 5, 2004, pp. 860-7.
Salina EA, Numerova OM, Ozkan H, et al. Alterations in subtelomeric tandem repeats during early stages of allopolyploidy in wheat. Genome. 2004;47(5):860-7.
Salina, E. A., Numerova, O. M., Ozkan, H., & Feldman, M. (2004). Alterations in subtelomeric tandem repeats during early stages of allopolyploidy in wheat. Genome, 47(5), 860-7.
Salina EA, et al. Alterations in Subtelomeric Tandem Repeats During Early Stages of Allopolyploidy in Wheat. Genome. 2004;47(5):860-7. PubMed PMID: 15499400.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Alterations in subtelomeric tandem repeats during early stages of allopolyploidy in wheat. AU - Salina,E A, AU - Numerova,O M, AU - Ozkan,H, AU - Feldman,M, PY - 2004/10/23/pubmed PY - 2005/4/1/medline PY - 2004/10/23/entrez SP - 860 EP - 7 JF - Genome JO - Genome VL - 47 IS - 5 N2 - The genomic content of the subtelomeric repeated sequences Spelt1 and Spelt52 was studied by dot, Southern, and in situ hybridization in 11 newly synthesized amphiploids of Aegilops and Triticum, and data were compared with the parental plants. Spelt1 had reduced copy numbers in the first generation of three synthetic amphiploids, but two others did not change; Spelt52 was amplified in nine amphiploids and did not change in two. In the second allopolyploid generation, Spelt1 copy number did not change, whereas there was amplification of Spelt52 in some allopolyploids and decreases in others. Neither allopolyploidy level nor the direction of the cross affected the patterns of change in the newly synthesized amphiploids. Changes did not result from intergenomic recombination because similar alterations were noticed in allopolyploids with and without Ph1, a gene that suppresses homoeologous pairing. No differences in Spelt1 and Spelt52 tandem organization were found by Southern hybridization. The significance of these data are discussed in relation to the establishment of newly formed allopolyploids. SN - 0831-2796 UR - https://www.unboundmedicine.com/medline/citation/15499400/Alterations_in_subtelomeric_tandem_repeats_during_early_stages_of_allopolyploidy_in_wheat_ L2 - https://cdnsciencepub.com/doi/10.1139/g04-044?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -