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Wheat genome structure: translocations during the course of polyploidization.
Funct Integr Genomics. 2006 Jan; 6(1):71-80.FI

Abstract

The genomic organization of Triticum timopheevii (2n=28, AtAtGG) was compared with hexaploid wheat T. aestivum (2n=42, AABBDD) by comparative mapping using microsatellites derived from bread wheat. Genetic maps for the two crosses T. timopheevii var. timopheevii x T. timopheevii var. typica and T. timopheevii K-38555xT. militinae were constructed. On the first population, 121 loci were mapped, and on the second population 103 loci. The transferability of the wheat markers to T. timopheevii was generally better for the A genome-specific markers (76-78% produced amplification products; 26 and 29% were polymorphic) than for B genome-specific markers (54% produced amplification products; 14 and 16% were polymorphic). Of the D genome-specific markers, one third produced amplification products in T. timopheevii, but only 5 and 2% were polymorphic in the corresponding mapping populations. The maps constructed confirmed the previously described translocation between chromosome arms 6AtS and 1GS and revealed at least two yet unknown rearrangements on chromosomes 4At and 6At09. The presence of other translocations and rearrangements between T. timopheevii and T. aestivum was demonstrated by a variety of markers mapping to nonhomoeologous positions.

Authors+Show Affiliations

Institute of Cytology and Genetics, Lavrentiev ave. 10, Novosibirsk, 630090, Russia. salina@bionet.nsc.ruNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

15983785

Citation

Salina, Elena A., et al. "Wheat Genome Structure: Translocations During the Course of Polyploidization." Functional & Integrative Genomics, vol. 6, no. 1, 2006, pp. 71-80.
Salina EA, Leonova IN, Efremova TT, et al. Wheat genome structure: translocations during the course of polyploidization. Funct Integr Genomics. 2006;6(1):71-80.
Salina, E. A., Leonova, I. N., Efremova, T. T., & Röder, M. S. (2006). Wheat genome structure: translocations during the course of polyploidization. Functional & Integrative Genomics, 6(1), 71-80.
Salina EA, et al. Wheat Genome Structure: Translocations During the Course of Polyploidization. Funct Integr Genomics. 2006;6(1):71-80. PubMed PMID: 15983785.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Wheat genome structure: translocations during the course of polyploidization. AU - Salina,Elena A, AU - Leonova,Irina N, AU - Efremova,Tatyana T, AU - Röder,Marion S, Y1 - 2005/06/28/ PY - 2004/12/20/received PY - 2005/04/21/accepted PY - 2005/04/20/revised PY - 2005/6/29/pubmed PY - 2006/2/17/medline PY - 2005/6/29/entrez SP - 71 EP - 80 JF - Functional & integrative genomics JO - Funct Integr Genomics VL - 6 IS - 1 N2 - The genomic organization of Triticum timopheevii (2n=28, AtAtGG) was compared with hexaploid wheat T. aestivum (2n=42, AABBDD) by comparative mapping using microsatellites derived from bread wheat. Genetic maps for the two crosses T. timopheevii var. timopheevii x T. timopheevii var. typica and T. timopheevii K-38555xT. militinae were constructed. On the first population, 121 loci were mapped, and on the second population 103 loci. The transferability of the wheat markers to T. timopheevii was generally better for the A genome-specific markers (76-78% produced amplification products; 26 and 29% were polymorphic) than for B genome-specific markers (54% produced amplification products; 14 and 16% were polymorphic). Of the D genome-specific markers, one third produced amplification products in T. timopheevii, but only 5 and 2% were polymorphic in the corresponding mapping populations. The maps constructed confirmed the previously described translocation between chromosome arms 6AtS and 1GS and revealed at least two yet unknown rearrangements on chromosomes 4At and 6At09. The presence of other translocations and rearrangements between T. timopheevii and T. aestivum was demonstrated by a variety of markers mapping to nonhomoeologous positions. SN - 1438-793X UR - https://www.unboundmedicine.com/medline/citation/15983785/Wheat_genome_structure:_translocations_during_the_course_of_polyploidization_ L2 - https://dx.doi.org/10.1007/s10142-005-0001-4 DB - PRIME DP - Unbound Medicine ER -