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Independent wheat B and G genome origins in outcrossing Aegilops progenitor haplotypes.
Mol Biol Evol. 2007 Jan; 24(1):217-27.MB

Abstract

The origin of modern wheats involved alloploidization among related genomes. To determine if Aegilops speltoides was the donor of the B and G genomes in AABB and AAGG tetraploids, we used a 3-tiered approach. Using 70 amplified fragment length polymorphism (AFLP) loci, we sampled molecular diversity among 480 wheat lines from their natural habitats encompassing all S genome Aegilops, the putative progenitors of wheat B and G genomes. Fifty-nine Aegilops representatives for S genome diversity were compared at 375 AFLP loci with diploid, tetraploid, and 11 nulli-tetrasomic Triticum aestivum wheat lines. B genome-specific markers allowed pinning the origin of the B genome to S chromosomes of A. speltoides, while excluding other lineages. The outbreeding nature of A. speltoides influences its molecular diversity and bears upon inferences of B and G genome origins. Haplotypes at nuclear and chloroplast loci ACC1, G6PDH, GPT, PGK1, Q, VRN1, and ndhF for approximately 70 Aegilops and Triticum lines (0.73 Mb sequenced) reveal both B and G genomes of polyploid wheats as unique samples of A. speltoides haplotype diversity. These have been sequestered by the AABB Triticum dicoccoides and AAGG Triticum araraticum lineages during their independent origins.

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Authors+Show Affiliations

Kilian B
Max Planck Institute for Plant Breeding Research, Köln, Germany.
Ozkan H
No affiliation info available
Deusch O
No affiliation info available
Effgen S
No affiliation info available
Brandolini A
No affiliation info available
Kohl J
No affiliation info available
Martin W
No affiliation info available
Salamini F
No affiliation info available

MeSH

Crosses, GeneticGenome, PlantHaplotypesHybridization, GeneticPhylogenyPoaceaePolymorphism, Restriction Fragment LengthPolyploidyTriticum

Pub Type(s)

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

Language

eng

PubMed ID

17053048

Citation

Kilian, B, et al. "Independent Wheat B and G Genome Origins in Outcrossing Aegilops Progenitor Haplotypes." Molecular Biology and Evolution, vol. 24, no. 1, 2007, pp. 217-27.
Kilian B, Ozkan H, Deusch O, et al. Independent wheat B and G genome origins in outcrossing Aegilops progenitor haplotypes. Mol Biol Evol. 2007;24(1):217-27.
Kilian, B., Ozkan, H., Deusch, O., Effgen, S., Brandolini, A., Kohl, J., Martin, W., & Salamini, F. (2007). Independent wheat B and G genome origins in outcrossing Aegilops progenitor haplotypes. Molecular Biology and Evolution, 24(1), 217-27.
Kilian B, et al. Independent Wheat B and G Genome Origins in Outcrossing Aegilops Progenitor Haplotypes. Mol Biol Evol. 2007;24(1):217-27. PubMed PMID: 17053048.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Independent wheat B and G genome origins in outcrossing Aegilops progenitor haplotypes. AU - Kilian,B, AU - Ozkan,H, AU - Deusch,O, AU - Effgen,S, AU - Brandolini,A, AU - Kohl,J, AU - Martin,W, AU - Salamini,F, Y1 - 2006/10/19/ PY - 2006/10/21/pubmed PY - 2007/4/3/medline PY - 2006/10/21/entrez SP - 217 EP - 27 JF - Molecular biology and evolution JO - Mol Biol Evol VL - 24 IS - 1 N2 - The origin of modern wheats involved alloploidization among related genomes. To determine if Aegilops speltoides was the donor of the B and G genomes in AABB and AAGG tetraploids, we used a 3-tiered approach. Using 70 amplified fragment length polymorphism (AFLP) loci, we sampled molecular diversity among 480 wheat lines from their natural habitats encompassing all S genome Aegilops, the putative progenitors of wheat B and G genomes. Fifty-nine Aegilops representatives for S genome diversity were compared at 375 AFLP loci with diploid, tetraploid, and 11 nulli-tetrasomic Triticum aestivum wheat lines. B genome-specific markers allowed pinning the origin of the B genome to S chromosomes of A. speltoides, while excluding other lineages. The outbreeding nature of A. speltoides influences its molecular diversity and bears upon inferences of B and G genome origins. Haplotypes at nuclear and chloroplast loci ACC1, G6PDH, GPT, PGK1, Q, VRN1, and ndhF for approximately 70 Aegilops and Triticum lines (0.73 Mb sequenced) reveal both B and G genomes of polyploid wheats as unique samples of A. speltoides haplotype diversity. These have been sequestered by the AABB Triticum dicoccoides and AAGG Triticum araraticum lineages during their independent origins. SN - 0737-4038 UR - https://www.unboundmedicine.com/medline/citation/17053048/Independent_wheat_B_and_G_genome_origins_in_outcrossing_Aegilops_progenitor_haplotypes_ L2 - https://academic.oup.com/mbe/article-lookup/doi/10.1093/molbev/msl151 DB - PRIME DP - Unbound Medicine ER -