Skip Navigation



MBE Advance Access published online on October 19, 2006
Molecular Biology and Evolution, doi:10.1093/molbev/msl151
This Article
Right arrow Advance Access manuscript (PDF) Freely available
Right arrow Supplementary Material
Right arrow All Versions of this Article:
24/1/217    most recent
msl151v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Kilian, B.
Right arrow Articles by Salamini, F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Kilian, B.
Right arrow Articles by Salamini, F.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2006. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org
Accepted October 5, 2006

Research Article

Independent Wheat B and G Genome Origins in Outcrossing Aegilops Progenitor Haplotypes

B. Kilian 1, H. Özkan 2, O. Deusch 3, S. Effgen 4, A. Brandolini 5, J. Kohl 6, W. Martin 3, and F. Salamini 7 *

1 Max-Planck-Institute for Plant Breeding Research, Köln, Germany; Institute of Botany III, Heinrich-Heine-Universität Düsseldorf, Germany
2 Department of Field Crops, Faculty of Agriculture, University of Cukurova, Adana, Turkey
3 Institute of Botany III, Heinrich-Heine-Universität Düsseldorf, Germany
4 Max-Planck-Institute for Plant Breeding Research, Köln, Germany
5 Istituto Sperimentale per la Cerealicoltura - CRA, S. Angelo Lodigiano, Italy
6 Institute of Bioinformatics, Heinrich-Heine-Universität Düsseldorf, Germany
7 Max-Planck-Institute for Plant Breeding Research, Köln, Germany; Fondazione Parco Tecnologico Padano, Lodi, Italy

* To whom correspondence should be addressed.
F. Salamini, E-mail: francesco.salamini{at}tecnoparco.org


  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 three-tiered approach. Using 70 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 representative for S genome diversity were compared at 375 AFLP loci to diploid, tetraploid, and 11 nullitetrasomic T. aestivum wheat lines. B genome-specific markers allowed to pin the origin of the B genome to S chromosomes of Aegilops speltoides, while excluding other lineages. The outbreeding nature of Ae. speltoides influences its molecular diversity and bears upon inferences of B and G genome origin. Haplotypes at nuclear and chloroplast loci ACC1, G6PDH, GPT, PGK1, Q, VRN1 and ndhF for ~70 Aegilops and Triticum lines (0.73 Mb sequenced) reveal both B and G genomes of polyploid wheats as unique samples of Ae. speltoides haplotype diversity. This have been sequestered by the AABB T. dicoccoides and AAGG T. araraticum lineages during their independent origins.

Keywords: molecular evolution; Triticum; Aegilops; hybridization; alloploidization; AFLPs.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Crop Sci.Home page
S. Wu, M. Pumphrey, and G. Bai
Molecular Mapping of Stem-Rust-Resistance Gene Sr40 in Wheat
Crop Sci., August 7, 2009; 49(5): 1681 - 1686.
[Abstract] [Full Text] [PDF]

Home page
 Proc. Natl. Acad. Sci. USAHome page
D. Chalupska, H. Y. Lee, J. D. Faris, A. Evrard, B. Chalhoub, R. Haselkorn, and P. Gornicki
Acc homoeoloci and the evolution of wheat genomes
PNAS, July 15, 2008; 105(28): 9691 - 9696.
[Abstract] [Full Text] [PDF]

Home page
 Syst BiolHome page
B. R. Holland, A. C. Clarke, and H. M. Meudt
Optimizing Automated AFLP Scoring Parameters to Improve Phylogenetic Resolution
Syst Biol, June 1, 2008; 57(3): 347 - 366.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
W. Li, L. Huang, and B. S. Gill
Recurrent Deletions of Puroindoline Genes at the Grain Hardness Locus in Four Independent Lineages of Polyploid Wheat1,[W],[OA]
Plant Physiology, January 1, 2008; 146(1): 200 - 212.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.