Uncovering homeologous relationships between tetraploid Agropyron cristatum and bread wheat genomes using COS markers.
Journal
TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
ISSN: 1432-2242
Titre abrégé: Theor Appl Genet
Pays: Germany
ID NLM: 0145600
Informations de publication
Date de publication:
Oct 2019
Oct 2019
Historique:
received:
09
10
2018
accepted:
06
07
2019
pubmed:
18
7
2019
medline:
27
2
2020
entrez:
18
7
2019
Statut:
ppublish
Résumé
Using COS markers, the study reveals homeologous relationships between tetraploid Agropyron cristatum and bread wheat to support alien introgression breeding of wheat. Crested wheatgrass (Agropyron cristatum L. Gaertn.) is a wild relative of wheat that possesses many genes that are potentially useful in wheat improvement. The species comprises a complex of diploid, tetraploid and hexaploid forms. In this study, wheat-A. cristatum chromosome, telosome and translocation lines were used to characterize syntenic relationships between tetraploid A. cristatum and bread wheat. Prior to mapping COS markers, the cytogenetic stock lines were characterized for fertility and by FISH and GISH for karyotype stability. Out of 328 COS markers selected for the study, 279 consistently amplified products in tetraploid A. cristatum, and, out of these, 139 were polymorphic between tetraploid crested wheatgrass and wheat. Sixty-nine markers were found to be suitable for the detection of tetraploid A. cristatum chromosomes 1P-6P in wheat, ranging from 6 to 17 markers per chromosome. BLASTn of the source ESTs resulted in significant hits for 67 markers on the wheat pseudomolecules. Generally, COS markers of the same homeologous group were detected on similar arms in both Agropyron and wheat. However, some intragenomic duplications and chromosome rearrangements were detected in tetraploid A. cristatum. These results provide new insights into the structure and evolution of the tetraploid A. cristatum genome and will facilitate the exploitation of the wild species for introgression breeding of bread wheat.
Identifiants
pubmed: 31312850
doi: 10.1007/s00122-019-03394-1
pii: 10.1007/s00122-019-03394-1
pmc: PMC6763527
doi:
Substances chimiques
Genetic Markers
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2881-2898Subventions
Organisme : Grantová Agentura České Republiky
ID : 16-16992S
Organisme : National Science Foundation
ID : OTKA K116277
Organisme : H2020 Marie Skłodowska-Curie Actions (AGELWHEAT)
ID : H2020-MSCA-IF-2016-746253
Organisme : Ministerio de Economía y Competitividad with co-financing from the European Regional Development Fund
ID : AGL2014-52445-R
Organisme : ERDF project Plants as a tool for sustainable global development
ID : No. CZ.02.1.01/0.0/0.0/16_019/0000827
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