Flow sorting of C-genome chromosomes from wild relatives of wheat Aegilops markgrafii, Ae. triuncialis and Ae. cylindrica, and their molecular organization.
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Tartalom: http://real.mtak.hu/26372/
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published


Type = Article
Cím:
Flow sorting of C-genome chromosomes from wild relatives of wheat Aegilops markgrafii, Ae. triuncialis and Ae. cylindrica, and their molecular organization.
Létrehozó:
Molnár, István
Vrána, Jan
Farkas, András
Kubaláková, Marie
Cseh, András
Molnár-Láng, Márta
DoleĹľel, Jaroslav
Kiadó:
Oxford University Press
Dátum:
2015
Téma:
Q1 Science (General) / természettudomány általában
QK Botany / növénytan
Tartalmi leírás:
Background and Aims: Aegilops markgrafii (CC) and its natural hybrids Ae. triuncialis (UtUtCtCt) and Ae. cylindrica (DcDcCcCc) represent a rich reservoir of useful genes for improvement of bread wheat (Triticum aestivum),
but the limited information available on their genome structure and the shortage of molecular (cyto-) genetic tools hamper the utilization of the extant genetic diversity. This study provides the complete karyotypes in the three species obtained after fluorescent in situ hybridization (FISH) with repetitive DNA probes, and evaluates the potential of flow cytometric chromosome sorting.
Methods: The flow karyotypes obtained after the analysis of 4’,6-diamidino-2-phenylindole (DAPI)-stained chromosomes
were characterized and the chromosome content of the peaks on the flow karyotypes was determined by FISH. Twenty-nine conserved orthologous set (COS) markers covering all seven wheat homoeologous chromosome groups were used for PCR with DNA amplified from flow-sorted chromosomes and genomic DNA.
Key Results: FISH with repetitive DNA probes revealed that chromosomes 4C, 5C, 7Ct, T6Ut S.6UtL-5CtL, 1Cc and 5Dc could be sorted with purities ranging from 66 to 91 %, while the remaining chromosomes could be sorted
in groups of 2–5. This identified a partial wheat–C-genome homology for group 4 and 5 chromosomes. In addition,
1C chromosomes were homologous with group 1 of wheat; a small segment from group 2 indicated 1C–2C rearrangement.
An extensively rearranged structure of chromosome 7C relative to wheat was also detected.
Conclusions: The possibility of purifying Aegilops chromosomes provides an attractive opportunity to investigate the structure and evolution of the Aegilops C genome and to develop molecular tools to facilitate the identification of alien chromatin and support alien introgression breeding in bread wheat.
Nyelv:
magyar
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
Azonosító:
Molnár, István and Vrána, Jan and Farkas, András and Kubaláková, Marie and Cseh, András and Molnár-Láng, Márta and Doležel, Jaroslav (2015) Flow sorting of C-genome chromosomes from wild relatives of wheat Aegilops markgrafii, Ae. triuncialis and Ae. cylindrica, and their molecular organization. Annals of Botany, 116. pp. 189-200. ISSN 0305-7364, ESSN: 1095-8290
Kapcsolat:
0.1093/aob/mcv073
625671
Létrehozó:
cc_by_nd
info:eu-repo/semantics/embargoedAccess