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| Author(s): | Sim, S.;
Chang, T.;
Curley, J.;
Warnke, S. E.;
Barker, R. E.;
Jung, G. |
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| Author Affiliation: | Sim, Chang, Curley, and Jung: Department of Plant Pathology, University of Wisconsin-Madison, Madison, Wisconsin; Warnke: National Arboretum, Washington DC; and Barker: USDA-ARS National Forage Seed Production Research Center, Corvallis, Oregon |
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| Title: | Chromosomal rearrangements differentiating the ryegrass genome from the Triticeae, oat, and rice genomes using common heterologous RFLP probes |
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| Source: | Theoretical and Applied Genetics. Vol. 110, 2005, p. 1011-1019. |
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| Publishing Information: | Berlin: Springer |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Genomes; Lolium; Triticeae; Oryza sativa; Restriction fragment length polymorphism; Soil probes; Hordeum vulgare; Avena sativa; Random amplified polymorphic DNA markers; Isoenzymes; Loci; Comparisons
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| Abstract/Contents: | "An restriction fragment length polymorphism (RFLP)-based genetic map of ryegrass (Lolium) was constructed for comparative mapping with other Poa-ceae species using heterologous anchor probes. The genetic map contained 120 RFLP markers from cDNA clones of barley (Hordeum vulgare L.), oat (Avena sativa L.), and rice (Oryza sativa L.), covering 664 cM on seven linkage groups (LGs). The genome comparisons of ryegrass relative to the Triticeae, oat, and rice extended the syntenic relationships among the species. Seven ryegrass linkage groups were represented by 10 syntenic segments of Triticeae chromosomes, 12 syntenic segments of oat chromosomes, or 16 syntenic segments of rice chromosomes, suggesting that the ryegrass genome has a high degree of genome conservation relative to the Triticeae, oat, and rice. Furthermore, we found ten large-scale chromosomal rearrangements that characterize the ryegrass genome. In detail, a chromosomal rearrangement was observed on ryegrass LG4 relative to the Triticeae, four rearrangements on ryegrass LGs2, 4, 5, and 6 relative to oat, and five rearrangements on ryegrass LGs1, 2, 4, 5, and 7 relative to rice. Of these, seven chromosomal rearrangements are reported for the first time in this study. The extended comparative relationships reported in this study facilitate the transfer of genetic knowledge from well-studied major cereal crops to ryegrass." |
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| Language: | English |
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| References: | 33 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sim, S., T. Chang, J. Curley, S. E. Warnke, R. E. Barker, and G. Jung. 2005. Chromosomal rearrangements differentiating the ryegrass genome from the Triticeae, oat, and rice genomes using common heterologous RFLP probes. Theor. Appl. Genet. 110:p. 1011-1019. |
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