ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik1993
Restriction fragments homologous to mitochondrial plasmid-like DNAs are located within limited chromosomal regions on the rice nuclear genome.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The chromosomal locations of restriction fragments of nuclear DNA that were homologous to four mitochondrial plasmid-like DNAs, namely, B1, B2, B3 and B4, were analyzed by restriction fragment length polymorphism (RFLP) analysis in cultivated rice. Nine kinds of fragments homologous to plasmidlike DNAs were analyzed for their segregation in three different F2 populations derived from intercrosses between rice subspecies; these were found to be localized in three chromosomal regions: three, one and five kinds of nuclear homologues were situated on chromosomes 1,3 and 8, respectively. Nuclear homologues on a given chromosome were tightly linked even though they were homologous to different plasmid-like DNAs. The loci of nuclear homologues found commonly in two or three cultivars were found to be highly conserved, a result that is consistent with their stable transmission. These results and those of the Southern analysis suggest the independent integration of these sequences during the varietal differentiation of rice. The concentration of loci for nuclear homologues on chromosomes 1 and 8 suggests that these sequences were integrated non-randomly into these chromosomal regions.
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