Retrotransposon Polymorphisms Affect Genic Recombination in Maize
نویسندگان
چکیده
منابع مشابه
Retrotransposon polymorphisms affect genic recombination in maize.
Maize exhibits a high degree of intraspecific variation in genome structure, most of which is due to intergenic retrotransposon polymorphsisms among unrelated varieties. For example, a comparison of eight haplotypes of the bronze1 (bz1) locus, which contains numerous retrotransposons, showed that sequence similarity between any two haplotypes ranged from 25 to 84% (Wang and Dooner, 2006). In th...
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Although maize (Zea mays) retrotransposons are recombinationally inert, the highly polymorphic structure of maize haplotypes raises questions regarding the local effect of intergenic retrotransposons on recombination. To examine this effect, we compared recombination in the same genetic interval with and without a large retrotransposon cluster. We used three different bz1 locus haplotypes, McC,...
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We have asked here how the remarkable variation in maize haplotype structure affects recombination. We compared recombination across a genetic interval of 9S in 2 highly dissimilar heterozygotes that shared 1 parent. The genetic interval in the common haplotype is approximately 100 kb long and contains 6 genes interspersed with gene-fragment-bearing Helitrons and retrotransposons that, together...
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Retrotransposons constitute more than 40 percent of the human genome with L1, Alu, SVA, and HERVs known to remain active in transposition. Retrotransposition contribute to genetic diversity in the form of retrotransposon insertion polymorphism (RIP) that is defined as the presence or absence of a retrotransposon insertion among human populations at a specific genomic location. So far close to 5...
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ژورنال
عنوان ژورنال: The Plant Cell
سال: 2008
ISSN: 1040-4651,1532-298X
DOI: 10.1105/tpc.108.200213