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Genes Genet Syst. 2006 Aug;81(4):287-90.

Chromosome-specific satellite sequences in Turritis glabra.

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Laboratory of Plant Genetics, Graduate School of Agriculture, Kyoto University, Kyoto, Japan.


Two novel repetitive sequence families were isolated from Turritis glabra (2n = 2x = 12). These two repeat families are similar to those of centromeric repeats in Arabidopsis thaliana, are co-localized on one chromosome pair, and differ by about 20% from each other. Phylogenetic analysis revealed that the two repeat families of T. glabra are more similar to each other than to the centromeric repeat families of other Arabidopsis and related species. The relationships of satellite sequences reflected the species phylogeny, indicating that the replacement of satellite sequences has occurred in each species lineage independently, and shared variants could not have existed for a long time between species.

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