open access

https://hdl.handle.net/2115/907

TTAGG Telomeric Repeats in Chromosomes of Some Insects and Other Arthropods

英語

Tegenaria

1999-09

Springer Science+Business Media B.V., Formerly Kluwer Academic Publishers B.V.

Chromosome Research

7(6)

449-460

We studied the occurrence of the TTAGG telomere repeats by fluorescence in situ hybridization (FISH) and Southern hybridization in ten insect species and two other arthropods. (TTAGG)n-containing telomeres were found in three Lepidoptera species, the silkworm Bombyx mori (in which the telomeric sequence was recently discovered), the flour moth Ephestia kuehniella, and the wax moth Galleria mellonella, in one species of Hymenoptera, the honey bee Apis mellifera, in one species of Coleoptera, the bark beetle Ips typographus, in one species of Orthoptera, the locust Locusta migratoria, and in a crustacean, the amphipod Gammarus pulex. They were absent in another species of Coleoptera, the mealworm Tenebrio molitor, in two representatives of Diptera, Drosophila melanogaster and Megaselia scalaris, in a species of Heteroptera, the bug Pyrrhocoris apterus and in a spider, Tegenaria ferruginea. Our results, which confirm and extend earlier observations, suggest that (TTAGG)n was a phylogenetically ancestral telomere motif in the insect lineage but was lost independently in different groups, being replaced probably by other telomere motifs. In the Coleoptera this must have happened rather recently as even members of the same family, Curculionidae, differ with respect to the telomeric DNA.

学術雑誌論文

Accepted Manuscript

The original publication is available at www.springerlink.com. Former publisher: Kluwer Academic Publishers

0967-3849

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