First data on chromosome mapping in model true bugs from basal infraorders Nepomorpha, Leptopodomorpha and Gerromorpha (Heteroptera) Текст научной статьи по специальности «Биологические науки»

1Б28

Bulletin of Medical Internet Conferences (ISSN 2224-6150)

2016. Volume 6. Issue 9

ID: 2016-09-4353-T-9520 Тезис

Стоянова Д.1, Грозева С.1, Анохин Б.А.2, Кузнецова В.Г.2

Первые данные о картировании хромосом модельных видов клопов из базальных инфраотрядов Nepomorpha, Leptopodomorpha и Gerromorpha (Heteroptera)

1Институт биоразнообразия и экосистемных исследований, БАН, София, Болгария ФГБУН Зоологический институт РАН, г. Санкт-Петербург, Россия

Stoianova D., Grozeva S., Anokhin B.A., Kuznetsova V.G.

First data on chromosome mapping in model true bugs from basal infraorders Nepomorpha, Leptopodomorpha

and Gerromorpha (Heteroptera)

Telomeres are important structures at the ends of eukaryotic chromosomes providing stability of their structure. These highly repeated short nucleotide motifs are evolutionarily stable in the phylogenetic branches of higher rank. The conserved repetitive DNA sequence, (TTAGG)n, presents at the telomeres of the majority of tested insects being considered as the phylogenetically ancestral telomere motif in Insecta; but in some insect taxa this telomere nucleotide sequence is absent (lost). Until recently, one of these taxa was suggested to be the true bugs' order Heteroptera. However, in the last few years we have showed that the (TTAGG)n motif occurs in the family Belostomatidae from the basal infraorder Nepomorpha (aquatic bugs) and in the sister to Heteroptera taxon Coleorrhyncha. Here, we report results of the FISH mapping of telomere (TTAGG)n sequence and, additionally, of ribosomal DNA (rDNA) in representatives of several aquatic bugs' families.

Ключевые слова: кариотип, FISH, теломеры, 18S r DNA

Keywords: karyotype, FISH, telomeres, 18S rDNA

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