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Extraordinary centromeres: differences in the meiotic chromosomes of two rock lizards species Darevskia portschinskii and Darevskia raddeiстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 24 февраля 2021 г.
- Авторы: Spangenberg Victor, Arakelyan Marine, Galoyan Eduard, Pankin Mark, Petrosyan Ruzanna, Stepanyan Ilona, Grishaeva Tatiana, Danielyan Felix, Kolomiets Oxana
- Журнал: PeerJ
- Том: 7
- Год издания: 2019
- Издательство: PeerJ
- Местоположение издательства: San Francisco
- Номер статьи: e6360
- DOI: 10.7717/peerj.6360
- Аннотация: Here for the first time, we present the result of comparative immunocytochemical study of primary spermatocyte nuclei spreads from the leptotene to diplotene stages of meiotic prophase I in two species: D. portschinskii and D. raddei. We observed similar chromosome lengths for both synaptonemal complex (SC) karyotypes as well as a similar number of crossing over sites. However, unexpected differences in the number and distribution of anti-centromere antibody (ACA) foci were detected in the SC structure of bivalents of the two species. In all examined D. portschinskii spermatocyte nuclei, one immunostained centromere focus was detected per SC bivalent. In contrast, in almost every studied D. raddei nuclei we identified three to nine SCs with additional immunostained ACA foci per SC bivalent. Thus, the obtained results allow us to identify species-specific karyotype features, previously not been detected using conventional mitotic chromosome analysis. Presumably the additional centromere foci are result of epigenetic chromatin modifications. We assume that this characteristic of the D. raddei karyotype could represent useful marker for the future studies of parthenogenetic species hybrid karyotypes related to D. raddei.
- Добавил в систему: Kolomiets Oxana Leonidovna
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | spangenberg_peerj_2019.pdf | 28,8 МБ | 15 июля 2021 [span] |