The Karyotype of Amoeba borokensis from a “proteus-like” Amoeba Group (Amoebozoa: Euamoebida)
- 作者: Demin S.1, Podlipaeva Y.1, Berdieva M.1, Goodkov A.1
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隶属关系:
- Institute of Cytology
- 期: 卷 12, 编号 1 (2018)
- 页面: 85-91
- 栏目: Article
- URL: https://journals.rcsi.science/1990-519X/article/view/212590
- DOI: https://doi.org/10.1134/S1990519X18010054
- ID: 212590
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详细
The karyotype of Amoeba borokensis was studied for the first time. At the metaphase of mitosis, this species has a haploid set of chromosomes (n = 27). This is exactly half of the diploid karyotype in Amoeba proteus (strain B). At first glance, it confirms the idea that has recently appeared that one species arises from another via multiple changes in chromosome number. However, comparative cytogenetic analysis revealed that four orthologous chromosomes from haploid sets of these two species were not distinguished by the pattern of DAPI-stained bands. It shows that the genetic distance between A. proteus and A. borokensis is higher than was believed earlier and these two species have diverged from each other. Analysis of data on the life cycles of A. proteus and A. borokensis shows that a kind of so-called “cyclic polyploidy” takes place in “proteus-like” amoebae. “Cyclic polyploidy” has recently been considered as an alternative to the sexual process for genetic recombination in agamic protists from different macrotaxons.
作者简介
S. Demin
Institute of Cytology
Email: pelgood1@gmail.com
俄罗斯联邦, St. Petersburg, 194064
Yu. Podlipaeva
Institute of Cytology
Email: pelgood1@gmail.com
俄罗斯联邦, St. Petersburg, 194064
M. Berdieva
Institute of Cytology
Email: pelgood1@gmail.com
俄罗斯联邦, St. Petersburg, 194064
A. Goodkov
Institute of Cytology
编辑信件的主要联系方式.
Email: pelgood1@gmail.com
俄罗斯联邦, St. Petersburg, 194064