Polymerase chain reaction amplification of the Bag320 satellite family reveals the ancestral library and past gene conversion events in Bacillus rossius (Insecta Phasmatodea)

被引：34

作者：

Cesari, M ^{[1
]}

Luchetti, A ^{[1
]}

Passamonti, M ^{[1
]}

Scali, V ^{[1
]}

Mantovani, B ^{[1
]}

机构：

[1] Univ Bologna, Dipartimento Biol Evoluzionist Sperimentale, I-40126 Bologna, Italy

来源：

GENE | 2003年 / 312卷

关键词：

bacillus; gene conversion; parthenogenesis; satellite DNA; library hypothesis;

D O I：

10.1016/S0378-1119(03)00625-5

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Polymerase chain reaction amplifications of genomic DNA in 17 individuals of bisexual and parthenogenetic populations of three subspecies of Bacillus rossius (Insecta Phasmatodea) revealed that the species still harbours the whole variability of the ancestral Bag320 satellite family, since monomers of all non-hybrid Bacillus taxa plus private sequences occur in it. Bag320 monomers had not been rescued as a major satellite component in B. rossius, but possibly represent the remnant of a set of diverging sequences present in the Bacillus ancestor. Following the library hypothesis, these monomer variants have been differently amplified along the evolutionary pathways leading to present taxa in agreement with the mitochondrial phylogeny of the genus. The putative converted tracts observed are explained as the results of past gene conversion events. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：289 / 295

页数：7

共 33 条

[1] Alpha-satellite DNA of primates: old and new families [J].