Retroposon insertions and the chronology of avian sex chromosome evolution.

Retroposon insertions and the chronology of avian sex chromosome evolution.
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逆转录子插入和鸟类性染色体进化的年表

DOI:
10.1093/molbev/msr147
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发表时间:
2011
影响因子:
10.7
通讯作者:
Schmitz J
Schmitz J
中科院分区:
生物学1区
文献类型:
--
作者:
Kriegs JO;Brosius J;Schmitz J

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绝大多数现存的鸟类具有高度分化的Z和W性染色体。来自配子体(异性染色体上的同源物)的核苷酸序列数据表明,这种分歧发生在整个早期鸟类进化过程中,通过逐步停止相同的性染色体区域之间的重组。在这里,我们从一个新的角度研究了鸟类性染色体分化,使用反转录插入和随机插入/缺失的配子体基因树的重建。我们的数据证实了CHD 1 Z/CHD 1 W基因在新颌类的祖先中分化,而NIPBLZ/NIPBLW基因在新鸟类祖先中分化,并且在鸡雁亚科中独立存在。鸡、鸣禽和鸭类祖先的ATP 5A 1 Z/ATP 5A 1 W基因在鸡、鸣禽和鸭类中的分化是独立的。在Neoaves中,这对基因分别在六个样本代表中的每一个中分化。此外,我们研究的三个位点可以作为通用的,易于使用的独立工具的Neoaves或Neognathae的分子性别鉴定。
The vast majority of extant birds possess highly differentiated Z and W sex chromosomes. Nucleotide sequence data from gametologs (homologs on opposite sex chromosomes) suggest that this divergence occurred throughout early bird evolution via stepwise cessation of recombination between identical sex chromosomal regions. Here, we investigated avian sex chromosome differentiation from a novel perspective, using retroposon insertions and random insertions/deletions for the reconstruction of gametologous gene trees. Our data confirm that theCHD1Z/CHD1Wgenes differentiated in the ancestor of the neognaths, whereas theNIPBLZ/NIPBLWgenes diverged in the neoavian ancestor and independently within Galloanserae. The divergence of theATP5A1Z/ATP5A1Wgenes in galloanserans occurred independently in the chicken, the screamer, and the ancestor of duck-related birds. In Neoaves, this gene pair differentiated in each of the six sampled representatives, respectively. Additionally, three of our investigated loci can be utilized as universal, easy-to-use independent tools for molecular sexing of Neoaves or Neognathae.
DOI: 10.1073/pnas.95.14.8147
发表时间: 1998-07-07
影响因子: 11.1
作者:
Fridolfsson, AK;Cheng, H;Ellegren, H
通讯作者: Ellegren, H
DOI: 10.1023/a:1009241528994
发表时间: 1999-01-01
影响因子: 2.6
作者:
Pigozzi, MI;Solari, AJ
通讯作者: Solari, AJ
DOI: 10.1093/oxfordjournals.molbev.a026283
发表时间: 2000-12-01
影响因子: 10.7
作者:
García-Moreno, J;Mindell, DP
通讯作者: Mindell, DP
DOI: 10.1534/genetics.108.090324
发表时间: 2008-10-01
期刊: GENETICS
影响因子: 3.3
作者:
Nam, Kiwoong;Ellegren, Hans
通讯作者: Ellegren, Hans
DOI: 10.1023/a:1009278914829
发表时间: 1999-06-01
影响因子: 2.6
作者:
Shetty, S;Griffin, DK;Graves, JAM
通讯作者: Graves, JAM