Analyses of chromosome copy number and expression level of four genes in the ciliate Chilodonella uncinata reveal a complex pattern that suggests epigenetic regulation.
Analyses of chromosome copy number and expression level of four genes in the ciliate Chilodonella uncinata reveal a complex pattern that suggests epigenetic regulation.
复制标题
对纤毛chilodonella uncinata中四个基因的染色体拷贝数和表达水平的分析揭示了一种复杂的模式,提示表观遗传调节。
DOI:
10.1016/j.gene.2012.04.067
复制
发表时间:
2012-08-10
期刊:
影响因子:
3.5
通讯作者:
Katz LA
中科院分区:
文献类型:
--
作者:
Bellec L;Katz LA
Chilodonella uncinata, like all ciliates, contains two distinct nuclei in every cell: a germline micronucleus and a somatic macronucleus. The macronucleus develops from the zygotic nucleus through a series of chromosomal rearrangements. Macronuclear development in C. uncinata yields a nucleus with highly amplified gene-sized chromosomes. The macronucleus is transcriptionally active during vegetative growth while there is no expression in the micronucleus except during a brief period following conjugation. Gene family evolution in ciliates occurs through complex processes including gene duplication and an alternative processing of scrambled genes. Here we use quantitative PCR to compare relative expression levels of eight genes (SSU-rDNA, Actin, α-Tubulin and five β-Tubulin sequences) to their abundance as macronuclear chromosomes. We show that three strains of the morphospecies C. uncinata share similar patterns across all loci. For example, we find an inverse correlation among five β-tubulin genes whereby the more abundant macronuclear chromosomes have lower levels of expression compared to less abundant chromosomes. We discuss implication of ours finding, which suggest an epigenetic mechanism maintains chromosome copy number in C. uncinata.
登录
查看更多内容
影响因子:
10.7
作者:
Robinson, T.;Katz, L. A.
通讯作者:
Katz, L. A.
DOI:
10.1083/jcb.101.3.852
发表时间:
1985-09
期刊:
The Journal of cell biology
影响因子:
--
作者:
Lewis SA;Lee MG;Cowan NJ
通讯作者:
Cowan NJ
DOI:
10.1073/pnas.68.8.1762
发表时间:
1971-01-01
影响因子:
11.1
作者:
BRYAN, J;WILSON, L
通讯作者:
WILSON, L
影响因子:
5.6
作者:
MONTEIRO, MJ;COX, RA
通讯作者:
COX, RA
影响因子:
3.5
作者:
Katz, LA;Lasek-Nesselquist, E;Snoeyenbos-West, OLO
通讯作者:
Snoeyenbos-West, OLO