UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

English Journal

Karyogamy in rice zygotes: Actin filament-dependent migration of sperm nucleus, chromatin dynamics, and de novo gene expression.

Ohnishi Y1, Okamoto T.
Plant signaling & behavior.Plant Signal Behav.2015;10(2):e989021. doi: 10.4161/15592324.2014.989021.
In angiosperms, the fusion of a sperm cell with an egg cell, termed plasmogamy, triggers egg activation. Then, karyogamy, migration of the sperm nucleus toward the egg nucleus and their subsequent nuclear fusion, progresses, and de novo gene expression from the zygotic genome is initiated for early
PMID 25723729

Ohnishi Y1, Hoshino R1, Okamoto T2.
Plant physiology.Plant Physiol.2014 Jun 19;165(4):1533-1543. [Epub ahead of print]
In angiosperms, the conversion of an egg cell into a zygote involves two sequential gametic processes: plasmogamy, the fusion of the plasma membranes of male and female gametes, and karyogamy, the fusion of the gametic nuclei. In this study, the nuclei and nuclear membranes of rice (Oryza sativa) ga
PMID 24948834

Nucleolar organization, ribosomal DNA array stability, and acrocentric chromosome integrity are linked to telomere function.

Stimpson KM1, Sullivan LL2, Kuo ME3, Sullivan BA4.
PloS one.PLoS One.2014 Mar 24;9(3):e92432. doi: 10.1371/journal.pone.0092432. eCollection 2014.
The short arms of the ten acrocentric human chromosomes share several repetitive DNAs, including ribosomal RNA genes (rDNA). The rDNA arrays correspond to nucleolar organizing regions that coalesce each cell cycle to form the nucleolus. Telomere disruption by expressing a mutant version of telomere
PMID 24662969

Global Gene Silencing is Caused by the Dissociation of RNA Polymerase II from DNA in Mouse Oocytes

Abe Ken-ichiro,Inoue Azusa,Suzuki Masataka G. [他],AOKI Fugaku
The Journal of reproduction and development 56(5), 502-507, 2010-10-01
… We also observed dissociation of RPB1 from the DNA in full-grown oocytes treated with trichostatin A to decondense their chromatin, suggesting that chromatin condensation is not an essential process in gene silencing during oocyte growth. …
NAID 10027571758

Barnetova Irena,Fulka Helena,Fulka Jr Josef
Journal of Reproduction and Development 56(6), 601-606, 2010
… The boar spermatozoa consistently decondense in ovulated oocytes and form fully developed pronuclei with demethylated DNA (5-methylcytosine; …
NAID 130000305987

Hoshi Yoshikazu,Fukushima Kenji,Nagano Katsuya
Chromosome Botany 2(1), 39-43, 2007
… At prometaphase and early-metaphase, all chromosomes except for some small sized chromosomes had decondense segments at the distal regions in both arms. …
NAID 130000058157