Linked Life Data

20505370

Source:http://linkedlifedata.com/resource/pubmed/id/20505370

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2011-5-6
pubmed:abstractText
During embryogenesis there is a major switch from dependence upon maternally-deposited products to reliance on products of the zygotic genome. In animals, this so-called maternal-to-zygotic transition occurs following a period of transcriptional quiescence. Recently, we have shown that the early embryo in Arabidopsis is also quiescent, a state inherited from the female gamete and linked to specific patterns of H3K9 dimethylation and TERMINAL FLOWER2 (TFL2) localization. We also demonstrated that CHROMOMETHYLASE 3 (CMT3) is required for H3K9 dimethylation in the egg cell and for normal embryogenesis during the first few divisions of the zygote. Subsequent analysis of CMT3 mutants points to a key role in egg cell reprogramming by controlling silencing in both transposon and euchromatic regions. A speculative model of the CMT3-induced egg cell silencing is presented here, based on these results and current data from the literature suggesting the potential involvement of small RNAs targeted to the egg cell, a process conceptually similar to the division of labor described in the male gametophyte for which we show that H3K9 modifications and TFL2 localization are reminiscent of the female gametophyte.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-11349138, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-11742384, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-11790305, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-12620192, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-14680640, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-16131496, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-17129777, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-17239600, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-19203581, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-19204068, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-19680290, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-20054610, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-20129810, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-20139161, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-20142834, http://linkedlifedata.com/resource/pubmed/commentcorrection/20505370-20208518
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1559-2324
pubmed:author
pubmed:copyrightInfo
© 2010 Landes Bioscience
pubmed:issnType
Electronic
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1167-70
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
A role for CHROMOMETHYLASE3 in mediating transposon and euchromatin silencing during egg cell reprogramming in Arabidopsis.
pubmed:affiliation
Laboratoire Génome et Développement des Plantes (LGDP), UMR 5096 IRD-CNRS-Université de Perpignan, Montpellier, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't