12609608

Source:http://linkedlifedata.com/resource/pubmed/id/12609608

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0013936, umls-concept:C0017262, umls-concept:C0330148, umls-concept:C0439659, umls-concept:C0449774, umls-concept:C1519316, umls-concept:C2348867
pubmed:issue	1
pubmed:dateCreated	2003-2-28
pubmed:abstractText	Somatic embryogenesis of a gymnosperm, Picea abies, represents a sequence of specifically regulated developmental stages including proembryogenic mass (PEM), PEM-to-embryo transition, and early and late embryogeny. Here, we report cDNA array analysis of expression patterns of 373 genes in the beginning of P. abies embryo development. The analysis revealed a group of 107 genes (29% of arrayed cDNAs) which were upregulated upon PEM-to-embryo transition, then downregulated during early embryogeny and finally upregulated again at the beginning of late embryogeny. This major gene expression pattern was abrogated in a developmentally arrested cell line that is unable to pass through the PEM-to-embryo transition. Thirty-five genes (9.4% of arrayed cDNAs) were found to be differentially expressed during normal embryonic pattern formation. Among them, 22 genes (5.9% of arrayed cDNAs) were directly associated with embryo pattern formation and can be considered as marker genes for early stages of P. abies embryogenesis. The majority of the marker genes encode for proteins involved in translation and posttranslational modification. Among them, 18 genes displayed the major expression pattern.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/101167473
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Mar
pubmed:issn	1567-133X
pubmed:author	pubmed-author:BozhkovPeter VPV, pubmed-author:ClaphamDavid HDH, pubmed-author:SederoffRonald RRR, pubmed-author:van ZylLeonelL, pubmed-author:von ArnoldSaraS
pubmed:copyrightInfo	Copyright 2002 Elsevier Science B.V.
pubmed:issnType	Print
pubmed:volume	3
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	83-91
pubmed:dateRevised	2006-11-15
pubmed:meshHeading	pubmed-meshheading:12609608-Gene Expression, pubmed-meshheading:12609608-Gene Expression Profiling, pubmed-meshheading:12609608-Gene Expression Regulation, Developmental, pubmed-meshheading:12609608-Phylogeny, pubmed-meshheading:12609608-Picea
pubmed:year	2003
pubmed:articleTitle	Up, down and up again is a signature global gene expression pattern at the beginning of gymnosperm embryogenesis.
pubmed:affiliation	Forest Biotechnology Group, Centennial Campus, Box 7247, North Carolina State University, Raleigh, NC 27695, USA.
pubmed:publicationType	Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't