Linked Life Data

11247609

Source:http://linkedlifedata.com/resource/pubmed/id/11247609

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2001-3-14
pubmed:databankReference
pubmed:abstractText
A PCR fragment derived from a membrane-anchored endo-1,4-beta-glucanase cDNA was amplified using degenerated oligonucleotides and mRNA from oilseed rape (Brassica napus L.) siliques. Sequence analysis of the corresponding gene, Cel16, showed that the predicted Cel16 protein has high identity with the Arabidopsis KOR protein (94%). High-stringency genomic Southern analysis further revealed that Cel16 and KOR are most likely orthologous genes performing a similar function in both species. Northern blot and GUS analysis of transgenic Arabidopsis containing a fusion between a 2.0 kb Cel16 promoter fragment and the GUS reporter gene showed that Cel16 was expressed at a low level in the primary raceme, the young lateral stems, the elongation zone of the primary root and the older root base. By contrast, a high level of Cel16 mRNA accumulation was found in the young root and in the main stem carrying flowers and young siliques. Cel16 transcripts were localized to the apical meristem, cambium, primary xylem and cortex of oilseed rape stem tissue by in situ RT-PCR. A similar pattern of activity was found in the GUS analysis of transgenic Arabidopsis. Cel16 mRNA accumulation in the main stem was lower in the zone of most rapid cell elongation than in the subjacent, fully elongated internodes. Similarly, Cel16 transcripts accumulated to a higher level in leaves as they reached full size than during early leaf expansion. Analysis of the expression pattern in elongating, light-grown seedlings showed that Cel16 mRNA accumulated at a lower level in the elongating upper third than elsewhere in the hypocotyl. This is contrary to etiolated hypocotyls, where we found a higher expression level in the rapidly elongating upper part. This difference in expression most probably reflects a difference in cell wall assembly between light- and dark-grown seedlings.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0167-4412
pubmed:author
pubmed:issnType
Print
pubmed:volume
45
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
93-105
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:11247609-Arabidopsis, pubmed-meshheading:11247609-Brassica, pubmed-meshheading:11247609-Cellulase, pubmed-meshheading:11247609-DNA, Complementary, pubmed-meshheading:11247609-DNA, Plant, pubmed-meshheading:11247609-Gene Expression Regulation, Enzymologic, pubmed-meshheading:11247609-Gene Expression Regulation, Plant, pubmed-meshheading:11247609-Genes, Plant, pubmed-meshheading:11247609-Hypocotyl, pubmed-meshheading:11247609-Light, pubmed-meshheading:11247609-Membrane Proteins, pubmed-meshheading:11247609-Molecular Sequence Data, pubmed-meshheading:11247609-Phylogeny, pubmed-meshheading:11247609-Plant Proteins, pubmed-meshheading:11247609-Plant Stems, pubmed-meshheading:11247609-Plants, pubmed-meshheading:11247609-RNA, Messenger, pubmed-meshheading:11247609-Sequence Analysis, DNA, pubmed-meshheading:11247609-Tissue Distribution
pubmed:year
2001
pubmed:articleTitle
Expression of a membrane-anchored endo-1,4-beta-glucanase from Brassica napus, orthologous to KOR from Arabidopsis thaliana, is inversely correlated to elongation in light-grown plants.
pubmed:affiliation
Biotechnology Group, Danish Institute of Agricultural Sciences, Frederiksberg C.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't