Linked Life Data

15960623

Source:http://linkedlifedata.com/resource/pubmed/id/15960623

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2005-6-17
pubmed:abstractText
In the current studies, we examined sugar-inducible gene expression using the Arabidopsis thaliana line sGsL, which carries luciferase (LUC) and beta-glucuronidase (GUS) reporter genes under the control of a 210-bp promoter derived from the sweet potato sporamin gene (Spo(min)). We isolated an enhancer activation-tagged mutant of this line that showed high-level expression of LUC and GUS under non-inducing low-sugar conditions. The Activator ofSpo(min)::LUC2 (ASML2) gene located close to the enhancer encodes a protein belonging to a previously uncharacterized class of CCT (CONSTANS, CONSTANS-like, TOC1) domain proteins. Overexpression of ASML2 cDNA in the sGsL line resulted in enhanced expression of not only LUC and GUS reporters but also several endogenous sugar-inducible genes, including Atbeta-Amy, ApL3, and VSP2. Transient co-expression of 35S::ASML2 with the Spo(min)::LUC or Atbeta-Amy::LUC reporter in protoplasts resulted in an approximately 2.4 or 5.6-fold transactivation of LUC expression, respectively. Expression of ASML2 was high in reproductive organs, and expression in seedlings was slightly enhanced by sugars, but not by abscisic acid. These results suggest that ASML2 functions as a transcriptional activator and regulates the expression of at least a subset of sugar-inducible genes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0960-7412
pubmed:author
pubmed:issnType
Print
pubmed:volume
43
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
142-52
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Activation tagging of a gene for a protein with novel class of CCT-domain activates expression of a subset of sugar-inducible genes in Arabidopsis thaliana.
pubmed:affiliation
Laboratory of Biochemistry, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't