Linked Life Data

2298730

Source:http://linkedlifedata.com/resource/pubmed/id/2298730

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1990-3-7
pubmed:abstractText
Transcription and Northern dot blot analyses were used to determine the relationship between light-induced changes in RNA levels and transcription in barley and maize plastids. Overall plastid transcription activity is near maximum and largely light independent in apical sections of 4.5-day-old dark-grown barley seedings. With continued development in the dark, transcription activity in barley plastids declined precipitously, but transcription could be reactivated if plants were illuminated. Illumination of 8-day-old dark-grown barley seedlings increased the transcription of psbA, rbcL, and 16 S rDNA; however, the stimulation of psbA transcription was 2-4-fold more than rbcL or 16 S rDNA. Differential enhancement of psbA transcription occurred when 4.5- or 8-day-old dark-grown seedlings were illuminated, and the influence persisted in plants illuminated for 72 h. Illumination of 8-day-old dark-grown barley caused an increase in psbA and rbcL mRNA levels, but the increase in psbA mRNA was greater than that of rbcL. Similarly, illumination of 9-day-old dark-grown maize increased plastid transcription activity and the levels of psbA and rbcL mRNA. These results indicate that light can modulate overall plastid transcription activity and differentially stimulate the transcription of genes including psbA.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
5
pubmed:volume
265
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1895-902
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Light-induced transcription of chloroplast genes. psbA transcription is differentially enhanced in illuminated barley.
pubmed:affiliation
Department of Biochemistry and Biophysics, Texas A&M University, College Station 77843-2128.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.