Linked Life Data

17248655

Source:http://linkedlifedata.com/resource/pubmed/id/17248655

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2010-6-28
pubmed:abstractText
Ribosomal gene compensation and magnification that might be detected on a whole-plant basis was not found in maize. Plants monosomic for chromosome 6 (the NOR chromosome) were compared with monosomic-8 and monosomic-10 plants, disomic sibs, and parental lines. Assuming no rDNA compensation, monosomic-6 plants showed approximately the decrease expected in rRNA cistron number. Monosomic-8 had a normal ribosomal gene number, while monosomic-10 showed a decrease; but further documentation is needed. Besides demonstrating the absence of gene compensation, the results document our previous conclusion that maize chromosome 6 carries DNA complementary to ribosomal RNA. Further documentation was provided from studies with trisomic chromosome 6 plants showing proportional increases in ribosomal gene number. Progeny of the monosomic plants crossed as males to a standard singlecross hybrid possessed expected ribosomal gene numbers suggesting the lack of ribosomal gene magnification.-The ragged (rgd) mutant of maize, suspected of being deficient in rRNA cistrons, had a normal number.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jun
pubmed:issn
0016-6731
pubmed:author
pubmed:issnType
Print
pubmed:volume
77
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
285-97
pubmed:dateRevised
2010-9-14
pubmed:year
1974
pubmed:articleTitle
The Nucleolus Organizer Region of Maize (ZEA MAYS L.): Tests for Ribosomal Gene Compensation or Magnification.
pubmed:affiliation
Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, Minnesota 55101 Department of Biological Sciences, Illinois State University, Normal, Illinois 61761.
pubmed:publicationType
Journal Article