Document Detail


Distribution of unlinked transpositions of a Ds element from a T-DNA locus on tomato chromosome 4.
MedLine Citation:
PMID:  8536985     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In maize, receptor sites for unlinked transpositions of Activator (Ac) elements are not distributed randomly. To test whether the same is true in tomato, the receptor sites for a Dissociation (Ds) element derived from Ac, were mapped for 26 transpositions unlinked to a donor T-DNA locus on chromosome 4. Four independent transposed Dss mapped to sites on chromosome 4 genetically unlinked to the donor T-DNA, consistent with a preference for transposition to unlinked sites on the same chromosome as opposed to sites on other chromosomes. There was little preference among the nondonor chromosomes, except perhaps for chromosome 2, which carried seven transposed Dss, but these could not be proven to be independent. However, these data, when combined with those from other studies in tomato examining the distribution of transposed Acs or Dss among nondonor chromosomes, suggest there may be absolute preferences for transposition irrespective of the chromosomal location of the donor site. If true, transposition to nondonor chromosomes in tomato would differ from that in maize, where the preference seems to be determined by the spatial arrangement of chromosomes in the interphase nucleus. The tomato lines carrying Ds elements at known locations are available for targeted transposon tagging experiments.
Authors:
J Bríza; B J Carroll; V I Klimyuk; C M Thomas; D A Jones; J D Jones
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Genetics     Volume:  141     ISSN:  0016-6731     ISO Abbreviation:  Genetics     Publication Date:  1995 Sep 
Date Detail:
Created Date:  1996-02-08     Completed Date:  1996-02-08     Revised Date:  2010-09-13    
Medline Journal Info:
Nlm Unique ID:  0374636     Medline TA:  Genetics     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  383-90     Citation Subset:  IM    
Affiliation:
Sainsbury Laboratory, John Innes Centre, Norwich, United Kingdom.
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MeSH Terms
Descriptor/Qualifier:
Base Sequence
Chromosome Mapping
Chromosomes
DNA Primers
DNA Transposable Elements*
DNA, Bacterial*
DNA, Plant*
Genes, Plant
Lycopersicon esculentum / genetics*
Molecular Sequence Data
Chemical
Reg. No./Substance:
0/DNA Primers; 0/DNA Transposable Elements; 0/DNA, Bacterial; 0/DNA, Plant; 0/T-DNA
Comments/Corrections

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