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PMID: 8389439 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Non-random distribution of transposable elements in the nuclear genome of plants.

Nucleic acids research ·Vol. 21 ·No. 10 ·1993-05-25 ·Pages 2369-73

Capel J, Montero LM, Martinez-Zapater JM, Salinas J

Abstract

We have studied the genomic distribution of five different families of plant transposable elements by analyzing their location in DNA fractions from maize and tobacco genomes fractionated according to base composition. The results show that each family of elements is preferentially integrated in one specific fraction of its respective host genome. This demonstrates that the distribution of transposable elements in the nuclear genome of plants is not random but compartmentalized, i.e., the elements are located in specific genomic compartments characterized by having a specific G+C content and representing a small proportion of the genomes. Furthermore, these compartments seem to correspond to the genomic regions where most of the plant genes are also located, suggesting a preferential integration of transposable elements in the transcriptionally active regions of the plant genome. The implications of these results on the current applications of transposon tagging techniques are discussed.

MeSH Terms
Base Composition Cell Nucleus/chemistry Centrifugation, Density Gradient Chemical Fractionation DNA/analysis DNA Transposable Elements Nucleic Acid Hybridization Plants/genetics Plants, Toxic Tobacco/genetics Zea mays/genetics
Chemicals
DNA Transposable Elements DNA
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Capel J
Departamento de Protección Vegetal, INIA, Madrid, Spain.
Montero L M
Martinez-Zapater J M
Salinas J
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Article Info
Journal
Nucleic acids research
Abbr.
Nucleic Acids Res
ISSN
0305-1048
DOI
10.1093/nar/21.10.2369
Published
1993-05-25
Pages
2369-73
Language
English
Region
England
NLM ID
0411011
PMCID
PMC309534
Subset
IM
External Links
PubMed source DOI: 10.1093/nar/21.10.2369 PMC Full Text View journal details
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