Abstract
Sol3 transposons are mobile elements defined by long terminal inverted repeats which are found in tomato and potato. Members of the Sol3 family have been isolated from a variety of solanaceous species including Solanum tuberosum (potato), S. demissum, S. chacoense, Lycopersicon esculentum (tomato), and L. hirsutum. While highly conserved elements are found within different species, Sol3 terminal inverted repeats can also flank unrelated sequences. Southern blot analysis indicates that Sol3 elements are less prevalent in the potato (approximately 50 copies) than in the tomato (>100 copies) genome. No Sol3-hybridizing sequences were observed in tobacco. While a number of Sol3 elements ranging in size from 500 bp to 2 kbp were se-quenced, no transposase coding domains could be identified within the internal regions of the elements. The data suggest that the Sol3represent a heterogeneous family of nonautonomous transposable elements associated with an as-yet-unidentified autonomous transposon.
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Abbreviations
- TIR:
-
terminal inverted repeat
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Oosumi, T., Belknap, W.R. Characterization of the Sol3 family of nonautonomous transposable elements in tomato and potato. J Mol Evol 45, 137–144 (1997). https://doi.org/10.1007/PL00006213
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DOI: https://doi.org/10.1007/PL00006213