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- W1517417671 abstract "The history of MADS box genes is well-known in angiosperms. While duplication events and gene losses occur frequently, gene structure and intron positions are very conserved. We investigated all six introns in a duplicated MADS box gene (deficiens, def) in selected Impatiens taxa, thereby assessing intron features. For the first time, our study provides a comparison of molecular changes in all introns of a gene from a phylogenetic perspective. Interestingly, a uniform pattern of molecular evolution in the introns of each copy was not observed, but intron length increases, decreases, and size retention can be found in each copy. A tendency to accumulate long autapomorphic indels is also present, thus, a longer intron length does not reflect a higher number of parsimony-informative characters. Substitution rates vary between introns of each gene copy. While four of the six introns of def1 exhibit a change in their substitution rate, five of the six def2 introns maintain their rates throughout the genus albeit at different levels. In MADS box genes several regulatory sequences are found residing in introns. Thus, presence of putative regulatory motifs was investigated. Most of them are not conserved in position and usually present in only one of the gene copies. In addition, the potential for phylogenetic reconstruction of introns in both def copies is shortly discussed." @default.
- W1517417671 created "2016-06-24" @default.
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- W1517417671 creator A5031050935 @default.
- W1517417671 creator A5045077881 @default.
- W1517417671 creator A5070940051 @default.
- W1517417671 date "2014-01-21" @default.
- W1517417671 modified "2023-10-16" @default.
- W1517417671 title "Intron evolution in a phylogenetic perspective: Divergent trends in the two copies of the duplicated def gene in Impatiens L. (Balsaminaceae)" @default.
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- W1517417671 doi "https://doi.org/10.1111/jse.12070" @default.
- W1517417671 hasPublicationYear "2014" @default.
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