ArticleJournal of molecular evolution2007
Variability of nuclear SSU-rDNA group introns within Septoria species: incongruence with host sequence phylogenies.
Article in Journal of molecular evolution, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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4 citing papers in PubMed, 17 citations in OpenAlex.
- Analysis of small and large subunit rDNA introns from several ectomycorrhizal fungi species.PloS one · 2021Article
- Article
- Variations of SSU rDNA group I introns in different isolates of Cordyceps militaris and the loss of an intron during cross-mating.Journal of microbiology (Seoul, Korea) · 2014Article
- Finding single copy genes out of sequenced genomes for multilocus phylogenetics in non-model fungi.PloS one · 2011Article
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Authors and funding
3 authors at 2 institutions in 1 country.
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Abstract
We report structural features and distribution patterns of 26 different group I introns located at three distinct nucleotide positions in nuclear small subunit ribosomal DNA (SSU-rDNA) of 10 Septoria and 4 other anamorphic species related to the teleomorphic genus Mycosphaerella. Secondary structure and sequence characteristics assigned the introns to the common IC1 and IE groups. Intron distribution patterns and phylogenetic relationships strongly suggested that some horizontal transfer events have occurred among the closely related fungal species sampled. To test this hypothesis, we used a comparative approach of intron- and rDNA-based phylogenies through MP- and ML-based topology tests. Our results showed two statistically well-supported major incongruences between the intron and the equivalent internal transcribed spacer (ITS) tree comparisons made. Such absence of a co-evolutive history between group I introns and host sequences is discussed relatively to the intron structures, the mechanisms of intron movement, and the biology of the Mycosphaerella pathogenic fungi.
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