ArticleCurrent genetics2005
Heterogeneity of intron presence or absence in rDNA genes of the lichen species Physcia aipolia and P. stellaris.
Article in Current genetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 34 citations in OpenAlex.
- Surveying lichen diversity in forests: A comparison of expert mapping and eDNA metabarcoding of bark surfaces.MycoKeys · 2024Article
- How do genes flow? Identifying potential dispersal mode for the semi-aquatic lichen Dermatocarpon luridum using spatial modelling and photobiont markers.BMC ecology · 2020Article
- Characterizing the ribosomal tandem repeat and its utility as a DNA barcode in lichen-forming fungi.BMC evolutionary biology · 2020Article
- IMA Genome - F13: Draft genome sequences ofIMA fungus · 2020Article
- "Cryptic" group-I introns in the nuclear SSU-rRNA gene of Verticillium dahliae.Current genetics · 2014Article
- Miocene and Pliocene dominated diversification of the lichen-forming fungal genus Melanohalea (Parmeliaceae, Ascomycota) and Pleistocene population expansions.BMC evolutionary biology · 2012Article
- Article
- Patterns of group I intron presence in nuclear SSU rDNA of the Lichen family Parmeliaceae.Journal of molecular evolution · 2007Article
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4 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Intron origin and evolution are of high interest, yet the rates of insertion and loss are unclear. To investigate their spread, we studied ribosomal (r)DNA introns from the closely related lichens Physcia aipolia and P. stellaris. Both taxa are replete with rDNA spliceosomal introns and autocatalytic group I introns, many of which show presence/absence polymorphism when screened with the PCR approach. This initially suggested that Physcia could be a model for studying intron retention and loss. However, during the course of a population-level analysis, we discovered widespread intron presence/absence heterogeneity within lichen thalli. To address this result, we sequenced multiple clones encoding nuclear rDNA and the single-copy elongation factor-1alpha (EF-1alpha) from individual thalli. These data showed extensive rDNA heterogeneity within individuals, rather than the presence of multiple fungi within a thallus. Our results suggest that considerable care must be taken when interpreting intron presence/absence in lichen rDNA, an observation that has general implications for the study of rDNA intron evolution.
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