Group I intron versus ITS sequences in phylogeny of cetrarioid lichens.
Author
Summary, in English
Phylogenetic trees based on group I intron sequences and on internal transcribed spacer (ITS) sequences of mycobiont ribosomal genes were calculated and compared. Eight cetrarioid and four non-cetrarioid species of the Parmeliaceae were compared. The phylogeny based on group I intron sequences is partly congruent with the ITS sequence phylogeny. Group I intron sequences are presumably less informative for infragenic studies. The introns have a length of 214–233 nucleotides, and differ at up to 33% of the bases between species. All introns analysed are located between the positions 1516 and 1517 of the fungal 18S ribosomal RNA gene. Cetrarioid lichens form a non-homogeneous group within the Parmeliaceae according to both group I intron and ITS sequences.
Department/s
Publishing year
1999
Language
English
Pages
441-449
Publication/Series
Lichenologist
Volume
31
Issue
5
Document type
Journal article
Publisher
Cambridge University Press
Topic
- Botany
Status
Published
ISBN/ISSN/Other
- ISSN: 0024-2829