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- Title
Organellar inheritance in the allopolyploid moss Plagiomnium curvalulum.
- Authors
Jankowiak-Siuda, Kamila; Pacak, Andrzej; Odrzykoski, Ireneusz; Wyatt, Robert; Szweykowska-Kuliñska, Zofia
- Abstract
Previous studies using isozymes have established that the moss Plagiomnium curvatulum is an allopolyploid species that originated from hybridization and chromosome doubling of Plagiomnium elatum and Plagiom- nium ellipticum. It has so far remained unknown which species is the donor of chioroplasts and mitochondria to P. curvatulum. Studies of organellar inheritance in bryophytes suggest that uniparental transmission was involved. Comparison of nucleotide sequence data of three chloroplast and three mitochondrial DNA markers from P. curvatulum and its parental species reveal that the chloroplast and mitochondrial sequences of P. cur- vatulum and P. ellipticum are identical and differ from homologous sequences of P. datum. Seven samples from five different populations of P. curvatulum all gave the same result. Both mitochondria and chloroplasts of P. curvatulum were inherited from P. ellipticum. The nucleotide substitution rate calculated for homologous organellar nucleotide sequences is 4.57 times higher in chloroplasts than in mitochondria. Moreover, substi- tution rates differ considerably between chloroplast and mitochondrial homologous intron sequences when allopolyploid species and their parental haploids from different genera of bryophytes are compared.
- Subjects
PLAGIOMNIUM; ISOENZYMES; SPECIES hybridization; BRYOPHYTES; NUCLEOTIDE sequence; MITOCHONDRIAL DNA; CHROMOSOME analysis
- Publication
Taxon, 2008, Vol 57, Issue 1, p145
- ISSN
0040-0262
- Publication type
Article