Allopolyploidy in bryophytes: Multiple origins of Plagiomnium medium
- 1 August 1988
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 85 (15) , 5601-5604
- https://doi.org/10.1073/pnas.85.15.5601
Abstract
Bryophytes are thought to be unique among land plants in lacking the important evolutionary process of allopolyploidy, which involves interspecific hybridization and chromosome doubling. Electrophoretic data show, however, that the polyploid moss Plagiomnium medium is an allopolyploid derivative of Plagiomnium ellipticum and Plagiomnium insigne, that P. medium has originated more than once from these progenitors, and that cross-fertilization results in interlocus genetic recombination. Evidence from restriction fragment length polymorphisms in chloroplast DNA implicates P. insigne as the female parent in interspecific hybridizations with P. ellipticum. Contrary to prevailing views, it appears that those evolutionary processes responsible for genetic differentiation and speciation in other land plants occur in the bryophytes as well.Keywords
This publication has 5 references indexed in Scilit:
- Methods for detection of single or low copy sequences in tomato on southern blotsPlant Molecular Biology Reporter, 1986
- Genetic evidence suggests that homosporous ferns with high chromosome numbers are diploidProceedings of the National Academy of Sciences, 1986
- COMPARATIVE ORGANIZATION OF CHLOROPLAST GENOMESAnnual Review of Genetics, 1985
- Recurring Origins of Allopolyploid Species in AspleniumScience, 1985
- Genomic sequencing.Proceedings of the National Academy of Sciences, 1984