• We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
Logo of pnasPNASInfo for AuthorsSubscriptionsAboutThis Article
Proc Natl Acad Sci U S A. Aug 1988; 85(15): 5601–5604.
PMCID: PMC281807

Allopolyploidy in bryophytes: Multiple origins of Plagiomnium medium

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.

Full text

Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (884K), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References.

Images in this article

Click on the image to see a larger version.

Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Haufler CH, Soltis DE. Genetic evidence suggests that homosporous ferns with high chromosome numbers are diploid. Proc Natl Acad Sci U S A. 1986 Jun;83(12):4389–4393. [PMC free article] [PubMed]
  • Church GM, Gilbert W. Genomic sequencing. Proc Natl Acad Sci U S A. 1984 Apr;81(7):1991–1995. [PMC free article] [PubMed]
  • Werth CR, Guttman SI, Eshbaugh WH. Recurring origins of allopolyploid species in asplenium. Science. 1985 May 10;228(4700):731–733. [PubMed]
  • Palmer JD. Comparative organization of chloroplast genomes. Annu Rev Genet. 1985;19:325–354. [PubMed]

Articles from Proceedings of the National Academy of Sciences of the United States of America are provided here courtesy of National Academy of Sciences

Formats:

Related citations in PubMed

See reviews...See all...

Cited by other articles in PMC

See all...

Links

Recent Activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...