Advertisement

The botanical magazine = Shokubutsu-gaku-zasshi

, Volume 103, Issue 4, pp 449–459 | Cite as

Allozyme diversity and the evolution ofCrepidiastrum (Compositae) on the Bonin (Ogasawara) Islands

  • Motomi Ito
  • Mikio Ono
Article

Abstract

The genusCrepidiastrum is distributed in East Asia and includes 7 species. In the Bonin Islands, three species ofCrepidiastrum occur, and all of them are endemic to the islands. For detecting the origin and speciation of these endemic species, electrophoretic studies have been done in three endemic species of the Bonin Islands as well as in the remaining four species ofCrepidiastrum, andYoungia denticulata which is considered to be closely related toCrepidiastrum.

A total of 386 individuals were sampled from 14 populations. As a result, 17 loci of 10 enzyme systems were resolved and gene frequencies for each population were calculated. The genetic variability was low in island species, as reported in some oceanic island plants. Four groups were recognized in the dendrogram generated by the UPGMA method. The Bonin endemics were clustered together, suggesting a monophyletic origin.C. ameristophyllum andC. linguaefolium were found to be genetically very similar, and this may suggest recent and rapid speciation within the islands.

Key words

Allozyme diversity Bonin Islands Crepidiastrum Oceanic island Youngia 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Cardy, B.J., C.W. Stuber and M.M. Goodman. 1981. Techniques for starch gel electrophoresis of enzyme from maize (Zea mays), revised. Inst. Stat. Mimeogr. Ser.1317, North Carolina State Univ.Google Scholar
  2. Carlquist, S. 1974. Island Biology, Columbia Univ. Press, New York.Google Scholar
  3. Crawford, D.J. 1983. Phylogenetic and systematic inferences from electrophoretic studies.In S.D. Tanksley and T.J. Orton, ed., Isozymes in Plant Genetics and Breeding, Part A, pp. 257–287. Elsever, New York.Google Scholar
  4. —,R. Whitkus andT.F. Stuessy. 1987. Plant evolution and speciation on oceanic islands.In K. Urbanska, ed., Differentiation Pattern in Higher Plants, pp. 183–199. Academic Press, London.Google Scholar
  5. Gottlieb, L. D. 1977. Electrophoretic evidence and plant systematics. Ann. Mo. Bot. Gard.64: 161–180.CrossRefGoogle Scholar
  6. — 1981. Electrophoretic evidence and plant populations. Prog. Phytochem.7: 1–45.Google Scholar
  7. — 1982. Conservation and duplication of isozymes in plants. Science216: 373–380.Google Scholar
  8. Helenurm, K. andF.R. Ganders. 1985. Adaptative radiation and genetic differentiation in HawaiianBidens. Evolution39: 753–765.CrossRefGoogle Scholar
  9. Kimura, M. 1983. The Neutral Theory of Molecular Evolution. Cambridge University Press, Cambridge.Google Scholar
  10. — andT. Ohta. 1971. Protein polymorphism as a phase of molecular evolution. Nature229: 467–469.PubMedCrossRefGoogle Scholar
  11. Kitamura, S. 1955. Compositae Japonicae, Pars Quarta. Mem. Coll. Sci. Univ. Kyoto, Ser. B,22: 77–126.Google Scholar
  12. Lowrey, T.K. andD.J. Crawford. 1985. Allozyme diversity and evolution inTetramolopium (Compositae: Astereae) on the Hawaiian Islands. Syst. Bot.10: 64–72.CrossRefGoogle Scholar
  13. Nei, M. 1972. Genetic distance between population. Amer. Natur.106: 283–292.CrossRefGoogle Scholar
  14. — 1987. Molecular Evolutionary Genetics. Columbia University Press, New York.Google Scholar
  15. Nishioka, T. 1956. Karyotype analysis in Japanese Cichoriae. Bot. Mag. Tokyo69: 586–592.Google Scholar
  16. Odryzykoski, I.J. andL.D. Gottlieb. 1984. Duplication of genes coding 6-phosphogluconate dehydrogenase inClarkia (Onagraceae) and their phylogenetic implications. Syst. Bot.9: 479–489.CrossRefGoogle Scholar
  17. Ono, H. andS. Nagai. 1958. The hybrid ofCrepidiastrum platyphyllum andC. keiskeanum. Jap. J. Genetics33: 12–55.Google Scholar
  18. Ono M. 1975. Chromosome numbers of some endemic species of the Bonin Islands. I. Bot. Mag. Tokyo88: 323–328.CrossRefGoogle Scholar
  19. — 1985. Speciation and distribution ofPittosporum in the Bonin Islands.In H. Hara, ed., Evolution and Diversity in Plant and Plant Communities, pp. 7–17, Academic Scientific Book, Tokyo.Google Scholar
  20. — andS. Kobayashi. 1985. Flowering plants endemic to the Bonin Islands.In M. Ono and K. Okutomi, ed., Endemic Plants Species and Vegetation of Bonin Islands, pp. 1–96, Aboc-sha, Kamakura (In Japanese).Google Scholar
  21. Porter, D.M. 1978. Endemism and evolution in Galapagos Islands vascular plant.In D. Bramwell, ed., Plants and Islands, pp. 225–258, Academic Press, London.Google Scholar
  22. Skottsberg, C. 1956. Derivation of the flora and fauna of the Juan Fernandez and Easter islands; part 1, the Juan Fernandez Islands. Nat. Hist. Juan Fernandez and Easter Islands1: 193–405.Google Scholar
  23. Sneath, P.H. andR.R. Sokal. 1973. Numerical Taxonomy. W.H. Freeman and Company, San Francisco.Google Scholar
  24. Soltis, D.E., C.H. Haufler, D.C. Darrow andG.J. Gastony. 1983. Starch gel electrophoresis of fern: a compilation of grinding buffers, gel and electrode buffers, and staining schedules. Amer. Fern J.73: 9–27.CrossRefGoogle Scholar
  25. Soltis, P.S. andD.E. Soltis. 1987. Population structure and estimates of gene flow in the homosporous fernPolystichum munitum. Evolution41: 620–629.CrossRefGoogle Scholar
  26. Witter, M.S. andG.D. Carr. 1988. Adaptative radiation and genetic differentiation in the Hawaiian silversword alliance (Compositae: Madiinae). Evolution42: 1278–1287.CrossRefGoogle Scholar
  27. Yahara, T., T. Kawahara, D.J. Crawford, M. Ito andK. Watanabe. 1989. Extensive gene duplications in diploidEupatorium (Asteraceae). Amer. J. Bot.76: 1247–1253.CrossRefGoogle Scholar

Copyright information

© The Botanical Society of Japan 1990

Authors and Affiliations

  • Motomi Ito
    • 1
  • Mikio Ono
    • 1
  1. 1.Makino HerbariumTokyo Metropolitan UniversityTokyo

Personalised recommendations