Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
권호 표지
DOI QR코드

DOI QR Code

Genetic and morphological divergence of Euphorbia esula and E. maackii in Korea (Euphorbiaceae)

한국산 흰대극(Euphorbia esula)과 섬흰대극(E. maackii)의 유전적, 형태적 분화

  • Received : 2012.11.07
  • Accepted : 2012.12.03
  • Published : 2012.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

To understand morphological and genetic differentiation between Euphorbia esula and E. maackii we examined 12 morphological characters and 11 isozyme loci from 14 populations of two species. Species of E. esula complex (A = 1.63, P = 44.83, $H_e$ = 0.198) in Korea maintain nearly as high as the genetic diversity reported in East Asian E. jolkinii and E. fauriei while lower than those of E. ebracteolata and E. pekinensis in Korea. Although the ranges of most morphological character variation of the two species overlap, E. esula and E. maackii were well recognized by the combination of the morphological traits, and the result of UPGMA phenogram supports the two distinct species inhibited in Korea. However, isozyme data do not support the recognition of E. esula and E. maackii. The discordance between morphological and allozyme data should be explained by the recent divergence or gene flow via introgressive hybridization between two species.

흰대극과 섬흰대극의 형태적, 유전적 분화를 알아보기 위해 두 종의 14개 자연 집단으로부터 12개의 형태형질과 11개의 동위효소 유전좌위를 조사하였다. 흰대극복합체의 유전적 다양성 측정치(A=1.63, P=44.83, $H_e$=0.198)는 기존의 동북아산 암대극과 두메대극의 보고와 유사하며, 한국산 붉은대극과 대극보다는 약간 낮은 수치를 보여주고 있다. 비록 대부분 두 종사이의 형태형질의 측정범위가 중복되나 흰대극과 섬흰대극은 형태형질의 조합에 의해 구별되며, 이를 기초로 한 전형질도는 한국에 두 종이 분포함을 지지해주고 있다. 하지만 동위효소 자료를 이용한 분석에서는 두 종이 구별되지 않았으며, 이와 같은 두 자료의 불일치는 두 종이 최근에 분화 하였거나 종간 형질이입에 의한 교잡에 의해 이와 같은 결과가 나온 것으로 추측된다.

Keywords

References

  1. Cosner, M. B. and D. J. Crawford. 1990. Allozyme variation in Coreopsis sect. Coreopsis (Compositae). Systematic Botany 15: 256-265. https://doi.org/10.2307/2419181
  2. Croizat, L. 1941. Comments on Far eastern Euphorbia. Japanese Journal of Botany 17: 573-578.
  3. Croizat, L. 1945. "Euphorbia Esula" in North America. The American Midland Naturalist 33: 231-243. https://doi.org/10.2307/2421329
  4. Crompton, C. W., Stahevitch, A. E. and W. A. Wojtas. 1989. Morphometric studies of the Euphorbia esula group (Euphorbiaceae) in North America. Canadian Journal of Botany 68: 1978-1988.
  5. Frajman, B. and P. Schönswetter. 2011. Giants and dwarfs: molecular phylogenies reveal multiple origins of annual spurges within Euphorbia subg. Esula. Molecular Phylogenetics and Evolution. 61: 413-424. https://doi.org/10.1016/j.ympev.2011.06.011
  6. Gottlieb, L. D. 1981. Electrophoretic evidence and plant populations. In Progress in Phytochemistry, vol. 7. Reinhold, L. et al. (eds.), Pergamon Press, New York. Pp. 1-46.
  7. Hurusawa, I. 1940. Species generis Euphorbiae Imperi Japonic (IIV). Journal of Japanese Botany 16: 330-461.
  8. Ma, J. S. and C. Y. Wu. 1992. A synopsis of chinese euphorbia L. s. l. (Euphorbiaceae). Collectane Botanica (Barcelona) 21: 98- 181.
  9. Nakai, T. 1919. Flora Koreana, pars secunda 31: 183-186.
  10. Nei, I. 1972. Genetic distance between populations. American Naturalist 106: 283-292. https://doi.org/10.1086/282771
  11. Park, K.-R. 2004. Comparisons of allozyme variation of narrow endemic and widespread species of Far East Euphorbia (Euphorbiaceae). Botanical Bulletin of Academia Sinica 45: 221-228.
  12. Park, K.-R. and S. Lee. 1988. A palynotaxonomic study of the Korean Euphobiaceae. Korean Journal of Plant Taxonomy 18: 69-94.
  13. Park, K.-R. and W. J. Elisens. 1997. Isozyme and morphological divergence within Euphorbia section Tithymalopsis (Euphorbiaceae). International Journal of Plant Sciences 158: 465-475. https://doi.org/10.1086/297457
  14. Rohlf, F. J. 1992. NTSYS-pc: numerical taxonomy and multivariate analysis system (version 1.70). Exeter Software, New York.
  15. Smith, J. F. and T. V. Pham. 1996. Genetic diversity of the narrow endemic Allium aaseae (Alliaceae). American Journal of Botany 83: 717-726. https://doi.org/10.2307/2445848
  16. Soltis, D. E. 1982. Allozyme variability in Sullivantia (Saxifragaceae). Systematic Botany 7: 26-34. https://doi.org/10.2307/2418650
  17. Soltis, D. E., C. H. Haufler, D. C. Darrow and G. J. Gastony. 1983. Starch gel electrophoresis of ferns: a compilation of grinding buffers, gel and electrode buffers, and staining schedules. American Fern Journal 73: 10-27.
  18. Swofford, D. L. and R. B. Selander. 1981. BIOSYS-1: a FORTRAN program for the comprehensive analysis of electrophoretic data in population genetic and systematics. Journal of Heredity 72: 281-283.
  19. Webster, G. L. 1994. Synopsis of the genera and suprageneric taxa of Euphorbiaceae. Annals of Missouri Botanical Garden 81: 33-144. https://doi.org/10.2307/2399909

Cited by

  1. Genetic variation and differentiation among populations of Euphorbia ebracteolata (Euphorbiaceae) in Korea vol.45, pp.1, 2015, https://doi.org/10.11110/kjpt.2015.45.1.1