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A study of evolution of plants in South Pacific islands

Research Project

Project/Area Number 11691185
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field 系統・分類
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

TOBE Hiroshi  Graduate School of Science, Kyoto University Professor, 大学院・理学研究科, 教授 (60089604)

Co-Investigator(Kenkyū-buntansha) MURAKAMI Noriaki  Graduate School of Science, Kyoto University Associate Professor, 大学院・理学研究科, 助教授 (60192770)
SETOGUCHI Hiroaki  Faculty of Integrated Human Studies, Kyoto University Associate Professor, 総合人間学部, 助教授 (70206647)
OGINUMA Kazuo  Faculty of Human Life & Environmental Science, Kochi Women's University Professor, 生活科学部, 教授 (30106794)
TOKUOKA Tom  Faculty of Integrated Human Studies, Kyoto University Assistant Professor, 総合人間学部, 助手 (90303792)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥9,000,000 (Direct Cost: ¥9,000,000)
Fiscal Year 2001: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2000: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1999: ¥3,300,000 (Direct Cost: ¥3,300,000)
KeywordsSouth Parific / Island biology / Plant evolution / Renroductive mechanism / Chromosome / Floral scent / Mangroves / 系統 / ニューカレドニア / New Caledonia / Pacific islands / Phologeny / Plant Evolution
Research Abstract

The purpose of the present study is to contribute to better understanding of evolution and reproductive mechanisms of plant species growing in South Pacific islands. Our output is as follows.
1. We presented the first embryological study of Amborella trichopoda representing the first branch of angiosperm evolution, which is an endemic species in New Caledonia. Compared to already known information on Nymphaeales and Illiciales which represent branches next to Amborella, symplesiomorphies of embryological characters were clarified. (Tobe et al. 2000).
2. We presented the first karyotype analysis in Amborella trichopoda. It has 2n=26 with x=13. Based on analyses, we discussed that the chromosome number of Amborella is likely to have been derived from x=14 and that a primitive chromosome number of angiosperms is likely to be x=7. (Oginuma et al. 2000).
3. A review of embryological studies on Laurales which are distributed worldwide in tropics of Old and New World including South Pacific isla … More nds was presented on the basis of a literature survey. In addition, in the light of molecular trees available for the Laurales, we tried to discuss an evolution of embryological characters, and simultaneously clarified what plant groups and what embryological characters need investigations. (Kimoto and Tobe 2001).
4. An overall phylogenetic study of Casuarinaceae that are distributed in South Pacific islands (and Australia) was conducted for the first time using chloroplast DNA sequences of rbcL and matK. Results showed relationships like (Gynmostoma (Ceuthostoma (Allocasuarina Casuarina))). (Sogo et al. 2001).
5. We analyzed floral scent in 8 species of 8 genera growing hi mangrove of Iriomote islands, Japan for the first time. We found 61 chemical compounds and discussed relationships with polinators. (Azuma et al. 2002).
6. Fourteen species of Begonia from Taiwan were analyzed with respect to karyotypes of their somatic chromosomes for the first time. Based on results, we discussed their evolution, and clarified that 5 new species exist in Taiwan. (Oginuma and Peng 2002). Less

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] Tobe, H.: "Embryology of Amborella (Amborellaceae) : descriptions and polarity of character states"Journal of Plant Research. 113. 271-280 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Oginuma, K.: "The karyotype analysis of somatic chromosomes in Amborella trichopoda (Amborellaceae)"Journal of Plant Research. 113. 281-283 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kimoto, Y.: "Embryology of Laurales : a review and perspectives"Journal of Plant Research. 114. 247-267 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Sogo, A.: "Mplecular phylogeny of Casuarinaceae based on rbcL and matK gene sequences"Journal of Plant Research. 114. 459-464 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Azuma, H.: "Floral scent chemistry of mangrove plants"Journal of Plant Research. 115. 47-53 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Oginuma, K.: "Karyomorphology of Taiwanese Begonia (Begoniaceae) : taxonomic implications"Journal of Plant Research. 115. 225-235 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Tobe, H.: "Embryology of Amborella (Amborellaceae): descriptions and polarity of character states"Journal of Plant Research. 113. 271-280 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Oginuma, K.: "The karyotype analysis of somatic chromosomes in Amborelia trichopoda (Amborellaceae)"Journal of Plant Research. 113. 281-283 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kimoto, Y.: "Embryology of Laurales: a review and perspectives"Journal of Plant Research. 114. 247-267 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Sogo, A.: "Mplecular phytogeny of Casuarinaceae based on rbcL and matK gene sequences"Journal of Plant Research. 114. 459-464 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Azuma, H.: "Floral scent chemistry of mangrove plants"Journal of Plant Research. 115. 47-53 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Oginuma, K: "Karyomorphology of Taiwanese Begonia (Begoniaceae): taxoncimic implications"Journal of Plant Research. 115. 225-235 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kimoto, Y., H.Tobe: "Embryology of Laurales : a review and perspectives"Journal of Plant Research. 114. 247-267 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Sogo, A., H.Setoguchi, et al., H.Tobe: "Molecular phylogeny of Casuarinaceae based on rbcL and matK gene sequences"Journal of Plant Research. 114. 459-464 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Azuma, H.et al., H.Tobe: "Floral scent chemistry of mangrove plants"Journal of Plant Research. 115. 47-53 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Oginuma, K., C.-I Peng: "Karyomorphology of Taiwan Begonia (Begoniaceae): taxonomic implications"Journal of Plant Research. 115. (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Tobe,H.,Jaffre,T.,: "Embryology of Amborella (Amborellaceae): descriptions and polarity of character states."Journal of Plant Research. 113. 271-280 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Tobe,H.and B.Sampson: "Embryology of Takhtajania (Winteraceae) and a summary statement of embryological features for the family"Annales of the Missouri Botanical Garden. 87. 389-397 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Oginuma,K.,Jaffre,T.,Tobe,H.: "The karyotype analysis of somatic chromosomes in Amborela trichopoda (Amborellaceae)"Journal of Plant Research . 113. 281-283 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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