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Exine pattern determination in Angio sperm.

Research Project

Project/Area Number 03804057
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 植物形態・分類学
Research Institutionkagawa university

Principal Investigator

TAKAHASHI Masamichi  Kagawa Univ Biol ASS Prof, 教育学部, 助教授 (00154865)

Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1992: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1991: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsPattern determination / Exine / Plasma newbrane / Angiosperm / Ultrastructure / Freeze fracturve / パタ-ン決定
Research Abstract

Exine development was studied using high resolution scanning electron microscopy, with attention to the initial developmental process of protectum formation and composition. The protectum is originated on the protuberant sites of the invaginated plasma membrane during the early tetrad stage. The present study shows that the initial protectum is composed of irregularly oriented fibrous threads. The fibrous threads accumulate and form a network on the plasma membrane. Globular materials gradually aggregate within the network of fibrous threads during the tetrad stage. Subsequently the fibrous threads are almost masked by the globular materials. The developing protectum has a coarse texture within the callosic tetrad envelope. At the free microspore stage the granular protectum becomes homogeneous. The present study suggests that the protectum consists of an association of fibrous threads and globular material. The fibrous threads may function as receptors and/or the skeleton of the developing exine.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Takahashi,m.: "Development of spinous exive in Nuphar japoniouw." Review of Paleobot.& Palynol.75. 317-322 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Takahashi m,: "Exive initiation and substructure in Polleu of Caesalpinia japonica" American Journal of Botany. 80. 192-197 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Takahashi,m & J.J.Skvarla: "Exive pattern formation in Bougainjillea spectabilis" Amer.J.Botany. 78. 1063-1069 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Takahashi m.& J.J.Skvarla: "Revelopment of striate exive in Jpomopsis rubura." Amer.J.Bot.78. 1724-1731 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Y.masuda(ed)Takahashi,m.(分担): "Plant cell walls as Biopolymens with physiological Functions" Yamada Sei Foundation., 452 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Takahashi,m: "Development of spinous exine in Nuphar Japonicum De Candolle(Nymphaeaceae)" Ren Palaeobot & Palynol. 75. 315-322 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Takahashi,m: "Exine initiation and sub-structure in polleu of Caesalpinia Japonica" Amer J Bot. 80. 192-197 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Takahashi m & J.J Skvavla: "Exine formation in Bougainvillea spectabilis" Amer J Bot. 78. 1063-1069

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Takahashi m & J.J Skvavla: "Development of striate exine in Ipomopsis rubura" Amer J Bot. 78. 1724-1731

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Takahashi, M.: "Revelopment of Spinous exine in Nuphar japon・cum De Candolle (Nymphaeacece)" Review of Palaecbotany & Palynology. 75. 317-322 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Takahashi, M: "Exine initiation and subseructure in pollen of Cbesalpinia japonica." American Journal of Botany. 80. 192-197 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] (Ed.)by Y.masuda Takahashi.M.(分担): "Plant Cell Walls as Bioplymers with Physiological Functions." Yamada Scieuce Foundation, 452 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Takahashi,M. & John J.Skvarla: "Exine pattern formation in Bougainvillea spectabilis" American Journal of Botany. 78. 1063-1069 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Takahashi M. & John J.Skvarla: "Development of striate exine in Ipomopsis rubura" American Journal of Botany. 78. 1724-1731 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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