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Mechanism of sex differentiation in plants

Research Project

Project/Area Number 09306006
Research Category

Grant-in-Aid for Scientific Research (A).

Allocation TypeSingle-year Grants
Section一般
Research Field 応用微生物学・応用生物化学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

OHYAMA Kanji  Kyoto Univ., Grad. Sch. Biostudies, Professor, 生命科学研究科, 教授 (40135546)

Co-Investigator(Kenkyū-buntansha) YAMATO Katsuyuki  Kyoto Univ., Grad. Sch. Biostudies, Assistant, 生命科学研究科, 助手 (50293915)
FUKUZAWA Hideya  Kyoto Univ., Grad. Sch. Biostudies, Associate professor, 生命科学研究科, 助教授 (30183924)
Project Period (FY) 1997 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥33,300,000 (Direct Cost: ¥33,300,000)
Fiscal Year 2000: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 1999: ¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 1998: ¥8,200,000 (Direct Cost: ¥8,200,000)
Fiscal Year 1997: ¥16,400,000 (Direct Cost: ¥16,400,000)
KeywordsLiverwort / sex chromosomes / PAC libraries / EST / sex-chromosome genes / RDA / transformation / FISH / Y染色体 / PACクローン / 反復配列 / PACライブラリー / 生殖器官 / PAC
Research Abstract

We constructed PAC genomic libraries for both male and female liverwort, Marchantia polymorpha. A male-specific clone, pMM4G7, was isolated from the male genomic library by differential screening and shown to originate from the Y chromosome by FISH.The entire nucleotide sequence of pMM4G7 was determined to find Y-chromosome-specific repeated sequences and a gene coding for a protein with a RING-finger motif. Another sequenced male-specific PAC clone, pMM2D3, containd six genes which showed significant similarities to genes registered in the public databases. Four of the six genes were present only in the male genome, and RT-PCR showed that these were actually expressed. Five novel markers for the Y chromosome and two for the X chromosome were isolated by representational difference analysis (RDA). Total sizes of contigs constructed thus far are approximately 3Mb and 150kb for the Y and X chromosomes, respectively.
Separate cDNA libraries were constructed for male and female sexual organs. Approximately 1000 ESTs were obtained from each of the libraries, revealing gene expression profiles in sexual organs as well as differences in the expression profiles between male and female sexual organs.
In order to elucidate functions of novel genes encoded by the sex chromosomes by gene manipulation, we developed a transformation system for M.polymorpha applying particle bombardment. We have constructed a library of over 2000 tagged lines of M.polymorpha and isolated a mutant which was affected in the development of sexual organs.

Report

(5 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Ohyama,K. et al.: "Construction of male and female PAC genomic libraries suitable for identification of Y-chromosome-specific clones from the liverwort, Marchantia polymorpha."The Plant Journal. 24. 421-430 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Fukuzawa,H. et al.: "Direct transformation and plant regeneration of the haploid liverwort Marchantia polymorpha L."Transgenic Research. 9. 179-185 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yamato,K. et al.: "Comparison of expressed sequence tags from male and female sexual organs of Marchantia polymorpha."DNA Research. 7. 165-174 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 竹中瑞樹,大山莞爾: "植物細胞工学シリーズ14「植物のゲノム研究プロトコール:最新のゲノム情報とその利用法」、ゼニゴケの無菌培養法および形質転換法"秀潤社. 8 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Ohyama, K.et al.: "Construction of male and female PAC genomic libraries suitable for identification of Y-chromosome-specific clones fromthe liverwort, Marchantia polymorpha."Plant. J.. 24. 421-430 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Fukuzawa, H.et al.: "Direct transformation and plant regeneration of the haploid liverwort Marchantia polymorpha L."Transgenic Res.. 9. 179-185 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yamato, K.et al.: "Comparison of expressed sequence tags from male and female sexual organs of Marchantia polymorpha."DNA Res.. 7. 165-174 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Okada et al.: "Construction of male and female PAC genomic libraries suitable for identification of Y-chromosome-specific clones from the liverwort, Marchantia polymorpha."The Plant Journal. 24. 421-430 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Takenaka et al.: "Direct transformation and plant regeneration of the haploid liverwort Marchantia polymorpha L."Transgenic Research. 9. 179-185 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Nishiyama et al.: "Comparison of expressed sequence tags from male and female sexual organs of Marchantia polymorpha."DNA Research. 7. 165-174 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 竹中瑞樹,大山莞爾: "植物細胞工学シリーズ14「植物のゲノム研究プロトコール:最新のゲノム情報とその利用法」、ゼニゴケの無菌培養法および形質転換法"秀潤社. 8 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Sone et al.: "Bryophyte 5SrDNA was inserted into 45SrDNA repeat units after the divergence from higher land plants"Plant Molecular Biology. 41. 679-685 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Takanaka et al.: "Direct transformation and plant regeneration of the haploid liverwort Marchantia polymorpha L."Transgenic Research. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Nishiyama,et al.: "Two mRNA species encoding calcium-dependent protein kinases are differentially expressed in sexual organs of Marchantia polymorpha through alternative splicing." Plant and Cell Physiology. 40. 205-212 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Nagai,J.,et al.: "Expressed sequence tags from immature female sexual organ of a liverwort,Marhcantia polymorpha."" DNA Research. 6(in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Akashi et al.: "Accumulation of nuclear-encoded tRNA^<The>(AGU) in mitochondria of the liverwort Marchantia polymorpha." Biochem.Biophys.Acta. 1350. 262-266 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Kobayashi et al.: "Interorganellar gene transfer in bryophytes : the functional nad7 gene is nuclear encoded in Marchantia polymorpha." Mol.Gen.Genet.256. 589-592 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 大山莞爾: "ゼニゴケの性染色体ゲノムの解析" バイオサイエンスとインダストリー. 第55巻. 613-614 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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