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Study on evolution of the silkworm and its application to biotechnology

Research Project

Project/Area Number 62440012
Research Category

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

Allocation TypeSingle-year Grants
Research Field 蚕糸学
Research InstitutionThe University of Tokyo

Principal Investigator

WATANABE Hitoshi  Univ. Tokyo, Fac. Agr., Professor, 農学部, 教授 (10011868)

Co-Investigator(Kenkyū-buntansha) NAGATA Masao  Univ. Tokyo, Fac. Agr., Assistant Professor, 農学部, 助手 (70107407)
KOBAYASHI Masahiko  Univ. Tokyo, Fac. Agr., Associate Professor, 農学部, 助教授 (60162020)
吉武 成美  東京大学, 農学部, 教授 (30011810)
Project Period (FY) 1987 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥27,200,000 (Direct Cost: ¥27,200,000)
Fiscal Year 1989: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1988: ¥8,100,000 (Direct Cost: ¥8,100,000)
Fiscal Year 1987: ¥17,000,000 (Direct Cost: ¥17,000,000)
KeywordsSilkworm / Evolution / Bombyx mori / モザイク遺伝子
Research Abstract

1. A fragmentary chromosome of the silkworm was detected in P^<sm> strain by pulse-field-gradient-electrophoresis, and 2 DNA bands on the gel were specific to DNA in the nuclei.
2. Nucleolus organizers in the wild silkworm, Bozbyx mandarins and the domesticated silkworm, B. mori were compared and evolution of the silkworm was discussed based on their differences.
3. Action of mosaic gene on the fertilization in MO-strain of the silkworm was examined and several modified models to explain the abnormal fertilization was proposed.
4. Nonsusceptibilities of the silkworm strains to two densonucleosis viruses were controlled by two independent genes.
5. Mosaic infection with a densonucleosis virus was observed in the midgut epithelium of the mosaic silkworm which was produced by no gene.
6. Arylphorins from Bosbyx mori and Samia cynthia ricini resembled each other in the serological and chemical nature but their dynamics during the development was different.
7. In vitro translation of RNA from the midgut infected with Boabyx mori densonucleosis virus type-2 was examined and peptides of virus particles were detected.
8. Nonoccluded viruses of the mulberry pyralid were serologically indistinguishable from densonucleosis viruses and fracherie virus of the silkworm and the pyralid was supposed to be a common habitual host of these viruses.
9. When ovaries from the silkworms at the early larval stages were cultured in vitro, the hormones from the brain were necessary to cell division and development of the oocytes.
10. Bovine fetal serum affected the susceptibility of a Boabyx cell line to a nuclear polyhedrosis virus.
11. Vitellogenic development of the ovary of the silkworm, Bowbyx mori was regulated by ecdysteroids.

Report

(4 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • 1987 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] Shimada,T.: "Characterization of arylphorin of the Eri-silkmoth,Samia cynthia ricini(Donovan)(Lepidoptera:Saturniidae)" Appl.Ent.Zool.22. 543-552 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Maekawa,H.: "Nucleolus organizers in the wild silkworm Bombyx mandarina and the domesticated silk moth B.mori." Chromosoma(Berl). 96. 263-269 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Ebinuma,H.: "The detection of mosaics and polyploids in a hereditary mosaic strain of the silkworm,Bombyx mori,using egg colour mutants" Genet.Res.,Camb.51. 223-229 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Watanabe,H.: "Mulberry pyralid,Glyphodes pyloalis: Habitual host of nonoccluded viruses pathogenic to the silkworm,Bombyx mori" J.Inverteb.Pathol.52. 401-408 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Abe,H.: "Mosaic infection with a densonucleosis virus in the midgut epithelium of the silkworm,Bombyx mori" J.Inverteb.Pathol.55. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Watanabe,H.: "The effect of protein content of an artificial diet on protease and antiviral activities of the gut juice of the silkwrom,Bombyx mori" Appl.Ent.Zool.25. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 吉竹成美: "家蚕の起源と分化に関する研究序説" 東京大学農学部養蚕学研究室, 125 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Shimada, T.: "Characterization of arylphorin of the Eri-silkmoth, Samiacynthia ricini (Donovan)(Lepidoptera:Saturniidae)" Appl. Ent. Zool.22. 543-552 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Maekawa, H.: "Nucleolus organizers in the wild silkworm Bombyx mandarina and the domesticated silk moth B. mori." Chromosoma (Berl.), 96, 263-269, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Ebinuma, H.: "The detection of mosaics and polyploids in a hereditary mosaic strain of the silkworm, Bombyx mori, using egg color mutants" Genet. Res., Camb., 51, 223-229, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Watanabe, H.: "Mulberry pyralid, Glyphodes pyloalis: Habitual host of nonoccluded viruses pathogenic to the silkworm, Bombyx mori" J. Inverteb. Pathol. 52, 401-408, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Abe, H.: "Mosaic infection with a densonucleosis virus in the midgutepithelium of the silkworm, Bombyx mori" J. Inverteb. Pathol., 55, 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Watanabe, H.: "The effect of protein content of an artificial diet on protease and antiviral activities of the gut juice of the silkworm, Bombyx mori" Appl. Ent. Zool., 25, 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yoshitake, M.: "Origin and Differentiation of the silkworm, Bombyx mori" Lab. Sericul Sci., Fac. of Agricul. Univ. of Tokyo, pp125, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Abe,H.: "Mosaic infection with a densonucleosis virus in the midgut epithelium of the silk worm,Bombyx mori" J.Inverteb.Pathol.55. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Watanabe,H.: "The effect of protein content of an artificial diet on protease and antiviral activities of the gut juice of the silkworm" Appl.Ent.Zool.25. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Ebinuma,Hiroyasu: Genet.Res.Camb.51. 223-229 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Watanabe,Hitoshi: J.Inverteb.Phathol.52. 401-408 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Maekawa,Hideki: Chronosomoi. 96. 263-269 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Shimada, Toru: Applied Entomology and Zoology. 22. 543-552 (1987)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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