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1987 Fiscal Year Final Research Report Summary

Genetical rule to the intial construction of multice lular system in Bombyx mori.

Research Project

Project/Area Number 60480048
Research Category

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

Allocation TypeSingle-year Grants
Research Field 蚕糸学
Research InstitutionUniversity of Tokyo

Principal Investigator

KOBAYASHI MASAHIKO  Unversity of Tokyo, 農学部, 助手 (60162020)

Co-Investigator(Kenkyū-buntansha) NAGATA MASAO  Unversity of Tokyo, 農学部, 助手 (70107407)
WATANABE HITOSHI  Unversity of Tokyo, 農学部, 助教授 (10011868)
YOSHITAKE NARUMI  Unversity of Tokyo, 農学部, 教授 (30011810)
Project Period (FY) 1985 – 1987
KeywordsMOSAIC / DEVELOPMENT / HOMETICGENE / 多核発生
Research Abstract

Rules of genes on the process of initial construction of multicellular system were analyzed with using mosaics which were made using hereditary mosaic genes.
The concordance of the observed rations of polyploidy mosaic eggs with the expected value suggested that the formation of mosaics occurs independently of the formation of polyploids in the fertilyzation process of hereditary mosaic strain.
Deformed segmentation due to asymmetric integmental fusion during dorsal closure, was observedin the mosaics of homeotic genes, E^<NK> and +^E. The sides of segments containing E^<NK> genes frequently fused with anteior parts of the wild-type side, in the region from the metathorax to the forth abdominal segment. while on the sixth through eighth abdominal segments they fused with the posterior parts of the opposite sides. The cause of asymmetric fusion and expression of thehomeotic genes in segmental differenciation were discussed in terms of a quantitative analysis of the relationship between mosaic patterns and asymmetric patterns of fusion.
Inter- and intra-species transplantation of male generative cells in 5th instar larvae was successed and intra-specificaly transplanted cells of the silkworm fertilized in reratively high frequence. A mew hereditary mosaic strain which expressed spontaneously mosaicism and lethality in the late stage of embryo was found and established. The mosaicism and lethality of the strain was ruled by one resessive gene, named mo-l.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] T. SHIMADA;H. EBINUMA;M. KOBAYASHI: J. Experimeuteal Zoology. 240. 335-342 (1985)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 嶋田透, 小林正彦, 吉田成美: 日本蚕糸学雑誌. 54. 464-469 (1985)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 河口豊, 伴野豊, 嶋田透, 小林正彦: 日本蚕糸学雑誌. 55. 243-245 (1986)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小林淳, 海老沼宏安, 小林正彦: 日本蚕糸学雑誌. 55. 343-348 (1986)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. EBINUMA;M. KOBAYASHI: Geuet. Res. Cawb.(1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T,SIMADA., M,KOBAYASHI & N,YOSHITAKE: "Genetical analysis of storage proteins in the silkworm, Bombyx mori." J. Seric. Sci. Jpn. 54. 464-469 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y,KAWAGUCHI, Y,BANNO, T,SIMADA & M,KOBAYASHI: "Lincage studies on the strage protein-2 gene (Pst) in Bombyx mmori." J. Seric. Sci. Jpn. 55. 243-245 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T,SIMADA, H,EBINUMA & M,KOBAYASHI: "Expression of homeotic genesin Bombyx mori, estimated from asymmetry of dosal closure in mutant/normal mosaics." J. Experimental Zoology. 240. 335-342 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J,KOBAYASHI, H,EBINUMA & M,KOBAYASHI: "Effect of temperature on the diapause egg production in the tropical race of the silkworm, Bombyx mori." J. Seric. Sci. Jpn. 55. 343-348 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H,EBINUMA & M,KOBAYASHI: "The determination of mmosaics and polyploids in a heridetary mosaic strain of the silk moth, Bombyx mori." Genetical Resesach Cam.(1988)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1989-03-30  

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