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Eupyrene-apyrene dimorphic spermatogenesis in Bombyx (Lepidoptera): Significance and differentiation mechanisms.

Research Project

Project/Area Number 15380044
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied entomology
Research InstitutionRakuno Gakuen University

Principal Investigator

YAMASHIKI Naoko  Rakuno Gakuen University, Faculty of Environmental Systems, Professor, 環境システム学部, 教授 (40112578)

Co-Investigator(Kenkyū-buntansha) SAHARA Ken  Hokkaido University, Graduate School of Agriculture, Assistant, 大学院・農学研究科, 助手 (30241368)
Project Period (FY) 2003 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 2006: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2005: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2004: ¥4,500,000 (Direct Cost: ¥4,500,000)
Fiscal Year 2003: ¥3,400,000 (Direct Cost: ¥3,400,000)
KeywordsSpermatogenesis / Cell Differentiation / Lepidopteran Insect / 二型精子形成 / 鱗翅目 / 二型精子
Research Abstract

In males of silkworm Bombyx mori, two types of spermatozoa, nucleate eupyrene and anucleate apyrene, are produced in the same testes, although only the eupyrene fertilize the eggs. We focused on that the transition from eupyrene line to the apyrene line occurred in 1) what stages of silkworm development, and 2) what stages of spermatogenesis. It has revealed that 3) not only both types of sperm but the cyst cells, somatic cells that enclose the sperm bundles, follow the different way of development in the testes and the seminal vesicle. 1. The dimorphic sperm production in vitro cultivation of spermatocysts has been almost established, and what stages of silkworm development the transition from eupyrene line to the apyrene line occurred will be cleared by using the cultivation system. 2. By visualizing the chromosome behavior, microtubule dynamics, distribution of y-tubulin (one of the components in microtubule organizing center), any indications of the eupyrene-apyrene line differentiation were not found in the spermatogonia. In the primary spermatocytes, the different fate to eupyrene or apyrene first became evident by the fact that the homologous chromosomes to form the bivalents in eupyrene line and not in apyrene line. Any of molecular candidates were not identified yet in Bombyx. 3. In a layer of cyst cells, differences of histochemical characteristics and submicroscopic structures were detected between the eupyrene and apyrene bundles. After the lysis of cyst cells before they left the testis, apyrene bundles were disrupted while the eupyrene maintained the bundle form. Our findings may indicate that the cyst cells secrete a certain substance to maintain the bundle form of the eupyrene. The invidualized apyrene is considered to play important role in assisting eupyrene bundle during their passage through the male and female genital tracts

Report

(5 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (37 results)

All 2007 2006 2005 2004 2003 Other

All Journal Article (31 results) Publications (6 results)

  • [Journal Article] Detection of γ-tubulin in spermatogonial cells of Bobmyx mori (Lepidoptera) and Chortophaga viridifasciata (Orthoptera).2007

    • Author(s)
      Matsuda Y, Sahara K, Yasukochi Y, Yamashiki N
    • Journal Title

      Zool.Sci 24(in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Microtubule dynamics and distribution of γ-tubulin in male germ cells of Bombyx mori (Lepidoptera).2007

    • Author(s)
      Matsuda Y, Yamashiki N
    • Journal Title

      J Insect Biotech Seric. 76(in press)

    • NAID

      10019767148

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Expression, cellular localization, and functional role of monocarboxylate transporter 4 (MCT4) in the gastrointestinal tract of ruminants.2007

    • Author(s)
      Kirat D, Matsuda Y, Yamashiki N, Hayashi H, Kato S
    • Journal Title

      Gene 391

      Pages: 140-149

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Detection of y-tubulin in spermatogonial cells of Bobmyx mori (Lepidoptera) and Chortophaga viridifasciata (Orthoptera).2007

    • Author(s)
      Matsuda Y, Sahara K, Yasukochi Y, Yamashiki N.
    • Journal Title

      Zool. Sci. 24.(in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Microtubule dynamics and distribution of γ-tubulin in male germ cells of Bombyx mori(Lepidoptera).2007

    • Author(s)
      Matsuda Y, Yamashiki N.
    • Journal Title

      J Insect Biotech Seric. 76.(in press)

    • NAID

      10019767148

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Expression, cellular localization, and functional role of monocarboxylate transporter 4 (MCT4) in the gastrointestinal tract of ruminants.2007

    • Author(s)
      Kirat D, Matsuda Y, Yamashiki N, Hayashi H, Kato S.
    • Journal Title

      Gene 391

      Pages: 140-149

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Distribution of γ-tubulin in male germ cells of Bombyx mori (Lepidoptera).2007

    • Author(s)
      Matsuda Y, Yamashiki N
    • Journal Title

      Zoological Science 24(in press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Expression, cellular localization, and functional role of monocarboxylate tranporter 4(MCT4) in the gastrointestinal tract of ruminants.2007

    • Author(s)
      Kirat D, Matsuda Y, Yamashiki N, Hayashi H, Kato S.
    • Journal Title

      Gene 391

      Pages: 140-149

    • Related Report
      2006 Annual Research Report
  • [Journal Article] FISH analysis of the W chromosome in Bombyx mandarina and several other species of Lepidoptera by means of B. mori W-BAC probes.2007

    • Author(s)
      Yoshido A, Yasukochi Y, Marec F, Abe H, Sahara K
    • Journal Title

      J Insect Biotech Seric 76(1)(in press)

    • NAID

      10018742816

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Apyrene sperm from the triploid donors restore fecundity of cryopreserved semen in Bombyx mori.2006

    • Author(s)
      Takemura Y, Sahara K, Mochida Y, Ohnuma A
    • Journal Title

      J. Insect Physiol. 52

      Pages: 1021-1026

    • NAID

      120000962665

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Apyrene sperm from the triploid donors restore fecundity of cryopreserved semen in Bombyx mori.2006

    • Author(s)
      Takemura Y, Sahara K, Mochida Y, OhnumaA
    • Journal Title

      J. Insect Physiol. 52

      Pages: 1021-1026

    • NAID

      120000962665

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The W chromosome detection in several lepidopteran species by genomic in situ hybridization (GISH).2006

    • Author(s)
      Yoshido A, Yamada Y, Sahara K
    • Journal Title

      J Insect Biotech Seric 75(3)

      Pages: 147-151

    • NAID

      10020516441

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Apyrene sperm from the triploid donors restore fecundity of cryopreserved semen in Bombyx mori.2006

    • Author(s)
      Takemura Y, Sahara K, Mochida Y, Ohnuma A
    • Journal Title

      J Insect Physiol 52(10)

      Pages: 1021-1026

    • NAID

      120000962665

    • Related Report
      2006 Annual Research Report
  • [Journal Article] A second generation integrated map of the silkworm reveals synteny and conserved gene order between lepidopteran insects.2006

    • Author(s)
      Yasukochi Y, Ashakuramary LA, Baba K, Yoshido A, Sahara K
    • Journal Title

      Genetics 173

      Pages: 1319-1328

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Molecular cloning and chromosomal localization of the Bombyx Sex-lethal gene.2006

    • Author(s)
      Niimi T, Sahara K, Oshima H, Yasukochi Y, Ikeo K, Traut W
    • Journal Title

      Genome 49,

      Pages: 263-268

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Phylogeny of the sex determining gene Sex-lethal in insects.2006

    • Author(s)
      Traut W, Niimi T, Ikeo K, Sahara K
    • Journal Title

      Genome 49

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Isoform-specific expression and induction of UDP-glucuronosyltransferase in immunoactivated peritoneal macrophages of the rat2005

    • Author(s)
      Tochigi, Yamashiki, Ohgiya, Ganaha, Yokota
    • Journal Title

      Drug Metabolism and Disposition 33

      Pages: 1391-1398

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Marked decrease of ribosomal RNA infected with BmN cells with AcMNPV.2005

    • Author(s)
      Fujita R, Asano S, Sahara K, Bando H
    • Journal Title

      J Insect Biotech Seric, 74(3)

      Pages: 125-128

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Resolution of sex chromosome constitution by genomic in situ hybridization and fluorescence in situ hybridization with (TTAGG)n telomeric probe in some species of Lepidoptera.2005

    • Author(s)
      Yoshido A, Marec F, Sahara K
    • Journal Title

      Chromosma 114(3)

      Pages: 193-202

    • NAID

      120000956785

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Partial deletions of the W chromosome due to reciprocal translocation in the silkworm Bombyx mori.2005

    • Author(s)
      Abe H, et al.
    • Journal Title

      Insect Mol.Biol. 14(4)

      Pages: 339-352

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Enhancement of cauliflower mosaic virus 35S promoter it insect cells infected with baculovirus.2005

    • Author(s)
      Abe T, et al.
    • Journal Title

      Virus Res. 112

      Pages: 38-41

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The Bombyx mori karyotype and the assignment of linkage groups.2005

    • Author(s)
      Yoshido A, Bando H, Yasukochi Y, Sahara K
    • Journal Title

      Genetics 170

      Pages: 675-685

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Inbreeding depression onfemale fecundity by genetic factors retained in small population of amale-haploid social mite.2005

    • Author(s)
      Mori K, Saito Y, Sakagami T, Sahara K
    • Journal Title

      Exp.Appl.Acarol. 36,

      Pages: 15-23

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The Bombyx mori karyotype and the assignment of linkage groups.2005

    • Author(s)
      Yoshido A., Bando H., Yasukochi Y., Sahara K.
    • Journal Title

      Genetics (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Inbreeding depression on female fecundity by genetic factors retained in small population of a male-haploid social mite.2005

    • Author(s)
      Mori K., Saito Y., Sakagami T., Sahara K.
    • Journal Title

      Exp.Appl.Acarol. (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Roles of actin networks in peristaltic squeezing of sperm bundles in Bombyx mori2004

    • Author(s)
      Sakara K, Kawamura N
    • Journal Title

      J Morphol. 259(1)

      Pages: 1-6

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Roles of actin networks inperistaltic squeezing of sperm bundles in Bombyx mori.2004

    • Author(s)
      Sahara K, Kawamura N
    • Journal Title

      J. Morphol. 259

      Pages: 1-6

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Organization of the Hox gene cluster of the silkworm, Bombyx mori : a split of the Hox cluster in a non-Drosophila insect.2004

    • Author(s)
      Yasukochi Y.et al.
    • Journal Title

      Dev.Genes Evol 214・12

      Pages: 606-614

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Use of RNAi technology to confer enhanced resistance to BmNPV on transgenic silkworms.2004

    • Author(s)
      Isobe R.et al.
    • Journal Title

      Arch.Virol. 149・10

      Pages: 1931-1940

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Application of artificial insemination technique to eupyrene and/or apyrene sperm in Bombyx mori.2003

    • Author(s)
      Sahara K, Takemura Y
    • Journal Title

      J Exp Zool Part A Comp Exp Biol. 297(2)

      Pages: 196-200

    • NAID

      120000963776

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Application of artificial insemination technique to separated eupyrene and apyrene sperm in Bombyx mori.2003

    • Author(s)
      Sahara K, Takemura Y
    • Journal Title

      J. Exp. Zool. 297A(2)

      Pages: 196-200

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Publications] Sahara K, Kawamura N: "Roles of actin networks in peristaltic squeezing of sperm bundles in Bombyx mori."Journal of Morphology. 259・1. 1-6 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Sahara K., et al.: "W-derived BAC probes as a new tool for identification of the W chromosome and its aberrations in Bombyx mori."Chromosoma. 112・1. 48-55 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Sahara K, Takemura Y: "Application of artificial insemination technique to separated eupyrene and apyrene sperm in Bombyx mori."Journal of Experimental Zoology. 297A・2. 196-200 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Matsuyama T., et al.: "Function analysis of an immediate early gene, iel, of Bombyx mori nucleopolyhedrovirus in mammalian cells."J.Insect Biotech.Seric.. 72・2. 87-94 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Sahara K., et al.: "Moth sex chromatin probed by comparative genomic hybridization (CGH)."Genome. 46・2. 339-342 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kawamura N., et al.: "Glucose and ecdysteroid increase apyrene sperm production in vitro cultivation of spermatocysts of Bombyx mori."Journal of Insect Physiology. 49・1. 25-30 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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