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Cellular and Molecular Breeding of Sesame.

Research Project

Project/Area Number 09660003
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Breeding science
Research InstitutionToyama University

Principal Investigator

YAMADA Kyoji  Fac.of Sci., Toyama Univ., Professor, 理学部, 教授 (70200714)

Co-Investigator(Kenkyū-buntansha) WAKASUGI Tatsuya  Fac.of Sci., Toyama Univ., Associate Professor, 理学部, 助教授 (10212317)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1998: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1997: ¥2,300,000 (Direct Cost: ¥2,300,000)
KeywordsSesame / Oilseed crop / Molecular breeding / Unsaturated fatty acid / Fatty acid desaturase / transgenic plant / Agrobacterium / 形質転換 / 油糧作物 / 脂肪酸不飽和化酵素 / 遺伝子導入 / 形質転換植物 / 毛状根
Research Abstract

(i) We isolated full-length cDNA clones coding for two fatty acid desaturases from sesame, Sesamum indicum : a microsomal omega-6 desaturase which is required for conversion of oleic to linoleic acids and a plastid-localiz- ed omega-3 desaturase which is required for conversion of linoleic to linolenic acids. Sequence analysis indicated that the former cDNA clone included an open reading frame (ORF) of 383 amino acids, while the latter clone that of 447 amino acids. We also cloned a cDNA which encodes about one-third of a plasatid-localized omega-6 fatty acid desaturase.
(ii) Northern blot analyses showed changes in the transcription level of the above three fatty acid desaturases at various developmental stages and among different organs in sesame. A gene for an microsomal omega-6 desaturase was found to be transcribed at high level specifically in seeds at their immature stages, whereas the transcripts of plastid-localized type of both omega-6 and omega-3 desaturases were almost undetectable in various organs at all developmental stages.
(iii) We have succeeded in cloning a genomic DNA of an microsomal omega-6 fatty acid desaturase of sesame, determined its nucleotide sequences, and then found that a 1.6 kbp intron was located at only 25 bp before the initiation codon of the coding region. At least 14 cis-regulatory elements, such as E-box, which are specific sequence motifs known to be effective for high expression of specific genes during seed development, were detected within the intron.
(iv) We tried to transform sesame plants by infection of Agrobacterium. when infected with A.tumefaciens containing the MAT vector (pMAT21), seedlings of a wild species, Sesamum schinzianum frequently produced crown galls. Incubation of the calli derived from the goals resulted in regenera- tion of plantlets at high frequency. Confirmation of transformation in such regenerated plants is now in progress.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] Ahn, Byung Ohg: "Culture conditions of hairy roots induced by Agrobacterium rhizogenes in wild sesame." Korean J.Breed.29(2). 147-153 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Asamizu, Tetsuya: "Isolation and charecterization of Agrobacterium spp.from Toyama Prefeeture(IV)." Ann.Rep.Toyama Pref.Inst.Pharm.Res.24. 39-47 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 山田恭司: "遺伝子工学を利用したゴマ育種-研究の現状と課題-" 食の科学. 234. 74-81 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Wakasugi, Tatsuya: "Complete nucleotide sequence of the chloroplast genome from the green alga・・・・・" Proc.Natl.Acad.Sci.USA. 94. 5967-5972 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mitsui, Shinichi: "Localization of a cytokin in-bindiry protein CBP57/S-adenosyl-homo-cysteine・・・・" J.Plant Physiol.150. 752-754 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kapoor, M.: "Organization of chloroplast ribosomal RNA genes and in vitro self-splicing・・・・" Curr.Genet.31. 503-510 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 山田恭司: "ゴマ-その科学と機能性-" 並木満夫編, 丸善プラネット, 268 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ahn, Byung Ohg et al.: "Culture condition of hairy roots induced by Agrobacterium rhizoegenes in wild sesame." Korean J.Breed.29. 147-153 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Asamizu, T.et al.: "Isolation and charaterization of Agrobacterium spp. from Toyama Prefecture IV." Ann.Rep.Toyama Pref.Int.Pharm.Res.24. 39-47 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yamada, K.: "An attempt at genetically engineered sesame. (in Japanese)" Shoku no Kagaku. 234. 74-81 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Wakasugi, T.et al.: "Complete nucleotide sequence of the chloroplast genome from the green alga Chlorella vurgaris : The existence of genes possibly involved in chloroplast division." Proc.Natl.Acad.Sci.USA. 94. 5967-5972 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mitsui, S.et al.: "Localization of a cytokinin-binding protein CBP57/S-adenosyl-L-homocysteine hydrolase in a tobacco root." J.Plant Physiol.150. 752-754 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kapoor, M.et al.: "Organization of chloroplast ribosomal RNA genes and in vitro self-splicing activity of the large subunit rRNA intron from the green alga Chlorella vulgaris C-27" Curr.Genet.31. 503-510 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ishikawa, J.et al.: "Structural analysis of the 5'-flanking regions of fatty acid desaturase genes that are specifically expressed in sesame seeds." Breed.Sci.48 (suppl.1). 60 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ishikawa, J.et al.: "Isolation and expression of cDNAs encoding microsomal and chloroplast-localized omega-6 desaturases in sesame." Breed.Sci.48 (suppl.2). 58 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yamada, K.: "An approach to genetically modified sesame. (in Japanese)" In : Goma-sono Kagaku to Kinousei-. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 石川 準一: "ゴマの小胞体型および色素体型ω-6脂肪酸デサチュラーゼ遺伝子の構造と発現" 育種学雑誌. 48・別1. 60 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 石川 準一: "ゴマ種子で特異的に発現する脂肪酸デサチュラーゼ遺伝子の5'上流領域の解析" 育種学雑誌. 48・別2. 58 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 山田 恭司: "ゴマ-その科学と機能性-" 並木満夫 編, 丸善プラネット, 268 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ahm, Byung Ohg: "Culture Condition of hairy roots induced by Agrobacterium rhizogenes in wild secame." Korean J. Bread.29(2). 147-153 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Asazumi, Tetsuya: "Isolation and characterization of Agrobacterium spp.from Toyama Prefecture (IV)" Ann. Rep. Toyama Pref.Inst Pharm. Res.24. 39-47 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 山田恭司: "遺伝子工学を利用したゴマ育種-研究の現状と課題" 食の科学. 233. 74-81 (1997)

    • Related Report
      1997 Annual Research Report

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

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