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1994 Fiscal Year Final Research Report Summary

Development of new classes of flower inducing compounds and their mechanism of action.

Research Project

Project/Area Number 05453166
Research Category

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

Allocation TypeSingle-year Grants
Research Field Bioproduction chemistry/Bioorganic chemistry
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

IWAMURA Hajime  Kyoto Univ., Dept.Agric.Chem., Professor, 農学部, 教授 (30026570)

Co-Investigator(Kenkyū-buntansha) MIYOSHI Hideto  Kyoto Univ., Dept.Agric.Chem., Assist.Prof., 農学部, 助教授 (20190829)
Project Period (FY) 1993 – 1994
KeywordsFlower induction / Asparagus / Morning glory / Cytochrome P-450 / Carbamates / Aminooximes / Polyamines
Research Abstract

We have developed a novel calss of carbamate compounds that induce flowering in one-month-old Asparagus seedlings, and suggested that the site of action of the flower inducing comounds may be cytochrome P-450. On the other hand, we have found that putrescine induces flowering in morning glory (Pharbitis nil var.Kidachi) seedlings. In this study, we developed new classes of flower inducing compounds both in asparagus and morning glory, and explored their mechanism of action.
1.Studies on Asparagus.
(1) In order to exmine the interaction with cytochrome P-450, we developed a class of carbamate compounds that have a methylenedioxy function, and also developed aminooxime compounds as structurally different class of flower inducing compounds.
(2) Both the new classes of compounds and those we have already developed produced type I and tyoe III spectra when incubated with asparagus microsomal cytochrome P-450. The results suggested that the site of action of flower inducing compounds is thought to be cytochrome P-450.
2.Studies on morning glory.
(1) In addition to putrescine that has been found to induce flowering in morning glory seedlings, we found that biogenic polyamines like cadaverine and synthetic 1,6-diaminohexane induce flowering as well as putrescine.
(2) The diamines including 1,6-diaminohexane were found to increase the content of putrescine when applied to induce flowering. The results suggested that the mechanism of action of flower inducing diamines is the regulation of putrescine biosynthesis.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] Naoko Wada: "Flower induction by polyamines and related compounds in seedlings of morning glory(Pharbitis nil cv.Kidachi)" Plant and Cell Physiology. 35. 469-472 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masashi Kusukawa: "N-Pheny-N′-alkoxyformamidines and alkanamidines as potent flower inducing compounds in Asparagus seedlings andtheir effects on microsomal t-cinnamic acid 4-hydroxylase" Bioscience,Biotechnology,and Biochemistry. 58. 2220-2223 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Naoko Wada, Masateru Shinozaki, Hajime Iwamura: " "Flower induction by polyamines and related compounds in seedlings of morning glory (Pharbitis nil cv.Kidachi)"" Plant and Cell Physiology. 35. 469-472 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masashi Kusukawa, Naoko Wada, Koichi Hayakawa, Hajime Iwamura: " "N-Phenyl-N'-alkoxyformamidines and alanamidines as potent flower-inducing compounds in Asparagus seedlings and their effects on microsomal t-cinnamic acid 4-hydroxylase"" Bisoscience, Biotechnology and Biochemistry. 58. 2220-2223 (1994)

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

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Published: 1996-04-15  

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