• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Studies on Biosysnthesis of Insecticidal Indole Alkaloid Okaramines

Research Project

Project/Area Number 07660142
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Bioproduction chemistry/Bioorganic chemistry
Research InstitutionOsaka Prefecture University

Principal Investigator

HAYASHI Hideo  Osaka Prefecture University, Department of Biochemistry, Professor, 農学部, 教授 (30128772)

Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1996: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsInsecticide / Okaramine / Penicillium simplicissimum / Indole alkaloid / Penicillium simlicissimum / Penicillium simplicisimum / インドールアルカロイド
Research Abstract

Penicillium simplicissimum ATCC 90288, when grown on okara, produces insecticidal indole alkaloid okaramines, which has a unique structure. To clarify the biogenetic pathway of okaramines, several subjects were carried out, and some results are obtained as follows.
1) To feed labelled compounds, several media for liquid culture were tested. Czapek medium exsibited good growth and good production of okaramines in the presence of methanol extract of okara.
2) Labelled tryptophan was added to the liquid culture, and okaramine B was isolated. Mass spectrum of the isolated okaramine B strongly indicated that indole parts of okaramines are derived from tryptophan.
3) Okara and soyabean are strongly suggested to have some factors which induce okaramine production by P.simplicissimum ATCC 90288. A bioassay system for evaluating okaramine production was established, and these factors were partially purified with this system.
4) A okaramine congener, okaramine G,was isolated from ATCC 90288, and the structure was elucidated.
5) Investigation of terpene-related compounds produced by ATCC 90288 led to the isolation of a new oleanane triterpene.
6) A new soil isolate Aspergillus aculeatus KF-428 produced okaramines A and B together with new congeners okaramines H and I.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] Hideo Hayashi et al.: "New oleanane triterpene with three ketones produced by penecillium simplicissimum ATCC 90288" Biosci. Biotech.Biochem.60(10). 1732-1734 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Hayashi, Y.Asabu, K.Naito, M.Nakayama, H.Nozaki, and M.Arai: "New oleanane triterpene with three ketones produced by Penicillium simplicissimum ATCC 90288" Biosci. Biotech. Biochem.60 (10). 1732-1734 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hideo Hayashi: "New oleanane triterpene with three ketones produced by Penecillium simplicissimum ATCC90288" Biosci. Biotech. Biochem.60(10). 1732-1734 (1996)

    • Related Report
      1996 Annual Research Report

URL: 

Published: 1995-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi