| Project/Area Number |
11660112
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Bioproduction chemistry/Bioorganic chemistry
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| Research Institution | Yamaguchi University |
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Principal Investigator |
KAJIWARA Tadahiko Yamaguchi University, Faculty of Agriulture, Professor, 農学部, 教授 (90035121)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUI Kenji Yamaguchi University, Faculty of Agriculture, Associate Professor, 農学部, 助教授 (90199729)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | marine algae / green algae / Bryopsis maxima / sex pheromone / male gamete-attracting substance / induction of maturation / gametophyte / gamete / 雄性配偶子誘引活性 |
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| Research Abstract |
Up to date, eleven sex pheromones have been identified in marine brown algae, however, the sex pheromones of green marine algae have not been known so far. Thus, the green algal pheromones were explored. 1) The maturation of female and male gametophytes of Bryopsis maxima collected along Kimigahama coast, Chyoshi, Chiba pref. January, was induced under culture for 3 days at 14.5℃ with air bubbling. The maturation of female gametophytes was comfirmed by attraction of male gametes. 2) Female gametes from the matured gametophytes showed a halo of male gametes in addition of a drop of male gamete suspension. 3) The female culture solution having male game-attracting activity was fractionated to a water layer and an organic layer. The water soluble fraction showed a prominent male gamete-attracting activity and only a weak activity in the water in soluble fraction as well as brown algal pheromones such as dictyopterene B (hormosirene), dictyopterene C' (dictyotene) and dictyopterene D' (ectocarpene).
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