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大型水生植物にほる植物プランクトンの増殖抑制効果に関する実験的研究

浮游植物生长对大型水生植物抑制作用的实验研究

基本信息

批准号：
06680532
负责人：
細見正明
金额：
$ 0.83万
依托单位：
Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至无数据
项目状态：
已结题

项目摘要

異常増殖した植物プランクトンの増殖抑制対策として、大型水生植物が代謝した生理活性物質を用いた方法がある。この生理活性物質は生物由来の物質であるため、実際に使用した場合でも生態系への影響はほとんどないことが予期される。そこで本研究では、生理活性物質を用いた植物プランクトン増殖抑制方法の基礎的検討として、大型水生植物よりメタノールを用いた生理活性物質の抽出を行い、得られた抽出物について極性及び分子量に基づいた分画操作を施した。また、生理活性物質の生態系への残留の可能性評価するため、増殖抑制効果を示したフラクションの生分解性も検討した。本研究では、大型水生植物としてオオカナダモ、ハゴロモモ、ホザキノフサを用い、植物プランクトンは緑藻類Selenastrum capricornutum、藍藻類Microcystis aeruginosaを使用した。15EA04:ハゴロモモ及びホザキノフサモのメタノール抽出はS.capricornutum及びM.aeruginosaの増殖を抑制したが、オオカナダモの抽出物はM.aeruginosaに対してのみ増殖抑制効果を示した。さらに、抽出物を極性及び分子量に基づいて分画した結果、各大型水生植物の分子量1000以下である最も極性の高いフラクションが植物プランクトンに対する増殖抑制効果を示した。一方、ホザキノフサ抽出物の極性の低いフラクションもM.aeruginosaに対してのみ増殖抑制効果を示した。また、増殖抑制効果を示した極性の高いフラクションの生分解性の検討によって、植物プランクトンの増殖を抑制する物質は、微生物に対して易分解性の物質であることが明らかとなった。

The strategy of colonization inhibition of large aquatic plants and physiologically active substances of large aquatic plants was used. Physiologically active substances, biological origin, biological origin, In this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were used in this study, the physiologically active substances were extracted from the The physiologically active substances are known to be biodegradable, the possibility of residue, the possibility of colonization, and the inhibition of colonization. In this study, macrophytes, algae, algae Selenastrum capricornutum and algae Microcystis aeruginosa were used in this study. 15EA04: the extraction of S.capricornutum and M.aeruginosa, the inhibition of colonization, the extract of M.aeruginosa, the inhibition of colonization, the inhibition of colonization. The results showed that the molecular weight of each large aquatic plant was less than 1000, and that of each large aquatic plant with a molecular weight of less than 1000 was the most sensitive, the highest sex, the plant, the plant and the plant. On the other hand, the extract was not sensitive to the nature of the extract, and the results showed that the colonization was inhibited in the presence of M.aeruginosa. The results of reproductive inhibition and reproductive inhibition show that the biodegradability is not biodegradable, the plant is not biodegradable, the microorganism is biodegradable, the biodegradable substance is biodegradable.