ディメチルスルフォニオプロピオネートが海洋植物プランクトンに吸収される割合
Maria Vila-Costa1, Rafel Simó, Hyakubun Harada
1Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar (CSIC), Pg Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalonia, Spain. mariavila@icm.csic.es
Science (New York, N.Y.)
|October 28, 2006
まとめ
植物プランクトンやバクテリアのような海洋微生物は,ジメチルスルフォニオプロピオネート (DMSP) を消費します. このプロセスは有機硫黄を誘導し,プランクトンから大気中に放出される硫黄に影響を及ぼします.
科学分野:
- 海洋微生物生態学について
- バイオジオケミカルサイクルとは
- 海洋学 海洋学とは
背景:
- ディメチルスルフォニオプロピオネート (DMSP) は,海洋生態系における重要な有機硫黄化合物である.
- DMSPは,原産地と消費者の間の硫黄循環において重要な役割を果たしています.
研究 の 目的:
- 海洋微生物によるDMSPの吸収と同化について調査する.
- 海洋微生物の食物網内のDMSP硫黄の運命を理解するために.
主な方法:
- 自然の海洋微生物のコミュニティのインキュベーション.
- 硫黄の吸収を追跡するために,放射性標識のDMSPの使用.
- 主要な植物プランクトンとバクテリアのアクセン菌培養を用いた実験.
主要な成果:
- 主要な植物プランクトン群 (プロクロロコックス,シネココックス,藻) は,DMSP硫黄を吸収する.
- ヘテロトロフ菌もDMSP硫黄を吸収し,同化する.
- プランクトンで生成された有機硫黄の一部は,大気への排出から誘導されます.
結論:
- 海洋植物プランクトンやバクテリアはDMSPを積極的に利用し,硫黄循環に影響を与えます.
- 微生物によるDMSP吸収は,大気中に放出できる有機硫黄の量を減らす.
- この微生物の消費は,海洋硫黄循環における重要なプロセスである.
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