黒海におけるバクテリオクロロフィルの分布から,無酸素光合成の証拠が得られた
D J Repeta1, D J Simpson, B B Jorgensen
1Department of Chemistry, Woods Hole Oceanographic Institution, Massachusetts 02543, USA.
Nature
|November 2, 1989
まとめ
特定の細菌によって誘発される無酸素光合成は,黒海に大きく貢献している.
科学分野:
- マリン・バイオロジー マリン・バイオロジー
- バイオジオケミストリー バイオジオケミストリー
- 微生物生態学 微生物生態学とは
背景:
- 黒海は世界最大の無酸素海洋盆地です.
- 深海での無酸素光合成は議論の余地のある話題です.
- 硫化物豊富な水域に光の浸透は,無酸素原発生産をサポートすることができます.
研究 の 目的:
- 黒海の炭素循環における無酸素光合成の役割を調査する.
- 黒海の水柱の光合成性染料を分析するために.
- 現存する光合成細菌の種類を特定するために.
主な方法:
- suspended particulate matter (懸浮粒子) の光合成性染料の分析について.
- 西黒海流域の2つのステーションでサンプル採取.
- ピグメントの識別と定量化.
主要な成果:
- 高濃度のバクテリオクロロフィルは,ケモクラインで発見されました.
- ピグメントは,Chlorobium phaeobacteroidesとC. phaeovibriodesの存在を示しています.
- バクテリオクロロフィルの濃度は,あるステーションの上下水域のクロロフィルAを超えていた.
結論:
- 無酸素光合成は,黒海における一次生産の重要な構成要素である.
- この現象は最近のもので,浅い化学反応と関連している可能性があります.
- 特定のアロマティックカロテノイドとバクテリオクロロフィールが特定されました.
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