海洋生物質へのペラジック菌の貢献
Eva Breyer1, Constanze Stix2, Sophie Kilker2
1Fungal and Biogeochemical Oceanography Group, College of Oceanography and Ecological Science, Shanghai Ocean University, Nanhui New City, 201306 Shanghai, China; Fungal and Biogeochemical Oceanography Group, Department of Functional and Evolutionary Ecology, University of Vienna, 1030 Vienna, Austria.
Cell
|May 24, 2025
まとめ
この研究では 海洋の炭素貯蔵に 大きく貢献していることが 定量化されています この発見は 海洋の炭素循環モデルを改善するために 極めて重要です
科学分野:
- 海洋生物学
- 生地化学
- 微生物生態学
背景:
- メタゲノミクス研究により,地球上の海洋に 豊富なペラジック・キノコが発見されました
- pelagic fungi が炭素貯蔵量に与える量的な貢献はほとんど知られていない.
- この知識のギャップは,生物地球化学モデルでの正確な表現を妨げています.
研究 の 目的:
- オープンオーシャン水柱のペラジックキノコのバイオマスを定量化します.
- 菌類のバイオマスを他の主要な海洋微生物群 (古生物や細菌) と比較する.
- 菌類を海洋生物化学モデルに 含めるための情報
主な方法:
- エルゴステロール抽出
- カルコフローアホワイト染色
- カタライズされたレポーター堆積の光 in situ 混合化 (CARD-FISH)
- マイクロ流体質量センサー技術
主要な成果:
- 全球のペラジックキノコのバイオマスは0.32 Gt C (CI: 0.19-0.46) と見積もられている.
- 菌類のバイオマスは古生物のバイオマスを上回り,古生物:菌類:細菌の比率は1:9:44である.
- 菌類のバイオマスの不確実性の推定値は 2 桁減少した.
結論:
- ペラジック菌は 海洋生物の重要な構成要素です
- 菌類は海洋の炭素循環に 重要な役割を果たします
- pelagic fungi を biogeochemical モデルに組み込むことは,正確な地球規模の炭素の計算に不可欠です.
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