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河川堆積物における細菌群の特徴に対する原生虫の捕食の影響

Qiaojuan Wang¹, Linhao Zhang², Hui Lin²

¹Key Laboratory of Environmental Aquatic Chemistry, State Key Laboratory of Regional Environment and Sustainability, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Science, Beijing 100049, China; Guangzhou Water Science Research Institute Co., Ltd., Guangzhou 510030, China.

|August 30, 2025

まとめ

プロティストの捕食は河川の堆積物のバクテリア群を大きく変えて栄養素の循環と抗生物質耐性遺伝子に影響を与えます高い捕食量は有害な細菌を減らし,中程度のレベルは抗生物質耐性のリスクを高めます.

科学分野:

環境微生物学
生態系エコロジー
生地化学

背景:

堆積物の微生物コミュニティは生地化学的プロセスと生態系の健康に不可欠です
これらのコミュニティの形成におけるプロティストの捕食の役割はよく理解されていません

研究の目的:

河川の堆積物における細菌集団の構成,機能,抗生物質耐性に対するプロティストの捕食の影響を調査する.

主な方法:

固有のプロティストの濃度が異なる沈殿物の微小宇宙の形成
細菌集団の構成,機能的遺伝子プロファイル (KEGG分析),抗生物質耐性遺伝子 (ARG) の分析

主要な成果:

プロティストの捕食はバクテリアの群れに大きな影響を及ぼし,高い捕食レベルではアルファ多様性と炭素/窒素サイクルバクテリアの豊富さを増加させた.
捕食は炭素,窒素,硫黄のサイクルにおける微生物のプロセスを刺激しました
中程度のプロティストの捕食はARGの豊富さと関連するリスクを増加させ,高い捕食は病原菌を減少させることでそれらを減少させた.

結論:

プロティストの捕食は河川の堆積物における細菌のコミュニティ構造と機能の重要な原動力です
プロティストの捕食レベルは,ARG,VFG,MGEの豊富さと潜在的なリスクに影響します.

キーワード:

抗生物質耐性遺伝子バクテリアコミュニティコミュニティの役割捕食するプロティスト

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