抗生物質によるC-N代謝ネットワークおよびそれに関連する遺伝子経路における大豆 (Glycine max) のシダ

Jie Feng¹, Zhiheng Li¹, Qianqian Liu¹

¹School of Environmental Science and Engineering, Key Laboratory of Solid Waste Treatment and Recycling of Zhejiang Province, International Science and Technology Cooperation Platform for Low-Carbon Recycling of Waste and Green Development, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang Province, China.

Journal of hazardous materials

|September 4, 2025

まとめ

フロルフェニコルなどの獣医用抗生物質は炭素と窒素の代謝を阻害することで大豆の成長を妨げますこの研究ではフロルフェニコルが光合成と重要な酵素を害し植物C-Nバランスと全体的な健康に影響を及ぼすことが明らかになりました

科学分野:

農業科学
環境科学
植物生理学

背景:

農法による抗生物質の汚染は作物の生理にリスクをもたらします
植物の炭素-窒素 (C-N) 代謝に対する植物毒性の具体的なメカニズムは十分に理解されていません.

研究の目的:

フロルフェニコルのC-N代謝ネットワークと大豆 (Glycine max) の苗の遺伝子調節への影響を調査する.
植物におけるフロルフェニコルの植物毒性メカニズムの解明

主な方法:

大豆の苗はフロルフェニコルにさらされた.
成長,細胞の超構造,クロロフィルの含有量,およびクロロフィルの光性を分析した.
C- N代謝に関連する酵素活性,代謝物濃度,遺伝子発現が定量化されました.
トランスクリプション解析により,重要な調節遺伝子が特定されました.

主要な成果:

フロルフェニコルは大豆の成長を著しく抑制し,クロロフィールとルビスコの含有量を低下させ,光学系の機能を低下させた.
炭素代謝が抑制され,光合成が減少し,サクロース合成酵素の活性が低下した.
窒素吸収が妨げられ,窒素還元酵素の活性が低下し,窒素代謝遺伝子が低下した.
主要なボトルネック遺伝子 (窒素のI1LJG4,炭素のPURD) が特定され,C-Nバランスに影響する糖分解の阻害を示した.

結論:

フロルフェニコルは,光合成と炭素と窒素の吸収に関与する重要な酵素を阻害することによって,大豆のC- N代謝を乱します.
糖分解の障害は炭素の骨格の減少につながり,窒素の代謝と輸送を損なう.
これらの発見は,獣医用抗生物質が原発植物代謝にどのように悪影響を及ぼすかについてのメカニズムを強調しています.

キーワード:

炭素代謝フロルフェニコル窒素の吸収大豆トランスクリプトミック分析

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