Emergent Plants Improve Nitrogen Uptake Rates by Regulating the Activity of Nitrogen Assimilation Enzymes

文献类型： 外文期刊

第一作者： Hong, Yu

作者： Hong, Yu;Xiang, Wenhua;Lei, Pifeng;Fang, Xi;Hong, Yu;Liu, Ruliang;Xiang, Wenhua;Lei, Pifeng

作者机构：

关键词： nitrogen uptake rate; NH4+/NO3- ratio; nitrogen assimilation enzyme activity; Phragmites australis; Typha orientalis

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2025 年 14 卷 10 期

页码：

收录情况： SCI

摘要： Effectively utilizing aquatic plants to absorb nitrogen from water bodies and convert it into organic nitrogen via nitrogen assimilation enzyme activity reduces water nitrogen concentrations. This serves as a critical strategy for mitigating agricultural non-point source pollution in the Yellow River Basin However, emergent plants' rate and mechanism of uptake of different forms of nitrogen remain unclear. This study determined the nitrogen uptake rates, nitrogen assimilation activities, root properties, and photosynthetic parameters of four emergent plants, Phragmites australis, Typha orientalis, Scirpus validus, and Lythrum salicaria, under five NH4+/NO3- ratios (9:1, 7:3, 5:5, 3:7, and 1:9) using N-15 hydroponic simulations. The results demonstrated that both the form of nitrogen and the plant species significantly influenced the nitrogen uptake rates of emergent plants. In water bodies with varying NH4+/NO3- ratios, P. australis and T. orientalis exhibited significantly higher inorganic nitrogen uptake rates than S. validus and L. salicaria, increasing by 11.83-114.69% and 14.07-130.46%, respectively. When the ratio of NH4+/NO3- in the water body was 9:1, the uptake rate of inorganic nitrogen by P. australis reached its peak, which was 729.20 mu g.N.g(-1).h(-1) DW (Dry Weight). When the ratio of NH4+/NO3- was 5:5, the uptake rate of T. orientalis was the highest, reaching 763.71 mu g.N.g(-1).h(-1) DW. The plants' preferences for different forms of nitrogen exhibited significant environmental plasticity. At an NH4+/NO3- ratio of 5:5, P. australis and T. orientalis preferred NO3--N, whereas S. validus and L. salicaria favored NH4+-N. The uptake rate of NH4+-N by the four plants was significantly positively correlated with glutamine synthetase and glutamate synthase activities, while the uptake rate of NO3--N was significantly positively correlated with NR activity. These findings indicate that the nitrogen uptake and assimilation processes of these four plant species involve synergistic mechanisms of environmental adaptation and physiological regulation, enabling more effective utilization of different nitrogen forms in water. Additionally, the uptake rate of NH4+-N by P. australis and T. orientalis was significantly positively correlated with glutamate dehydrogenase (GDH), suggesting that they are better adapted to eutrophication via the GDH pathway. The specific root surface area plays a crucial role in regulating the nitrogen uptake rates of plants. The amount of nitrogen uptake exerted the greatest total impact on the nitrogen uptake rate, followed by root traits and nitrogen assimilation enzymes. Therefore, there were significant interspecific differences in the uptake rates of and physiological response mechanisms of emergent plants to various nitrogen forms. It is recommended to prioritize the use of highly adaptable emergent plants such as P. australis and T. orientalis in the Yellow River irrigation area.

分类号：

  • 相关文献
作者其他论文 更多>>
  • Diverse protective mechanisms drive changes in functional carbon pools of paddy soil under continuous biochar and inorganic fertilizer application

    作者：Mi, Wenhai;Dong, Hechen;Chen, Hanghui;Gao, Fang;Zhu, Keyao;Hong, Yu;Fan, Jinpeng;Chen, Shuotong;Wu, Qicong;Yan, Peng

    关键词：Biochar amendment; SOM fractionation; Soil microbial community; Solid-state C-13 NMR

  • The global spectrum of tree crown architecture

    作者：Jucker, Tommaso;Fischer, Fabian Jorg;Jackson, Toby D.;Chave, Jerome;Coomes, David A.;Caspersen, John;Ali, Arshad;Loubota Panzou, Grace Jopaul;Loubota Panzou, Grace Jopaul;Bocko, Yannick E.;Loumeto, Jean-Joel;Feldpausch, Ted R.;Falster, Daniel;Usoltsev, Vladimir A.;Adu-Bredu, Stephen;Alves, Luciana F.;Aminpour, Mohammad;Angoboy Ilondea, Bhely;Angoboy Ilondea, Bhely;Anten, Niels P. R.;Antin, Cecile;Barbier, Nicolas;Momo, Stephane T.;Pelissier, Raphael;Ploton, Pierre;Askari, Yousef;Ayyappan, Narayanan;Banin, Lindsay F.;Battles, John J.;O'Hara, Kevin L.;Beeckman, Hans;Bond-Lamberty, Ben;Bongers, Frans;Munoz, Rodrigo;Poorter, Lourens;Sterck, Frank J.;Bowers, Samuel;Godlee, John L.;Ryan, Casey;van Breugel, Michiel;van Breugel, Michiel;Hall, Jefferson S.;van Breugel, Michiel;Chantrain, Arthur;Doucet, Jean-Louis;Fayolle, Adeline;Chaudhary, Rajeev;Kunwar, Suwash;Dai, Jingyu;Liu, Hongyan;Dai, Jingyu;Liu, Hongyan;Dalponte, Michele;Dimobe, Kangbeni;Domec, Jean-Christophe;Domec, Jean-Christophe;Dupuy Rada, Juan Manuel;Hernandez-Stefanoni, Jose L.;Duursma, Remko A.;Enriquez, Moises;Meave, Jorge A.;Munoz, Rodrigo;van Ewijk, Karin Y.;Farfan-Rios, William;Fayolle, Adeline;Forni, Eric;Ferretti, Marco;Haeni, Matthias;Waldner, Peter;Zimmermann, Niklaus E.;Forrester, David I.;Gilani, Hammad;He, Jie-Kun;Jiang, Hai-Sheng;Hemp, Andreas;Higgins, Steven I.;Holdaway, Robert J.;Hussain, Kiramat;Hutley, Lindsay B.;Ichie, Tomoaki;Iida, Yoshiko;Joshi, Puspa Raj;Kaboli, Hasan;Kazempour Larsary, Maryam;Pourbabaei, Hassan;Kenzo, Tanaka;Kloeppel, Brian D.;Kohyama, Takashi S.;Kunwar, Suwash;Wang, Li-Qiu;Kuyah, Shem;Kvasnica, Jakub;Svatek, Martin;Lin, Siliang;Lines, Emily R.;Lorimer, Craig;Malhi, Yadvinder;Marshall, Peter L.;Mattsson, Eskil;Mattsson, Eskil;Matula, Radim;Mensah, Sylvanus;Mensah, Sylvanus;Mi, Xiangcheng;Wang, Weiwei;Momo, Stephane T.;Sonke, Bonaventure;Moncrieff, Glenn R.;Moncrieff, Glenn R.;Mora, Francisco;Munoz, Rodrigo;Nissanka, Sarath P.;Nur Hajar, Zamah Shari;Pearce, Steven;Sanger, Jennifer;Peri, Pablo L.;Pour, Mohsen Javanmiri;Ribeiro, Sabina C.;Sanaei, Anvar;Wirth, Christian;Schlund, Michael;Sellan, Giacomo;Sellan, Giacomo;Shenkin, Alexander;Takagi, Kentaro;Trugman, Anna T.;Vadeboncoeur, Matthew A.;Valipour, Ahmad;Valipour, Ahmad;Vanderwel, Mark C.;Vovides, Alejandra G.;Vovides, Alejandra G.;Wirth, Christian;Woods, Murray;Xiang, Wenhua;de Aquino Ximenes, Fabiano;Xu, Yaozhan;Xu, Yaozhan;Yamada, Toshihiro;Zavala, Miguel A.

    关键词：

  • The effect of Internet use on nutritional intake and health outcomes: new evidence from rural China

    作者：Deng, Zhilong;Liu, Jian;Hong, Yu;Liu, Weigang

    关键词：Internet use; food consumption behaviors; dietary quality; nutrition outcomes; chronic diseases

  • Capital deepening and land average grain yield convergence: Evidence from China

    作者：Zhao, Sicheng;Hong, Yu;Wang, Guogang

    关键词：Capital substitution; Convergence; Food security; Wheat; Maize

  • Yield, Quality, and Nitrogen Leaching of Open-Field Tomato in Response to Different Nitrogen Application Measures in Northwestern China

    作者：Mao, Xinping;Wang, Kun;Han, Fengpeng;Mao, Xinping;Wang, Fang;Liu, Ruliang;Hong, Yu;Wang, Ying;Mao, Xinping;Wang, Fang;Liu, Ruliang;Hong, Yu;Gu, Jialin;Han, Fengpeng

    关键词：agricultural non-point source pollution; nitrogen use efficiency; nitrogen leaching; open-field tomato; principal component analysis; quality

  • Biochar Amendment was Less Effective for Rice Yield Improvement but More Effective for Soil Quality Relative to Inorganic Fertilization in a Low Fertility Paddy Soil

    作者：Chen, Shuotong;Hong, Yu;Guo, Shaokang;Mi, Wenhai;Liu, Guanzhi;Ma, Yingying;Yan, Peng

    关键词：Soil quality index; Soil micronutrient; Enzyme activity; Soil fertility

  • Quantification of Nocturnal Water Use and Its Composition in a Eucalyptus urophylla x E. grandis Plantation on the Leizhou Peninsula, South China

    作者：Wang, Zhichao;Xiang, Wenhua;Wang, Zhichao;Du, Apeng;Xu, Yuxing;Zhu, Wankuan;Wang, Zhichao;Du, Apeng;Liu, Siru

    关键词：nocturnal water use; nocturnal transpiration; stem refilling; Eucalyptus urophylla x E. grandis

微信小程序