Article
Horticulture
Minggui Gong, Qiaoming Zhang, Kang Cheng, Haoqiang Zhang
Summary: The influence of Rhizophagus irregularis, different nitrogen forms (NO3- and NH4+), and nitrogen levels (1.5, 7.5, 15, 30 mM) on the performance of L. barbarum was evaluated through a pot experiment. It was found that the application of R. irregularis significantly improved L. barbarum biomass, net photosynthetic rate, and root tissue viability, especially under NO3- supply. The study highlights the importance of mycorrhizal symbiosis for nitrogen acquisition in L. barbarum and provides a basis for maintaining beneficial AM symbiosis during nitrogen fertilizer use in arable land.
Article
Plant Sciences
Avia Saloner, Nirit Bernstein
Summary: The ratio of NH4/NO3 supply to cannabis plants has a significant impact on plant function and production. Higher NH4 levels may lead to adverse effects, while moderate levels are suitable for medical cannabis cultivation.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Soil Science
Phillip Chalk, Christopher Smith
Summary: The relative uptake of ammonium (NH4+) and nitrate (NO3-) by plants has been widely studied, but there is still debate on how to measure plant preference for these nitrogen forms. Techniques such as unlabelled sources, N-15-enrichment, and N-15 natural abundance have been used, but each has its limitations and challenges in accurately determining plant uptake preferences. It is suggested that plants exhibit flexibility or plasticity in nitrogen form acquisition rather than strict preference.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Muhammad Khalid Hameed, Wajid Umar, Ali Razzaq, Tariq Aziz, Muhammad Aamer Maqsood, Shiwei Wei, Qingliang Niu, Danfeng Huang, Liying Chang
Summary: Nitrogen is an essential element for plant growth, and different nitrogen sources and forms have significant effects on the biomass, quality, and metabolite composition of lettuce. The NH4+/NO3- ratio plays a crucial role in determining the chlorophyll content and biomass of lettuce. The 25% NH4+/75% NO3- ratio is the most suitable for increasing lettuce biomass in hydroponic cultivation systems. Different concentrations of nitrogen sources also affect the taste and quality-related compounds in lettuce.
Article
Agricultural Engineering
Fatemeh Ahmadi, Abbas Samadi, Ebrahim Sepehr, Amir Rahimi, Sergey Shabala
Summary: Different sizes of perlite and various NO3-/NH4+ ratios significantly affect plant growth parameters and phytochemical properties. The medium containing very fine-grade perlite with a 50:50 volume ratio of perlite to peat moss showed optimal performance for Echinacea purpurea plant growth and phytochemical properties. An increase in the NO3-/NH4+ ratio led to a significant improvement in plant growth parameters and phytochemical properties of Echinacea purpurea.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Plant Sciences
Jianyu Xie, Xiaoxun Xu, Shirong Zhang, Zhanbiao Yang, Guiyin Wang, Ting Li, Yulin Pu, Wei Zhou, Changlian Xu, Guochun Lv, Zhang Cheng, Junren Xian, Zhien Pu
Summary: This experiment investigated the changes in the rhizosphere soil microenvironment of hyperaccumulation-soil system under Cd stress. The results showed that Cd induced acidification of the soil and increased the accumulation of dissolved organic carbon and readily oxidizable organic carbon. The labile Cd fraction in the soil solution also increased significantly. Additionally, the rhizosphere microenvironment alleviated the inhibition of Cd on soil microorganisms and enzymes, enhancing the tolerance of S. orientalis to Cd.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Engineering, Environmental
Shaoting Du, Qi Lu, Lijuan Liu, Yu Wang, Jiaxin Li
Summary: The study found that catabolizing abscisic acid (ABA) in hyperaccumulating plants via rhizobacteria can significantly increase the uptake efficiency of heavy metals, potentially providing a promising strategy for enhancing phytoremediation efficacy in HM-contaminated soils.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Plant Sciences
Mona Schiefloe, Oyvind Mejdell Jakobsen, Antonio Pannico, Claudia Quadri, Ann-Iren Kittang Jost
Summary: In-situ production of food, water, and oxygen is crucial for long-duration human space missions. Higher plants are essential in Bioregenerative Life Support Systems (BLSS), where crop cultivation can utilize water and nutrients recovered from waste and wastewater. Human urine is an important waste stream that can provide crops with nitrogen (N) and other nutrients.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Forestry
Rui Zhang, Zhongyi Yang, Yunpeng Wang, Jiayi Wang, Yi Wang, Zhichun Zhou
Summary: Both NH4+ and NO3- can greatly influence plant growth and biomass, and their deposition have different effects on root development and activity in subtropical tree species. Pine tree species exhibited higher root absorption efficiency, while nitrogen deposition was found to be more beneficial to root growth of broadleaved tree species.
Article
Environmental Sciences
Wei Yang, Huiping Dai, Lidia Skuza, Shuhe Wei
Summary: The study aimed to increase the phytoremediation efficiency of Solanum nigrum L. in suitable climatic conditions for plant growth through multiple harvests. The application of different types of N fertilizers significantly improved the root and shoot biomasses, as well as the Cd phytoextraction efficiency. The shoot biomasses harvested at the first florescence stage plus the amounts at the second florescence stage were higher than those harvested at the maturation stage. pH value and extractable Cd contents did not change regardless of N fertilizer application. Additionally, the application of N fertilizer led to lower H2O2 and MDA contents, as well as decreased concentration of proline in S. nigrum. The activity of CAT decreased, while POD and SOD activities increased after N fertilizer application.
Article
Geochemistry & Geophysics
Mingda Cao, Xijie Yin, Jie Zhang, Menggui Jin, Xin Huang
Summary: This study investigated nitrogen sources and transformations in an agricultural watershed in central China using multiple isotopes and hydrogeochemical data. The results showed that ammonium fertilizers, nitrate fertilizers, and soil organic nitrogen were the main sources of nitrogen in the watershed. Seasonal variations in nitrogen isotopes provided evidence for nitrification, while changes in delta O-18-NO3- effectively indicated the impact of rainfall events on the nitrogen cycle.
APPLIED GEOCHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
Laxmi Linggi, Mohanadhas Berlin, Mainak Mallik, Shantonu Roy, Narayanan Natarajan, Mangottiri Vasudevan
Summary: The study investigates the adsorption of ammonium and nitrate on different types of soil and sand materials, finding that red soil has higher adsorption capacity for ammonium while sandy soil has lower adsorption capacity for nitrate. Moreover, the contact time was identified as a significant parameter affecting the adsorption performance.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2021)
Article
Environmental Sciences
Mansi Bakshi, Arun Kumar
Summary: This study evaluated the feasibility of using titanium dioxide nanoparticles (TiO2 NPs) along with Brassica juncea L. for effective removal of Cadmium (Cd) from the soil. The results showed that TiO2 NPs enhanced the tolerance of plants to Cd and promoted plant growth and photosynthetic activity. The application of TiO2 NPs at different concentrations significantly increased Cd removal from the soil. Therefore, the combination of nanoparticles and phytoremediation has great potential for the remediation of contaminated soil.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Horticulture
Yudan Wang, Xiaoyun Zhang, Houcheng Liu, Guangwen Sun, Shiwei Song, Riyuan Chen
Summary: The aim of this study was to examine the effects of different NH4+/NO3- ratios on the growth and nitrogen uptake of Chinese kale under hydroponic conditions. The results showed that an appropriate NH4+/NO3- ratio promoted the growth of Chinese kale, while a high ratio inhibited growth. Additionally, the study found that an increase in NH4+ facilitated nutrient uptake, but excessive addition could lead to rhizosphere acidification and ammonia toxicity.
Article
Plant Sciences
Yunna Zhu, Baifu Qi, Yanwei Hao, Houcheng Liu, Guangwen Sun, Riyuan Chen, Shiwei Song
Summary: Compared with the control, T1 and T2 significantly increased the economic yield of flowering Chinese cabbage, while T3 significantly reduced plant yield. Different NH4+/NO3- ratios significantly affected the nutrient content and growth performance of flowering Chinese cabbage.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Miaomiao Cheng, Peter M. Kopittke, Anan Wang, Caixian Tang
Article
Soil Science
Tengxiang Lian, Zhenhua Yu, Yansheng Li, Jian Jin, Guanghua Wang, Xiaobing Liu, Caixian Tang, Ashley Franks, Junjie Liu, Judong Liu
APPLIED SOIL ECOLOGY
(2019)
Article
Soil Science
Clayton R. Butterly, Roger D. Armstrong, Deli Chen, Caixian Tang
BIOLOGY AND FERTILITY OF SOILS
(2019)
Article
Environmental Sciences
Jie Cheng, Lili Xue, Min Zhu, Jiayin Feng, Jue Shen-Tu, Jianming Xu, Philip C. Brookes, Caixian Tang, Yan He
ENVIRONMENTAL POLLUTION
(2019)
Article
Environmental Sciences
Hao Wu, Hongshan Chen, Chongwei Jin, Caixian Tang, Yongsong Zhang
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Agronomy
Qiao Xu, James B. O'Sullivan, Xiaojuan Wang, Caixian Tang
Article
Engineering, Environmental
Dan Huang, Jizi Wu, Lu Wang, Xingmei Liu, Jun Meng, Xianjin Tang, Caixian Tang, Jianming Xu
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Soil Science
Ashlea Doolette, Roger Armstrong, Caixian Tang, Chris Guppy, Sean Mason, Ann McNeill
NUTRIENT CYCLING IN AGROECOSYSTEMS
(2019)
Article
Environmental Sciences
Jian Jin, Roger Armstrong, Caixian Tang
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Environmental Sciences
Qiao Xu, Jian Jin, Xiaojuan Wang, Roger Armstrong, Caixian Tang
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Microbiology
Junjie Liu, Zhenhua Yu, Qin Yao, Yueyu Sui, Yu Shi, Haiyan Chu, Caixian Tang, Ashley E. Franks, Jian Jin, Xiaobing Liu, Guanghua Wang
FRONTIERS IN MICROBIOLOGY
(2019)
Article
Environmental Sciences
Yunfa Qiao, Shujie Miao, Qi Li, Jian Jin, Xiaosan Luo, Caixian Tang
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Soil Science
Yan Xu, Yan He, Eleonora Egidi, Ashley E. Franks, Caixian Tang, Jianming Xu
SOIL BIOLOGY & BIOCHEMISTRY
(2019)
Article
Soil Science
C. Celestina, P. W. G. Sale, J. R. Hunt, C. Tang, A. E. Franks
Article
Agriculture, Multidisciplinary
Peter W. Sale, Jaikirat S. Gill, Renick R. Peries, Caixian Tang
CROP & PASTURE SCIENCE
(2019)