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Chen Z, Liu Z, Song C. Agricultural fertilization near marshes impacts the potential for greenhouse gas emissions from wetland ecosystems by modifying microbial communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172400. [PMID: 38631634 DOI: 10.1016/j.scitotenv.2024.172400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 03/15/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024]
Abstract
Ensuring agricultural security and preserving the health of wetland ecosystems are crucial concerns facing northeast China. However, the adverse effects of environmental pollution, especially nitrogen (N), caused by prolonged agricultural development on the health of marsh wetlands cannot be systematically recognized. To address this issue, an 18-year trial with four different levels of N application was carried out in a typical area of the Northeast region: 0, 6, 12, and 24 gN·m-2·a-1 (referred to as CK, N6, N12, and N24, respectively) to investigate changes in wetland ecological functioning. The results showed that long-term N input significantly enhanced soil N availability. High-level of N addition (N24) significantly reduced soil bacterial richness in October, while fungal diversity was significantly higher in June than in October for both control and N6 treatments. The main environmental factors affecting microorganisms in June were TN, NH4+, and EC, while bacterial and fungal communities were influenced by TN and Leaf Area Index (LAI), respectively, in October. It was found that the AN16S gene was significantly higher in June than in October, indicating that summer is the critical time for N removal in the wetland. N addition significantly reduced the abundance of the NIFH gene and decreased the N fixation potential of the wetland. In June, low and medium levels of N inputs promoted denitrification processes in the wetland and elevated the wetland N2O emission potential. The abundance of NARG, NIRK, and NOSZ genes decreased significantly in October compared to June, indicating a decrease in the wetland N2O emission potential. Additionally, it was observed that soil methanotrophs were positively affected by NH4+ and TN in October, thereby reducing the wetland CH4 emission potential. Our research provides a systematic understanding of the impact of agricultural N pollution on marsh wetlands, which can inform strategies to protect wetland health.
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Affiliation(s)
- Zhenbo Chen
- Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116023, China
| | - Zhihong Liu
- Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116023, China.
| | - Changchun Song
- Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116023, China.
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2
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Elrys AS, Desoky ESM, Zhu Q, Liu L, Yun-Xing W, Wang C, Shuirong T, Yanzheng W, Meng L, Zhang J, Müller C. Climate controls on nitrate dynamics and gross nitrogen cycling response to nitrogen deposition in global forest soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:171006. [PMID: 38369137 DOI: 10.1016/j.scitotenv.2024.171006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 02/06/2024] [Accepted: 02/13/2024] [Indexed: 02/20/2024]
Abstract
Understanding the patterns and controls regulating nitrogen (N) transformation and its response to N enrichment is critical to re-evaluating soil N limitation or availability and its environmental consequences. Nevertheless, how climatic conditions affect nitrate dynamics and the response of gross N cycling rates to N enrichment in forest soils is still only rudimentarily known. Through collecting and analyzing 4426-single and 769-paired observations from 231 15N labeling studies, we found that nitrification capacity [the ratio of gross autotrophic nitrification (GAN) to gross N mineralization (GNM)] was significantly lower in tropical/subtropical (19%) than in temperate (68%) forest soils, mainly due to the higher GNM and lower GAN in tropical/subtropical regions resulting from low C/N ratio and high precipitation, respectively. However, nitrate retention capacity [the ratio of dissimilatory nitrate reduction to ammonium (DNRA) plus gross nitrate immobilization (INO3) to gross nitrification] was significantly higher in tropical/subtropical (86%) than in temperate (54%) forest soils, mainly due to the higher precipitation and GNM of tropical/subtropical regions, which stimulated DNRA and INO3. As a result, the ratio of GAN to ammonium immobilization (INH4) was significantly higher in temperate than in tropical/subtropical soils. Climatic rather than edaphic factors control heterotrophic nitrification rate (GHN) in forest soils. GHN significantly increased with increasing temperature in temperate regions and with decreasing precipitation in tropical/subtropical regions. In temperate forest soils, gross N transformation rates were insensitive to N enrichment. In tropical/subtropical forests, however, N enrichment significantly stimulated GNM, GAN and GAN to INH4 ratio, but inhibited INH4 and INO3 due to reduced microbial biomass and pH. We propose that temperate forest soils have higher nitrification capacity and lower nitrate retention capacity, implying a higher potential risk of N losses. However, tropical/subtropical forest systems shift from a conservative to a leaky N-cycling system in response to N enrichment.
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Affiliation(s)
- Ahmed S Elrys
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China; College of Tropical Crops, Hainan University, Haikou 570228, China; Soil Science Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt; Liebig Centre for Agroecology and Climate Impact Research, Justus Liebig University, Germany
| | - El-Sayed M Desoky
- Botany Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Qilin Zhu
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Lijun Liu
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Wan Yun-Xing
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Chengzhi Wang
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Tang Shuirong
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China; College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Wu Yanzheng
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Lei Meng
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China; College of Tropical Crops, Hainan University, Haikou 570228, China.
| | - Jinbo Zhang
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China; College of Tropical Crops, Hainan University, Haikou 570228, China; Liebig Centre for Agroecology and Climate Impact Research, Justus Liebig University, Germany; School of Geography, Nanjing Normal University, Nanjing 210023, China.
| | - Christoph Müller
- Liebig Centre for Agroecology and Climate Impact Research, Justus Liebig University, Germany; Institute of Plant Ecology, Justus Liebig University Giessen, Heinrich-Buff-Ring 26, 35392 Giessen, Germany; School of Biology and Environmental Science and Earth Institute, University College Dublin 4, Ireland
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3
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Fan Z, Lali MN, Xiong H, Luo Y, Wang Y, Wang Y, Lu M, Wang J, He X, Shi X, Zhang Y. Seedlings of Poncirus trifoliata exhibit tissue-specific detoxification in response to NH 4 + toxicity. PLANT BIOLOGY (STUTTGART, GERMANY) 2024; 26:467-475. [PMID: 38466186 DOI: 10.1111/plb.13621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 01/18/2024] [Indexed: 03/12/2024]
Abstract
Ammonium nitrogen (NH4 +-N) is essential for fruit tree growth, but the impact of excess NH4 +-N from fertilizer on evergreen citrus trees is unclear. In a climate chamber, 8-month-old citrus plants were exposed to five different hydroponic NH4 +-N concentrations (0, 5, 10, 15 and 20 mm) for 1 month to study effects of NH4 +-N on growth characteristics, N uptake, metabolism, antioxidant enzymes and osmotic regulatory substances. Application of 10 mm NH4 +-N adversely affected root plasma membrane integrity, root physiological functions, and plant biomass. MDA, CAT, POD, APX and SOD content were significantly correlated with leaf N metabolic enzyme activity (GOGAT, GDH, GS and NR). GDH was the primary enzyme involved in NH4 +-N assimilation in leaves, while the primary pathway involved in roots was GS-GOGAT. Under comparatively high NH4 + addition, roots were the main organs involved in NH4 + utilization in citrus seedlings. Our results demonstrated that variations in NH4 + concentration and enzyme activity in various organs are associated with more effective N metabolism in roots than in leaves to prevent NH4 + toxicity in evergreen woody citrus plants. These results provide insight into the N forms used by citrus plants that are important for N fertilizer management.
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Affiliation(s)
- Z Fan
- College of Resources and Environment, Southwest University, Chongqing, China
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - M N Lali
- College of Resources and Environment, Southwest University, Chongqing, China
- Department of Forestry and Natural Resources, Faculty of Agriculture, Bamyan University, Bamyan, Afghanistan
| | - H Xiong
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Y Luo
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Y Wang
- College of Resources and Environment, Southwest University, Chongqing, China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, China
| | - Y Wang
- Development and Guidance Station of Cereal and Oil Crops in Hechuan District, Chongqing, China
| | - M Lu
- College of Resources and Environment, Southwest University, Chongqing, China
- Chongqing Agro-Tech Extension Station, Chongqing, China
| | - J Wang
- College of Resources and Environment, Southwest University, Chongqing, China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, China
| | - X He
- College of Resources and Environment, Southwest University, Chongqing, China
| | - X Shi
- College of Resources and Environment, Southwest University, Chongqing, China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, China
| | - Y Zhang
- College of Resources and Environment, Southwest University, Chongqing, China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, China
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Li M, Qin Z, Duan M, Wang Q, Zhou B, Weng H. Effects of micro-nano bubble water addition on maturation degree and microbial community during aerobic composting. CHEMOSPHERE 2024; 353:141657. [PMID: 38452978 DOI: 10.1016/j.chemosphere.2024.141657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 03/03/2024] [Accepted: 03/05/2024] [Indexed: 03/09/2024]
Abstract
In order to explore the effects of micro-nano bubble water (MNBW) on compost maturation and the microbial community in cow manure and straw during aerobic composting, we conducted composting tests using tap water with 12 mg/L (O12), 15 mg/L (O15), 18 mg/L (O18), and 21 mg/L (O21) dissolved oxygen in MNBW, as well as tap water with 9 mg/L dissolved oxygen as a control (CK). The results showed that O21 increased the maximum compost temperature to 64 °C, which was higher than the other treatments. All treatments met the harmless standards for compost. The seed germination index (GI) was largest under O21 and 15.1% higher than that under CK, and the non-toxic compost degree was higher. Redundancy analysis showed that the temperature, C/N, pH, and GI were important factors that affected the microbial community composition. The temperature, C/N, and pH were significantly positively correlated with Firmicutes and Actinobacteria (p < 0.05). Firmicutes was the dominant phylum in the mesophilic stage (2-6 days) and it accounted for a large proportion under O21, where the strong thermophilic metabolism increased the production of heat and prolonged the high temperature period. The bacterial genus Ammoniibacillus in Firmicutes accounted for a large proportion under O21 and it accelerated the decomposition of substrates. Therefore, the addition of MNBW changed the microbial community to affect the maturation of the compost, and the quality of the compost was higher under O21.
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Affiliation(s)
- Mingxiu Li
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, China
| | - Zhenlun Qin
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, China
| | - Manli Duan
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, China.
| | - Quanjiu Wang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, China
| | - Beibei Zhou
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, China
| | - Haiyong Weng
- College of Mechanical and Electrical Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Khalil S, Strah R, Lodovici A, Vojta P, Berardinis FD, Ziegler J, Pompe Novak M, Zanin L, Tomasi N, Forneck A, Griesser M. The activation of iron deficiency responses of grapevine rootstocks is dependent to the availability of the nitrogen forms. BMC PLANT BIOLOGY 2024; 24:218. [PMID: 38532351 PMCID: PMC10964708 DOI: 10.1186/s12870-024-04906-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/13/2024] [Indexed: 03/28/2024]
Abstract
BACKGROUND In viticulture, iron (Fe) chlorosis is a common abiotic stress that impairs plant development and leads to yield and quality losses. Under low availability of the metal, the applied N form (nitrate and ammonium) can play a role in promoting or mitigating Fe deficiency stresses. However, the processes involved are not clear in grapevine. Therefore, the aim of this study was to investigate the response of two grapevine rootstocks to the interaction between N forms and Fe uptake. This process was evaluated in a hydroponic experiment using two ungrafted grapevine rootstocks Fercal (Vitis berlandieri x V. vinifera) tolerant to deficiency induced Fe chlorosis and Couderc 3309 (V. riparia x V. rupestris) susceptible to deficiency induced Fe chlorosis. RESULTS The results could differentiate Fe deficiency effects, N-forms effects, and rootstock effects. Interveinal chlorosis of young leaves appeared earlier on 3309 C from the second week of treatment with NO3-/NH4+ (1:0)/-Fe, while Fercal leaves showed less severe symptoms after four weeks of treatment, corresponding to decreased chlorophyll concentrations lowered by 75% in 3309 C and 57% in Fercal. Ferric chelate reductase (FCR) activity was by trend enhanced under Fe deficiency in Fercal with both N combinations, whereas 3309 C showed an increase in FCR activity under Fe deficiency only with NO3-/NH4+ (1:1) treatment. With the transcriptome analysis, Gene Ontology (GO) revealed multiple biological processes and molecular functions that were significantly regulated in grapevine rootstocks under Fe-deficient conditions, with more genes regulated in Fercal responses, especially when both forms of N were supplied. Furthermore, the expression of genes involved in the auxin and abscisic acid metabolic pathways was markedly increased by the equal supply of both forms of N under Fe deficiency conditions. In addition, changes in the expression of genes related to Fe uptake, regulation, and transport reflected the different responses of the two grapevine rootstocks to different N forms. CONCLUSIONS Results show a clear contribution of N forms to the response of the two grapevine rootstocks under Fe deficiency, highlighting the importance of providing both N forms (nitrate and ammonium) in an appropriate ratio in order to ease the rootstock responses to Fe deficiency.
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Affiliation(s)
- Sarhan Khalil
- University of Natural Resources and Life Sciences, Vienna, Department of Crop Sciences, Institute of Viticulture and Pomology, Tulln an der Donau, Austria.
| | - Rebeka Strah
- National Institute of Biology, Department of Biotechnology and Systems Biology, Ljubljana,, Slovenia
- Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Arianna Lodovici
- University of Udine, Department of Agricultural, Food, Environmental, and Animal Sciences, Udine, Italy
| | - Petr Vojta
- University of Natural Resources and Life Sciences, Vienna, Department of Biotechnology, Institute of Computational Biology, Vienna, Austria
| | - Federica De Berardinis
- University of Natural Resources and Life Sciences, Vienna, Department of Crop Sciences, Institute of Viticulture and Pomology, Tulln an der Donau, Austria
| | - Jörg Ziegler
- Leibniz Institute of Plant Biochemistry, Department Molecular Signal Processing, Halle (Saale), Germany
| | - Maruša Pompe Novak
- National Institute of Biology, Department of Biotechnology and Systems Biology, Ljubljana,, Slovenia
- University of Nova Gorica, Faculty of Viticulture and Enology, Vipava, Slovenia
| | - Laura Zanin
- University of Udine, Department of Agricultural, Food, Environmental, and Animal Sciences, Udine, Italy
| | - Nicola Tomasi
- University of Udine, Department of Agricultural, Food, Environmental, and Animal Sciences, Udine, Italy
| | - Astrid Forneck
- University of Natural Resources and Life Sciences, Vienna, Department of Crop Sciences, Institute of Viticulture and Pomology, Tulln an der Donau, Austria
| | - Michaela Griesser
- University of Natural Resources and Life Sciences, Vienna, Department of Crop Sciences, Institute of Viticulture and Pomology, Tulln an der Donau, Austria.
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Li L, Wang H, Hu J, Fang Y, Zhou F, Yu J, Chi R, Xiao C. Comparison of microbial communities in unleached and leached ionic rare earth mines. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:17511-17523. [PMID: 38342835 DOI: 10.1007/s11356-024-32221-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 01/23/2024] [Indexed: 02/13/2024]
Abstract
The leaching of ionic rare earth elements has caused serious environmental pollution and ecological damage. Microorganisms play a crucial role in soil ecosystems and are one of the most important components of these systems. However, there are fewer studies related to the changes that occur in microbial community structure and diversity before and after leaching in ionic rare earth mines. In this study, Illumina high-throughput sequencing was used to examine the diversity and composition of soil microorganisms on the summit, hillside, and foot valley surfaces of unleached and leached mines after in situ leaching. The results showed that microbial diversity and abundance in the surface soil of the unleached mine were higher than those in the leached mine, and leaching had a significant impact on the microbial community of mining soil. pH was the main factor affecting the microbial community. Proteobacteria, Actinobacteriota, and Chloroflexi were phyla that showed high abundance in the soil. Network analysis showed that microbial interactions can improve microbial adaptation and stability in harsh environments. PICRUSt2 predictions indicate functional changes and linkages in soil microbial communities.
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Affiliation(s)
- Lingyan Li
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Haitao Wang
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Jingang Hu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Yun Fang
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Fang Zhou
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Junxia Yu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Ruan Chi
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Chunqiao Xiao
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, 430205, China.
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Skleničková K, Suchopárová E, Abbrent S, Pokorný V, Kočková O, Nevoralová M, Cajthaml T, Strejček M, Uhlík O, Halecký M, Beneš H. Biodegradation of aliphatic polyurethane foams in soil: Influence of amide linkages and supramolecular structure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169062. [PMID: 38061651 DOI: 10.1016/j.scitotenv.2023.169062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/22/2023] [Accepted: 11/30/2023] [Indexed: 01/18/2024]
Abstract
Polyurethane (PU) foams are classified as physically nonrecyclable thermosets. The current effort of sustainable and eco-friendly production makes it essential to explore methods of better waste management, for instance by modifying the structure of these frequently used polymers to enhance their microbial degradability. The presence of ester links is known to be a crucial prerequisite for the biodegradability of PU foams. However, the impact of other hydrolysable groups (urethane, urea and amide) occurred in PU materials, as well as the supramolecular structure of the PU network and the cellular morphology of PU foams, is still relatively unexplored. In this work, fully aliphatic PU foams with and without hydrolyzable amide linkages were prepared and their aerobic biodegradation was investigated using a six-month soil burial test. Besides the variable chemical composition of the PU foams, the influence of their different supramolecular arrangement and cellular morphologies on the extent of biodegradation was also evaluated. Throughout the soil burial test, the release of carbon dioxide, and enzyme activities of proteases, esterases, and ureases were measured. At the same time, phospho-lipid fatty acids (PLFA) analysis was conducted together with an assessment of microbial community composition achieved by analysing the genetic information from the 16S rRNA gene and ITS2 region sequencing. The results revealed a mineralization rate of 30-50 % for the PU foams, indicating a significant level of degradation as well as indicating that PU foams can be utilized by soil microorganisms as a source of both energy and nutrients. Importantly, microbial biomass remained unaffected, suggesting that there was no toxicity associated with the degradation products of the PU foams. It was further confirmed that ester linkages in PU foam structure were easily enzymatically cleavable, while amide linkages were not prone to degradation by soil microorganisms. In addition, it was shown that the presence of amide linkages in PU foam leads to a change in the supramolecular network arrangement due to increased content of hard segments, which in turn reduces the biodegradability of PU foam. These findings show that it is important to consider both chemical composition and supramolecular/macroscopic structure when designing new PU materials in an effort to develop environmentally friendly alternatives.
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Affiliation(s)
- Kateřina Skleničková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic; Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic
| | - Eliška Suchopárová
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic
| | - Sabina Abbrent
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Václav Pokorný
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Olga Kočková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Martina Nevoralová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Tomáš Cajthaml
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, Prague 4 142 20, Czech Republic
| | - Michal Strejček
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic
| | - Ondřej Uhlík
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic
| | - Martin Halecký
- Department of Biotechnology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic.
| | - Hynek Beneš
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic.
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Proshad R, Li J, Sun G, Zheng X, Yue H, Chen G, Zhang S, Li Z, Zhao Z. Field application of hydroxyapatite and humic acid for remediation of metal-contaminated alkaline soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:13155-13174. [PMID: 38243026 DOI: 10.1007/s11356-024-32015-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 01/10/2024] [Indexed: 01/21/2024]
Abstract
The quality of soil is essential for ensuring the safety and quality of agricultural products. However, soils contaminated with toxic metals pose a significant threat to agricultural production and human health. Therefore, remediation of contaminated soils is an urgent task, and humic acid (HA) with hydroxyapatite (HAP) materials was applied for this study in contaminated alkaline soils to remediate Cd, Pb, Cu, and Zn. Physiochemical properties, improved BCR sequential extraction, microbial community composition in soils with superoxide dismutase (SOD), peroxidase (POD), and chlorophyll content in plants were determined. Among the studied treatments, application of HAP-HA (2:1) (T7) had the most significant impact on reducing the active forms of toxic metals from soil such as Cd, Pb, Cu, and Zn decreased by 18.59%, 9.12%, 11.83%, and 3.33%, respectively, but HAP and HA had a minor impact on metal accumulation in Juncao. HAP (T2) had a beneficial impact on reducing the TCleaf/root of Cd, Cu, and Zn, whereas HAP-HA (T5) showed the best performance for reducing Cd and Cu in EFleaf/soil. HAP-HA (T5 and T7) showed higher biomass (57.3%) and chlorophyll (17.9%), whereas HAP (T4) showed better performance in POD (25.8%) than T0 in Juncao. The bacterial diversity in soil was increased after applying amendments of various treatments and enhancing metal remediation. The combined application of HAP and HA effectively reduced active toxic metals in alkaline soil. HAP-HA mixtures notably improved soil health, plant growth, and microbial diversity, advocating for their use in remediating contaminated soils.
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Affiliation(s)
- Ram Proshad
- Key Laboratory of Mountain Environment Evolvement and Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Jie Li
- CCTEG Chongqing Engineering (Group) Co., LTD., Chongqing, 400000, People's Republic of China
| | - Guohuai Sun
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Xu Zheng
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Haoyu Yue
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Geng Chen
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Shuangting Zhang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Ziyi Li
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Zhuanjun Zhao
- Key Laboratory of Mountain Environment Evolvement and Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, People's Republic of China.
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Wang Y, Zhang F, Liao X, Yang X, Zhang G, Zhang L, Wei C, Shi P, Wen J, Ju X, Xu C, Liu Y, Lan Y. Disturbance mitigation of thiencarbazone-methyl·isoxaflutole on bacterial communities through nitrification inhibitor and attapulgite. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 340:122840. [PMID: 37926417 DOI: 10.1016/j.envpol.2023.122840] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/06/2023] [Accepted: 10/29/2023] [Indexed: 11/07/2023]
Abstract
There is a knowledge gap in the interaction between the effects of herbicide thiencarbazone-methyl·isoxaflutole on soil microflora and environmental parameters, which leads to a lack of measures in mitigating damage to bacterial communities from the herbicide use. The impacts of thiencarbazone-methyl·isoxaflutole and soil parameters on the diversity, structure and functions of soil bacterial communities were clarified, and the effects and potential mitigation mechanisms of nitrapyrin and modified attapulgite with bacterial function intervention on bacterial communities were explored through incubation and field experiments. The results showed that as thiencarbazone-methyl·isoxaflutole application increased, the stress on soil bacterial community structure and diversity also increased. The relative abundance of bacteria including Aridibacter and GP7 and functional annotations including "nitrate_reduction" were significantly negatively correlated with thiencarbazone-methyl·isoxaflutole residues in soils. The remarkable toxic effects on the Adhaeribacter bacteria were detected at the recommended dose of thiencarbazone-methyl·isoxaflutole application. The residue of isoxaflutole (one of the effective ingredients of thiencarbazone-methyl·isoxaflutole) directly and more strongly affected the diversity of soil bacterial communities than thiencarbazone-methyl. Increasing soil pH was recognised as an important factor in improving the diversity and structure of soil microflora based on the results of the Mantel test and canonical correspondence analysis. Supplemental use of nitrapyrin or modified attapulgite was found to increase soil pH, and further improve the expression of "manganese oxidation" function annotation. This contributed to the increased bacterial diversity (Shannon index). Therefore, the disturbance of soil microflora caused by thiencarbazone-methyl·isoxaflutole application can be mitigated by the use of nitrapyrin and modified attapulgite through raising soil pH.
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Affiliation(s)
- Yonglu Wang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fengsong Zhang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Xiaoyong Liao
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xiao Yang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Guixiang Zhang
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Liyun Zhang
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing, 102206, China
| | - Chaojun Wei
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing, 102206, China
| | - Pengge Shi
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing, 102206, China
| | - Jiongxin Wen
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Xiaorong Ju
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Can Xu
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Yang Liu
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Qiqihar, 161006, Heilongjiang Province, China
| | - Ying Lan
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Qiqihar, 161006, Heilongjiang Province, China
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10
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Jang Y, Sharavdorj K, Ahn Y, Cho J. Effects of Planting Density and Nitrogen Fertilization on the Growth of Forage Rice in Reclaimed and General Paddy Fields. PLANTS (BASEL, SWITZERLAND) 2023; 13:13. [PMID: 38202321 PMCID: PMC10780310 DOI: 10.3390/plants13010013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024]
Abstract
The purpose of this study is to identify the different effects exerted by planting density and nitrogen fertilization on high-salinity reclaimed paddy fields (RPF) and general paddy fields (GPFs), and to find the amount of fertilization and the planting density suitable for the growth of forage rice in each paddy field. Nitrogen fertilization with high-salt and low-salt soils, an untreated control plot, treatment with 200 kg/ha, 300 kg/ha, and 400 kg/ha, and planting densities of 30 cm × 10 cm and 30 cm × 16 cm, growth, and feed values were investigated. In both experimental locations, there was no significant change in the soil due to N treatment, but in the case of RPF, electrical conductivity (EC) decreased significantly from more than 5 dS/m to up to 2.87 dS/m during the yellow ripe stage due to the influence of floods and concentrated precipitation in the fields. In all soils, as both the amount of N treatment and the planting density increased, there was a proportional relationship in which the number of tillers and the dry weight also increased, with the occurrence of lodging also being increased. The dry weight, as expected, was 1.5 times higher at a planting distance of 10 cm, rather than 16 cm. In addition, in both locations, the N treatment led to an increase in the dry weight, but when N treatment reached 400 kg/ha (2.0), the dry weight decreased instead. Moreover, although there was no clear difference in feed value according to N treatment, in RPF, the neutral detergent fiber (NDF) was higher than 60%, the relative feed value (RFV) was less than 98, and the total digestible nutrient (TDN) was also low, confirming that the quality of rice was higher in GPF.
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Affiliation(s)
- Yeongmi Jang
- Department of Crop Science, College of Agricultural and Life Sciences, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (Y.J.); (K.S.)
| | - Khulan Sharavdorj
- Department of Crop Science, College of Agricultural and Life Sciences, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (Y.J.); (K.S.)
| | - Youngjik Ahn
- Department of Horticulture and Forestry, Pai Chai University, 155-40, Baejae-ro, Seo-gu, Daejeon 35345, Republic of Korea;
| | - Jinwoong Cho
- Department of Crop Science, College of Agricultural and Life Sciences, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (Y.J.); (K.S.)
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11
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Li Y, Muhammad R, Saba B, Xia H, Wang X, Wang J, Xia X, Cuncang J. Effect of co-application of straw and various nitrogen fertilizers on N 2O emission in acid soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 347:119045. [PMID: 37778069 DOI: 10.1016/j.jenvman.2023.119045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/07/2023] [Accepted: 09/17/2023] [Indexed: 10/03/2023]
Abstract
In order to explore the alteration of N transformation and N2O emissions in acid soil with the co-application of straw and different types of nitrogen (N) fertilizers, an incubation experiment was carried out for 40 days. There are totally five treatments in the study: (a) without straw and N fertilizer (N0), (b) straw alone application (SN0), (c) straw with NH4Cl (SN1), (d) straw with NaNO3 (SN2), and (e) straw with NH4NO3 (SN3). N2O emissions, soil physicochemical properties, and abundance/activity of ammonia-oxidizing archaea (AOA) were measured. The results showed that the combined application of straw and N enhanced N2O emissions, particularly, SN2 and SN3 treatments. Moreover, the soil pH was lower in co-application treatments and the average decreasing rate was 9.69%. Specially, the pH was lowest in the SN1 treatment. The results of correlation analysis indicated a markedly negative relationship between pH and N2O, as well as a negative relationship between pH and net mineralization rate. These findings suggest that pH alteration can affect the N transformation process in soil and thus influence N2O emissions. In addition, the dominant AOA at the genus level in the SN2 treatment was Nitrosopumilus, and Candidatus nitrosocosmicus in the SN3 treatment. The reshaped AOA structure can serve as additional evidence of the changes in the N transformation process. In conclusion, as the return of straw, the cumulation of N2O from arable acid soil depends on the form of N fertilizer. It is also important to consider how N fertilizer is applied to reduce the possibility of N being lost in the soil as gas.
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Affiliation(s)
- Yuxuan Li
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.
| | - Riaz Muhammad
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, PR China.
| | - Babar Saba
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.
| | - Hao Xia
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.
| | - Xiangling Wang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; The Key Laboratory of Oasis Ecoagriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang, 832000, PR China.
| | - JiYuan Wang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.
| | - Xiaoyang Xia
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.
| | - Jiang Cuncang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; The Key Laboratory of Oasis Ecoagriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang, 832000, PR China.
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12
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Li Y, Chen Y, Chen J, Shen C. Flavonoid metabolites in tea plant (Camellia sinensis) stress response: Insights from bibliometric analysis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 202:107934. [PMID: 37572493 DOI: 10.1016/j.plaphy.2023.107934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/21/2023] [Accepted: 08/02/2023] [Indexed: 08/14/2023]
Abstract
In the context of global climate change, tea plants are at risk from elevating environmental stress factors. Coping with this problem relies upon the understanding of tea plant stress response and its underlying mechanisms. Over the past two decades, research in this field has prospered with the contributions of scientists worldwide. Aiming in providing a comprehensive perspective of the research field related to tea plant stress response, we present a bibliometric analysis of the this area. Our results demonstrate the most studied stresses, global contribution, authorship and collaboration, and trending research topics. We highlight the importance of flavonoid metabolites in tea plant stress response, particularly their role in maintaining redox homeostasis, yield, and adjusting tea quality under stress conditions. Further research on the flavonoid response under various stress conditions can promote the development of cultivation measures, thereby improving stress resistance and tea quality.
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Affiliation(s)
- YunFei Li
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China; National Research Center of Engineering & Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, 410128, China
| | - YiQin Chen
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China; National Research Center of Engineering & Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, 410128, China
| | - JiaHao Chen
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China; National Research Center of Engineering & Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, 410128, China
| | - ChengWen Shen
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China; National Research Center of Engineering & Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, 410128, China; Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops, Ministry of Agriculture and Rural Affairs of China, Hunan Agricultural University, Changsha, 410128, China.
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13
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Li Y, Muhammad R, Saba B, Xia H, Wang X, Wang J, Jiang C. Can the co-application of biochar and different inorganic nitrogen fertilizers repress N 2O emissions in acidic soil? ENVIRONMENTAL RESEARCH 2023; 231:116217. [PMID: 37245574 DOI: 10.1016/j.envres.2023.116217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/15/2023] [Accepted: 05/21/2023] [Indexed: 05/30/2023]
Abstract
The sole application of nitrogen (N) fertilizer with lower N2O emission potential or combined with biochar may help for mitigating N2O production. However, how biochar applied with various inorganic N fertilizers affected N2O emission in acidic soil remains unclear. Thus, we examined N2O emission, soil N dynamics and relating nitrifiers (i.e., ammonia-oxidizing archaea, AOA) in acidic soil. The study contained three N fertilizers (including NH4Cl, NaNO3, NH4NO3) and two biochar application rates (i.e., 0% and 0.5%). The results indicated that the alone application of NH4Cl produced more N2O. Meanwhile, the co-application of biochar and N fertilizers enhanced N2O emission as well, especially in the combined treatment of biochar and NH4NO3. Soil pH was decreased with the application of various N fertilizers, especially with NH4Cl, and the average decrease rate was 9.6%. Meanwhile, correlation analysis showed a negative relationship between N2O and pH, dramatically, which might indicate that the alteration of pH was one factor relating to N2O emission. However, there was no difference between the same N addition treatments with or without biochar on pH. Interestingly, in the combined treatment of biochar and NH4NO3, the lowest net nitrification rate and net mineralization rate appeared during days 16-23. Meanwhile, the highest emission rate of N2O in the same treatment also appeared during days 16-23. The accordance might indicate that N transformation alteration was another factor relating to N2O emissions. In addition, compared to NH4NO3 alone application, co-applied with biochar had a lower content of Nitrososphaera-AOA, which was a main contributor to nitrification. The study emphasizes the importance of using a suitable form of N fertilizers and further indicates that two factors, namely alteration of pH and N transformation rate, are related to N2O emission. Moreover, in future studies, it is necessary to explore the soil N dynamics controlled by microorganisms.
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Affiliation(s)
- Yuxuan Li
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China
| | - Riaz Muhammad
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, PR China
| | - Babar Saba
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China
| | - Hao Xia
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China
| | - Xiangling Wang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; The Key Laboratory of Oasis Ecoagriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang, 832000, PR China
| | - JiYuan Wang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China
| | - Cuncang Jiang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; The Key Laboratory of Oasis Ecoagriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang, 832000, PR China.
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14
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Xie P, Huang K, Deng A, Mo P, Xiao F, Wu F, Xiao D, Wang Y. The diversity and abundance of bacterial and fungal communities in the rhizosphere of Cathaya argyrophylla are affected by soil physicochemical properties. Front Microbiol 2023; 14:1111087. [PMID: 37378294 PMCID: PMC10292655 DOI: 10.3389/fmicb.2023.1111087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 05/16/2023] [Indexed: 06/29/2023] Open
Abstract
Cathaya argyrophylla is an ancient Pinaceae species endemic to China that is listed on the IUCN Red List. Although C. argyrophylla is an ectomycorrhizal plant, the relationship between its rhizospheric soil microbial community and soil properties related to the natural habitat remains unknown. High-throughput sequencing of bacterial 16S rRNA genes and fungal ITS region sequences was used to survey the C. argyrophylla soil community at four natural spatially distributed points in Hunan Province, China, and functional profiles were predicted using PICRUSt2 and FUNGuild. The dominant bacterial phyla included Proteobacteria, Acidobacteria, Actinobacteria, and Chloroflexi, and the dominant genus was Acidothermus. The dominant fungal phyla were Basidiomycota and Ascomycota, while Russula was the dominant genus. Soil properties were the main factors leading to changes in rhizosphere soil bacterial and fungal communities, with nitrogen being the main driver of changes in soil microbial communities. The metabolic capacities of the microbial communities were predicted to identify differences in their functional profiles, including amino acid transport and metabolism, energy production and conversion, and the presence of fungi, including saprotrophs and symbiotrophs. These findings illuminate the soil microbial ecology of C. argyrophylla, and provide a scientific basis for screening rhizosphere microorganisms that are suitable for vegetation restoration and reconstruction for this important threatened species.
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Affiliation(s)
- Peng Xie
- College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde, Hunan, China
- College of Agriculture, Forestry and Technology, Hunan Applied Technology University, Changde, Hunan, China
| | - Kerui Huang
- College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde, Hunan, China
| | - Aihua Deng
- College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde, Hunan, China
| | - Ping Mo
- College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde, Hunan, China
| | - Fen Xiao
- Central South University of Forestry and Technology Changsha, Hunan, China
| | - Fei Wu
- Qingjie Mountain State Forest Farm, Chengbu, Hunan, China
| | - Dewei Xiao
- Chukou State-Owned Forest Farm, Zixing, Hunan, China
| | - Yun Wang
- College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde, Hunan, China
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15
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Wang Y, Niu G, Wang R, Rousk K, Li A, Hasi M, Wang C, Xue J, Yang G, Lü X, Jiang Y, Han X, Huang J. Enhanced foliar 15 N enrichment with increasing nitrogen addition rates: Role of plant species and nitrogen compounds. GLOBAL CHANGE BIOLOGY 2023; 29:1591-1605. [PMID: 36515451 DOI: 10.1111/gcb.16555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 05/28/2023]
Abstract
Determining the abundance of N isotope (δ15 N) in natural environments is a simple but powerful method for providing integrated information on the N cycling dynamics and status in an ecosystem under exogenous N inputs. However, whether the input of different N compounds could differently impact plant growth and their 15 N signatures remains unclear. Here, the response of 15 N signatures and growth of three dominant plants (Leymus chinensis, Carex duriuscula, and Thermopsis lanceolata) to the addition of three N compounds (NH4 HCO3 , urea, and NH4 NO3 ) at multiple N addition rates were assessed in a meadow steppe in Inner Mongolia. The three plants showed different initial foliar δ15 N values because of differences in their N acquisition strategies. Particularly, T. lanceolata (N2 -fixing species) showed significantly lower 15 N signatures than L. chinensis (associated with arbuscular mycorrhizal fungi [AMF]) and C. duriuscula (associated with AMF). Moreover, the foliar δ15 N of all three species increased with increasing N addition rates, with a sharp increase above an N addition rate of ~10 g N m-2 year-1 . Foliar δ15 N values were significantly higher when NH4 HCO3 and urea were added than when NH4 NO3 was added, suggesting that adding weakly acidifying N compounds could result in a more open N cycle. Overall, our results imply that assessing the N transformation processes in the context of increasing global N deposition necessitates the consideration of N deposition rates, forms of the deposited N compounds, and N utilization strategies of the co-existing plant species in the ecosystem.
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Affiliation(s)
- Yinliu Wang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Guoxiang Niu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Ruzhen Wang
- School of Life Sciences, Hebei University, Baoding, China
| | - Kathrin Rousk
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Ang Li
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
| | - Muqier Hasi
- College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
| | - Changhui Wang
- Grassland College, Shanxi Agriculture University, Taigu, China
| | - Jianguo Xue
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
| | - Guojiao Yang
- Erguna Forest-Steppe Ecotone Research Station, CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- College of Ecology and Environment, Hainan University, Haikou, China
| | - Xiaotao Lü
- Erguna Forest-Steppe Ecotone Research Station, CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Yong Jiang
- School of Life Sciences, Hebei University, Baoding, China
| | - Xingguo Han
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jianhui Huang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
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Han L, Zhao Z, Li J, Ma X, Zheng X, Yue H, Sun G, Lin Z, Guan S. Application of humic acid and hydroxyapatite in Cd-contaminated alkaline maize cropland: A field trial. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 859:160315. [PMID: 36403838 DOI: 10.1016/j.scitotenv.2022.160315] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/17/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Soil quality is critical to the quality and safety of agricultural products, and remediation of heavy metal contaminated soils is an urgent task to be implemented. This study applied hydroxyapatite (HAP) and humic acid (HA) as remediation materials to Cd-contaminated alkaline cropland. Data on soil pH, electrical conductivity (EC), cation exchange capacity (CEC), soil organic matter (SOM), diethylenetriamine pentaacetic acid (DTPA) extraction, and improved BCR sequential extraction were obtained for different periods. The joint application of HAP and HA enhanced the soil's buffering capacity. During the experiment, treatment groups CK, H1, H2, H3, and H4 showed changes in pH of 0.29, 0.28, 0.21, 0.24, and 0.32, respectively, and changes in the conductivity of 341.4, 183.0, 133.1, 104.6 and 320.2 μS/cm. Soil organic matter had a positive effect on soil's effective phosphorus content. HAP and HA both reduced the BCFgrain/soil of Cd for the maize, but the impact of HA was more substantial (20.19 % reduction compared to CK). HA increased the yield of maize by 44.20 %. The combination of HA and HAP was recommended.
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Affiliation(s)
- Liangwei Han
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Western China's Environmental Systems, Lanzhou 730000, PR China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, PR China
| | - Zhuanjun Zhao
- Key Laboratory of Mountain Environment Evolvement and Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, PR China.
| | - Jie Li
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Western China's Environmental Systems, Lanzhou 730000, PR China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, PR China
| | - Xiangbang Ma
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Western China's Environmental Systems, Lanzhou 730000, PR China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, PR China
| | - Xu Zheng
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Western China's Environmental Systems, Lanzhou 730000, PR China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, PR China
| | - Haoyu Yue
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Western China's Environmental Systems, Lanzhou 730000, PR China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, PR China
| | - Guohuai Sun
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Western China's Environmental Systems, Lanzhou 730000, PR China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, PR China
| | - Zhiyuan Lin
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Western China's Environmental Systems, Lanzhou 730000, PR China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, PR China
| | - Shuqi Guan
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; Key Laboratory of Western China's Environmental Systems, Lanzhou 730000, PR China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, PR China
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17
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Bao YQ, Zhang MT, Feng BY, Jieensi W, Xu Y, Xu LR, Han YY, Chen YP. Construction, Characterization, and Application of an Ammonium Transporter (AmtB) Deletion Mutant of the Nitrogen-Fixing Bacterium Kosakonia radicincitans GXGL-4A in Cucumis sativus L. Seedlings. Curr Microbiol 2023; 80:58. [PMID: 36588112 DOI: 10.1007/s00284-022-03160-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 12/19/2022] [Indexed: 01/03/2023]
Abstract
Nitrogen is an important factor affecting crop yield, but excessive use of chemical nitrogen fertilizer has caused decline in nitrogen utilization and soil and water pollution. Reducing the utilization of chemical nitrogen fertilizers by biological nitrogen fixation (BNF) is feasible for green production of crops. However, there are few reports on how to have more ammonium produced by nitrogen-fixing bacteria (NFB) flow outside the cell. In the present study, the amtB gene encoding an ammonium transporter (AmtB) in the genome of NFB strain Kosakonia radicincitans GXGL-4A was deleted and the △amtB mutant was characterized. The results showed that deletion of the amtB gene had no influence on the growth of bacterial cells. The extracellular ammonium nitrogen (NH4+) content of the △amtB mutant under nitrogen-free culture conditions was significantly higher than that of the wild-type strain GXGL-4A (WT-GXGL-4A), suggesting disruption of NH4+ transport. Meanwhile, the plant growth-promoting effect in cucumber seedlings was visualized after fertilization using cells of the △amtB mutant. NFB fertilization continuously increased the cucumber rhizosphere soil pH. The nitrate nitrogen (NO3-) content in soil in the △amtB treatment group was significantly higher than that in the WT-GXGL-4A treatment group in the short term but there was no difference in soil NH4+ contents between groups. Soil enzymatic activities varied during a 45-day assessment period, indicating that △amtB fertilization influenced soil nitrogen cycling in the cucumber rhizosphere. The results will provide a solid foundation for developing the NFB GXGL-4A into an efficient biofertilizer agent.
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Affiliation(s)
- Yu-Qing Bao
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Meng-Ting Zhang
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Bao-Yun Feng
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wulale Jieensi
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yu Xu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Lu-Rong Xu
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ying-Ying Han
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yun-Peng Chen
- Department of Resources and Environment, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
- Ministry of Science and Technology, Shanghai Yangtze River Delta Eco-Environmental Change and Research Station, Shanghai, 200240, China.
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18
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Xiao C, Li L, Luo B, Liu Y, Zeng Q, Peng L, Luo S. Different effects of the application of urea combined with nitrification inhibitor on cadmium activity in the rice-rape rotation system. ENVIRONMENTAL RESEARCH 2022; 214:113800. [PMID: 35787366 DOI: 10.1016/j.envres.2022.113800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/23/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) is one of the most harmful and widespread pollutants in agricultural soil, where it is readily taken up by plants and threatens human health through the food chain. Nitrification inhibitors (NIs) are usually used to reduce nitrogen (N) loss in soil and increase the nitrogen use efficiency of crops. However, information regarding the Cd transfer in soil and crops system with the application of urea combined with NIs is limited. Especially, the influences of NIs on Cd availability in the rice-rape rotation are unclear. Here, we studied the pH, N speciation, and Cd activity in soils, as well as Cd accumulation in rice and rapeseed tissues that resulted after the application of dicyandiamide (DCD) and 3,4-dimethylpyrazole phosphate (DMPP) under alternating redox conditions. Rice and rape experiments appeared to represent an opposite phenomenon in the treatments of urea + NIs. Addition of NIs increased the pH of paddy soil, but decreased the pH of rapeseed soil. The treatments of urea + DCD and urea + DMPP0.5% produced a significantly lower concentration of extractable Cd in the paddy soil, and reduced the accumulation of Cd in brown rice. For rapeseed, the urea + NI treatments enhanced the Cd activity and increased the accumulation of Cd in rapeseed. It is proposed that NIs could be used to regulate N transformation in agricultural soils and inhibited Cd uptake by rice in urea fertilization. Moreover, the application of NIs combined with urea would potentially favor phytoextraction of Cd by rape, which is a ideal candidate for phytoremediation in Cd-contaminated soil.
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Affiliation(s)
- Chenfeng Xiao
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China.
| | - Li Li
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Bihao Luo
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Yuling Liu
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Qingru Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Liang Peng
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Si Luo
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China.
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Li J, Liu X, Zhu C, Luo L, Chen Z, Jin S, Geng B. Influences of human waste-based ectopic fermentation bed fillers on the soil properties and growth of Chinese pakchoi. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:69903-69917. [PMID: 35579832 DOI: 10.1007/s11356-022-20636-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/01/2022] [Indexed: 06/15/2023]
Abstract
The reuse of human wastes as biofertilizer resources offers a new option for meeting the growing demand for food and addressing poor soil productivity. Feces and black water are ubiquitous human wastes that usually require proper treatment, such as composting and anaerobic digestion, to remove potentially harmful substances before they can be applied as fertilizers. As an effective treatment technology for livestock farming wastes, the ectopic fermentation bed system (EFS) provides a new means of treating human waste and producing organic fertilizer from decomposed filler. Therefore, the objective of this study was to evaluate and compare the nutrient content and fertilizer potential of decomposed fillers obtained after EFS treatment of human feces and black water under different application conditions. The results showed that the application of fillers increased the yield of pakchoi by 3.60⁓29.32% and nutrient uptake by 8.09⁓83.45% compared to the CK, which could effectively promote the growth of pakchoi. This approach also improved the quality of pakchoi and enhanced soil fertility, and differences were observed in the effects of different kinds and application amounts of fillers. Soil EC was the soil property that had the greatest effect on the growth characteristics of pakchoi in this study. These findings help to better clarify the agronomic value of human wastes, but the effects of long-term filler application need to be further explored.
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Affiliation(s)
- Jiabin Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Xue Liu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Changxiong Zhu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Liangguo Luo
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Zhuobo Chen
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Shan Jin
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Bing Geng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China.
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Fan D, Wang X, Song D, Shi Y, Chen Y, Wang J, Cao B, Zou G, He W. Optimizing nitrogen management to mitigate gaseous losses and improve net benefits of an open-field Chinese cabbage system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 318:115583. [PMID: 35753128 DOI: 10.1016/j.jenvman.2022.115583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 06/17/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
The excessive and inappropriate application of nitrogen (N) fertilizer in open vegetable fields is a major anthropogenic source of gaseous N losses including nitrous oxide (N2O) and ammonia (NH3) emissions in China. A 2-yr Chinese cabbage (Brassica pekinensis L.) experiment was carried out to explore the impacts of optimized N management (reduced N application rate, controlled-release urea [CRF] and nitrification inhibitor [NI]) on cabbage yield, soil inorganic N, and N2O and NH3 emissions, and to assess their economic benefits by a cost-benefit analysis. Six treatments including i) no N fertilizer (CK), ii) conventional urea fertilizer at 400 kg N ha-1 based on farmers' practices (CN), iii) conventional urea at 320 kg N ha-1 (RN), iv) conventional urea (320 kg N ha-1) with the addition of NI (RN + NI), v) CRF at 320 kg N ha-1 (CR) and vi) CRF (320 kg N ha-1) with the addition of NI (CR + NI) were implemented in an open Chinese cabbage field. No significant differences were found in the cabbage yields and soil NH4+-N contents under different N fertilization treatments. Only CR + NI treatment had significantly lower soil NO3--N contents than CN by 17.6%-34.6% at the early growing stages of cabbage in both years. Compared with CN, the N2O emissions were significantly decreased by 8.61%, 34.4%, 37.8% and 46.6% under RN, RN + NI, CR and CR + NI, respectively, indicating that CR + NI favors N2O abatement especially when NH3 has been suppressed by other 4 R practices. Meanwhile, the NH3 volatilization was 20.6% higher under RN + NI and 30.8% and 17.3% lower under CR and CR + NI compared to CN, respectively, which implied that CR was the most effective treatment in reducing the NH3 volatilization and total gaseous N loss in high NH3-N loss scenarios. Moreover, the net benefit of RN decreased by $945 USD ha-1 and those of RN + NI, CR and CR + NI treatments increased by $855, $930 and $1004 USD ha-1 compared to CN, respectively. This study recommends CR + NI as the optimal N fertilizer management for the sustainable production of vegetables with the lowest environmental risks and the greatest economic benefits.
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Affiliation(s)
- Daijia Fan
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Xuexia Wang
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Daping Song
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Yaoyao Shi
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Yanhua Chen
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Jiachen Wang
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Bing Cao
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Guoyuan Zou
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Wentian He
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
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21
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Liu L, Shen RL, Zhao ZQ, Ding LJ, Cui HL, Li G, Yang YP, Duan GL, Zhu YG. How different nitrogen fertilizers affect arsenic mobility in paddy soil after straw incorporation? JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129135. [PMID: 35594672 DOI: 10.1016/j.jhazmat.2022.129135] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/07/2022] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
In straw return fields, nitrogen-fertilizers are added to mitigate microbial competition for nitrogen with plants. However, in arsenic (As)-contaminated paddy fields, the specific effects of different nitrogen fertilizers on As mobility after straw incorporation and the interactions among iron(Fe)/carbon(C)/nitrogen(N)/As are not well understood. In the reported microcosm experiment we monitored As-mobility as a function of different dosages of KNO3, NH4Cl and rice straw incorporation. Addition of both KNO3 and NH4Cl significantly inhibited the As mobilization induced by straw incorporation. Following the KNO3 addition, the As concentration in porewater dropped by 51-66% after 2 days of the incubation by restraining Fe reduction and enhancing Fe oxidation. High-dose NH4Cl addition reduced As in porewater by 22-43% throughout the incubation by decreasing porewater pH. High-throughput sequencing results demonstrated that KNO3 addition enriches both the denitrifying and Fe-oxidizing bacteria, while diminishing Fe-reducing bacteria; NH4Cl addition has the opposite effect on Fe-reducing bacteria. Network analysis revealed that As and Fe concentrations in porewater were positively correlated with the abundance of denitrifying and Fe-reducing bacteria. This study broadens our insight into the As biogeochemistry associated with the N/C/Fe balance in soil, which are of great significance for agronomic management and mitigation the risk of As-contaminated paddy fields.
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Affiliation(s)
- Lin Liu
- State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shanxi 712100, China
| | - Rui-Lin Shen
- State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Land Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
| | - Zhong-Qiu Zhao
- College of Land Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
| | - Long-Jun Ding
- State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hui-Ling Cui
- State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gang Li
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Ping Yang
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China
| | - Gui-Lan Duan
- State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Yong-Guan Zhu
- State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
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22
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Qiu Q, Mgelwa AS, Jin S, Hu Y. Nitrogen-Induced Changes in Soil Environmental Factors Are More Important Than Nitrification and Denitrification Gene Abundance in Regulating N 2O Emissions in Subtropical Forest Soils. FRONTIERS IN PLANT SCIENCE 2022; 13:950367. [PMID: 35903223 PMCID: PMC9315429 DOI: 10.3389/fpls.2022.950367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
Subtropical regions are currently experiencing a dramatic increase in nitrogen (N) deposition; however, the contributions of nitrification and denitrification processes to soil N2O emissions and the underlying mechanisms under increasing N deposition remain unclear. Therefore, a 15N-tracing laboratory experiment with four N application rates (0, 12.5, 25, and 50 μg 15N g-1 soil) was conducted to investigate the response of nitrification- and denitrification-derived N2O to N additions in an evergreen broad-leaved forest (BF) and a Pinus forest (PF) in the Wuyi Mountains in southeastern China. Moreover, the abundance of functional genes related to nitrification (amoA), denitrification (nirK, nirS, and nosZ), and soil properties were measured to clarify the underlying mechanisms. Results showed that nitrification-derived N2O emissions were generally decreased with increasing N input. However, denitrification-derived N2O emissions were a non-linear response to N additions, with maximum N2O emissions at the middle N application rate. Denitrification-derived N2O was the dominant pathway of N2O production, accounting for 64 to 100% of the total N2O fluxes. Soil NH4 +-N content and pH were the predominant factors in regulating nitrification-derived N2O emissions in BF and PF, respectively. Soil pH and the nirS abundance contributed the most to the variations of denitrification-derived N2O emissions in BF and PF, respectively. Our results suggest that N application has the potential to increase the contribution of denitrification to N2O production in subtropical forest soils. Changes in soil chemical properties induced by N addition are more important than the abundance of nitrification and denitrification functional genes in regulating soil nitrification- and denitrification-derived N2O emissions.
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Affiliation(s)
- Qingyan Qiu
- Forest Ecology and Stable Isotope Center, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Abubakari Said Mgelwa
- College of Natural Resources Management and Tourism, Mwalimu Julius K. Nyerere University of Agriculture and Technology, Musoma, Tanzania
| | - Shaofei Jin
- Department of Geography, Minjiang University, Fuzhou, China
| | - Yalin Hu
- Forest Ecology and Stable Isotope Center, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
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23
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Abstract
Tea (Camellia sinensis L.) is the most widely consumed beverage in the world. It is mostly grown in the tropics with a heavy dependence on mineral nitrogen (N) fertilisers to maintain high yields while minimising the areas under cultivation. However, N is often applied in excess of crop requirements, resulting in substantial adverse environmental impacts. We conducted a systematic literature review, synthesising the findings from 48 studies to assess the impacts of excessive N application on soil health, and identify sustainable, alternative forms of N management. High N applications lead to soil acidification, N leaching to surface and groundwater, and the emission of greenhouse gases including nitrous oxide (N2O). We identified a range of alternative N management practices, the use of organic fertilisers, a mixture of organic and inorganic fertilisers, controlled release fertilisers, nitrification inhibitors and soil amendments including biochar. While many practices result in reduced N loading or mitigate some adverse impacts, major trade-offs include lower yields, and in some instances increased N2O emissions. Practices are also frequently trialled in isolation, meaning there may be a missed opportunity from assessing synergistic effects. Moreover, adoption rates of alternatives are low due to a lack of knowledge amongst farmers, and/or financial barriers. The use of site-specific management practices which incorporate local factors (for example climate, tea variety, irrigation requirements, site slope, and fertiliser type) are therefore recommended to improve sustainable N management practices in the long term.
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Huang S, Li Z, Yu J, Feng J, Hou H, Chi R. Vertical distribution and occurrence state of the residual leaching agent (ammonium sulfate) in the weathered crust elution-deposited rare earth ore. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 299:113642. [PMID: 34467858 DOI: 10.1016/j.jenvman.2021.113642] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/17/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Weathered crust elution-deposited rare earth ore (WCE-DREO) are rich in middle and heavy rare earth, and ammonium sulfate ((NH4)2SO4) was often used as leaching agent to leach rare earths by in-situ leaching method. However, much of (NH4)2SO4 would remained in the ore body during the leaching process, and release of it would cause seriously environmental pollution after the mine closure. To efficiently remove it, the rare earth ore properties and vertical distribution and occurrence state of the residual leaching agent at mine roof (GP1), mine waist (GP2), and mine foot (GP3) with different depth were investigated and efficient elution method was proposed in this study. Results showed that the rare earth ore mainly consist of quartz, clay minerals (halloysite, illite, and kaolinite) and rock-forming minerals, and pH and moisture contents of them were ranged from 4.0 to 5.0 and 10-20%, respectively. Residual agent was mainly enriched in the middle and deep layer of the ore body with the main form of ammonium nitrogen (NH4+-N), and content of it at the three sites followed the order of GP1>GP3>GP2, which was related to the content of the clay minerals and the moisture. Occurrence state experimental results illustrated that about 95% of the NH4+-N existed as water-soluble ammonium (WS-AN) and adsorbable ammonium (AS-AN), and 5% of it existed as fixed ammonium (FX-AN), and concentration ratio of them was in order: WS-AN > AS-AN ≫ FX-AN. Based on the results above, MgCl2 solution was used as an eluent to remove the leaching agent from the ore, and results showed that higher than 90% of residual ammonium could be removed from the ore by it. This study provided a valuable guidance for the residual leaching agent removal from the WCE-DREO body.
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Affiliation(s)
- Shuxin Huang
- Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China
| | - Zhanhui Li
- Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China
| | - Junxia Yu
- Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
| | - Jian Feng
- Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China
| | - Haobo Hou
- Wuhan Univ. (Zhaoqing) GD, HK and MO Environ Technol Research INST, Zhaoqing, Guangdong, China; School of Resource and Environmental Science, Wuhan University, Wuhan, 430072, Hubei, China
| | - Ruan Chi
- Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China
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Long H, Jiang Y, Li C, Liao S, Shi S, Huang C, Zhao S, Li X, Liao Y. Effect of urea feeding on transforming and migrating soil fluorine in a tea garden of hilly region. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:5087-5098. [PMID: 33913082 DOI: 10.1007/s10653-021-00949-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
The hilly region of western Sichuan is famous for producing Mengding-mountain tea in China. However, it is very easy to enrich fluorine (F) in tea, which recently raised people's concern on fluorosis. In this study, we simulated the local special climate conditions, especially the natural precipitation through column leaching experiment to investigate the effect of fertilization on F desorption from soil. The results suggested different fertilizers could greatly affect desorption of F from soil, but only urea (CO(NH2)2) could significantly and continuously promote the dissolution of F from soil. Furthermore, to reveal the effect of CO(NH2)2 on migration of F from soil to tea, field plots experiment in a tea garden was carried out. The results showed that CO(NH2)2 promoted soil acidification continuously, resulting in the increase of dissolved F and Al content in soil, which were migrated to tea in the form of F-Al complex. Therefore, the key to reducing the F content in tea is to alleviate soil acidification and reduce F-Al complex content in soil. Most importantly, with CO(NH2)2 addition, the contents of F in tea increased significantly from first bud to fifth bud in comparison with those of without CO(NH2)2, especially in 2016, indicating the accelerating and prolonging enrichment of F in tea by adding CO(NH2)2. This study would have important guidance for controlling F mitigation from soil to tea by managing fertilizers application and anthropogenic activities.
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Affiliation(s)
- Hua Long
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
- Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education of China, Chengdu, 610066, People's Republic of China
| | - Yamei Jiang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
- Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education of China, Chengdu, 610066, People's Republic of China
| | - Chaoqun Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
- Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education of China, Chengdu, 610066, People's Republic of China
| | - Shuling Liao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
- Engineering Research Center for the Development of Farmland Ecosystem Service Functions, Sichuan Province, Chengdu, 610068, People's Republic of China
| | - Shuyu Shi
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
- Engineering Research Center for the Development of Farmland Ecosystem Service Functions, Sichuan Province, Chengdu, 610068, People's Republic of China
| | - Chunping Huang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
- Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education of China, Chengdu, 610066, People's Republic of China
| | - Shilin Zhao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China
- Engineering Research Center for the Development of Farmland Ecosystem Service Functions, Sichuan Province, Chengdu, 610068, People's Republic of China
| | - Xiaoting Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China.
- Engineering Research Center for the Development of Farmland Ecosystem Service Functions, Sichuan Province, Chengdu, 610068, People's Republic of China.
| | - Yang Liao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, People's Republic of China.
- Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education of China, Chengdu, 610066, People's Republic of China.
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