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Katsara A, Zkeri E, Aloupi M, Pappa FK, Matsoukas C, Stasinakis AS. Cultivation of the macrophyte Lemna minor and the microalgae Chlorella sorokiniana in thermal mineral waters: Biomass characteristics, radioisotopes and heavy metals content. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 349:123881. [PMID: 38580063 DOI: 10.1016/j.envpol.2024.123881] [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: 01/08/2024] [Revised: 03/14/2024] [Accepted: 03/25/2024] [Indexed: 04/07/2024]
Abstract
Microalgae and macrophytes are commonly used as human and animal food supplements. We examined the cultivation of the microalgae Chlorella sorokiniana and the duckweed Lemna minor in thermal waters under batch and sequencing batch conditions and we characterized the produced biomass for the presence of essential nutrients as well as for heavy metals and radioisotope content. The highest specific growth rate for the microalgae was observed when 5 or 15 mg/L N were supplemented while the optimal conditions for Lemna minor were observed in the co-presence of 5 mg/L N and 1.7 mg/L P. Lemna minor presented higher concentrations of proteins and lipids comparing to the studied microalgae. Both organisms contained high amounts of lutein (up to 1378 mg/kg for Lemna minor) and chlorophyll (up to 1518 mg/kg for Lemna minor) while β-carotene and tocopherols were found at lower concentrations, not exceeding a few tens of mg/kg. The heavy metal content varied between the two species. Lemna minor accumulated more Cd, Cu, K, Mn, Na, Ni, and Zn whereas Al, Ca and Mg were higher in Chlorella sorokiniana. Both organisms could be a significant source of essential metals but the occasional exceedance of the statutory levels of toxic metals in food products raises concern for potential risk to either humans or animals. Application of gamma-spectroscopy to quantify the effective dose to humans from 228Ra, 226Ra and 40K showed that Chlorella sorokiniana was well under the radiological limits while the collected mass of Lemna minor was too small for radiological measurements with confidence.
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Affiliation(s)
- Alexandra Katsara
- Water and Air Quality Laboratory, Department of Environment, University of the Aegean, University Hill, Mytilene, 81100, Greece
| | - Eirini Zkeri
- Water and Air Quality Laboratory, Department of Environment, University of the Aegean, University Hill, Mytilene, 81100, Greece
| | - Maria Aloupi
- Water and Air Quality Laboratory, Department of Environment, University of the Aegean, University Hill, Mytilene, 81100, Greece
| | - Filothei K Pappa
- Water and Air Quality Laboratory, Department of Environment, University of the Aegean, University Hill, Mytilene, 81100, Greece
| | - Christos Matsoukas
- Water and Air Quality Laboratory, Department of Environment, University of the Aegean, University Hill, Mytilene, 81100, Greece
| | - Athanasios S Stasinakis
- Water and Air Quality Laboratory, Department of Environment, University of the Aegean, University Hill, Mytilene, 81100, Greece.
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Mirón-Mérida VA, Soria-Hernández C, Richards-Chávez A, Ochoa-García JC, Rodríguez-López JL, Chuck-Hernández C. The Effect of Ultrasound on the Extraction and Functionality of Proteins from Duckweed ( Lemna minor). Molecules 2024; 29:1122. [PMID: 38474634 DOI: 10.3390/molecules29051122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/17/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
The inclusion of protein in the regular human diet is important for the prevention of several chronic diseases. In the search for novel alternative protein sources, plant-based proteins are widely explored from a sustainable and ecological point of view. Duckweed (Lemna minor), also known as water lentil, is an aquatic plant with potential applications for human consumption due to its protein content and carbohydrate contents. Among all the conventional and novel protein extraction methods, the utilization of ultrasound has attracted the attention of scientists because of its effects on improving protein extraction and its functionalities. In this work, a Box-Behnken experimental design was proposed to optimize the alkaline extraction of protein from duckweed. In addition, an exploration of the effects of ultrasound on the morphological, structural, and functional properties of the extracted protein was also addressed. The optimal extraction parameters were a pH of 11.5 and an ultrasound amplitude and processing time of 60% and 20 min, respectively. These process conditions doubled the protein content extracted in comparison to the value from the initial duckweed sample. Furthermore, the application of ultrasound during the extraction of protein generated changes in the FTIR spectra, color, and structure of the duckweed protein, which resulted in improvements in its solubility, emulsifying properties, and foaming capacity.
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Affiliation(s)
- Vicente Antonio Mirón-Mérida
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Colonia Tecnológico, Monterrey 64700, Mexico
| | - Cintya Soria-Hernández
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Colonia Tecnológico, Monterrey 64700, Mexico
| | - Alejandro Richards-Chávez
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Colonia Tecnológico, Monterrey 64700, Mexico
| | - Juan Carlos Ochoa-García
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Colonia Tecnológico, Monterrey 64700, Mexico
| | - Jorge Luis Rodríguez-López
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Colonia Tecnológico, Monterrey 64700, Mexico
| | - Cristina Chuck-Hernández
- Instituto para la Investigación en Obesidad, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501, Sur Tecnológico, Monterrey 64849, Mexico
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Hu Z, Fang Y, Yi Z, Tian X, Li J, Jin Y, He K, Liu P, Du A, Huang Y, Zhao H. Determining the nutritional value and antioxidant capacity of duckweed (Wolffia arrhiza) under artificial conditions. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Radulović O, Stanković S, Stanojević O, Vujčić Z, Dojnov B, Trifunović-Momčilov M, Marković M. Antioxidative Responses of Duckweed ( Lemna minor L.) to Phenol and Rhizosphere-Associated Bacterial Strain Hafnia paralvei C32-106/3. Antioxidants (Basel) 2021; 10:antiox10111719. [PMID: 34829590 PMCID: PMC8615135 DOI: 10.3390/antiox10111719] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/14/2021] [Accepted: 10/26/2021] [Indexed: 11/23/2022] Open
Abstract
Duckweed (L. minor) is a cosmopolitan aquatic plant of simplified morphology and rapid vegetative reproduction. In this study, an H. paralvei bacterial strain and its influence on the antioxidative response of the duckweeds to phenol, a recalcitrant environmental pollutant, were investigated. Sterile duckweed cultures were inoculated with H. paralvei in vitro and cultivated in the presence or absence of phenol (500 mg L−1), in order to investigate bacterial effects on plant oxidative stress during 5 days. Total soluble proteins, guaiacol peroxidase expression, concentration of hydrogen peroxide and malondialdehyde as well as the total ascorbic acid of the plants were monitored. Moreover, bacterial production of indole-3-acetic acid (IAA) was measured in order to investigate H. paralvei’s influence on plant growth. In general, the addition of phenol elevated all biochemical parameters in L. minor except AsA and total soluble proteins. Phenol as well as bacteria influenced the expression of guaiacol peroxidase. Different isoforms were associated with phenol compared to isoforms expressed in phenol-free medium. Considering that duckweeds showed increased antioxidative parameters in the presence of phenol, it can be assumed that the measured parameters might be involved in the plant’s defense system. H. paralvei is an IAA producer and its presence in the rhizosphere of duckweeds decreased the oxidative stress of the plants, which can be taken as evidence that this bacterial strain acts protectively on the plants during phenol exposure.
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Affiliation(s)
- Olga Radulović
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”, National Institute of the Republic of Serbia, University of Belgrade, 142 Bulevar Despota Stefana, 11060 Belgrade, Serbia; (M.T.-M.); (M.M.)
- Correspondence:
| | - Slaviša Stanković
- Faculty of Biology, University of Belgrade, 16 Studentski Trg, 11000 Belgrade, Serbia; (S.S.); (O.S.)
| | - Olja Stanojević
- Faculty of Biology, University of Belgrade, 16 Studentski Trg, 11000 Belgrade, Serbia; (S.S.); (O.S.)
| | - Zoran Vujčić
- Department of Biochemistry, Faculty of Chemistry, University of Belgrade, 12-16 Studentski Trg, 11000 Belgrade, Serbia;
| | - Biljana Dojnov
- Department of Chemistry, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, 12 Njegoševa, 11000 Belgrade, Serbia;
| | - Milana Trifunović-Momčilov
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”, National Institute of the Republic of Serbia, University of Belgrade, 142 Bulevar Despota Stefana, 11060 Belgrade, Serbia; (M.T.-M.); (M.M.)
| | - Marija Marković
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”, National Institute of the Republic of Serbia, University of Belgrade, 142 Bulevar Despota Stefana, 11060 Belgrade, Serbia; (M.T.-M.); (M.M.)
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Petersen F, Demann J, Restemeyer D, Ulbrich A, Olfs HW, Westendarp H, Appenroth KJ. Influence of the Nitrate-N to Ammonium-N Ratio on Relative Growth Rate and Crude Protein Content in the Duckweeds Lemna minor and Wolffiella hyalina. PLANTS (BASEL, SWITZERLAND) 2021; 10:1741. [PMID: 34451786 PMCID: PMC8399352 DOI: 10.3390/plants10081741] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 08/09/2021] [Accepted: 08/19/2021] [Indexed: 11/25/2022]
Abstract
In order to produce protein-rich duckweed for human and animal consumption, a stable cultivation process, including an optimal nutrient supply for each species, must be implemented. Modified nutrient media, based on the N-medium for duckweed cultivation, were tested on the relative growth rate (RGR) and crude protein content (CPC) of Lemna minor and Wolffiella hyalina, as well as the decrease of nitrate-N and ammonium-N in the media. Five different nitrate-N to ammonium-N molar ratios were diluted to 10% and 50% of the original N-medium concentration. The media mainly consisted of agricultural fertilizers. A ratio of 75% nitrate-N and 25% ammonium-N, with a dilution of 50%, yielded the best results for both species. Based on the dry weight (DW), L. minor achieved a RGR of 0.23 ± 0.009 d-1 and a CPC of 37.8 ± 0.42%, while W. hyalina's maximum RGR was 0.22 ± 0.017 d-1, with a CPC of 43.9 ± 0.34%. The relative protein yield per week and m2 was highest at this ratio and dilution, as well as the ammonium-N decrease in the corresponding medium. These results could be implemented in duckweed research and applications if a high protein content or protein yield is the aim.
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Affiliation(s)
- Finn Petersen
- Faculty of Agricultural Sciences and Landscape Architecture, University of Applied Sciences Osnabrück, Am Krümpel 31, 49090 Osnabrück, Germany; (J.D.); (D.R.); (A.U.); (H.-W.O.); (H.W.)
| | - Johannes Demann
- Faculty of Agricultural Sciences and Landscape Architecture, University of Applied Sciences Osnabrück, Am Krümpel 31, 49090 Osnabrück, Germany; (J.D.); (D.R.); (A.U.); (H.-W.O.); (H.W.)
| | - Dina Restemeyer
- Faculty of Agricultural Sciences and Landscape Architecture, University of Applied Sciences Osnabrück, Am Krümpel 31, 49090 Osnabrück, Germany; (J.D.); (D.R.); (A.U.); (H.-W.O.); (H.W.)
| | - Andreas Ulbrich
- Faculty of Agricultural Sciences and Landscape Architecture, University of Applied Sciences Osnabrück, Am Krümpel 31, 49090 Osnabrück, Germany; (J.D.); (D.R.); (A.U.); (H.-W.O.); (H.W.)
| | - Hans-Werner Olfs
- Faculty of Agricultural Sciences and Landscape Architecture, University of Applied Sciences Osnabrück, Am Krümpel 31, 49090 Osnabrück, Germany; (J.D.); (D.R.); (A.U.); (H.-W.O.); (H.W.)
| | - Heiner Westendarp
- Faculty of Agricultural Sciences and Landscape Architecture, University of Applied Sciences Osnabrück, Am Krümpel 31, 49090 Osnabrück, Germany; (J.D.); (D.R.); (A.U.); (H.-W.O.); (H.W.)
| | - Klaus-Jürgen Appenroth
- Matthias-Schleiden-Institute-Plant Physiology, University of Jena, Dornburger Str. 159, 07743 Jena, Germany;
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Agronomic and Environmental Performance of Lemnaminor Cultivated on Agricultural Wastewater Streams—A Practical Approach. SUSTAINABILITY 2021. [DOI: 10.3390/su13031570] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This study investigated the potential of Lemna minor to valorise agricultural wastewater in protein-rich feed material in order to meet the growing demand for animal feed protein and reduce the excess of nutrients in certain European regions. For this purpose, three pilot-scale systems were monitored for 175 days under outdoor conditions in Flanders. The systems were fed with the effluent of aquaculture (pikeperch production—PP), a mixture of diluted pig manure wastewater (PM), and a synthetic medium (SM). PM showed the highest productivity (6.1 ± 2.5 g DW m−2 d−1) and N uptake (327 ± 107 mg N m−2 d−1). PP yielded a similar productivity and both wastewaters resulted in higher productivities than SM. Furthermore, all media showed similar P uptake rates (65–70 P m−2 d−1). Finally, duckweed had a beneficial amino acid composition for humans (essential amino acid index = 1.1), broilers and pigs. This study also showed that the growing medium had more influence on the productivity of duckweed than on its amino acid composition or protein content, with the latter being only slightly affected by the different media studied. Overall, these results demonstrate that duckweed can effectively remove nutrients from agriculture wastewaters while producing quality protein.
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Stewart JJ, Adams WW, Escobar CM, López-Pozo M, Demmig-Adams B. Growth and Essential Carotenoid Micronutrients in Lemna gibba as a Function of Growth Light Intensity. FRONTIERS IN PLANT SCIENCE 2020; 11:480. [PMID: 32457770 PMCID: PMC7221200 DOI: 10.3389/fpls.2020.00480] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 03/31/2020] [Indexed: 05/30/2023]
Abstract
Duckweed is a promising food crop with multiple benefits for space applications. Fresh duckweed could deliver synergistically acting essential antioxidant nutrients to a crew - but only if growth conditions provide the plant with the right cues to trigger antioxidant formation. We grew Lemna gibba under continuous growth light ranging from low to very high intensities (photosynthetic photon flux densities = PPFDs) in order to investigate the effect on plant growth, photosynthesis, and level of carotenoid antioxidants that are essential human micronutrients. Lemna gibba achieved remarkably high growth rates under modest growth PPFD by virtue of superior light absorption resulting from minimal self-shading and high chlorophyll levels. Conversely, L. gibba's growth rate remained high even under very high growth PPFDs. This notable ability of L. gibba to avoid inactivation of photosynthesis and diminished growth under very high growth PPFDs resulted from a combination of downregulation of chlorophyll synthesis and increased biochemical photoprotection that limited a build-up of excessive excitation energy. This biochemical photoprotection included accumulation of zeaxanthin (an essential human micronutrient) and high levels of zeaxanthin-catalyzed thermal energy dissipation of excess excitation. Compared to the light levels needed to saturate L. gibba photosynthesis and growth, higher light levels were thus required for strong induction of the essential antioxidant zeaxanthin. These results indicate a need for design of light protocols that achieve simultaneous optimization of plant yield, nutritional quality, and light-use efficiency to circumvent the fact that the light requirement to saturate plant growth is lower than that for production of high zeaxanthin levels. How this trade-off between light-use efficiency of growth and nutritional quality might be minimized or circumvented to co-optimize all desired features is discussed.
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Affiliation(s)
- Jared J. Stewart
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, United States
| | - William W. Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, United States
| | - Christine M. Escobar
- Aerospace Engineering Sciences, University of Colorado, Boulder, CO, United States
- Space Lab Technologies, LLC, Boulder, CO, United States
| | - Marina López-Pozo
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, United States
| | - Barbara Demmig-Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, United States
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Wang X, Cui W, Hu W, Feng C. Abscisic acid-enhanced starch accumulation of bioenergy crop duckweed ( Spirodela polyrrhiza). RSC Adv 2020; 10:10394-10401. [PMID: 35492951 PMCID: PMC9050358 DOI: 10.1039/d0ra00269k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 02/24/2020] [Indexed: 12/03/2022] Open
Abstract
To meet the increasing energy consumption around the world and fight global climate change, there is an urgent need to explore renewable energy crops to replace the traditional energy sources. Duckweed (Spirodela polyrrhiza) is widely distributed in the world and has high starch and low lignin contents, which is perhaps an ideal feedstock for bioenergy production. To investigate the effects of abscisic acid (ABA) on duckweed biomass and starch accumulation, Spirodela polyrrhiza was cultivated at different ABA concentrations. The results showed that the highest starch content in duckweed (21.8% dry weight) was achieved in 1.0 × 10-2 mg L-1 ABA medium, 70.3% higher than that of the control medium without ABA. The number of starch granules in 1.0 × 10-2 mg L-1 ABA medium was far more than that in the control medium. The highest adenosine diphosphate (ADP)-glucose pyrophosphorylase (AGPase) activity was observed in the 1.0 × 10-2 mg L-1 ABA medium, which was caused by the up-regulation expression of ADP-glucose pyrophosphorylase 2 (APL2). Further investigations on cell ultra-structures and stomatal property of the duckweed indicated that ABA increased the number and size of starch granules and stomatal size in duckweed cells. These enhancements lead to a greatly improved energy flow in the aquatic plant from photosynthesis to carbon storage, making duckweed a potential renewable bioenergy crop.
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Affiliation(s)
- Xuezhi Wang
- School of Water Resources and Environment, China University of Geosciences (Beijing) Beijing 100083 China +86 10 82321081 +86 10 82322281
| | - Weihua Cui
- School of Water Resources and Environment, China University of Geosciences (Beijing) Beijing 100083 China +86 10 82321081 +86 10 82322281
- State Key Laboratory of Biogeology and Geology, China University of Geosciences (Beijing) Beijing 100083 China
| | - Weiwu Hu
- School of Water Resources and Environment, China University of Geosciences (Beijing) Beijing 100083 China +86 10 82321081 +86 10 82322281
- The Journal Center, China University of Geosciences (Beijing) Beijing 100083 China
| | - Chuanping Feng
- School of Water Resources and Environment, China University of Geosciences (Beijing) Beijing 100083 China +86 10 82321081 +86 10 82322281
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Sun H, A D, Feng Y, Vithanage M, Mandal S, Shaheen SM, Rinklebe J, Shi W, Wang H. Floating duckweed mitigated ammonia volatilization and increased grain yield and nitrogen use efficiency of rice in biochar amended paddy soils. CHEMOSPHERE 2019; 237:124532. [PMID: 31551202 DOI: 10.1016/j.chemosphere.2019.124532] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/02/2019] [Accepted: 08/05/2019] [Indexed: 06/10/2023]
Abstract
Biochar (BC) potentially accelerates ammonia (NH3) volatilization from rice paddy soils. In this regard, however, application the floating duckweed (FDW) to biochar-amended soil to control the NH3 volatilization is not studied up-to-date. Therefore, the impacts of BC application with and without FDW on the NH3 and nitrous oxide (N2O) emissions, NUE and rice grain yield were evaluated in a soil columns experiment. We repacked soil columns with Hydragric Anthrosol and Haplic Acrisol treated in triplicates with Urea, Urea + BC and Urea + BC + FDW. Total NH3 losses from Hydragric Anthrosol and Haplic Acrisol were 15.2-33.2 kg N ha-1 and 19.6-39.7 kg N ha-1, respectively. Urea + BC treatment recorded 25.6-43.7% higher (p < 0.05) NH3 losses than Urea treatment, attributing to higher pH value of floodwater. Floating duckweed decreased soil pH and therefore significantly reduced (p < 0.05) the NH3 volatilizations from the two soils by 50.6-54.2% over Urea + BC and by 34.2-38.0% over Urea treatment. Total N2O emissions from Hydragric Anthrosol and Haplic Acrisol were 1.19-3.42 kg N ha-1 and 0.67-2.08 kg N ha-1, respectively. Urea + BC treatment increased N2O emissions by 58.8-68.7% and Urea + BC + FDW treatment further increased N2O emission by 187.4-210.4% over Urea treatment. Higher ammonium content of the topsoil, explained the N2O increases in the Urea + BC and Urea + BC + FDW treatments. Urea + BC slightly reduced the rice grain yield and NUE, while the Urea + BC + FDW promoted both rice yield and NUE. Our data indicate that co-application of FDW along with BC in paddy soil could mitigate the NH3 volatilization and enhance the rice grain yield and NUE.
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Affiliation(s)
- Haijun Sun
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, 210037, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, China.
| | - Dan A
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, China.
| | - Yanfang Feng
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
| | - Meththika Vithanage
- Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
| | - Sanchita Mandal
- Future Industries Institute, Building X, University of South Australia, Mawson Lakes, SA, 5095, Australia.
| | - Sabry M Shaheen
- Laboratory of Soil- and Groundwater-Management, Institute of Foundation Engineering, Water- and Waste-Management, School of Architecture and Civil Engineering, University of Wuppertal, Pauluskirchstraße 7, 42285, Wuppertal, Germany; Department of Arid Land Agriculture, Faculty of Meteorology, Environment, and Arid Land Agriculture, King Abdulaziz University, 21589, Jeddah, Saudi Arabia; Department of Soil and Water Sciences, Faculty of Agriculture, University of Kafrelsheikh, 33516 Kafr El-Sheikh, Egypt.
| | - Jörg Rinklebe
- Laboratory of Soil- and Groundwater-Management, Institute of Foundation Engineering, Water- and Waste-Management, School of Architecture and Civil Engineering, University of Wuppertal, Pauluskirchstraße 7, 42285, Wuppertal, Germany; Department of Environment, Energy and Geoinformatics, University of Sejong, Seoul 02841, Republic of Korea.
| | - Weiming Shi
- School of Food Science and Engineering, Foshan University, Foshan, 528000, Guangdong, China.
| | - Hailong Wang
- School of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China; School of Environment and Chemical Engineering, Foshan University, Foshan, 528000, Guangdong, China.
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