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Article: Changes in plant nutrient status following combined elevated [CO

Wang, Jianqing / Li, Lianqing / Lam, Shu Kee / Shi, Xiuzhen / Pan, Genxing

2023 Volume 14, Page(s) 1132414

Abstract: Projected global climate change is a potential threat to nutrient utilization in agroecosystems. However, the combined effects of elevated [ ... ...

Abstract	Projected global climate change is a potential threat to nutrient utilization in agroecosystems. However, the combined effects of elevated [CO
Language	English
Publishing date	2023-02-22
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2613694-6
ISSN	1664-462X
ISSN	1664-462X
DOI	10.3389/fpls.2023.1132414
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Legacy Effect of Long-Term Elevated CO2 and Warming on Soil Properties Controls Soil Organic Matter Decomposition

Li, Jie / Sun, Baobao / Liu, Cheng / Drosos, Marios / Zhang, Xuhui / Liu, Xiaoyu / Li, Lianqing / Pan, Genxing

Agriculture. 2023 Mar. 08, v. 13, no. 3

2023

Abstract: Plant litter quality is one of the key factors that control soil organic matter (SOM) decomposition. Under climate change, although significant change in litter quality has been intensively reported, the effect of litter quality change on SOM ... ...

Abstract	Plant litter quality is one of the key factors that control soil organic matter (SOM) decomposition. Under climate change, although significant change in litter quality has been intensively reported, the effect of litter quality change on SOM decomposition is poorly understood. This limits our ability to model the dynamics of soil carbon under climate change. To determine the effect of litter quality and soil property change on SOM decomposition, we performed a controlled, reciprocal transplant and litter decomposition experiments. The soils and plant litters were collected from a long-term field experiment, where four treatments were designed, including: (1) the control without warming at ambient CO₂; (2) elevated atmospheric CO₂ up to 500 ppm (C); (3) warming plant canopy by 2 °C (T); (4) elevated CO₂ plus warming (CT). We found that elevated CO₂ and warming altered the litter quality significantly in terms of macronutrients’ content and their stoichiometry. Elevated CO₂ decreased the concentration of N in rice and wheat straw, while warming decreased the concentration of N and K in wheat straw. However, the change in plant litter quality did not lead to a shift in SOM decomposition. On the contrary, the legacy effect of long-term elevated CO₂ and warming on soil properties dominated the decomposition rate of SOM. Elevated atmospheric CO₂ suppressed SOM decomposition mainly by increasing phosphorous availability and lowering the soil C/N, fungi/bacteria ratio, and N-acetyl-glucosaminidase activity, while warming or elevated CO₂ plus warming had no effect on SOM decomposition. Our results demonstrated that the changes in soil property other than litter quality control the decomposition of SOM under climate change, and soil property change in respond to climate change should be considered in model developing to predict terrestrial soil carbon dynamics under elevated atmospheric CO₂ and warming.
Keywords	agriculture ; canopy ; carbon dioxide ; carbon dioxide enrichment ; climate change ; field experimentation ; nitrogen content ; phosphorus ; plant litter ; quality control ; rice ; soil carbon ; soil organic matter ; soil properties ; stoichiometry ; wheat straw
Language	English
Dates of publication	2023-0308
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2651678-0
ISSN	2077-0472
ISSN	2077-0472
DOI	10.3390/agriculture13030639
Database	NAL-Catalogue (AGRICOLA)

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Article: Elevated CO

Li, Jie / Zhang, Han / Xie, Wenyi / Liu, Cheng / Liu, Xiaoyu / Zhang, Xuhui / Li, Lianqing / Pan, Genxing

Journal of environmental sciences (China)

2023 Volume 136, Page(s) 11–20

Abstract: Soil redox potential (Eh) plays an important role in the biogeochemical cycling of soil nutrients. Whereas its effect soil process and nutrients' availability under elevated atmospheric ... ...

Abstract	Soil redox potential (Eh) plays an important role in the biogeochemical cycling of soil nutrients. Whereas its effect soil process and nutrients' availability under elevated atmospheric CO
MeSH term(s)	Soil/chemistry ; Carbon Dioxide ; Oxygen ; Oxidation-Reduction ; Oryza/chemistry ; Soil Pollutants/analysis
Chemical Substances	Soil ; Carbon Dioxide (142M471B3J) ; Oxygen (S88TT14065) ; Soil Pollutants
Language	English
Publishing date	2023-01-10
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1092300-7
ISSN	1878-7320 ; 1001-0742
ISSN (online)	1878-7320
ISSN	1001-0742
DOI	10.1016/j.jes.2023.01.003
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Article ; Online: Enhancing soil redox dynamics: Comparative effects of Fe-modified biochar (N-Fe and S-Fe) on Fe oxide transformation and Cd immobilization.

Si, Tianren / Yuan, Rui / Qi, Yanjie / Zhang, Yuhao / Wang, Yan / Bian, Rongjun / Liu, Xiaoyu / Zhang, Xuhui / Joseph, Stephen / Li, Lianqing / Pan, Genxing

Environmental pollution (Barking, Essex : 1987)

2024 Volume 347, Page(s) 123636

Abstract: Biochar and modified biochar have gained wide attention for Cd-contaminated soil remediation. This study investigates the effects of rape straw biochar (RSB), sulfur-iron modified biochar (S-FeBC), and nitrogen-iron modified biochar (N-FeBC) on soil Fe ... ...

Abstract	Biochar and modified biochar have gained wide attention for Cd-contaminated soil remediation. This study investigates the effects of rape straw biochar (RSB), sulfur-iron modified biochar (S-FeBC), and nitrogen-iron modified biochar (N-FeBC) on soil Fe oxide transformation and Cd immobilization. The mediated electrochemical analysis results showed that Fe modification effectively enhanced the electron exchange capacity (EEC) of biochar. After 40 days of anaerobic incubation, compared to the treatment without biochar (CK), the concentrations of CaCl
MeSH term(s)	Soil/chemistry ; Cadmium/analysis ; Oxides/chemistry ; Calcium Chloride ; Soil Pollutants/analysis ; Charcoal/chemistry ; Iron/chemistry ; Oxidation-Reduction ; Ferrous Compounds
Chemical Substances	biochar ; Soil ; Cadmium (00BH33GNGH) ; Oxides ; Calcium Chloride (M4I0D6VV5M) ; Soil Pollutants ; Charcoal (16291-96-6) ; Iron (E1UOL152H7) ; Ferrous Compounds
Language	English
Publishing date	2024-02-22
Publishing country	England
Document type	Journal Article
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2024.123636
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Article ; Online: Interaction of rhizobia with native AM fungi shaped biochar effect on soybean growth

Liu, Minglong / Ke, Xianlin / Joseph, Stephen / Siddique, Kadambot H.M. / Pan, Genxing / Solaiman, Zakaria M.

Industrial Crops & Products. 2022 Nov., v. 187 p.115508-

2022

Abstract: While biochar amendment is widely recommended as an excellent agricultural management practice, the biochar effect on the productivity of legume crops with symbiotic microorganisms has been poorly elucidated. Hence, a pot experiment was conducted by ... ...

Abstract	While biochar amendment is widely recommended as an excellent agricultural management practice, the biochar effect on the productivity of legume crops with symbiotic microorganisms has been poorly elucidated. Hence, a pot experiment was conducted by growing soybean with or without commercial rhizobia inoculation in an arbuscular mycorrhizal (AM) fungi rich sandy soil amended with wheat straw biochar produced respectively at 350 °C, 450 °C, and 550 °C. We tested the effect of biochar on soybean-rhizobia symbiosis and its impact on plant growth, leaf gas exchange and mycorrhizal colonisation. In brief, rhizobia inoculation, without biochar, increased net photosynthetic rate by 81% and plant total biomass by 44% compared to no inoculation (the control). Without inoculation, amendment of low-temperature biochar (350 ºC) resulted in higher (by 51%) plant biomass than high-temperature (550 °C) biochar. With rhizobia inoculation, low-temperature biochar decreased plant biomass by 9.3% compared to high-temperature biochar. Further, soybean with rhizobia under high-temperature biochar decreased plant biomass by 17% compared to rhizobia inoculation only but increased by 19% compared to the control. Soybean leaf gas exchange capacity and root morphological traits were consistent with plant biomass but symbiotic activity showed small differences among all the treatments. Overall, N-fixing rhizobia could alter the biochar effect on soybean in soil rich in indigenous AM fungi, depending on the pyrolysis temperature of the biochar used. Low-temperature biochar stimulated soybean growth greater than high-temperature biochar, while rhizobia shifted biochar's positive effect.
Keywords	agricultural management ; biochar ; gas exchange ; leaves ; photosynthesis ; phytomass ; plant growth ; pyrolysis ; sandy soils ; soybeans ; temperature ; vesicular arbuscular mycorrhizae ; wheat straw ; Soybean ; Rhizobia inoculation ; Arbuscular mycorrhizal fungi ; Tripartite symbiosis ; Pyrolyzed temperature
Language	English
Dates of publication	2022-11
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	1132158-1
ISSN	1872-633X ; 0926-6690
ISSN (online)	1872-633X
ISSN	0926-6690
DOI	10.1016/j.indcrop.2022.115508
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Article: Exploring the environmental impact of crop production in China using a comprehensive footprint approach

Li, Yunpeng / Wu, Wenao / Yang, Jiaxin / Cheng, Kun / Smith, Pete / Sun, Jianfei / Xu, Xiangrui / Yue, Qian / Pan, Genxing

Science of the total environment. 2022 June 10, v. 824

2022

Abstract: The carbon-nutrient-water cycles of farmland ecosystem not only provides support for crop production, but also has an impact on the environment. Comprehensively quantifying the impact of crop production on the environment can provide a basis for crop ... ...

Abstract	The carbon-nutrient-water cycles of farmland ecosystem not only provides support for crop production, but also has an impact on the environment. Comprehensively quantifying the impact of crop production on the environment can provide a basis for crop sustainable production. A series of environmental footprint approaches, including carbon footprint (CF), nitrogen footprint (NF) and water footprint (WF), were optimized to evaluate greenhouse gas (GHG) emissions, reactive nitrogen (Nr) loss and water resource consumption in crop production, and a comprehensive footprint method based on Endpoint modeling was proposed to evaluate the overall environmental impact of crop production in China. The CF, NF and WF of 28 forms of crop production varied from 1206.29 kg CO₂ equivalent (CO₂-eq) ha⁻¹ of oil crops to 7326.37 kg CO₂-eq ha⁻¹ of fiber crops, 16.07 kg Nr-eq ha⁻¹ of oil crops to 60.70 kg Nr-eq ha⁻¹ of sugar crops, and 4032.04 m³ ha⁻¹ oil crops to 12,476.28 m³ ha⁻¹ of sugar crops, respectively. The contribution of each component to footprints varied greatly among different crops, and fertilizer manufacture, NH₃ volatilization and green WF were generally the main contributors of CF, NF and WF, respectively. The total GHG emissions, Nr loss and water consumption were estimated to be 670.11 Tg CO₂-eq, 5.50 Tg Nr-eq and 837.06 G m³ for all crop production of China. The greenhouse vegetable with the highest area-scaled comprehensive footprint was 4.5 times that of the oil crops which had the lowest one. The contribution of crop production to the corresponding environmental impact in China was as low as 3.7%, of which NH₃ volatilization contributed 48% and grain production contributed 72%. Mineral N fertilization was the main driver of the variation of comprehensive footprint between provinces, with reduction of N fertilizer application as an important way to reduce the environmental impact of crop production.
Keywords	agricultural land ; carbon footprint ; crop production ; ecosystems ; environment ; environmental impact ; fertilizer application ; greenhouse gases ; greenhouses ; manufacturing ; nitrogen ; nitrogen fertilizers ; oils ; sugars ; vegetables ; volatilization ; water footprint ; China
Language	English
Dates of publication	2022-0610
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2022.153898
Database	NAL-Catalogue (AGRICOLA)

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Article: The effects of biochar soil amendment on rice growth may vary greatly with rice genotypes

Liu, Minglong / Ke, Xianlin / Liu, Xiaoyu / Fan, Xiaorong / Xu, Youzun / Li, Lianqing / Solaiman, Zakaria M. / Pan, Genxing

Science of the total environment. 2022 Mar. 01, v. 810

2022

Abstract: While plant growth promotion with increased nutrient uptake had been well addressed for biochar soil amendment in agriculture, there was limited knowledge on the variation of such effects with crop genotypes. In a rice field experiment without and with ... ...

Abstract	While plant growth promotion with increased nutrient uptake had been well addressed for biochar soil amendment in agriculture, there was limited knowledge on the variation of such effects with crop genotypes. In a rice field experiment without and with biochar soil amendment at 20 t ha⁻¹, 19 mutants of a rice cultivar Wuyunjing 7 (Oryza sativa L.) were tested for plant growth in split plots respectively. At harvest, the biomass of grain, stem and leaves were measured and soil and plant samples were collected for measuring N, P and K nutrients. Across the 19 mutants, relative change with biochar soil amendment varied in a range of −41.6% to +35.6% for biomass production and agronomic traits, and −87.0% to +117% for nutrient accumulation. For the nutrients content, the relative change for N was seen in a narrow range of −29.4% to +16.6%, being similar among grain, leaf and shoot samples while that for P in a wide range of −109% to +105%. With factor analysis, variation of biomass and nutrient uptake was least explained with biochar effect (up to 7.0%) but largely by genotype effect (mostly by 40–70%). However, the genotype × biochar interaction effect could also explain 10–40% of the total variations though the interaction explained 40–70% of leaf P variation. Therefore, mutant and mutant × biochar interactions dominated the agronomic variation of rice production of the Wuyunjing 7 cultivar. Furthermore, across the traits analyzed, genotype effects were shown very significantly but negatively correlated to biochar effects. In other words, biochar soil amendment provided little growth or nutrient enhancement for those mutants bred for high efficiency. Hence, genotype selection should be considered in optimizing prioritizing biochar application in crop production. Of course, variation of biochar effect with crop genotypes deserved further plant physio-ecological studies.
Keywords	Oryza sativa ; biochar ; biomass production ; crop production ; cultivars ; environment ; factor analysis ; field experimentation ; genotype ; growth promotion ; leaves ; mutants ; nutrient uptake ; paddies ; plant growth ; rice ; soil ; soil amendments
Language	English
Dates of publication	2022-0301
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2021.152223
Database	NAL-Catalogue (AGRICOLA)

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Article: Biochar decreases Cd mobility and rice (Oryza sativa L.) uptake by affecting soil iron and sulfur cycling

Wang, Jingbo / Yuan, Rui / Zhang, Yuhao / Si, Tianren / Li, Hao / Duan, Huatai / Li, Lianqing / Pan, Genxing

Science of the total environment. 2022 Aug. 25, v. 836

2022

Abstract: Biochar has been used as an amendment in Cd-contaminated soils. However, the mechanisms of which biochar reduce Cd mobility and rice (Oryza sativa L.) Cd uptake by modifying the iron and sulfur cycling in soil has rarely been addressed in the literature. ...

Abstract	Biochar has been used as an amendment in Cd-contaminated soils. However, the mechanisms of which biochar reduce Cd mobility and rice (Oryza sativa L.) Cd uptake by modifying the iron and sulfur cycling in soil has rarely been addressed in the literature. A pot experiment has been carried out with two Cd-contaminated paddy soils (FG and DBS) from South China. Rice straw biochar (RSB) and rape straw biochar (RASB) pyrolyzed at 450 °C were applied at 0, 0.5, and 1% (w/w), respectively. The results showed that biochar amendment at a rate of 1% reduced grain Cd concentrations by 29.3–35.2%. Furthermore, biochar significantly reduced the Cd concentration of root, while the decline of Cd concentration by RASB treatment was higher than by RSB treatment. Root Cd in RASB₀.₅ was significantly reduced by 56.4–51.8% compared to than that in RSB₀.₅ at the maturing stage. Biochar reduced soil acid-soluble Cd by 15.9–25.3% with the increase of pH at the maturing stage in FG soil, and 30.1–59.3% by promoting soil into more reductive condition at the heading stage in DBS soil with higher contents of Fe and S. In addition, biochar impeded Cd transport from soil to rice roots by increasing the formation of iron plaque at the flooding stage. Owing to the influence of RASB₁, DCB-Cd concentration increased significantly, with 99.7% at the heading stage in FG soil and 237.9% at the tillering stage in DBS soil, respectively. Furthermore, RASB with a higher sulfur concentration had a more positive effect on Cd immobilization and iron plaque formation compared to RSB. As a conclusion, this study suggested that biochar might be able to promote the Cd immobilization by affecting the cycling of iron and sulfur in soil.
Keywords	Oryza sativa ; biochar ; environment ; iron ; pH ; paddies ; rice ; rice straw ; sulfur ; tillering
Language	English
Dates of publication	2022-0825
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2022.155547
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Article ; Online: Diluted pyroligneous vinegar promoted Rhododendron growth by changing functional genes involved in N cycling in the rhizosphere

Zhou, Huimin / He, Lisi / Liu, Xiaoqing / Shi, Gaoling / Sun, Xiaobo / Su, Jiale / Li, Chang / Chen, Junhui / Zwieten, Lukas van / Pan, Genxing

Geoderma. 2023 Oct., v. 438 p.116628-

2023

Abstract: Excessive chemical fertilization in protected horticulture has caused nutrient accumulation, reduction of soil biodiversity, and subsequently soil degradation. Pyroligneous vinegar is a byproduct of pyrolysis for biochar production. While there has been ... ...

Abstract	Excessive chemical fertilization in protected horticulture has caused nutrient accumulation, reduction of soil biodiversity, and subsequently soil degradation. Pyroligneous vinegar is a byproduct of pyrolysis for biochar production. While there has been an increase in interest in using pyroligneous vinegar as an amendment to improve soil quality, a paucity of data exists of its effect on the growth of acidophilous plants such as azalea (Rhododendron). To address this, we investigated the changes in the growth of azalea and soil microbial abundance, specifically those involved in nitrogen cycling in the rhizosphere with amendment of conventional inorganic NPK fertilizer (NPK) and four dilutions of pyroligneous vinegar each with matched NPK content. The results showed that the treatments of pyroligneous vinegar increased plant biomass (51%-99%), root length (29%-81%) and surface area (63%-151%), and nitrogen use efficiency (83%-299%) compared to NPK alone. The pyroligneous vinegar treatments decreased soil pH and increased the contents of rhizosphere soil dissolved organic carbon and nitrate, and changed potential denitrification activity. Compared with NPK, pyroligneous vinegar increased archaeal and bacterial amoA genes (AOA and AOB) abundances (45% − 79% and 39% − 75%, respectively) in nitrification, but inhibited the denitrification gene abundances (i.e. nirS and nirK abundance up to 21% lower). Pyroligneous vinegar increased the ratio of nosZ/(nirS + nirK), suggesting an increased potential to lower nitrous oxide emissions.Correlation analysis indicated that nitrogen use efficiency correlated positively with AOA and AOB, but negatively with nirS and nirK abundance. Therefore, our study suggests that pyroligneous vinegar could improve the growth of acidophilous plants and increase their nitrogen use efficiency by changing nitrogen cycling related functional genes, and could be a potential soil amendment in protected horticulture.
Keywords	Archaea ; NPK fertilizers ; Rhododendron ; biochar ; biodiversity ; byproducts ; denitrification ; genes ; horticulture ; nitrates ; nitrification ; nitrogen ; nitrous oxide ; nutrient use efficiency ; organic carbon ; phytomass ; pyrolysis ; rhizosphere ; soil amendments ; soil degradation ; soil pH ; soil quality ; surface area ; vinegars ; Nitrogen use efficiency ; amoA ; nosZ, nirK, nirS
Language	English
Dates of publication	2023-10
Publishing place	Elsevier B.V.
Document type	Article ; Online
Note	Pre-press version
ZDB-ID	281080-3
ISSN	1872-6259 ; 0016-7061
ISSN (online)	1872-6259
ISSN	0016-7061
DOI	10.1016/j.geoderma.2023.116628
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Rape straw biochar enhanced Cd immobilization in flooded paddy soil by promoting Fe and sulfur transformation

Yuan, Rui / Si, Tianren / Lu, Qingquan / Bian, Rongjun / Wang, Yan / Liu, Xiaoyu / Zhang, Xuhui / Zheng, Jufeng / Cheng, Kun / Joseph, Stephen / Li, Lianqing / Pan, Genxing

Chemosphere. 2023 Oct., v. 339 p.139652-

2023

Abstract: Cd is normally associated with sulfide and Fe oxides in flooded paddy soil. The mechanisms of biochar enhanced Cd immobilization by promoting Fe transformation and sulfide formation are unclear. Rape straw biochar (RSB) pyrolyzed at 450 °C (LB) and 800 ° ... ...

Abstract	Cd is normally associated with sulfide and Fe oxides in flooded paddy soil. The mechanisms of biochar enhanced Cd immobilization by promoting Fe transformation and sulfide formation are unclear. Rape straw biochar (RSB) pyrolyzed at 450 °C (LB) and 800 °C (HB) was added to Cd-contaminated paddy soil at 1% (LB1, HB1) and 2% (LB2, HB2) doses. The results showed that Fe/Mn oxide–Cd (Fe/Mn–Cd) and free Fe oxide (Fed) concentrations decreased in the first 12 days and then rose, while Fe²⁺ in pore water (W–Fe²⁺) tended to rise first and then fall. The electron transfer rate of soil in the HB2 treatment was 4.9-fold higher than that in the treatment without biochar (CK). Fe oxide reduction was enhanced by RSB, with a maximum increase in W–Fe²⁺ by 62.1% in HB2 on Day 12. The negative correlation between W–Fe²⁺ and Fed showed that Fe²⁺ promoted the reformatted of seconded Fe minerals after Day 12, and the Fed in the HB2 treatments increased by 31.5% in this period. RSB addition also promoted the reformation of poorly crystallized Fe oxide (Feₒ) by increasing soil pH, which increased by 17.2% and 15.1% on average in the LB2 and HB2 treatments, respectively, compared to CK. Compared to Day 7, the increased rate of Fe/Mn–Cd on Day 30 in RSB was approximately twice that of CK. Compared to the molybdate group, the maximum decrease in CaCl₂–Cd was 29.1% in LB2 on Day 12. LB2 increased SO₄²⁻ and acid-volatile sulfide concentrations by 6.9- and 4.1-fold, respectively, compared to CK. These results suggested that RSB, particularly HB, promoted more Cd adsorption in Fe minerals by increasing Fe hydroxylation and recrystallization processes. LB increased the contribution of sulfide to Cd immobility.
Keywords	acid volatile sulfides ; adsorption ; biochar ; crystallization ; electron transfer ; hydroxylation ; molybdates ; paddy soils ; soil pH ; straw ; sulfur ; Rape straw biochar ; Cd ; Flooded incubation ; Fe recrystallization ; Sulfide
Language	English
Dates of publication	2023-10
Publishing place	Elsevier Ltd
Document type	Article ; Online
ZDB-ID	120089-6
ISSN	1879-1298 ; 0045-6535 ; 0366-7111
ISSN (online)	1879-1298
ISSN	0045-6535 ; 0366-7111
DOI	10.1016/j.chemosphere.2023.139652
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