1
|
Liu X, Sun D, Huang H, Zhang J, Zheng H, Jia Q, Zhao M. Rice-fish coculture without phosphorus addition improves paddy soil nitrogen availability by shaping ammonia-oxidizing archaea and bacteria in subtropical regions of South China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:171642. [PMID: 38479518 DOI: 10.1016/j.scitotenv.2024.171642] [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: 10/09/2023] [Revised: 03/08/2024] [Accepted: 03/09/2024] [Indexed: 04/16/2024]
Abstract
Rice-fish coculture (RFC), as a traditional agricultural strategy in China, can optimally utilize the scarce resource, especially in subtropical regions where phosphorus (P) deficiency limits agricultural production. However, ammonia-oxidizing archaea (AOA) and bacteria (AOB) are involved in the ammonia oxidation, but it remains uncertain whether their community compositions are related to the RFC combined with and without P addition that improves soil nitrogen (N) use efficiency. Here, a microcosm experiment was conducted to assess the impacts of RFC combined with and without inorganic P (0 and 50 mg P kg-1 as KH2PO4) addition on AOA and AOB community diversities, enzyme activities and N availability. The results showed that RFC significantly increased available N content without P addition compared with P addition. Moreover, RFC significantly increased urease activity and AOA shannon diversity, and reduced NAG activity and AOB shannon diversity without P addition, respectively. Higher diversity of AOA compared with that of AOB causes greater competition for resources and energy within their habitats, thereby resulting in lower network complexity. Our findings indicated that the abundances of AOA and AOB are influenced through the introduction of fish and/or P availability, of which AOB is linked to N availability. Overall, RFC could improve paddy soil N availability without P addition in subtropical region, which provides a scientific reference for promoting the practices that reduce N fertilizer application in RFC.
Collapse
Affiliation(s)
- Xing Liu
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Daolin Sun
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Huaqiao Huang
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Jiaen Zhang
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China.
| | - Hongjun Zheng
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Qi Jia
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Min Zhao
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| |
Collapse
|
2
|
Hou Y, Yu Z, Jia R, Li B, Zhu J. Integrated rice-yellow catfish farming resulting in variations in the agricultural environment, rice growth performance, and soil bacterial communities. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:28967-28981. [PMID: 38564129 DOI: 10.1007/s11356-024-33108-0] [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: 01/11/2024] [Accepted: 03/23/2024] [Indexed: 04/04/2024]
Abstract
Different rice production patterns exert varying comprehensive impacts on the agricultural environment. Integrated rice-fish farming, an advanced and rapidly developing agricultural production pattern, aims to improve resource utilization efficiency and enhance food productivity. To unravel the responses and internal interactions of the agricultural ecological environment to integrated rice-fish farming, we assessed and compared environmental factor, rice growth performance, and soil microbiome in both integrated rice-yellow catfish farming (IRYF) and rice monoculture (RM) systems. Our results revealed significant increases in the total nitrogen and ammonia concentrations in the paddy water and soil induced by the IRYF. Rice growth performance in the IRYF group surpassed that in the RM group. IRYF obviously impacted almost all dominant bacterial phyla, genera, and functional groups (top ten most abundant), enhancing the ability of bacteria to degrade and utilize organic matter. Additionally, IRYF led to noticeable reductions in the Shannon, Simpson, Chao 1, and Pielou_J indices. IRYF strengthened the interconnections between various taxonomic units in bacterial co-occurrence network, resulting in increased complexity, stability, and disturbance resistance in the soil bacterial community. IRYF notably facilitated the transition from a community assembly dominated by stochastic processes to one dominated by deterministic processes for the soil bacterial community. The deterministic process driving this transition was variable selection. All the environmental factors, except for soil nitrate, demonstrated relatively high contributions to alterations in soil bacterial communities, with environmental variables significantly positively correlated with the soil bacterial community in the IRYF group. Alterations in functionality, composition, and diversity of the soil bacterial community were clearly associated with most environmental variables and rice growth performance indices. Our research contributed to understanding the comprehensive impacts of integrated rice-fish farming on agricultural ecosystems and provide theoretical support for achieving the sustainable agricultural production and optimizing the rice production patterns.
Collapse
Affiliation(s)
- Yiran Hou
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China
| | - Zhaoxiong Yu
- Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, China
| | - Rui Jia
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China
| | - Bing Li
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China
| | - Jian Zhu
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China.
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China.
| |
Collapse
|
3
|
Hou Y, Jia R, Sun W, Li B, Zhu J. Influences of the Integrated Rice-Crayfish Farming System with Different Stocking Densities on the Paddy Soil Microbiomes. Int J Mol Sci 2024; 25:3786. [PMID: 38612595 PMCID: PMC11011395 DOI: 10.3390/ijms25073786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
Integrated rice-fish farming has emerged as a novel agricultural production pattern to address global food security challenges. Aiming to determine the optimal, scientifically sound, and sustainable stocking density of red claw crayfish (Cherax quadricarinatus) in an integrated rice-crayfish farming system, we employed Illumina high-throughput 16S rRNA gene sequencing to evaluate the impact of different stocking densities of red claw crayfish on the composition, diversity, function, and co-occurrence network patterns of soil bacterial communities. The high stocking density of red claw crayfish reduced the diversity and evenness of the soil bacterial community during the mid-culture stage. Proteobacteria, Actinobacteria, and Chloroflexi emerged as the most prevalent phyla throughout the experimental period. Low stocking densities initially boosted the relative abundance of Actinobacteria in the paddy soil, while high densities did so during the middle and final stages. There were 90 distinct functional groups identified across all the paddy soil samples, with chemoheterotrophy and aerobic chemoheterotrophy being the most abundant. Low stocking densities initially favored these functional groups, whereas high densities enhanced their relative abundances in the later stages of cultivation. Medium stocking density of red claw crayfish led to a more complex bacterial community during the mid- and final culture stages. The experimental period showed significant correlations with soil bacterial communities, with total nitrogen (TN) and total phosphorus (TP) concentrations emerging as primary factors contributing to the alterations in soil bacterial communities. In summary, our findings demonstrated that integrated rice-crayfish farming significantly impacted the soil microbiomes and environmental factors at varying stocking densities. Our study contributed to theoretical insights into the profound impact of integrated rice-crayfish farming with various stocking densities on bacterial communities in paddy soils.
Collapse
Affiliation(s)
- Yiran Hou
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (Y.H.); (R.J.); (W.S.)
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| | - Rui Jia
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (Y.H.); (R.J.); (W.S.)
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| | - Wei Sun
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (Y.H.); (R.J.); (W.S.)
| | - Bing Li
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (Y.H.); (R.J.); (W.S.)
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| | - Jian Zhu
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China; (Y.H.); (R.J.); (W.S.)
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| |
Collapse
|
4
|
Suzuki K, Katashima K, Miki T, Igarashi H, Xu Q, Ohkubo S, Iwaishi S, Harada N. Bacterial Community Composition Under Paddy Conditions Is More Strongly Affected by the Difference in Soil Type than by Field Management. MICROBIAL ECOLOGY 2023; 86:2552-2559. [PMID: 37405460 DOI: 10.1007/s00248-023-02261-3] [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: 02/15/2023] [Accepted: 06/29/2023] [Indexed: 07/06/2023]
Abstract
In this study, we aimed to investigate the effects of soil type and field management on bacterial communities in paddy soils, taking into account the differences in soil physicochemical properties. We collected soil samples from 51 paddy fields in six prefectures in Japan. The paddy fields were managed under organic regimes (26 fields), natural-farming regimes (12 fields), or conventional regimes (13 fields). The paddy fields were classified into four soil types: andosol, gray lowland soil, gley soil, and gray upland soil. Soil DNA was extracted from the soil samples collected 2 to 10 weeks after the flooding, and the 16S rRNA gene amplicon sequencing analysis was performed. The bacterial community compositions were dominated by the phylum Proteobacteria, Chloroflexi, Actinobacteria, Acidobacteria, and Firmicutes in all fields. The difference in soil type had significant effects on α-diversities of the bacterial communities, although the field management had no effect. The soil bacterial communities in the gley soils and gray upland soils individually formed different groups from those in the other soils, while the andosol and gray lowland soils tended to form relatively similar bacterial communities. On the other hand, the effects of the field management were estimated to be smaller than those of soil type. The β-diversity of the bacterial community compositions were significantly correlated with soil pH, total nitrogen content, total carbon content, and divalent iron content. Our results suggest that the soil microbial community in paddy fields may be strongly influenced by soil physiochemical properties derived from differences in soil type.
Collapse
Affiliation(s)
- Kazuki Suzuki
- Center for Transdisciplinary Research, Institute for Research Promotion, Niigata University, Niigata, 950-2181, Japan.
| | - Kana Katashima
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - Takaaki Miki
- International Nature Farming Research Center, Nagano, 390-1401, Japan
| | - Hajime Igarashi
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - Qicong Xu
- International Nature Farming Research Center, Nagano, 390-1401, Japan
| | - Shinji Ohkubo
- International Nature Farming Research Center, Nagano, 390-1401, Japan
| | - Shinji Iwaishi
- International Nature Farming Research Center, Nagano, 390-1401, Japan
| | - Naoki Harada
- Institute of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| |
Collapse
|
5
|
Yu H, Han M, Cai C, Lv F, Teng Y, Zou L, Ding G, Bai X, Yao J, Ni K, Zhu C. Soil organic carbon stability and exogenous nitrogen fertilizer influence the priming effect of paddy soil under long-term exposure to elevated atmospheric CO 2. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:102313-102322. [PMID: 37665443 DOI: 10.1007/s11356-023-29485-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 08/20/2023] [Indexed: 09/05/2023]
Abstract
Soil organic carbon (SOC) stability and dynamics are greatly influenced by long-term elevated atmospheric CO2 [CO2]. The priming effect (PE) is vital in SOC stability and dynamics, but its role in paddy soil under long-term elevated [CO2] remains unclear. To examine how SOC stability changed in paddy soil after long-term elevated atmospheric CO2 enrichment, the PE was quantified through a 13C-glucose-induced experiment with different N levels for topsoil (0-20 cm) from paddy free-air CO2 enrichment (FACE) platform. Compared with the ambient CO2 concentration ([CO2]), 10 years of elevated [CO2] (500 µmol·mol-1) significantly increased SOC and TN content by 18.4% and 19.0%, respectively, while the C/N ratio was not changed. The labile C fractions including dissolved organic carbon (DOC) and readily oxidizable organic carbon (ROC), but excluding microbial biomass C (MBC), accumulated faster than SOC in paddy soil, which implied the reduced SOC stability for long-term elevated [CO2] enrichment. With the decline of SOC stability, the exogenously induced cumulative specific PE (PE per gram of SOC) remarkably increased by 41.1-72.7% for elevated [CO2] fumigation. The cumulative PE, especially the cumulative specific PE, was found significantly linearly correlated with the ROC content or ROC/SOC ratio (labile SOC pool). Furthermore, the application of nitrogen fertilizer slowed down the PE under elevated [CO2] condition. Our results showed that long-term elevated [CO2] enrichment reduced SOC stability and, together with exogenous nitrogen fertilizer, regulated the PE in paddy soil.
Collapse
Affiliation(s)
- Hongyan Yu
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China.
| | - Mixue Han
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Chuang Cai
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Fu Lv
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Yue Teng
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Luyi Zou
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Guoqing Ding
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Xuejia Bai
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Junhou Yao
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Kang Ni
- Tea Research Institute, Chinese Academy of Agriculture Sciences, Hangzhou, 310008, China
| | - Chunwu Zhu
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| |
Collapse
|
6
|
Morizet-Davis J, Marting Vidaurre NA, Reinmuth E, Rezaei-Chiyaneh E, Schlecht V, Schmidt S, Singh K, Vargas-Carpintero R, Wagner M, von Cossel M. Ecosystem Services at the Farm Level-Overview, Synergies, Trade-Offs, and Stakeholder Analysis. GLOBAL CHALLENGES (HOBOKEN, NJ) 2023; 7:2200225. [PMID: 37483416 PMCID: PMC10362122 DOI: 10.1002/gch2.202200225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/04/2023] [Indexed: 07/25/2023]
Abstract
The current geological epoch is characterized by anthropogenic activity that greatly impacts on natural ecosystems and their integrity. The complex networks of ecosystem services (ESs) are often ignored because the provision of natural resources, such as food and industrial crops, is mistakenly viewed as an independent process separate from ecosystems and ignoring the impacts on ecosystems. Recently, research has intensified on how to evaluate and manage ES to minimize environmental impacts, but it remains unclear how to balance anthropogenic activity and ecosystem integrity. This paper reviews the main ESs at farm level including provisioning, regulating, habitat, and cultural services. For these ESs, synergies are outlined and evaluated along with the respective practices (e.g., cover- and intercropping) and ES suppliers (e.g., pollinators and biocontrol agents). Further, several farm-level ES trade-offs are discussed along with a proposal for their evaluation. Finally, a framework for stakeholder approaches specific to farm-level ES is put forward, along with an outlook on how existing precision agriculture technologies can be adapted for improved assessment of ES bundles. This is believed to provide a useful framework for both decision makers and stakeholders to facilitate the development of more sustainable and resilient farming systems.
Collapse
Affiliation(s)
- Jonathan Morizet-Davis
- Biobased Resources in the Bioeconomy (340b) Institute of Crop Science University of Hohenheim 70599 Stuttgart Germany
| | - Nirvana A Marting Vidaurre
- Biobased Resources in the Bioeconomy (340b) Institute of Crop Science University of Hohenheim 70599 Stuttgart Germany
| | - Evelyn Reinmuth
- Biobased Resources in the Bioeconomy (340b) Institute of Crop Science University of Hohenheim 70599 Stuttgart Germany
| | | | - Valentin Schlecht
- Biobased Resources in the Bioeconomy (340b) Institute of Crop Science University of Hohenheim 70599 Stuttgart Germany
| | - Susanne Schmidt
- School of Agriculture and Food Sciences University of Queensland The University of Queensland Brisbane 4072 QLD Australia
| | - Kripal Singh
- Department of Biological Sciences and Biotechnology Andong National University Andong 36729 Republic of Korea
| | - Ricardo Vargas-Carpintero
- Biobased Resources in the Bioeconomy (340b) Institute of Crop Science University of Hohenheim 70599 Stuttgart Germany
| | - Moritz Wagner
- Department of Applied Ecology Hochschule Geisenheim University 65366 Geisenheim Germany
| | - Moritz von Cossel
- Biobased Resources in the Bioeconomy (340b) Institute of Crop Science University of Hohenheim 70599 Stuttgart Germany
| |
Collapse
|
7
|
Puppe D, Dimitrakopoulos PG, Lu B. Biodiversity and Ecosystem Functioning in Naturally and Experimentally Assembled Communities. BIOLOGY 2023; 12:835. [PMID: 37372120 DOI: 10.3390/biology12060835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023]
Abstract
Numerous studies have proved that biodiversity and ecosystem functioning (BEF) are closely linked [...].
Collapse
Affiliation(s)
- Daniel Puppe
- Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany
| | | | - Baorong Lu
- Department of Ecology and Evolutionary Biology, School of Life Sciences, Fudan University, Shanghai 200333, China
| |
Collapse
|
8
|
Shen X, Ma J, Li Y, Li Y, Xia X. The Effects of Multiple Global Change Factors on Soil Nutrients across China: A Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15230. [PMID: 36429948 PMCID: PMC9691138 DOI: 10.3390/ijerph192215230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/13/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
The quantification of the effects of global changes on soil nutrients is crucial for the prediction of future terrestrial ecosystem changes. Combined with 100 articles and 1129 observations from all over China, the meta-analysis method was applied to explore the effects of various global change factors on soil nutrients, including precipitation change, nitrogen addition, warming, and carbon dioxide (CO2) concentration rise. Results indicated that among all the individual drivers, soil nutrients are most sensitive to N addition. Significant positive effects of N addition on carbon concentration (+4.6%), nitrogen concentration (+6.1%), organic carbon (+5.0%), and available nitrogen (+74.6%) were observed considering all the land-use types. The results highlighted that the combined and interactive effects of multiple global change factors on soil nutrients were of great significance. The interaction of the two drivers is usually additive, followed by antagonism and synergy. Our findings contribute to better understanding of how soil nutrients will change under future global change.
Collapse
Affiliation(s)
- Xinyi Shen
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China
| | - Junwei Ma
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China
| | - Yuqian Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Yijia Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China
| | - Xinghui Xia
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Haidian District, Beijing 100875, China
| |
Collapse
|
9
|
Xia B, Zou H, Li L, Zhang B, Xiang Y, Zou Y, Shen Z, Xue S, Han Y. Screening and fermentation medium optimization of a strain favorable to Rice-fish Coculture. Front Microbiol 2022; 13:1054797. [PMID: 36590418 PMCID: PMC9802155 DOI: 10.3389/fmicb.2022.1054797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/25/2022] [Indexed: 11/11/2022] Open
Abstract
Rice-fish coculture (RF) is a small ecosystem in which microorganisms are widely distributed in the fish, water environment, soil, and plants. In order to study the positive effects of microorganisms on common carp and rice in the RF ecosystem, a total of 18 strains with growth-promoting ability were screened from common carp (Cyprinus carpio) gut contents, among which three strains had the ability to produce both DDP-IV inhibitors and IAA. The strain with the strongest combined ability, FYN-22, was identified physiologically, biochemically, and by 16S rRNA, and it was initially identified as Bacillus licheniformis. As the number of metabolites secreted by the strain under natural conditions is not sufficient for production, the FYN-22 fermentation medium formulation was optimized by means of one-factor-at-a-time (OFAT) experiments and response surface methodology (RSM). The results showed that, under the conditions of a soluble starch concentration of 10.961 g/l, yeast concentration of 2.366 g/l, NH4Cl concentration of 1.881 g/l, and FeCl3 concentration of 0.850 g/l, the actual measured number of FYN-22 spores in the fermentation broth was 1.913 × 109 CFU/ml, which was 2.575-fold improvement over the pre-optimization value. The optimized fermentation solution was used for the immersion operation of rice seeds, and, after 14 days of incubation in hydroponic boxes, the FYN-22 strain was found to have a highly significant enhancement of 48.31% (p < 0.01) on the above-ground part of rice, and different degrees of effect on root length, fresh weight, and dry weight (16.73, 17.80, and 21.97%, respectively; p < 0.05). This study may provide new insights into the fermentation process of Bacillus licheniformis FYN-22 and its further utilization in RF systems.
Collapse
Affiliation(s)
- Banghua Xia
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Haobo Zou
- China Animal Husbandry Industry Co., Ltd., Beijing, China
| | - Linyuan Li
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Bitao Zhang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Yifang Xiang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Yuning Zou
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Zhentao Shen
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Shuqun Xue
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China,*Correspondence: Shuqun Xue,
| | - Ying Han
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China,*Correspondence: Shuqun Xue,
| |
Collapse
|
10
|
Baćmaga M, Wyszkowska J, Borowik A, Kucharski J. Effects of Tebuconazole Application on Soil Microbiota and Enzymes. Molecules 2022; 27:7501. [PMID: 36364328 PMCID: PMC9656111 DOI: 10.3390/molecules27217501] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/28/2022] [Accepted: 11/01/2022] [Indexed: 07/29/2023] Open
Abstract
Identification of pesticide impact on the soil microbiome is of the utmost significance today. Diagnosing the response of bacteria to tebuconazole, used for plant protection, may help isolate the most active bacteria applicable in the bioaugmentation of soils contaminated with this preparation. Bearing in mind the above, a study was undertaken to test the effect of tebuconazole on the diversity of bacteria at all taxonomic levels and on the activity of soil enzymes. It was conducted by means of standard and metagenomic methods. Its results showed that tebuconazole applied in doses falling within the ranges of good agricultural practice did not significantly disturb the biological homeostasis of soil and did not diminish its fertility. Tebuconazole was found to stimulate the proliferation of organotrophic bacteria and fungi, and also the activities of soil enzymes responsible for phosphorus, sulfur, and carbon metabolism. It did not impair the activity of urease responsible for urea hydrolysis, or cause any significant changes in the structure of bacterial communities. All analyzed soil samples were mainly populated by bacteria from the phylum Proteobacteria, Actinobacteria, Firmicutes, Gemmatimonadetes, Acidobacteria, Planctomycetes, and Chloroflexi. Bacteria from the genera Kaistobacter, Arthrobacter, and Streptomyces predominated in the soils contaminated with tebuconazole, whereas these from the Gemmata genus were inactivated by this preparation.
Collapse
|