1
|
Su J, Xue J, Wang X, Zhang R, Zhang X, Yang Y, Chu X. Modulation of cyclophosphamide-induced immunosuppression and intestinal flora in broiler by deep eutectic solvent extracted polysaccharides of Acanthopanax senticosus. Front Vet Sci 2024; 11:1415716. [PMID: 38863455 PMCID: PMC11165361 DOI: 10.3389/fvets.2024.1415716] [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: 04/11/2024] [Accepted: 04/30/2024] [Indexed: 06/13/2024] Open
Abstract
Introduction The aim of this experiment was to investigate the modulation effect of Acanthopanax senticosus polysaccharide (ASPS-PD) extracted with deep eutectic solvent on cyclophosphamide-induced immunosuppression in broilers and its modulation of the gut microbiota of broilers. Methods The 108 one-day-old broilers were divided into six groups, including the control group, the Cyclophosphamide (CY) model group, the ASPS-PD control group, the ASPA-PD high and low dose groups and the Astragalus polysaccharide group. Body weight, feed intake, feed conversion ratio, and immune organ index of broilers at 7, 14, and 21 days were determined; IL-2, IFN-γ, and lgG1 levels were determined by enzyme-linked immunosorbent assay (ELISA); Broiler caeca feces were analyzed by amplification and 16S rRNA sequencing. Results The results showed that ASPS-PD can restore growth performance, increase immune organ index and improve serum cytokine levels of IL-2 and IFN-γ and immunoglobulin lgG1 levels in CY-treated broilers. The analysis of cecum flora showed that ASPS-PD can promote the proliferation of beneficial bacteria and reduce the number of harmful bacteria, regulating intestinal flora. Discussion Therefore, ASPA-PD may be a potential novel immunomodulator to ameliorate CY-induced immunosuppression and intestinal flora dysregulation in broiler.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Xiuling Chu
- College of Agronomy and Agricultural Engineering, Liaocheng University, Liaocheng, China
| |
Collapse
|
2
|
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.
Collapse
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.
| |
Collapse
|
3
|
Yin Y, Gu M, Zhang W, Yang C, Li H, Wang X, Chen R. Relationships between different types of biochar and N 2O emissions during composting based on roles of nosZ-carrying denitrifying bacterial communities enriched on compost and biochar particles. BIORESOURCE TECHNOLOGY 2024; 394:130214. [PMID: 38122996 DOI: 10.1016/j.biortech.2023.130214] [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: 09/24/2023] [Revised: 12/10/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023]
Abstract
Biochar has demonstrated the potential in mitigating N2O emissions during composting. However, little is known about how microbial communities on biochar particles interact with N2O emissions. This study selected three types of biochar (corn stalk biochar (CSB), rape straw biochar (RSB), and bamboo charcoal (BC)) to investigate the relationship between N2O emissions and denitrifying bacterial communities on compost and biochar particles. The results showed that N2O emissions rate were higher in the thermophilic phase, and the average emissions rate of BC treatment were lower 40% and 26% than CSB and RSB, respectively. The nosZ-carrying denitrifying bacterial community played a key role in reducing N2O emissions, and the network indicated that Rhizobium and Paracoccus on compost particles may have played major roles in reducing N2O emissions, but only Paracoccus on biochar particles. Notably, BC enhanced the efficiency of N2O emission reduction by enhancing the abundance of these key genera.
Collapse
Affiliation(s)
- Yanan Yin
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, PR China.
| | - Mengjin Gu
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, PR China
| | - Wenrong Zhang
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, PR China
| | - Chao Yang
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, PR China
| | - Haichao Li
- Department of Soil and Environment, Swedish University of Agricultural Sciences, Lennart Hjelms Väg 9, 750 07 Uppsala, Sweden
| | - Xiaochang Wang
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, PR China
| | - Rong Chen
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, PR China
| |
Collapse
|
4
|
Xiao Y, Zhou G, Qiu X, Liu F, Chen L, Zhang J. Biodiversity of network modules drives ecosystem functioning in biochar-amended paddy soil. Front Microbiol 2024; 15:1341251. [PMID: 38328424 PMCID: PMC10847562 DOI: 10.3389/fmicb.2024.1341251] [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: 11/20/2023] [Accepted: 01/08/2024] [Indexed: 02/09/2024] Open
Abstract
Introduction Soil microbes are central in governing soil multifunctionality and driving ecological processes. Despite biochar application has been reported to enhance soil biodiversity, its impacts on soil multifunctionality and the relationships between soil taxonomic biodiversity and ecosystem functioning remain controversial in paddy soil. Methods Herein, we characterized the biodiversity information on soil communities, including bacteria, fungi, protists, and nematodes, and tested their effects on twelve ecosystem metrics (including functions related to enzyme activities, nutrient provisioning, and element cycling) in biochar-amended paddy soil. Results The biochar amendment augmented soil multifunctionality by 20.1 and 35.7% in the early stage, while the effects were diminished in the late stage. Moreover, the soil microbial diversity and core modules were significantly correlated with soil multifunctionality. Discussion Our analysis revealed that not just soil microbial diversity, but specifically the biodiversity within the identified microbial modules, had a more pronounced impact on ecosystem functions. These modules, comprising diverse microbial taxa, especially protists, played key roles in driving ecosystem functioning in biochar-amended paddy soils. This highlights the importance of understanding the structure and interactions within microbial communities to fully comprehend the impact of biochar on soil ecosystem functioning in the agricultural ecosystem.
Collapse
Affiliation(s)
- Yu Xiao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Guixiang Zhou
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Xiuwen Qiu
- College of Landscape Architecture, Jiangsu Vocational College of Agriculture and Forestry, Jurong, China
| | - Fangming Liu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lin Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Jiabao Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| |
Collapse
|
5
|
Zhang H, Dierkes RF, Perez-Garcia P, Costanzi E, Dittrich J, Cea PA, Gurschke M, Applegate V, Partus K, Schmeisser C, Pfleger C, Gohlke H, Smits SHJ, Chow J, Streit WR. The metagenome-derived esterase PET40 is highly promiscuous and hydrolyses polyethylene terephthalate (PET). FEBS J 2024; 291:70-91. [PMID: 37549040 DOI: 10.1111/febs.16924] [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: 01/31/2023] [Revised: 07/24/2023] [Accepted: 08/07/2023] [Indexed: 08/09/2023]
Abstract
Polyethylene terephthalate (PET) is a widely used synthetic polymer and known to contaminate marine and terrestrial ecosystems. Only few PET-active microorganisms and enzymes (PETases) are currently known, and it is debated whether degradation activity for PET originates from promiscuous enzymes with broad substrate spectra that primarily act on natural polymers or other bulky substrates, or whether microorganisms evolved their genetic makeup to accepting PET as a carbon source. Here, we present a predicted diene lactone hydrolase designated PET40, which acts on a broad spectrum of substrates, including PET. It is the first esterase with activity on PET from a GC-rich Gram-positive Amycolatopsis species belonging to the Pseudonocardiaceae (Actinobacteria). It is highly conserved within the genera Amycolatopsis and Streptomyces. PET40 was identified by sequence-based metagenome search using a PETase-specific hidden Markov model. Besides acting on PET, PET40 has a versatile substrate spectrum, hydrolyzing δ-lactones, β-lactam antibiotics, the polyester-polyurethane Impranil® DLN, and various para-nitrophenyl ester substrates. Molecular docking suggests that the PET degradative activity is likely a result of the promiscuity of PET40, as potential binding modes were found for substrates encompassing mono(2-hydroxyethyl) terephthalate, bis(2-hydroxyethyl) terephthalate, and a PET trimer. We also solved the crystal structure of the inactive PET40 variant S178A to 1.60 Å resolution. PET40 is active throughout a wide pH (pH 4-10) and temperature range (4-65 °C) and remarkably stable in the presence of 5% SDS, making it a promising enzyme as a starting point for further investigations and optimization approaches.
Collapse
Affiliation(s)
- Hongli Zhang
- Department of Microbiology and Biotechnology, University of Hamburg, Germany
| | - Robert F Dierkes
- Department of Microbiology and Biotechnology, University of Hamburg, Germany
| | - Pablo Perez-Garcia
- Department of Microbiology and Biotechnology, University of Hamburg, Germany
- Molecular Microbiology, Institute for General Microbiology, Kiel University, Germany
| | - Elisa Costanzi
- Center for Structural Studies, Heinrich Heine University, Düsseldorf, Germany
| | - Jonas Dittrich
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University, Düsseldorf, Germany
| | - Pablo A Cea
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University, Düsseldorf, Germany
| | - Marno Gurschke
- Department of Microbiology and Biotechnology, University of Hamburg, Germany
| | - Violetta Applegate
- Center for Structural Studies, Heinrich Heine University, Düsseldorf, Germany
| | - Kristina Partus
- Department of Microbiology and Biotechnology, University of Hamburg, Germany
| | - Christel Schmeisser
- Department of Microbiology and Biotechnology, University of Hamburg, Germany
| | - Christopher Pfleger
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University, Düsseldorf, Germany
| | - Holger Gohlke
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University, Düsseldorf, Germany
- Institute of Bio- and Geosciences (IBG-4: Bioinformatics), John von Neumann Institute for Computing and Jülich Supercomputing Centre, Forschungszentrum Jülich GmbH, Germany
| | - Sander H J Smits
- Center for Structural Studies, Heinrich Heine University, Düsseldorf, Germany
- Institute of Biochemistry, Heinrich Heine University, Düsseldorf, Germany
| | - Jennifer Chow
- Department of Microbiology and Biotechnology, University of Hamburg, Germany
| | - Wolfgang R Streit
- Department of Microbiology and Biotechnology, University of Hamburg, Germany
| |
Collapse
|
6
|
Wang P, Wang S, Chen F, Zhang T, Kong W. Preparation of two types plant biochars and application in soil quality improvement. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167334. [PMID: 37748605 DOI: 10.1016/j.scitotenv.2023.167334] [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: 07/14/2023] [Revised: 09/14/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023]
Abstract
Soil degradation is a global problem that endangers sustainable development. Biochar is a solid, stable, carbon-rich, and highly aromatic material prepared using plant feedstock with a rich pore structure, high specific surface area, and high capacity for holding water and nutrients. This study selected two typical plant resource raw materials, Spartina alterniflora (P. australis) and Spartina alterniflora (S. alterniflora), to prepare biochar at different temperatures, and then investigated the effects of different raw materials and preparation temperatures on the biochar's characteristics. After re-activation treatment, soil improvement experiments were conducted under different carbon application rates. The prepared biochar was alkaline, and contained abundant oxygen-containing functional groups and nutrients (including C, N, Ca, Na, and Mg). Biochar addition had significant effects on the soil microbial community and soil enzyme activity. Finally, by calculating the membership function and factor weights, the various physicochemical and biological properties of the soil were quantified in the form of soil quality indices. The results showed that biochar application had a significant promoting effect on soil quality, mainly through providing rich nutrient sources, enhancing the soil cation exchange capacity and therefore the nutrient effectiveness, and increasing the ability of soil to retain nutrients. The application of biochar (different types) has changed the original nutrient composition, microbial community, and enzyme activity of the soil, and under the combined action of these factors, the soil quality index (SQI) has been improved. This study provides a feasible soil fertility improvement strategy.
Collapse
Affiliation(s)
- Pengyuan Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Shuping Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Feijie Chen
- Zhejiang Geological Big Data Application Center Co., Ltd, Hangzhou 310000, China
| | - Tianxu Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Weijing Kong
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| |
Collapse
|
7
|
Du C, Xu R, Zhao X, Liu Y, Zhou X, Zhang W, Zhou X, Hu N, Zhang Y, Sun Z, Wang Z. Association between host nitrogen absorption and root-associated microbial community in field-grown wheat. Appl Microbiol Biotechnol 2023; 107:7347-7364. [PMID: 37747613 DOI: 10.1007/s00253-023-12787-8] [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: 04/05/2023] [Revised: 08/08/2023] [Accepted: 09/02/2023] [Indexed: 09/26/2023]
Abstract
Plant roots and rhizosphere soils assemble diverse microbial communities, and these root-associated microbiomes profoundly influence host development. Modern wheat has given rise to numerous cultivars for its wide range of ecological adaptations and commercial uses. Variations in nitrogen uptake by different wheat cultivars are widely observed in production practices. However, little is known about the composition and structure of the root-associated microbiota in different wheat cultivars, and it is not sure whether root-associated microbial communities are relevant in host nitrogen absorption. Therefore, there is an urgent need for systematic assessment of root-associated microbial communities and their association with host nitrogen absorption in field-grown wheat. Here, we investigated the root-associated microbial community composition, structure, and keystone taxa in wheat cultivars with different nitrogen absorption characteristics at different stages and their relationships with edaphic variables and host nitrogen uptake. Our results indicated that cultivar nitrogen absorption characteristics strongly interacted with bacterial and archaeal communities in the roots and edaphic physicochemical factors. The impact of host cultivar identity, developmental stage, and spatial niche on bacterial and archaeal community structure and network complexity increased progressively from rhizosphere soils to roots. The root microbial community had a significant direct effect on plant nitrogen absorption, while plant nitrogen absorption and soil temperature also significantly influenced root microbial community structure. The cultivar with higher nitrogen absorption at the jointing stage tended to cooperate with root microbial community to facilitate their own nitrogen absorption. Our work provides important information for further wheat microbiome manipulation to influence host nitrogen absorption. KEY POINTS: • Wheat cultivar and developmental stage affected microbiome structure and network. • The root microbial community strongly interacted with plant nitrogen absorption. • High nitrogen absorption cultivar tended to cooperate with root microbiome.
Collapse
Affiliation(s)
- Chenghang Du
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Runlai Xu
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Xuan Zhao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Ying Liu
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Xiaohan Zhou
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Wanqing Zhang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Xiaonan Zhou
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Naiyue Hu
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yinghua Zhang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Zhencai Sun
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China.
| | - Zhimin Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China.
| |
Collapse
|
8
|
Yan K, Zhang J, Cai Y, Cao G, Meng L, Soaud SA, Heakel RMY, Ihtisham M, Zhao X, Wei Q, Dai T, Abbas M, El-Sappah AH. Comparative analysis of endophytic fungal communities in bamboo species Phyllostachys edulis, Bambusa rigida, and Pleioblastus amarus. Sci Rep 2023; 13:20910. [PMID: 38017106 PMCID: PMC10684524 DOI: 10.1038/s41598-023-48187-1] [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: 06/23/2023] [Accepted: 11/23/2023] [Indexed: 11/30/2023] Open
Abstract
Fungal endophytes in plant leaf mesophyll form mutually beneficial associations through carbon assimilation, synthesis of biologically active chemicals, and enhancement of aesthetic and nutritional value. Here, we compared community structure, diversity, and richness of endophytic fungi in the leaves of three bamboo species, including Phyllostachys edulis (MZ), Bambusa rigida (KZ), and Pleioblastus amarus (YT) via high-throughput Illumina sequencing. In total, 1070 operational taxonomic units (OTUs) were retrieved and classified into 7 phylum, 27 classes, 82 orders, 185 families, 310 genus, and 448 species. Dominant genera were Cladosporium, Trichomerium, Hannaella, Ascomycota, Sporobolomyces, Camptophora and Strelitziana. The highest fungal diversity was observed in Pleioblastus amarus, followed by Bambusa rigida, and Phyllostachys edulis. Comparatively, monopodial species Ph. edulis and sympodial B. rigida, mixed P. amarus revealed the highest richness of endophytic fungi. We retrieved a few biocontrol agents, Sarocladium and Paraconiothyrium, and unique Sporobolomyces, Camptophora, and Strelitziana genera. FUNGuild analysis revealed the surrounding environment (The annual average temperature is between 15 and 25 °C, and the relative humidity of the air is above 83% all year round) as a source of fungal accumulation in bamboo leaves and their pathogenic nature. Our results provide precise knowledge for better managing bamboo forests and pave the way for isolating secondary metabolites and potential bioactive compounds.
Collapse
Affiliation(s)
- Kuan Yan
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Jian Zhang
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Yu Cai
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Guiling Cao
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Lina Meng
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Salma A Soaud
- Genetics Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
| | - Rania M Y Heakel
- Genetics Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
| | - Muhammad Ihtisham
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Xianming Zhao
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Qin Wei
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Tainfei Dai
- Sichuan Green Food Development Center, Chengdu, 610041, China.
| | - Manzar Abbas
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China.
| | - Ahmed H El-Sappah
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China.
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China.
- Genetics Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt.
| |
Collapse
|
9
|
Hu JP, Zhang MX, Lü ZL, He YY, Yang XX, Khan A, Xiong YC, Fang XL, Dong QM, Zhang JL. Grazing practices affect phyllosphere and rhizosphere bacterial communities of Kobresia humilis by altering their network stability. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165814. [PMID: 37517723 DOI: 10.1016/j.scitotenv.2023.165814] [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: 06/09/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 08/01/2023]
Abstract
The primary utilization strategy for meadow grasslands on the Qinghai-Tibet Plateau (QTP) is livestock grazing. This practice is considered as one of the major drivers of plant-associated bacterial community construction and changes in soil properties. The species of Kobresia humilis is considered as the most dominant one in grasslands. However, how different grazing practices affect the phyllosphere and rhizosphere bacterial communities of K. humilis is unknown. To address this issue, the effects of the grazing enclosure (GE), single-species grazing (YG and SG, representing yak only and sheep only, respectively), and different ratios of grazing (ratio of yak to sheep is 1:2, 1:4, and 1:6, represented by MG1:2, MG1:4, and MG1:6, respectively) on the dominant plant of K. humilis, it's phyllosphere and rhizosphere bacteria, and soil properties were investigated using artificially controlled grazing and grazing enclosure. Our data showed that grazing enclosure enhanced vegetation coverage, and rhizosphere bacterial richness and diversity, while reduced plant number and bacterial network stability of K. humilis. The NO3--N, K+, and Cl- concentrations were lower under grazing compared to GE. SG reduced the concentration of NH4+-N, TN, K+, and Na+ compared to YG. Moderate grazing intensity had a lower relative abundance of the r-strategists (Bacteroidota and Gammaproteobacteria) with higher bacterial network stability. Yak and sheep grazing showed reversed impacts on the bacterial network stability between the phyllosphere and rhizosphere of K. humilis. Proteobacteria and Actinobacteriota were identified in the molecular ecological network analysis as keystone taxa in the phyllosphere and rhizosphere networks, respectively, under all treatments. This study explained why sheep grazing has more adverse effects on grazing-tolerant grass species, K. humilis, than yak grazing, and will contribute to a better understanding of the impacts of different grazing practices and grazing enclosure on alpine grassland ecosystems on the QTP.
Collapse
Affiliation(s)
- Jin-Peng Hu
- Center for Grassland Microbiome; State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; Engineering Research Center of Grassland Industry, Ministry of Education; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ming-Xu Zhang
- Center for Grassland Microbiome; State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; Engineering Research Center of Grassland Industry, Ministry of Education; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Zhao-Long Lü
- Center for Grassland Microbiome; State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; Engineering Research Center of Grassland Industry, Ministry of Education; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yuan-Yuan He
- Center for Grassland Microbiome; State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; Engineering Research Center of Grassland Industry, Ministry of Education; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xiao-Xia Yang
- Qinghai Provincial Key Laboratory of Adaptive Management on Alpine Grassland, Qinghai Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining 810016, People's Republic of China
| | - Aziz Khan
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems; College of Ecology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - You-Cai Xiong
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems; College of Ecology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xiang-Ling Fang
- Center for Grassland Microbiome; State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; Engineering Research Center of Grassland Industry, Ministry of Education; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Quan-Min Dong
- Qinghai Provincial Key Laboratory of Adaptive Management on Alpine Grassland, Qinghai Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining 810016, People's Republic of China.
| | - Jin-Lin Zhang
- Center for Grassland Microbiome; State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; Engineering Research Center of Grassland Industry, Ministry of Education; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China.
| |
Collapse
|
10
|
Wang J, Cao H, Shi Y, Tian H, Yu F, Liu M, Gao L. Exposure to nitrate induced growth, intestinal histology and microbiota alterations of Bufo raddei Strauch tadpoles. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 258:106477. [PMID: 36948065 DOI: 10.1016/j.aquatox.2023.106477] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/18/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Nitrate (NO3-) is one of the ubiquitous environmental chemicals which multiplies negative impacts on aquatic life such as amphibian larvae. However, the data involving the dynamics of amphibians in response to NO3-N are scarce. This study investigated the effects of NO3-N on locomotor ability, growth performance, oxidative stress parameters, intestinal histology, and intestinal microbiota of Bufo raddei Strauch tadpoles. The tadpoles were chronically exposed to different concentrations of NO3-N (10, 50, 100, and 200 mg/L) from Gosner stage 26 to 38. Our results revealed that NO3-N exposure caused significantly reduced body weight and length, impaired locomotor activity, and severe oxidative damage to liver tissue. Moreover, the high NO3-N (50, 100, and 200 mg/L) exposure caused irregular arrangement and indistinct cell borders of mucosal epithelial cells in the tadpoles intestine. The NO3-N exposure significantly changed the structure of the intestinal microbiota. The phylum Cyanobacteria occupy the main niche of intestinal microbes and have a certain negative correlation with the growth and motility of tadpoles. In addition, the functional prediction revealed that NO3-N exposure obviously downregulated the metabolism of enzyme families in tadpoles. Our comprehensive research shows the toxicity of NO3-N exposure in B. raddei Strauch, explores the potential links between development and intestinal microbiota of tadpole, and provides a new framework for the potential health risk of nitrate in amphibians.
Collapse
Affiliation(s)
- Ji Wang
- School of Life Sciences, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Hanwen Cao
- School of Life Sciences, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Yongpeng Shi
- School of Life Sciences, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Huanbing Tian
- School of Life Sciences, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Feifei Yu
- School of Life Sciences, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China
| | - Mingxin Liu
- College of Chemical Engineering, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China.
| | - Lan Gao
- School of Life Sciences, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, Gansu Province, China.
| |
Collapse
|
11
|
Zheng H, Chai H, Zhao L, Liao Y, Cao X, Feng L, Ji F. Pretreatment of septic tank wastewater by packed anaerobic baffled reactor: Pollutant degradation and microbial community succession in different compartments. ENVIRONMENTAL RESEARCH 2023; 223:115475. [PMID: 36773635 DOI: 10.1016/j.envres.2023.115475] [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: 12/22/2022] [Revised: 01/17/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Anaerobic baffled reactor (ABR) is widely used in rural sewage treatment due to its unique structure, strong impact load resistance, and low energy consumption. However, there is a lack of research on pollutant degradation patterns and microbial community succession patterns in each compartment of ABR. In this study, a packed anaerobic baffled reactor (PABR) was constructed. The effects of T and HRT on the pollutant removal performance of PABR were investigated, and the pollutant degradation and microbial community succession in different compartments of PABR were studied. The results show that the removal rates of COD, NH4+-N, and TN of PABR can reach 85.54 ± 1.08%, 16.94 ± 1.01%, and 5.64 ± 1.18% respectively, and PABR has a good pollutant removal effect. With the extension of HRT, the COD removal rate of PABR increases steadily, and the NH4+-N and TN removal rate of PABR increases to a certain extent. The recommended HRT is 72 h. T has a significant impact on the COD removal effect of PABR. The increase of T in a certain range is conducive to the removal of pollutants by PABR. The COD removal rate of PABR decreases gradually along the flow direction, and the removal of organic matter is mainly concentrated in the first compartment. PABR has good removal capacity for CODss and better nitrogen removal capacity compared with traditional ABR. The richness and diversity of the microbial community in PABR increased gradually along the flow direction. The bacterial species in each compartment were similar but the proportion was different, showing the characteristics of multi-stage and separated phase operation. This study provides a new reference for the application of ABR in rural sewage treatment.
Collapse
Affiliation(s)
- Hao Zheng
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China
| | - HongXiang Chai
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China
| | - Liuwei Zhao
- China Southwest Architectural Design and Research Institute Corp., Ltd, 866 North Section of Tianfu Avenue, Sichuan, 610041, China
| | - Yong Liao
- Dongfang Electric Machinery Co., Ltd., Deyang, 618000, China
| | - Xuekang Cao
- China Municipal Engineering Southwest Design and Research Institute Co., Ltd., Chengdu, 266000, China
| | - Lihua Feng
- Chengdu Engineering Consulting Co., Ltd., Chengdu, 610072, China
| | - Fangying Ji
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China.
| |
Collapse
|
12
|
Kou B, He Y, Wang Y, Qu C, Tang J, Wu Y, Tan W, Yuan Y, Yu T. The relationships between heavy metals and bacterial communities in a coal gangue site. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 322:121136. [PMID: 36736561 DOI: 10.1016/j.envpol.2023.121136] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 01/18/2023] [Accepted: 01/21/2023] [Indexed: 06/18/2023]
Abstract
Coal is the main source of energy for China's economic development, but coal gangue dumps are a major source of heavy metal pollution. Bacterial communities have a major effect on the bioremediation of heavy metals in coal gangue dumps. The effects of different concentrations of heavy metals on the composition of bacterial communities in coal gangue sites remain unclear. Soil bacterial communities from four gangue sites that vary in natural heavy metal concentrations were investigated using high-throughput sequencing in this study. Correlations among bacterial communities, heavy metal concentrations, physicochemical properties of the soil, and the composition of dissolved organic matter of soil in coal gangue dumps were also analyzed. Our results indicated that Actinobacteriota, Proteobacteria, Chloroflexi, Acidobacteriota, and Gemmatimonadota were the bacterial taxa most resistant to heavy metal stress at gangue sites. Heavy metal contamination may be the main cause of changes in bacterial communities. Heavy metal pollution can foster mutually beneficial symbioses between microbial species. Microbial-derived organic matter was the main source of soil organic matter in unvegetated mining areas, and this could affect the toxicity and transport of heavy metals in soil. Polar functional groups such as hydroxyl and ester groups (A226-400) play an important role in the reaction of cadmium (Cd) and lead (Pb), and organic matter with low molecular weight (SR) tends to bind more to mercury (Hg). In addition to heavy metals, the content of nitrogen (N), phosphorus (P), and total organic carbon (TOC) also affected the composition of the bacterial communities; TOC had the strongest effect, followed by N, SOM, and P. Our findings have implications for the microbial remediation of heavy metal-contaminated soils in coal gangue sites and sustainable development.
Collapse
Affiliation(s)
- Bing Kou
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Yue He
- Beijing Guozhong Biotechnology Co., LTD, Beijing, 102211, China
| | - Yang Wang
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Chengtun Qu
- College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Jun Tang
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Yuman Wu
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
| | - Wenbing Tan
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Ying Yuan
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Tingqiao Yu
- International Education College, Beijing Vocational College of Agriculture, Beijing, 102442, China
| |
Collapse
|
13
|
Yang F, Fu Q, Antonietti M. Anthropogenic, Carbon-Reinforced Soil as a Living Engineered Material. Chem Rev 2023; 123:2420-2435. [PMID: 36633446 PMCID: PMC9999422 DOI: 10.1021/acs.chemrev.2c00399] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
In recent years, the simple synthesis of artificial humic substances (A-HS) by alkaline hydrothermal processing of waste biomass was described. This A-HS was shown to support water and mineral binding, to change soil structure, to avoid fertilizer mineralization, and to support plant growth. Many of the observed macroscopic effects could, however, not be directly related to the minute amounts of A-HS which have been added, and an A-HS stimulated microbiome was found to be the key for understanding. In this review, we describe such anthropogenic soil in the language of the modern concept of living engineered materials and identify natural and artificial HS as the enabler to set up the interactive microbial system along the interfaces of the mineral grains. In that, old chemical concepts as surface activity, redox mediation, and pH buffering are the base of the system structure build-up and the complex self-adaptability of biological systems. The resulting chemical/biological hybrid system has the potential to address world problems as soil fertility, nutrition of a growing world population, and climate change.
Collapse
Affiliation(s)
- Fan Yang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.,Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China
| | - Qiang Fu
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Markus Antonietti
- Department of Colloid Chemistry,Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany
| |
Collapse
|
14
|
Li M, Li S, Chen S, Meng Q, Wang Y, Yang W, Shi L, Ding F, Zhu J, Ma R, Guo X. Measures for Controlling Gaseous Emissions during Composting: A Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3587. [PMID: 36834281 PMCID: PMC9964147 DOI: 10.3390/ijerph20043587] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/11/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Composting is a promising technology for treating organic solid waste. However, greenhouse gases (methane and nitrous oxide) and odor emissions (ammonia, hydrogen sulfide, etc.) during composting are practically unavoidable, leading to severe environmental problems and poor final compost products. The optimization of composting conditions and the application of additives have been considered to mitigate these problems, but a comprehensive analysis of the influence of these methods on gaseous emissions during composting is lacking. Thus, this review summarizes the influence of composting conditions and different additives on gaseous emissions, and the cost of each measure is approximately evaluated. Aerobic conditions can be achieved by appropriate process conditions, so the contents of CH4 and N2O can subsequently be effectively reduced. Physical additives are effective regulators to control anaerobic gaseous emissions, having a large specific surface area and great adsorption performance. Chemical additives significantly reduce gaseous emissions, but their side effects on compost application must be eliminated. The auxiliary effect of microbial agents is not absolute, but is closely related to the dosage and environmental conditions of compost. Compound additives can reduce gaseous emissions more efficiently than single additives. However, further study is required to assess the economic viability of additives to promote their large-scale utilization during composting.
Collapse
Affiliation(s)
- Minghan Li
- College of Resource and Environment, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shandong Agricultural University, Tai’an 271018, China
- SDAU Fertilizer Science & Technology Co., Ltd., Tai’an 271608, China
| | - Shuyan Li
- College of Resource and Environment, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shandong Agricultural University, Tai’an 271018, China
| | - Shigeng Chen
- SDAU Fertilizer Science & Technology Co., Ltd., Tai’an 271608, China
| | - Qingyu Meng
- SDAU Fertilizer Science & Technology Co., Ltd., Tai’an 271608, China
| | - Yu Wang
- SDAU Fertilizer Science & Technology Co., Ltd., Tai’an 271608, China
| | - Wujie Yang
- Shandong Agricultural Technology Extension Center, Jinan 250014, China
| | - Lianhui Shi
- College of Resource and Environment, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shandong Agricultural University, Tai’an 271018, China
| | - Fangjun Ding
- SDAU Fertilizer Science & Technology Co., Ltd., Tai’an 271608, China
| | - Jun Zhu
- SDAU Fertilizer Science & Technology Co., Ltd., Tai’an 271608, China
| | - Ronghui Ma
- Shandong Agricultural Technology Extension Center, Jinan 250014, China
| | - Xinsong Guo
- SDAU Fertilizer Science & Technology Co., Ltd., Tai’an 271608, China
| |
Collapse
|
15
|
Lin Q, Xu Z, Li M, Wang Y, Li L. Spatial differences in Casuarina equisetifolia L. endophyte community structure. ANN MICROBIOL 2022. [DOI: 10.1186/s13213-022-01685-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Purpose
Casuarina equisetifolia, a fast-growing, abundant tree species on the southeastern coast of China, plays an important role in protecting the coastal environment, but the ecological processes that govern microbiome assembly and within-plant microorganism transmission are poorly known.
Methods
In this paper, we used ITS and 16S amplification techniques to study the diversity of fungal and bacterial endophytes in critical plant parts of this species: seeds, branchlets, and roots. Additionally, we examined the litter of this species to understand the process of branchlets from birth to litter.
Result
We uncovered a non-random distribution of endophyte diversity in which branchlets had the greatest and seeds had the lowest endophytic fungal diversity. In contrast, litter endophytic bacteria had the highest diversity, and branchlets had the lowest diversity. As for fungi, a large part of the seed microbiome was transmitted to the phyllosphere, while a large part of the bacterial microbiome in the seed was transmitted to the root.
Conclusion
Our study provides comprehensive evidence on diversity, potential sources, and transmission pathways for non-crop microbiome assembly and has implications for the management and manipulation of the non-crop microbiome in the future.
Collapse
|
16
|
Pseudomonas stutzeri Immobilized Sawdust Biochar for Nickel Ion Removal. Catalysts 2022. [DOI: 10.3390/catal12121495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Nickel ions generated from the electroplating industry and stainless steel and battery manufacturing industries contribute to water pollution, harm human health, and pose environmental risks. A long-term, sustainable, and efficient treatment method should be developed to address this issue. Bioremediation in the presence of biochar and microorganisms is a potential approach for metal ion abatement. This study evaluates the feasibility of Pseudomonas stutzeri immobilized sawdust biochar (PSDB) for Ni2+ removal. Sawdust biochar was prepared by pyrolyzing in a muffle furnace and was characterized using SEM, FTIR, and BET. The influence of biochar preparation parameters such as pyrolysis temperature, time on biochar yield, and impact on cell immobilization was investigated. The effect of various parameters, such as incubation time, pH, temperature, and biocatalyst dosage, was studied. The total Ni2+ in solution was analyzed using inductively coupled plasma optical emission spectrometry. PSDB showed an 83% Ni2+ removal efficiency and reusability up to three cycles. FT-IR analysis revealed that the mechanism of Ni2+ removal by PSDB was the synergistic effect of adsorption by biochar and bioaccumulation by P. stutzeri. This study presents a novel approach for environmental application by utilizing waste biomass-derived biochar as a carrier support for bacteria and an adsorbent for pollutants.
Collapse
|
17
|
Li X, Zhao Y, Xu A, Chang H, Lin G, Li R. Conductive biochar promotes oxygen utilization to inhibit greenhouse gas emissions during electric field-assisted aerobic composting. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156929. [PMID: 35753460 DOI: 10.1016/j.scitotenv.2022.156929] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/19/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
The insufficient oxygen supply in partial materials commonly results in significant greenhouse gas emissions during composting, which is essentially attributed to the poor electron transfer in the composting systems. Electric field-assisted aerobic composting (EAC) is considered effective in mitigation of greenhouse gas emissions, but the poor conductivity of composting materials hampers its efficiency and applicability. In this study, conductive biochar was added in the EAC system to investigate its effects on the performance and greenhouse gas emissions during the composting processes. In the system of EAC with biochar, the electrochemical properties, O2 utilization and composting performance were improved compared to the systems without biochar or assisted electric field. The maximum current of EAC with biochar was 0.32 A, higher than that without biochar (0.28A). Particularly, the peak concentrations of CH4 and N2O in the EAC system with biochar were 0.86 mg·kg-1 and 1.43 mg·kg-1, which were 45 % and 27 % lower than those in the EAC without biochar, respectively. The direct global warming potential attributed to CO2, CH4, and N2O was 3.96 g CO2-equivalent·kg-1 dry mass, providing a 31.6 % reduction compared to conventional composting. Microbial analyses revealed that biochar increased the relative abundance of electroactive bacteria including Bacillus, Tepidimicrobium and Corynebacterium. In contrast, the abundances of potential nitrifying and denitrifying bacterial species of Pseudomonas, Corynebacterium, Acinetobacter, and Bacillus were significantly lowered in the biochar-assisted EAC system (11.35 %). The results showed that the addition of biochar was able to promote the electrical conductivity of composting materials and accelerate the organic oxidation process by increasing O2 consumption, and accordingly change the dominant microbial community on both composting and biochar particles. This study verified the mechanism of the effectiveness of biochar in greenhouse gas control in composting processes, and thus provided evidence for facilitating the sustainable development of composting technologies.
Collapse
Affiliation(s)
- Xiang Li
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yan Zhao
- School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Ankun Xu
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Huiming Chang
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Guangnv Lin
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Rong Li
- School of Environment, Beijing Normal University, Beijing 100875, China
| |
Collapse
|
18
|
Yu Y, Xiong Z, Huang B, Wang X, Du Y, He C, Liu Y, Yao G, Lai B. Synchronous removal of pharmaceutical contaminants and inactivation of pathogenic microorganisms in real hospital wastewater by electro-peroxone process. ENVIRONMENT INTERNATIONAL 2022; 168:107453. [PMID: 35961271 DOI: 10.1016/j.envint.2022.107453] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/07/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Herein, a highly efficient electro-peroxone (E-peroxone) process with graphite felt as ozone diffusion electrode (ODE) was developed for the synchronous removal of pharmaceutical contaminants and inactivation of pathogenic microorganisms in real hospital wastewater. Under optimal conditions, the total organic carbon (TOC) removal rate of real hospital wastewater could reach 93.9%. Importantly, 126 pharmaceutical compounds (antibiotics, antivirals, analgesics, antiepileptics, hormones, and others) were determined in hospital wastewater by using ultra performance liquid chromatography combined with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS/MS). 110 pharmaceutical compounds could be efficiently degraded in E-peroxone system. Concurrently, the microbial community analysis through high-throughput sequencing showed that E-peroxone process exhibited an excellent disinfection effect in real hospital wastewater. Escherichia coli as a bacterial indicator could be completely inactivated in E-peroxone process·H2O2 and hydroxyl radical (OH) were found in E-peroxone system based on the results of chemical probe experiments and electron paramagnetic resonance (EPR) analysis. The in-situ generation of H2O2 from cathodic oxygen reduction in ODE can react with ozone to produce OH, and realize high efficiencies for the elimination of pharmaceutical and sterilization. This work established a green and effective way without extra addition of chemical reagents for high-efficiency treatment of real hospital wastewater.
Collapse
Affiliation(s)
- Yahan Yu
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China
| | - Zhaokun Xiong
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, China.
| | - Bingkun Huang
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China
| | - Xinhao Wang
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China
| | - Ye Du
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China
| | - Chuanshu He
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, China
| | - Yang Liu
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, China
| | - Gang Yao
- Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Institute of Environmental Engineering, RWTH Aachen University, Germany
| | - Bo Lai
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Sino-German Centre for Water and Health Research, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University, Yibin, China; Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province, Haitian Water Group, China.
| |
Collapse
|
19
|
Zhang Y, Bo G, Shen M, Shen G, Yang J, Dong S, Shu Z, Wang Z. Differences in microbial diversity and environmental factors in ploughing-treated tobacco soil. Front Microbiol 2022; 13:924137. [PMID: 36171748 PMCID: PMC9511222 DOI: 10.3389/fmicb.2022.924137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 08/19/2022] [Indexed: 11/16/2022] Open
Abstract
During agricultural production, plowing affects the existing traits of the planted soil, including environmental factors (physicochemical properties and soil enzymatic activity) and microbial community, but whether deep tillage and conventional tillage cause differences in soil microecology are unknown. In this study, the 16S rRNA high-throughput sequencing technology was combined with soil environmental factor detection to analyze the differences in microbial diversity of smokey soils at different depths. As a result, the composition and structure of microbial community varied in different soil depth after plowing. Two dominant phyla, Actinobacteria and Acidobacteria, have varied a lot between the deep-plowing treatment HS3 (the sample in 10–20 cm depth after deep-plowing treatment) sample and the conventional tillage HC3 (treatment the sample in 10–20 cm depth after conventional tillage) sample. The abundance of Actinobacteria has increased significantly, while the abundance of Acidobacteria has decreased significantly. Moreover, deep tillage increased the activity of sucrase (S-SC) and nitrate reductase (NR) in samples with soil depth below 20 cm. In summary, deep tillage disturbed spatial microbial diversity and environmental factors significantly. This would provide new guidance for improving farmland management strategies, optimizing the activation methods of soil layers, further improving crop planting soil, and increasing crop yield.
Collapse
Affiliation(s)
- Yuzhen Zhang
- Energy-Rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Guodong Bo
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
- Guodong Bo,
| | - Minchong Shen
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Guoming Shen
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Jianming Yang
- Energy-Rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Shanyu Dong
- Yichang Tobacco Company of Hubei Province, Yichang, China
| | - Zhaohe Shu
- Enshi Tobacco Company of Hubei Province, Enshi, China
- Zhaohe Shu,
| | - Zhaobao Wang
- Energy-Rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Laboratory of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
- *Correspondence: Zhaobao Wang,
| |
Collapse
|
20
|
Pan Y, Kang P, Tan M, Hu J, Zhang Y, Zhang J, Song N, Li X. Root exudates and rhizosphere soil bacterial relationships of Nitraria tangutorum are linked to k-strategists bacterial community under salt stress. FRONTIERS IN PLANT SCIENCE 2022; 13:997292. [PMID: 36119572 PMCID: PMC9471988 DOI: 10.3389/fpls.2022.997292] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
When plants are subjected to various biotic and abiotic stresses, the root system responds actively by secreting different types and amounts of bioactive compounds, while affects the structure of rhizosphere soil bacterial community. Therefore, understanding plant-soil-microbial interactions, especially the strength of microbial interactions, mediated by root exudates is essential. A short-term experiment was conducted under drought and salt stress to investigate the interaction between root exudates and Nitraria tangutorum rhizosphere bacterial communities. We found that drought and salt stress increased rhizosphere soil pH (9.32 and 20.6%) and electrical conductivity (1.38 and 11 times), respectively, while decreased organic matter (27.48 and 31.38%), total carbon (34.55 and 29.95%), and total phosphorus (20 and 28.57%) content of N. tangutorum rhizosphere soil. Organic acids, growth hormones, and sugars were the main differential metabolites of N. tangutorum under drought and salt stress. Salt stress further changed the N. tangutorum rhizosphere soil bacterial community structure, markedly decreasing the relative abundance of Bacteroidota as r-strategist while increasing that of Alphaproteobacteria as k-strategists. The co-occurrence network analysis showed that drought and salt stress reduced the connectivity and complexity of the rhizosphere bacterial network. Soil physicochemical properties and root exudates in combination with salt stress affect bacterial strategies and interactions. Our study revealed the mechanism of plant-soil-microbial interactions under the influence of root exudates and provided new insights into the responses of bacterial communities to stressful environments.
Collapse
Affiliation(s)
- Yaqing Pan
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
| | - Peng Kang
- College of Biological Sciences and Engineering, North Minzu University, Yinchuan, China
| | - Min Tan
- College of Biological Sciences and Engineering, North Minzu University, Yinchuan, China
| | - Jinpeng Hu
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Yinchuan, China
| | - Yaqi Zhang
- College of Biological Sciences and Engineering, North Minzu University, Yinchuan, China
| | - Jinlin Zhang
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Yinchuan, China
| | - Naiping Song
- Breeding Base for Key Laboratory Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan, China
| | - Xinrong Li
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
| |
Collapse
|
21
|
Li C, Zhang W, Wu X, Cai Q, Tan Z, Hong Z, Huang S, Yuan Y, Yao L, Zhang L. Aromatic-turmerone ameliorates DSS-induced ulcerative colitis via modulating gut microbiota in mice. Inflammopharmacology 2022; 30:1283-1294. [PMID: 35794287 DOI: 10.1007/s10787-022-01007-w] [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: 03/01/2022] [Accepted: 05/11/2022] [Indexed: 11/05/2022]
Abstract
Curcuma longa L. is one of the traditional Chinese herbs in the list of medicinal and food homology. Aromatic-turmerone is the main ingredient in turmeric essential oil. The aim of the present study is to investigate the treatment of Aromatic-turmerone on DSS-included colitis and its regulatory effect on intestinal flora disorder. Male KM mice supplemented with different concentration of aromatic-turmerone and mesalazine are subjected to 2% DSS in drinking water to induce colitis. Colon and cecum contents were collected for colitis lesion evaluation and inflammation-related gene analysis and colon contents for gut microbiota. The results show that treatments with Aromatic-turmerone significantly prevents colon shortening, alleviates the damage of colonic tissue, and reduces colonic inflammatory cytokines TNF-α and COX-2. Furthermore, the 16S rDNA gene sequence data indicate that Aromatic-turmerone improve the abundance of bacterial species, maintain some beneficial bacteria, and reduce harmful bacteria. Aromatic-turmerone downregulates the colonic inflammatory cytokines and modulates the abundance of intestinal flora, which is conductive to ameliorates DSS-induced colitis. Regularly intake of the edible herb may be help to prevent ulcerative colitis-related diseases.
Collapse
Affiliation(s)
- Chunlian Li
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Weicheng Zhang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Xianyi Wu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Qiuyang Cai
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zekai Tan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zhengyi Hong
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Shiyuan Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yanghe Yuan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Lewen Yao
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China
| | - Lanyue Zhang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, China. .,Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou, China.
| |
Collapse
|
22
|
Cao D, Lou Y, Jiang X, Zhang D, Liu J. Fungal Diversity in Barley Under Different Storage Conditions. Front Microbiol 2022; 13:895975. [PMID: 35814699 PMCID: PMC9257103 DOI: 10.3389/fmicb.2022.895975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 05/11/2022] [Indexed: 11/21/2022] Open
Abstract
The diversity of fungi in barley in simulated storage environments was analyzed. Barley was stored at different temperatures (15, 25, 35°C) and relative humidity (55, 65, 75, 85 RH) for 180 and 360 days. Alpha diversity, beta diversity, species composition, and species differences were analyzed using Illumina HiSeq technology. The fungal communities in all barley samples before and after storage belonged to 3 phyla, 18 classes, 39 orders, 71 families, 103 genera, and 152 species. The relative abundance of the dominant phylum Ascomycota was 77.98–99.19%. The relative abundance of Basidiomycota was 0.77–21.96%. At the genus level, the dominant genera of fungi in barley initially included Fusarium, Aspergillus, Microdochium, Alternaria, and Epicoccum. After 360 days of storage, the dominant genera became Epicoccum, Alternaria, Bipolar, Cladosporium, Fusarium, and Aspergillus. According to Venn diagrams and principal coordinates analysis, the fungal community diversity in barley initially was much higher than in barley stored at different temperatures and humidity. The application of PLS-DA could accurately distinguish between barley stored for 180 and 360 days. Some high-temperature and high-humidity environments accelerated storage. The dominant genera differed in different storage conditions and constantly changed with increasing storage duration. Epicoccum was one of the dominant genera after longer storage periods. This study provides theoretical support for optimizing safe storage conditions in barley.
Collapse
Affiliation(s)
- Dongmei Cao
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
- National Coarse Cereals Engineering Research Center, Heilongjiang Bayi Agricultural University, Daqing, China
- Key Laboratory of Agro-Products Processing and Quality Safety of Heilongjiang Province, Daqing, China
- Heilongjiang Engineering Research Center for Coarse Cereals Processing and Quality Safety, Daqing, China
| | - Yuhao Lou
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Xiujie Jiang
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
- National Coarse Cereals Engineering Research Center, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Dongjie Zhang
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
- National Coarse Cereals Engineering Research Center, Heilongjiang Bayi Agricultural University, Daqing, China
- Key Laboratory of Agro-Products Processing and Quality Safety of Heilongjiang Province, Daqing, China
- Heilongjiang Engineering Research Center for Coarse Cereals Processing and Quality Safety, Daqing, China
- Heilongjiang Province Cultivating Collaborative Innovation Center for the Beidahuang Modern Agricultural Industry Technology, Daqing, China
- *Correspondence: Dongjie Zhang,
| | - Junmei Liu
- College of Food Science, Jilin Agricultural University, Daqing, China
- Junmei Liu,
| |
Collapse
|
23
|
Chew J, Joseph S, Chen G, Zhang Y, Zhu L, Liu M, Taherymoosavi S, Munroe P, Mitchell DRG, Pan G, Li L, Bian R, Fan X. Biochar-based fertiliser enhances nutrient uptake and transport in rice seedlings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 826:154174. [PMID: 35231505 DOI: 10.1016/j.scitotenv.2022.154174] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 01/14/2022] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Biochar-based compound fertilisers (BCF) are gaining increasing attention as they are cost-effectiveness and improve soil fertility and crop yield. However, little is known about the mechanisms by which micron-size BCF particles enhance crop growth. In the present study, Wuyunjing7 rice seedlings were exposed to micron-size particles of wheat straw-based BCF (mBCF) diffused through a 25-μm nylon mesh. The control was fertilised with urea, diammonium phosphate, and potassium chloride to ensure that both treatments received comparables level of N, P, and K. The effects of mBCF on rice seedling growth were evaluated by determining the changes in nitrogen uptake and utilisation via nitrogen content measurements, short-term 15N-NH4+ influx assays, and analyses of transcript-level nutrient transporter gene expression. The shoot biomass of rice seedling treated with mBCF at the rate of 5 mg/ g soil was 33% greater than that for the control. Root and shoot 15N accumulation rates were 44% and 14% higher, respectively, in the mBCF-treated than the control. The mBCF-treated rice seedlings had higher phosphorus, potassium, and iron content than the control. Moreover, the treatments significantly differed in terms of their nutrient transporter gene expression levels. Spectroscopy and microscopy were used to visualise nutrient distributions across transverse root sections. There were relatively higher iron oxide nanoparticle and silicon-based compound concentrations in the roots of the mBCF-treated rice seedlings than in those of the control. The foregoing difference might account for the fact that the growth of the mBCF-treated rice was superior to that of the control. We demonstrated that the mBCF treatment created a more negative electrical potential at the root epidermal cell layer (~ - 160 mV) than the root surface. This potential difference may have been the driving force for mineral nutrient absorption.
Collapse
Affiliation(s)
- JinKiat Chew
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Stephen Joseph
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; School of Materials Science and Engineering, University of NSW, Sydney, NSW 2052, Australia; Institute for Superconducting and Electronic Materials and School of Physics, University of Wollongong, NSW 2522, Australia
| | - Guanhong Chen
- Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Yuyue Zhang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Longlong Zhu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Minglong Liu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | | | - Paul Munroe
- School of Materials Science and Engineering, University of NSW, Sydney, NSW 2052, Australia
| | - David R G Mitchell
- Electron Microscopy Centre, AIIM Building, Innovation Campus, University of Wollongong, North Wollongong, NSW 2517, Australia
| | - Genxing Pan
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Lianqing Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Rongjun Bian
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaorong Fan
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| |
Collapse
|
24
|
Zhou Q, Ma K, Song Y, Wang Z, Fu Z, Wang Y, Zhang X, Cui M, Tang N, Xing X. Exploring the diversity of the fungal community in Chinese traditional Baijiu daqu starters made at low-, medium- and high-temperatures. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
25
|
Lin J, Yang Q, Guo J, Li M, Hao Z, He J, Li J. Gut Microbiome Alterations and Hepatic Metabolic Flexibility in the Gansu Zokor, Eospalax cansus: Adaptation to Hypoxic Niches. Front Cardiovasc Med 2022; 9:814076. [PMID: 35402538 PMCID: PMC8984292 DOI: 10.3389/fcvm.2022.814076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 02/17/2022] [Indexed: 11/13/2022] Open
Abstract
The Gansu zokor (Eospalax cansus), a typical subterranean rodent endemic to the Chinese Loess Plateau, spends almost its whole life in its self-constructed underground burrows and has strong adaptability to ambient hypoxia. Energy adaptation is the key to supporting hypoxia tolerance, and recent studies have shown that the intestinal microbiota has an evident effect on energy metabolism. However, how the gut microbiome of Gansu zokor will change in response to hypoxia and the metabolic role played by the microbiome have not been reported. Thus, we exposed Gansu zokors to severe hypoxia of 6.5% of O2 (6 or 44 h) or moderate hypoxia of 10.5% of O2 (44 h or 4 weeks), and then analyzed 16S rRNA sequencing, metagenomic sequencing, metagenomic binning, liver carbohydrate metabolites, and the related molecular levels. Our results showed that the hypoxia altered the microbiota composition of Gansu zokor, and the relative contribution of Ileibacterium to carbohydrate metabolism became increased under hypoxia, such as glycolysis and fructose metabolism. Furthermore, Gansu zokor liver enhanced carbohydrate metabolism under the short-term (6 or 44 h) hypoxia but it was suppressed under the long-term (4 weeks) hypoxia. Interestingly, under all hypoxia conditions, Gansu zokor liver exhibited enhanced fructose-driven metabolism through increased expression of the GLUT5 fructose transporter, ketohexokinase (KHK), aldolase B (ALDOB), and aldolase C (ALDOC), as well as increased KHK enzymatic activity and fructose utilization. Overall, our results suggest that the altered gut microbiota mediates the carbohydrate metabolic pattern under hypoxia, possibly contributing to the hepatic metabolic flexibility in Gansu zokor, which leads to better adaptation to hypoxic environments.
Collapse
|
26
|
Zhang M, Riaz M, Xia H, Li Y, Wang X, Jiang C. Four-year biochar study: Positive response of acidic soil microenvironment and citrus growth to biochar under potassium deficiency conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 813:152515. [PMID: 34968584 DOI: 10.1016/j.scitotenv.2021.152515] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 12/03/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
Biochar has direct or indirect effects on soil microorganisms, but the changes in soil metabolism are rarely monitored and analyzed. In addition, the potassium (K) effect of biochar has not attracted much attention. This study set up a four-year experiment with acid soil and citrus as the test soil and plants, respectively. The long-term effects of biochar on the acid soil microenvironment and citrus growth were explored from soil properties (nutrient contents, microbial communities, and metabolites) and citrus growth (nutrient contents, reactive oxygen species (ROS), and root endophytes). The results showed that the four-year amendment of biochar in acid soil was very significant, in which the soil pH was increased by 1 unit, organic matter and cation exchange capacity (CEC) increased by 120.77% and 16.21%, respectively. Biochar improved the K availability of soil by increasing the number and metabolic activity of Azotobacter and Pseudomonas, and finally effectively alleviated the K deficiency of citrus. From the perspective of available K content, 2% biochar reduced the 20% conventional K application rate. The pH, organic matter, and cation exchange capacity (CEC) were the most important factors affecting the bacterial community structure, while the fungal community was more sensitive to the change in the nutrient environment. Biochar mainly stimulated the progress of soil metabolism by affecting the metabolic activity of bacterial communities. Biochar application increased some of the beneficial bacteria in the soil, i.e., the relative abundance of Pseudarthrobacter increased by 700 times. However, biochar and exogenous K did not significantly affect arbuscular mycorrhizal fungi (AMF) and endophytic bacteria in citrus roots. In general, biochar has a long-term and positive response to the acidic soil microenvironment and citrus growth, as well as promotion value in the agricultural field.
Collapse
Affiliation(s)
- Mengyang Zhang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei Province 430070, PR China
| | - Muhammad Riaz
- Root Biology Center, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
| | - Hao Xia
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei Province 430070, PR China
| | - Yuxuan Li
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei Province 430070, PR China
| | - Xiangling Wang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei Province 430070, PR China
| | - Cuncang Jiang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei Province 430070, PR China; The Key Laboratory of Oasis Ecoagriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang 832000, PR China.
| |
Collapse
|
27
|
Huang M, Liu Y, Dong W, Zhao Q, Duan R, Cao X, Wan Y, Yin J, Yi M. Toxicity of Pb continuous and pulse exposure on intestinal anatomy, bacterial diversity, and metabolites of Pelophylax nigromaculatus in pre-hibernation. CHEMOSPHERE 2022; 290:133304. [PMID: 34919911 DOI: 10.1016/j.chemosphere.2021.133304] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 12/10/2021] [Accepted: 12/12/2021] [Indexed: 06/14/2023]
Abstract
Amphibians are often exposed to pulse pollution due to fluctuational inputs of pollutants in water. Traditional ecotoxicology research is mainly performed under constant exposure conditions, which is not consistent with the true environmental pollution. Frogs are sensitive to changes in water pollutants in pre-hibernation. Thus, to understand the toxicity difference to continuous and pulse exposure in environmental concentrations of Pb (100 μg/L), Pelophylax nigromaculatus adults were exposed to short-term treatments (8 days) in pre-hibernation. Individual mortality, intestinal anatomical structure, bacterial diversity, and metabolites were measured in a control group (CON), a Pb continuous treatment group (CEPb) and a Pb pulse treatment group (PEPb). The results showed that PEPb significantly increased individual mortality, compared to the control group and CEPb. PEPb induced pathological changes in the small intestinal tissues, such as mucosal erosion, swollen and distorted villi, large vacuoles, and the proliferation of goblet cells. In addition, PEPb altered the structure and diversity of intestinal bacteria, resulting in an increase in some pathogenic bacteria (e.g. Bacteroides and Ruminococcus) and a decrease in beneficial bacteria (e.g. Cetobacterium and Akkermansia). Both CEPb and PEPb significantly changed intestinal metabolites and metabolic pathways. Moreover, PEPb has a significant effect on the metabolism of amino acids by increasing the content of 5-Aminopentanoic acid, cis-4-Hydroxy-l-proline, Glycocholic acid, l-Alanine, and l-Isoleucine. We concluded that PEPb may lead to intestine impairment of P. nigromaculatus in pre-hibernation by inducing intestinal structural integrity destruction, bacterial imbalance, and metabolic dysfunction, resulting in a significant increase in mortality. The study provides new insights for understanding the intestinal responses of frogs to pulse metal exposure.
Collapse
Affiliation(s)
- Minyi Huang
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China
| | - Yang Liu
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China
| | - Wenjing Dong
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China
| | - Qiang Zhao
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China
| | - Renyan Duan
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China.
| | - Xiaohong Cao
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China
| | - Yuyue Wan
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China
| | - Jiawei Yin
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China
| | - Minghui Yi
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China
| |
Collapse
|
28
|
Yan K, Pei Z, Meng L, Zheng Y, Wang L, Feng R, Li Q, Liu Y, Zhao X, Wei Q, El-Sappah AH, Abbas M. Determination of Community Structure and Diversity of Seed-Vectored Endophytic Fungi in Alpinia zerumbet. Front Microbiol 2022; 13:814864. [PMID: 35295292 PMCID: PMC8918987 DOI: 10.3389/fmicb.2022.814864] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 01/06/2022] [Indexed: 11/20/2022] Open
Abstract
Endophytic fungi act as seed endosymbiont, thereby playing a very crucial role in the growth and development of seeds. Seed-vectored endophytic fungi establish an everlasting association with seeds and travel from generation to generation. To explore the composition and diversity of endophytic fungi in Alpinia zerumbet seeds, high-throughput Illumina MiSeq sequencing was employed for the following stages: fruit formation period (YSJ1), young fruit period (YSJ2), early mature period (YSJ3), middle mature period (YSJ4), and late mature period (YSJ5). A total of 906,694 sequence reads and 745 operational taxonomic units (OTUs) were obtained and further classified into 8 phyla, 30 classes, 73 orders, 163 families, 302 genera, and 449 species. The highest endophytic fungal diversity was observed at YSJ5. The genera with the highest abundance were Cladosporium, Kodamaea, Hannaella, Mycothermus, Gibberella, Sarocladium, and Neopestalotiopsis. Functional Guild (FUNGuild) analysis revealed that endophytic fungi were undefined saprotroph, plant pathogens, animal pathogen–endophyte–lichen parasite–plant pathogen–wood saprotroph, and soil saprotrophs. Alternaria, Fusarium, Cladosporium, and Sarocladium, which are potential probiotics and can be used as biocontrol agents, were also abundant. This study is part of the Sustainable Development Goals of United Nations Organization (UNO) to “Establish Good Health and Well-Being.”
Collapse
Affiliation(s)
- Kuan Yan
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Zihao Pei
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Lina Meng
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Yu Zheng
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Lian Wang
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Ruizhang Feng
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
| | - Quanzi Li
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
| | - Yang Liu
- College of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Xianming Zhao
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Qin Wei
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
- Qin Wei,
| | - Ahmed H. El-Sappah
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
- Genetics Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
- Ahmed H. El-Sappah,
| | - Manzar Abbas
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Sichuan Oil Cinnamon Engineering Technology Research Center, Yibin University, Yibin, China
- *Correspondence: Manzar Abbas,
| |
Collapse
|
29
|
Yu H, Huang L, Zhang G, Zhou P. Physiological metabolism of electrochemically active bacteria directed by combined acetate and Cd(II) in single-chamber microbial electrolysis cells. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127538. [PMID: 34736191 DOI: 10.1016/j.jhazmat.2021.127538] [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: 09/02/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
It is of great interest to explore physiological metabolism of electrochemically active bacteria (EAB) for combined organics and heavy metals in single-chamber microbial electrolysis cells (MECs). Four pure culture EAB varying degrees responded to the combined acetate (1.0-5.0 g/L) and Cd(II) (20-150 mg/L) at different initial concentrations in the single-chamber MECs, shown as significant relevance of Cd(II) removal (2.57-7.35 mg/L/h) and H2 production (0-0.0011 m3/m3/h) instead of acetate removal (73-130 mg/L/h), to these EAB species at initial Cd(II) below 120 mg/L and initial acetate below 3.0 g/L. A high initial acetate (5.0 g/L) compensated the Cd(II) inhibition and broadened the removal of Cd(II) to 150 mg/L. These EAB physiologically released variable amounts of extracellular polymeric substances with a compositional diversity in response to the changes of initial Cd(II) and circuital current whereas the activities of typical intracellular enzymes were more apparently altered by the initial Cd(II) than the circuital current. These results provide experimental validation of the presence, the metabolic plasticity and the physiological response of these EAB directed by the changes of initial Cd(II) and acetate concentrations in the single-chamber MECs, deepening our understanding of EAB physiological coping strategies in metallurgical microbial electro-ecological cycles.
Collapse
Affiliation(s)
- Haihang Yu
- Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Liping Huang
- Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
| | - Guoquan Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Peng Zhou
- College of Chemistry, Dalian University of Technology, Dalian 116024, China
| |
Collapse
|
30
|
Su WQ, Tang C, Lin J, Yu M, Dai Z, Luo Y, Li Y, Xu J. Recovery patterns of soil bacterial and fungal communities in Chinese boreal forests along a fire chronosequence. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 805:150372. [PMID: 34818758 DOI: 10.1016/j.scitotenv.2021.150372] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/11/2021] [Accepted: 09/12/2021] [Indexed: 05/17/2023]
Abstract
Wildfire has profound and pervasive consequences for forest ecosystems via directly altering soil physicochemical properties and modulating microbial community. In this study, we examined the changes in soil properties and microbial community composition and structure at different periods after highly severe wildfire events (44 plots, 113 samples) in the Chinese Great Khingan Mountains. We also separated charcoal from burnt soils to establish the relationship between microbial community structures in soils and charcoal. We found that wildfire only significantly altered bacterial and fungal β-diversity, but had no effect on microbial α-diversity across a 29-year chronosequence. The network analysis revealed that the complexity and connectivity of bacterial and fungal communities were significantly increased from 17 years after fire, compared with either unburnt soils or soils with recent fires (0-4 years after fire). Differential abundance analysis suggested that bacterial and fungal OTUs were enriched or depleted only during 0-4 years after fire compared with the unburnt soils. In addition, soil pH, dissolved organic C and dissolved organic N were key determinants of soil bacterial and fungal communities during 17-29 years after fire. The fire-derived charcoal provided a new niche for microbial colonization, and microbes colonized in the charcoal had a significantly different community structure from those of burnt soils. Our data suggest that soil bacterial and fungal communities changed significantly during the recovery from fire events in terms of the abundance and co-occurrence networks in the boreal forest ecosystems.
Collapse
Affiliation(s)
- Wei-Qin Su
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Caixian Tang
- Department of Animal, Plant and Soil Sciences, La Trobe University, Melbourne Campus, Bundoora, VIC 3086, Australia
| | - Jiahui Lin
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Mengjie Yu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Zhongmin Dai
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Yu Luo
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Yong Li
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Jianming Xu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China.
| |
Collapse
|
31
|
Tang C, Yang F, Antonietti M. Carbon Materials Advancing Microorganisms in Driving Soil Organic Carbon Regulation. RESEARCH (WASHINGTON, D.C.) 2022; 2022:9857374. [PMID: 35098139 PMCID: PMC8777470 DOI: 10.34133/2022/9857374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 12/10/2021] [Indexed: 12/20/2022]
Abstract
Carbon emission from soil is not only one of the major sources of greenhouse gases but also threatens biological diversity, agricultural productivity, and food security. Regulation and control of the soil carbon pool are political practices in many countries around the globe. Carbon pool management in engineering sense is much bigger and beyond laws and monitoring, as it has to contain proactive elements to restore active carbon. Biogeochemistry teaches us that soil microorganisms are crucial to manage the carbon content effectively. Adding carbon materials to soil is thereby not directly sequestration, as interaction of appropriately designed materials with the soil microbiome can result in both: metabolization and thereby nonsustainable use of the added carbon, or-more favorably-a biological amplification of human efforts and sequestration of extra CO2 by microbial growth. We review here potential approaches to govern soil carbon, with a special focus set on the emerging practice of adding manufactured carbon materials to control soil carbon and its biological dynamics. Notably, research on so-called "biochar" is already relatively mature, while the role of artificial humic substance (A-HS) in microbial carbon sequestration is still in the developing stage. However, it is shown that the preparation and application of A-HS are large biological levers, as they directly interact with the environment and community building of the biological soil system. We believe that A-HS can play a central role in stabilizing carbon pools in soil.
Collapse
Affiliation(s)
- Chunyu Tang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
- Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China
| | - Fan Yang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
- Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China
| | - Markus Antonietti
- Max Planck Institute of Colloids and Interfaces Department of Colloid Chemistry, 14476 Potsdam, Germany
| |
Collapse
|
32
|
Pan Y, Kang P, Hu J, Song N. Bacterial community demonstrates stronger network connectivity than fungal community in desert-grassland salt marsh. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 798:149118. [PMID: 34332392 DOI: 10.1016/j.scitotenv.2021.149118] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/12/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
The diversity of soil bacterial and fungal communities is closely related to the soil characteristics and vegetation types in salt marsh ecosystems, but the biogeographic patterns and driving factors in desert-grassland salt marsh (DGSM) are still unclear. In this study, we divided sample plots according to the dominant species in Jiantan Lake wetland of a typical DGSM in Northwestern China. The effects of different environmental factors and halophytes on the structure of soil bacterial and fungal communities were investigated using soil physicochemical characterization and high-throughput sequencing analysis. The diversity of bacterial communities in bulk soil and three dominant halophytes (Kalidium cuspidatum, Nitraria tangutorum and Sophora alopecuroides) were the main factors affecting soil physicochemical properties and halophyte vegetation coverage. Proteobacteria, Bacteroides and Gemmatimonadetes had the highest abundance in bulk soil and the lowest in Sophora alopecuroides sample soil; the opposite was true for Acidobacteria and Chloroflexi. The abundance of Ascomycota in bulk soil and Sophora alopecuroides sample soil was higher than Kalidium cuspidatum and Nitraria tangutorum sample soils, whereas the Mortierellomycota was the highest in Nitraria tangutorum sample soil. Co-occurrence network analysis showed that halophyte cover increased the connectivity and complexity of the bacterial-fungal interaction network, and the halophytic shrub sample soil had a more stable network relationship than the halophytic herb soil. The key taxa of each plot were identified through network relationships. It was found that the keystone taxa of Proteobacteria, Firmicutes, Ascomycota and Chytridiomycota played important roles in maintaining community functions, and most of them were not significantly influenced by soil physicochemical properties. The results of this study provide new insights for a deeper understanding of the halophytes that drive the multifunctionality and stability of soil ecosystems in DGSM.
Collapse
Affiliation(s)
- Yaqing Pan
- College of Agriculture, Ningxia University, Yinchuan 750021, Ningxia, China; Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of Northwest China, Yinchuan 750021, Ningxia, China; Key Laboratory for Restoration and Reconstruction of Degraded Ecosystems in Northwest China, Ministry of Education, Ningxia University, Yinchuan 750021, China
| | - Peng Kang
- College of Biological Sciences and Engineering, North Minzu University, Yinchuan 750021, China; Ningxia Key Laboratory for the Development and Application of Microbial Resources in Extreme Environments, North Minzu University, Yinchuan 750021, China
| | - Jinpeng Hu
- College of Biological Sciences and Engineering, North Minzu University, Yinchuan 750021, China
| | - Naiping Song
- College of Agriculture, Ningxia University, Yinchuan 750021, Ningxia, China; Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of Northwest China, Yinchuan 750021, Ningxia, China; Key Laboratory for Restoration and Reconstruction of Degraded Ecosystems in Northwest China, Ministry of Education, Ningxia University, Yinchuan 750021, China.
| |
Collapse
|
33
|
Bai HY, Zhang AY, Mei Y, Xu M, Lu XL, Dai CC, Jia Y. Effects of ectomycorrhizal fungus bolete identity on the community assemblages of endofungal bacteria. ENVIRONMENTAL MICROBIOLOGY REPORTS 2021; 13:852-861. [PMID: 34494716 DOI: 10.1111/1758-2229.13007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
Ectomycorrhiza-associated bacteria, especially endofungal bacterial microbiota (EBM) in the fruiting body, play important roles in driving the establishment and function of ectomycorrhizae. However, the influence of ectomycorrhizal fungus bolete identity on their EBM is still unclear. We analysed the EBM of three different bolete fruiting body species on Thousand Island Lake, including Tylopilus felleus, Tylopilus areolatus and Boletus queletii, and compared them with their corresponding mycosphere soil bacterial microbiota by high-throughput sequencing. The EBM was classified into Bacillus, Pseudomonas, Burkholderia and Stenotrophomonas genera. Proteobacteria, Bacteroidetes and Acidobacteria were predominant in the EBM of bolete fruiting bodies as well as their mycosphere soil, while Firmicutes was significantly higher in the EBM. Moreover, the core microbiome (342 operational taxonomic units) of the EBM was shared among the three bolete fungal species. The relative abundances of gene families related to cell cycle control and nucleotide, coenzyme and lipid metabolism were significantly higher in the EBM than in the corresponding mycosphere soil bacterial microbiota, but there was no difference among the three different boletes. The results suggested that the host identity of ectomycorrhizal fungus boletes could affect the EBM, which might be mainly due to the selection of host fungi for the different functional EBM needed.
Collapse
Affiliation(s)
- Hong-Yan Bai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Ai-Yue Zhang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Yan Mei
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Man Xu
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Xiao-Lin Lu
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Chuan-Chao Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Yong Jia
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| |
Collapse
|
34
|
Fu T, Shangguan H, Wu J, Tang J, Yuan H, Zhou S. Insight into the synergistic effects of conductive biochar for accelerating maturation during electric field-assisted aerobic composting. BIORESOURCE TECHNOLOGY 2021; 337:125359. [PMID: 34126360 DOI: 10.1016/j.biortech.2021.125359] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 06/12/2023]
Abstract
Electric field-assisted aerobic composting (EAC) has been considered as a novel and effective process for enhancing compost maturation. However, the poor conductivity of compost piles affects the efficiency and applicability of EAC. Thus, this study aims to examine how conductive biochar affects compost maturation in biochar-added electric field-assisted aerobic composting (b-EAC). Our results demonstrated that the germination index and humus index significantly increased, and the compost maturation time was shortened by nearly 25% during b-EAC compared to EAC. The total oxygen utilization rate and total relative abundance of electroactive bacteria during b-EAC increased by approximately two and three times those in EAC, respectively. These findings indicated that the addition of conductive biochar has a synergistic effect which facilitated oxygen utilization by reducing resistance and accelerating electron transfer. Therefore, the addition of conductive biochar is proved to be an effective and applicable strategy for optimizing the efficiency of EAC.
Collapse
Affiliation(s)
- Tao Fu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Huayuan Shangguan
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiaxiong Wu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiahuan Tang
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Haijing Yuan
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shungui Zhou
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| |
Collapse
|
35
|
Yan K, Yan L, Meng L, Cai H, Duan A, Wang L, Li Q, El-Sappah AH, Zhao X, Abbas M. Comprehensive Analysis of Bacterial Community Structure and Diversity in Sichuan Dark Tea ( Camellia sinensis). Front Microbiol 2021; 12:735618. [PMID: 34566939 PMCID: PMC8462664 DOI: 10.3389/fmicb.2021.735618] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 08/06/2021] [Indexed: 11/13/2022] Open
Abstract
Bacteria and fungi present during pile-fermentation of Sichuan dark tea play a key role in the development of its aesthetic properties, such as color, taste, and fragrance. In our previous study, high-throughput sequencing of dark tea during fermentation revealed Aspergillus was abundant, but scarce knowledge is available about bacterial communities during pile-fermentation. In this study, we rigorously explored bacterial diversity in Sichuan dark tea at each specific stage of piling. Analysis of cluster data revealed 2,948 operational taxonomic units, which were divided into 42 phyla, 98 classes, 247 orders, 461 families, 1,052 genera, and 1,888 species. Certain members of the family Enterobacteriaceae were dominant at early stages of fermentation YC, W1, and W2; Pseudomonas at middle stage W3; and the highest bacterial diversity was observed at the final quality-determining stage W4. Noticeably, probiotics, such as Bacillus, Lactobacillus, Bifidobacterium, and Saccharopolyspora were also significantly higher at the quality-determining stage W4. Our findings might help in precise bacterial inoculation for probiotic food production by increasing the health benefits of Sichuan dark tea. This research also falls under the umbrella of the "Establish Good Health and Well-Being" Sustainable Development Goals of the United Nations Organization.
Collapse
Affiliation(s)
- Kuan Yan
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| | - Linfeng Yan
- Sichuan Province Tea Industry Group Co., Ltd., Yibin, China
| | - Lina Meng
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| | - Hongbing Cai
- Sichuan Province Tea Industry Group Co., Ltd., Yibin, China
| | - Ailing Duan
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Lian Wang
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Quanzi Li
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
| | - Ahmed H. El-Sappah
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
- Genetics Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Xianming Zhao
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| | - Manzar Abbas
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| |
Collapse
|
36
|
Yan K, Abbas M, Meng L, Cai H, Peng Z, Li Q, El-Sappah AH, Yan L, Zhao X. Analysis of the Fungal Diversity and Community Structure in Sichuan Dark Tea During Pile-Fermentation. Front Microbiol 2021; 12:706714. [PMID: 34421866 PMCID: PMC8375752 DOI: 10.3389/fmicb.2021.706714] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/28/2021] [Indexed: 12/26/2022] Open
Abstract
The fungi present during pile-fermentation of Sichuan dark tea play a pivotal role in the development of its aroma and physical characteristics. Samples of tea leaves were collected on days 0 (YC-raw material), 8 (W1-first turn), 16 (W2-second turn), 24 (W3-third turn), and 32 (W4-out of pile) during pile-fermentation. High-throughput sequencing revealed seven phyla, 22 classes, 41 orders, 85 families, 128 genera, and 184 species of fungi. During fermentation, the fungal diversity index declined from the W1 to W3 stages and then increased exponentially at the W4 stage. A bar plot and heatmap revealed that Aspergillus, Thermomyces, Candida, Debaryomyces, Rasamsonia, Rhizomucor, and Thermoascus were abundant during piling, of which Aspergillus was the most abundant. Cluster analysis revealed that the W4 stage of fermentation is critical for fungal growth, diversity, and the community structure in Sichuan dark tea. This study revealed the role of fungi during pile-fermentation in the development of the essence and physical characteristics of Sichuan dark tea. This study comes under one of the Sustainable Development Goals of United Nations Organization (UNO) to "Establish Good Health and Well-Being."
Collapse
Affiliation(s)
- Kuan Yan
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| | - Manzar Abbas
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| | - Lina Meng
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| | - Hongbing Cai
- Sichuan Province Tea Industry Group Co., Ltd., Yibin, China
| | - Zhang Peng
- Sichuan Province Tea Industry Group Co., Ltd., Yibin, China
| | - Quanzi Li
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
| | - Ahmed H. El-Sappah
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
- Department of Genetics, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Linfeng Yan
- Sichuan Province Tea Industry Group Co., Ltd., Yibin, China
| | - Xianming Zhao
- Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| |
Collapse
|
37
|
Zheng R, Wang P, Cao B, Wu M, Li X, Wang H, Chai L. Intestinal response characteristic and potential microbial dysbiosis in digestive tract of Bufo gargarizans after exposure to cadmium and lead, alone or combined. CHEMOSPHERE 2021; 271:129511. [PMID: 33445016 DOI: 10.1016/j.chemosphere.2020.129511] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/29/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
The gastrointestinal tract is the largest immune organ in the body and meanwhile, accommodates a large number of microorganisms. Heavy metals could disturb the intestinal homeostasis and change the gut microbial composition. However, the information regarding the links between dysbiosis of gut microbiota and imbalance of host intestinal homeostasis induced by the mixture of heavy metals is insufficient. The present study investigates the effects of Cd/Pb, both single and combination exposure, on the growth performance, intestinal histology, digestive enzymes activity, oxidative stress and immune parameters, and intestinal microbiota in Bufo gargarizans tadpoles. Our results revealed that co-exposure of Cd-Pb induced more severe impacts not only on the host, but the intestinal microbiota. On the one hand, co-exposure of Cd-Pb significantly induced growth retardation, intestinal histological injury, decreased activities of digestive enzymes. On the other hand, Cd and Pb exposure, especially in mixed form, changed the diversity and richness, structure of microbiota. Also, the intestinal microbial composition was altered by Cd/Pb exposure (alone and combination) both at the different levels. Proteobacteria, act as front-line responder, was significantly increased in tadpoles under the exposure of metals. Finally, the functional prediction revealed that the disorders of metabolism and immune responses of intestinal microbiota was increased in tadpoles exposed to Cd/Pb (especially the mixture of Cd and Pb). Our research complements the understanding of links between changes in host fitness loss and intestinal microbiota and will add a new dimension of knowledge to the ecological risks of mixed heavy metals in amphibian.
Collapse
Affiliation(s)
- Rui Zheng
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China
| | - Pengju Wang
- Henan Key Laboratory of Immunology and Targeted Therapy, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, Henan, 453003, China
| | - Baoping Cao
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Minyao Wu
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China
| | - Xinyi Li
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China
| | - Hongyuan Wang
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China.
| | - Lihong Chai
- School of Environmental Science and Engineering, Chang'an University, Xi'an, 710054, People's Republic of China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Xi'an, 710062, People's Republic of China.
| |
Collapse
|
38
|
Wang B, Zhu S, Li W, Tang Q, Luo H. Effects of chromium stress on the rhizosphere microbial community composition of Cyperus alternifolius. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 218:112253. [PMID: 33933813 DOI: 10.1016/j.ecoenv.2021.112253] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 04/06/2021] [Accepted: 04/11/2021] [Indexed: 06/12/2023]
Abstract
Wetland plants are often used as the main body of soil, and the rhizosphere is a hot spot migration and transformation. Response mechanism to rhizosphere microorganisms on chromium(Cr) stressing could help improve the phytoremediation system. Cyperus alternifolius(CA) is selected as the research object by Cr-stress treatments and uncontaminated treatments with different cultivated pattern, included sole cultivated pattern(CAI), two-cultivated pattern (CAII), three-cultivated pattern (CAIII), and the un-planted blank samples (CK). 16s rRNA gene sequencing and metagenomic sequencing are performed to measure rhizosphere microbial community. And Five common enzymes in rhizosphere soils were observed: β-1,4-glucosidase (BG), β-N-acetylglucosaminidase (NAG), β-1,4-xylosidase (BX), cellobiohydrolase (CBH) and Leucine amino peptidase (LAP) in the rhizosphere. The results show that Gammaproteobacteria, Actinobacteria, Alphaproteobacteria, Gemmatimonadetes, Deltaproteobacteria are top five (63.97%) of the total sequence number. Wetland plants enriched a large amount of soil Cr in themselves, and the rhizosphere microorganisms don't show significant difference in community structure after affecting. 10.48% variation of microbial community is caused by Cr-stress. Acidovorax showed a great potential for chromium resistance. BX involvement in tolerance processes indirectly affects microbial communities (P < 0.01), there is a strong linear relationship between enzyme activity and the plants accumulating Cr and microbial community within 15.58% variant. The material accumulation and microbial quantity of CAIII are relatively low, but high biodiversity remains after affecting. These results provide references for in-depth understanding of rhizosphere microbial response to heavy metal pollution in wetland phytoremediation and interaction between wetland plants and rhizosphere microorganisms.
Collapse
Affiliation(s)
- Baichun Wang
- College of Eco-environment Engineering, Guizhou Minzu University, Guiyang 550025, China; Institute of Karst Wetland Ecology, Guizhou Minzu University, Guiyang 550025, China
| | - Sixi Zhu
- College of Eco-environment Engineering, Guizhou Minzu University, Guiyang 550025, China; Institute of Karst Wetland Ecology, Guizhou Minzu University, Guiyang 550025, China.
| | - Wujiang Li
- College of Eco-environment Engineering, Guizhou Minzu University, Guiyang 550025, China; Institute of Karst Wetland Ecology, Guizhou Minzu University, Guiyang 550025, China
| | - Qian Tang
- College of Eco-environment Engineering, Guizhou Minzu University, Guiyang 550025, China; Institute of Karst Wetland Ecology, Guizhou Minzu University, Guiyang 550025, China
| | - Hongyu Luo
- College of Eco-environment Engineering, Guizhou Minzu University, Guiyang 550025, China; Institute of Karst Wetland Ecology, Guizhou Minzu University, Guiyang 550025, China
| |
Collapse
|
39
|
Guo L, Yu H, Kharbach M, Zhang W, Wang J, Niu W. Biochar Improves Soil-Tomato Plant, Tomato Production, and Economic Benefits under Reduced Nitrogen Application in Northwestern China. PLANTS 2021; 10:plants10040759. [PMID: 33924483 PMCID: PMC8070344 DOI: 10.3390/plants10040759] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/25/2021] [Accepted: 04/12/2021] [Indexed: 12/17/2022]
Abstract
The tomato is an important economic crop that is a main ingredient of some prepared food as well as a focus of the agricultural industry. Optimizing nitrogen (N) fertilizers is essential for sustainable agricultural development, while the excessive use of N fertilizers leads to environmental and food production problems. As a soil amendment, biochar has been widely used to improve soil quality and crop yield. However, little information is available on the effects of biochar and N fertilizer reduction on tomato plant, soil characteristics in tomato cultivation and tomato production. In this study, a greenhouse experiment was carried out in Yangling, Shaanxi province, China, including four biochar levels (0, 30, 50, and 70 t ha−1) under drip irrigation and four N application rates (170, 190, 210, and 250 kg ha−1). The results showed that adding too much biochar (e.g., 70 t ha−1) and reducing N fertilizer too far (e.g., by 32%) will not lead to satisfactory results in terms of tomato growth, tomato yield and quality, and economic benefits. Biochar addition could significantly enhance microbial abundance, enzyme activity, and tomato growth compared with non‒biochar treatments when reducing the amount of applied N fertilizer by 16% or 24% (N2 and N3). From the perspectives of tomato yield, tomato quality (sugar‒acid ratio and vitamin C (VC) content), and economic benefits, optimal application rate of biochar and N fertilizer based on the silty clay loam soil of northwest China under drip irrigation is proposed, respectively. The proposal is based on both multidimensional nonlinear regression models and a comparison with experimental treatments. For example, biochar addition at 50 t ha−1 and reducing N fertilizer by 24% achieved the greatest tomato yield. Compared with non-biochar treatment under the corresponding N fertilizer level, soil enzyme activity (urease, phosphatase, and catalase), microbial abundance (bacteria, fungi, and actinomycetes), leaf gas exchange parameters (gs, Pn, and Tr), and biomass increased on average by 88.76%, 7.49%, 43.23%, and 39.67%, respectively. Based on a comprehensive consideration of tomato yield, VC content, sugar‒acid ratio, and economic benefits, 35 t ha−1 biochar and 200 kg ha−1 N fertilizer is the recommended combination of biochar and nitrogen fertilizer for local farmers.
Collapse
Affiliation(s)
- Lili Guo
- College of Water Resources and Architectural Engineering, Northwest A&F University, Weihui Road 23, Yangling 712100, China; (L.G.); (W.Z.)
- Department of Plant and Environmental Science, Faculty of Science, University of Copenhagen, Højbakkegaard Alle 13, DK-2630 Taastrup, Denmark
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Huiwen Yu
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26, DK-1958 Frederiksberg C, Denmark;
| | - Mourad Kharbach
- Research Unit of Mathematical Sciences, University of Oulu, FI-90014 Oulu, Finland;
| | - Wenqian Zhang
- College of Water Resources and Architectural Engineering, Northwest A&F University, Weihui Road 23, Yangling 712100, China; (L.G.); (W.Z.)
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Jingwei Wang
- College of Resources and Environment, Shanxi University of Finance and Economics, Taiyuan 030000, China;
| | - Wenquan Niu
- College of Water Resources and Architectural Engineering, Northwest A&F University, Weihui Road 23, Yangling 712100, China; (L.G.); (W.Z.)
- Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling 712100, China
- Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
- Institute of Soil and Water Conservation, CAS &MWR, Yangling 712100, China
- Correspondence:
| |
Collapse
|
40
|
Lv J, Niu Y, Yuan R, Wang S. Different Responses of Bacterial and Archaeal Communities in River Sediments to Water Diversion and Seasonal Changes. Microorganisms 2021; 9:microorganisms9040782. [PMID: 33917984 PMCID: PMC8068392 DOI: 10.3390/microorganisms9040782] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 11/16/2022] Open
Abstract
In recent years, different responses of archaea and bacteria to environmental changes have attracted increasing scientific interest. In the mid-latitude region, Fen River receives water transferred from the Yellow River, electrical conductivity (EC), concentrations of Cl- and Na+ in water, total phosphorus (TP), and Olsen phosphorus (OP) in sediments were significantly affected by water transfer. Meanwhile, temperature and oxidation-reduction potential (ORP) of water showed significant seasonal variations. Based on 16S rRNA high-throughput sequencing technology, the composition of bacteria and archaea in sediments was determined in winter and summer, respectively. Results showed that the dominance of bacterial core flora decreased and that of archaeal core flora increased after water diversion. The abundance and diversity of bacterial communities in river sediments were more sensitive to anthropogenic and naturally induced environmental changes than that of archaeal communities. Bacterial communities showed greater resistance than archaeal communities under long-term external disturbances, such as seasonal changes, because of rich species composition and complex community structure. Archaea were more stable than bacteria, especially under short-term drastic environmental disturbances, such as water transfer, due to their insensitivity to environmental changes. These results have important implications for understanding the responses of bacterial and archaeal communities to environmental changes in river ecosystems affected by water diversion.
Collapse
Affiliation(s)
- Jiali Lv
- School of Environment and Natural Resources, Shanxi University, Taiyuan 030006, China; (J.L.); (Y.N.)
- Key Laboratory of Agricultural Water Resources Research, Innovation Academy for Seed Design, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China;
- Sino-Danish College of University of Chinese Academy of Sciences, Beijing 101408, China
| | - Yangdan Niu
- School of Environment and Natural Resources, Shanxi University, Taiyuan 030006, China; (J.L.); (Y.N.)
| | - Ruiqiang Yuan
- School of Environment and Natural Resources, Shanxi University, Taiyuan 030006, China; (J.L.); (Y.N.)
- Correspondence:
| | - Shiqin Wang
- Key Laboratory of Agricultural Water Resources Research, Innovation Academy for Seed Design, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China;
| |
Collapse
|
41
|
Zheng R, Wu M, Wang H, Chai L, Peng J. Copper-induced sublethal effects in Bufo gargarizans tadpoles: growth, intestinal histology and microbial alternations. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:502-513. [PMID: 33587250 DOI: 10.1007/s10646-021-02356-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/20/2021] [Indexed: 06/12/2023]
Abstract
Copper (Cu) is one of the environmental contaminations which can pose significant risks for organisms. The current study explores the effects of Cu exposure on the growth, intestinal histology and microbial ecology in Bufo gargarizans. The results revealed that 0.5-1 μM Cu exposure induced growth retardation (including reduction of total body length and wet weight) and intestinal histological injury (including disordered enterocyte, changes in the villi and vacuoles) of tadpoles. Also, high-throughput sequencing analysis showed that Cu exposure caused changes in richness, diversity and structure of intestinal microbiota. Moreover, the composition of intestinal microbiota was altered in tadpoles exposed to different concentrations of Cu. At the phylum level, we observed the abundance of proteobacteria was increased, while the abundance of fusobacteria was decreased in the intestinal microbiota of tadpoles exposed to 1 μM Cu. At the genus level, a reduced abundance of kluyvera and aeromonas was observed in the intestinal microbiota of tadpoles under the exposure of 0-0.5 μM Cu. Finally, functional predictions revealed that tadpoles exposed to copper may be at a higher risk of developing metabolic disorders or diseases. Above all, our results will develop a comprehensive view of the Cu exposure in amphibians and will yield a new consideration for sublethal effects of Cu on aquatic organisms.
Collapse
Affiliation(s)
- Rui Zheng
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Minyao Wu
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Hongyuan Wang
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Lihong Chai
- School of Water and Environment, Chang'an University, Xi'an, 710054, People's Republic of China
- Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Xi'an, 710062, People's Republic of China
| | - Jufang Peng
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
- Basic Experimental Teaching Center, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
| |
Collapse
|
42
|
Feng Y, Yang J, Liu W, Yan Y, Wang Y. Hydroxyapatite as a passivator for safe wheat production and its impacts on soil microbial communities in a Cd-contaminated alkaline soil. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124005. [PMID: 33069995 DOI: 10.1016/j.jhazmat.2020.124005] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/28/2020] [Accepted: 09/14/2020] [Indexed: 05/21/2023]
Abstract
The remediation of Cd-contaminated alkaline soil plays a critical role in safe wheat production. In this study, hydroxyapatite (HAP), a functional environmental remediation material, was selected to investigate the effects of HAP on cadmium accumulation in winter wheat (Triticum aestivum L.), Cd bioavailability in alkaline soil moderately polluted with Cd (2.46 mg kg-1) and the soil bacterial community via pot experiments. The results showed HAP effectively inhibited Cd accumulation in the grains of two investigated wheat cultivars by hindering root uptake. The Cd concentrations decreased by 49.9-81.9%, and 35.7-92.4% in the grains of Zhoumai-30 and Zhengmai-7698, respectively. HAP increased the soil pH and reduced the bioavailability of Cd. 16S rRNA sequencing analysis indicated that the changes of soil physicochemical properties changed the diversity and composition of the bacterial community by increasing the relative abundance of beneficial soil bacteria. These results demonstrated the application of 2.5% HAP combined with planting Zhengmai-7698 treatment was a potential remediation method for safe wheat production, and also benefited soil P and N cycling by increasing the relative abundance of beneficial bacteria. The good performance of HAP in inhabiting Cd accumulation in wheat grains indicated it is a promising material for safe wheat production.
Collapse
Affiliation(s)
- Ya Feng
- College of Chemistry & Environmental Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jianjun Yang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Wei Liu
- College of Chemistry & Environmental Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| | - Yubo Yan
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, China
| | - Yihao Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| |
Collapse
|
43
|
Yu J, Pavia MJ, Deem LM, Crow SE, Deenik JL, Penton CR. DNA-Stable Isotope Probing Shotgun Metagenomics Reveals the Resilience of Active Microbial Communities to Biochar Amendment in Oxisol Soil. Front Microbiol 2020; 11:587972. [PMID: 33329461 PMCID: PMC7717982 DOI: 10.3389/fmicb.2020.587972] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/08/2020] [Indexed: 12/03/2022] Open
Abstract
The functions and interactions of individual microbial populations and their genes in agricultural soils amended with biochar remain elusive but are crucial for a deeper understanding of nutrient cycling and carbon (C) sequestration. In this study, we coupled DNA stable isotope probing (SIP) with shotgun metagenomics in order to target the active community in microcosms which contained soil collected from biochar-amended and control plots under napiergrass cultivation. Our analyses revealed that the active community was composed of high-abundant and low-abundant populations, including Actinobacteria, Proteobacteria, Gemmatimonadetes, and Acidobacteria. Although biochar did not significantly shift the active taxonomic and functional communities, we found that the narG (nitrate reductase) gene was significantly more abundant in the control metagenomes. Interestingly, putative denitrifier genomes generally encoded one gene or a partial denitrification pathway, suggesting denitrification is typically carried out by an assembly of different populations within this Oxisol soil. Altogether, these findings indicate that the impact of biochar on the active soil microbial community are transient in nature. As such, the addition of biochar to soils appears to be a promising strategy for the long-term C sequestration in agricultural soils, does not impart lasting effects on the microbial functional community, and thus mitigates un-intended microbial community shifts that may lead to fertilizer loss through increased N cycling.
Collapse
Affiliation(s)
- Julian Yu
- School of Life Sciences, Arizona State University, Tempe, AZ, United States.,Center for Fundamental and Applied Microbiomics, The Biodesign Institute, Arizona State University, Tempe, AZ, United States
| | - Michael J Pavia
- School of Life Sciences, Arizona State University, Tempe, AZ, United States.,Center for Fundamental and Applied Microbiomics, The Biodesign Institute, Arizona State University, Tempe, AZ, United States.,Swette Center for Environmental Biotechnology, The Biodesign Institute, Arizona State University, Tempe, AZ, United States
| | - Lauren M Deem
- Natural Resources and Environmental Management, University of Hawai'i at Mânoa, Honolulu, HI, United States
| | - Susan E Crow
- Natural Resources and Environmental Management, University of Hawai'i at Mânoa, Honolulu, HI, United States
| | - Jonathan L Deenik
- Tropical Plant and Soil Sciences, University of Hawai'i at Mânoa, Honolulu, HI, United States
| | - Christopher Ryan Penton
- Center for Fundamental and Applied Microbiomics, The Biodesign Institute, Arizona State University, Tempe, AZ, United States.,College of Integrative Sciences and Arts, Arizona State University, Mesa, AZ, United States
| |
Collapse
|
44
|
Wang H, Yan S, Ren T, Yuan Y, Kuang G, Wang B, Yun F, Feng H, Ji X, Yuan X, Liu G. Novel environmental factors affecting microbial responses and physicochemical properties by sequentially applied biochar in black soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:37432-37443. [PMID: 32681332 DOI: 10.1007/s11356-020-10081-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
Biochar was increasingly used in agriculture soil amendment and has received widespread attention due to its potential to improve soil micro-ecological environment and crop growth. The raw material of the biochar used in this study is peanut shell, which is mixed with other organics and minerals to become a mineral-enhanced biochar under heating conditions (220 °C). When the third season crop is finished, we evaluated black soil physicochemical properties, microbial communities, and crop growth in long-term agricultural trials. Four treatments were set up: no amendment (control CK), nitrogen fertilizer only (70 kg ha-1 N), enhanced biochar only (5 t ha-1 B), and nitrogen fertilizer (70 kg ha-1) + enhanced biochar (5 t ha-1) (NB). The enhanced biochar promotes crop growth and increased the richness of the bacterial community, while reducing the richness of the fungal community. Nitrogen fertilizer + enhanced biochar increased soil microbial biomass carbon, nitrate nitrogen, and ammonium nitrogen by 43.75, 7.25, and 19.28%. In addition, we found changes in bacterial community were closely related to soil organic carbon, while changes in fungal community structure were closely related to soil carbon to nitrogen ratio. And the soil organic carbon and soil carbon to nitrogen ratio of biochar treatment were increased by 5.64 and 6.25% compared with fertilizer treatment, respectively. We concluded that enhanced biochar improved the soil more effectively and made the soil more conducive to crop growth. Regulating the microbial community by improving the physicochemical properties of soil was an important way to improve the stability and condition of the soil system with biochar. An enhanced biochar was of great significance for circular development of agriculture and soil improvement in Northeast China.
Collapse
Affiliation(s)
- Huanhuan Wang
- Tobacco College of Henan Agricultural University, Zhengzhou, 450002, People's Republic of China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 410100, People's Republic of China
| | - Shen Yan
- Tobacco College of Henan Agricultural University, Zhengzhou, 450002, People's Republic of China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 410100, People's Republic of China
| | - Tianbao Ren
- Tobacco College of Henan Agricultural University, Zhengzhou, 450002, People's Republic of China.
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 410100, People's Republic of China.
| | - Ye Yuan
- Mudanjiang Tobacco Scientific Research Institute, Harbin, 150090, China
| | - Gang Kuang
- Mudanjiang Tobacco Company, Mudanjiang, 157000, China
| | - Bo Wang
- Mudanjiang Tobacco Company, Mudanjiang, 157000, China
| | - Fei Yun
- Tobacco College of Henan Agricultural University, Zhengzhou, 450002, People's Republic of China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 410100, People's Republic of China
| | - Huilin Feng
- Tobacco College of Henan Agricultural University, Zhengzhou, 450002, People's Republic of China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 410100, People's Republic of China
| | - Xiaoming Ji
- Tobacco College of Henan Agricultural University, Zhengzhou, 450002, People's Republic of China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 410100, People's Republic of China
| | - Xiaojing Yuan
- Henan Huinong Soil Conservation Research and Development Co., Ltd., Dengfeng, 452470, China
| | - Guoshun Liu
- Tobacco College of Henan Agricultural University, Zhengzhou, 450002, People's Republic of China
- Henan Biochar Engineering Technology Research Center, Zhengzhou, 410100, People's Republic of China
| |
Collapse
|
45
|
Combined use of municipal solid waste biochar and bacterial biosorbent synergistically decreases Cd(II) and Pb(II) concentration in edible tissue of forage maize irrigated with heavy metal-spiked water. Heliyon 2020; 6:e04688. [PMID: 32817901 PMCID: PMC7424215 DOI: 10.1016/j.heliyon.2020.e04688] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 06/02/2020] [Accepted: 08/07/2020] [Indexed: 01/12/2023] Open
Abstract
A pot experiment was carried out to evaluate the effect of a municipal solid waste (MSW) biochar and a bacterial strain on the forage maize growth and the concentration of lead (Pb) and cadmium (Cd) in the edible tissue of maize irrigated with water contaminated with Cd (5 mg L−1) and Pb (100 mg L−1). Experimental treatments included (i) bacterial strain at two levels: no bacterial strain and Enterobacter cloacae R7; (ii) MSW biochar at three levels: 0, 1, and 3% (w/w); and (iii) irrigation water quality at five levels: plants irrigated with 100% freshwater (FW), plants irrigated with 75%FW + 25% contaminated water (CW), plants irrigated with 50%FW + 50% CW, plants irrigated with 25%FW + 75% CW, and plants irrigated with 100% CW. The effect of various treatments on maize growth indices and concentration of Pb(II) and Cd(II) in the plant was significant at 5% level. The concentration of these metals in the shoot of plants irrigated with 75 and 100% CW was higher than the permissible limits for Cd(II) and Pb(II) in livestock feed. However, the concentration of these metals in the shoot of the plants irrigated with 25 and 50% CW was lower than the permissible limit for this use. In this study, the combined application of 3%biochar and E. cloacae R7 had a significant effect on increased root dry weight (ranging from 29 to 33%), shoot dry weight (ranging from 32 to 43%) and bacterial root colonization (ranging from 33 to 53%) and on reduced concentration of Pb (ranging from 78 to 80%) and Cd (ranging from 72 to 76%) of the shoot of maize plant (edible tissues used by livestock), which was below the permissible limits for livestock feed, compared to corresponding controls. According to the results of this study, to reduce the concentration of the heavy metals in forage maize shoot (below the permissible limits for livestock feed), it is suggested using heavy metal–contaminated water either in combination with freshwater (50 or 75% FW) or in combination with biochar and bacterial biosorbent, averting human/animal health risk.
Collapse
|
46
|
Wei Z, Wang JJ, Meng Y, Li J, Gaston LA, Fultz LM, DeLaune RD. Potential use of biochar and rhamnolipid biosurfactant for remediation of crude oil-contaminated coastal wetland soil: Ecotoxicity assessment. CHEMOSPHERE 2020; 253:126617. [PMID: 32278905 DOI: 10.1016/j.chemosphere.2020.126617] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 03/20/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
Remediation of wetland soils contaminated with petroleum hydrocarbons is a challenging task. Biosurfactant and biochar have been used in oil remediation. However, little is known about the ecotoxicity of these materials when applied in wetland ecosystems. In this study, the ecotoxicity of biochar and rhamnolipid (RL) biosurfactant as crude oil remediation strategies in a Louisiana wetland soil was investigated. A pot experiment was set up with wetland soil treated with/without crude oil followed by subjecting to application of 1% biochar and various levels of RL ranging from 0.1% to 1.4%. The ecotoxicity was evaluated regarding to high plant (S. Alterniflora), algae, and soil microbes. Specifically, after a 30-day growth in a controlled chamber, plant biomass change as well as shoot/root ratio was measured. Algae growth was estimated by quantifying chlorophyll by spectrometry following separation, and soil microbial community was characterized by phospholipid fatty acids analysis. Results showed that plant can tolerate RL level up to 0.8%, while algae growth was strongly inhibited at RL > 0.1%. Algal biomass was significantly increased by biochar, which offset the negative impact of oil and RL. Additionally, soil microbial community shift caused by crude oil and RL was alleviated by biochar with promoting Gram-positive bacteria, actinomycetes, and arbuscular mycorrhizal fungi. Overall, this study shows that integrated treatment of biochar and RL has the lowest ecotoxicity to plant and algae when used in oil remediation of contaminated wetland soils.
Collapse
Affiliation(s)
- Zhuo Wei
- School of Plant, Environment and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA70803, USA
| | - Jim J Wang
- School of Plant, Environment and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA70803, USA.
| | - Yili Meng
- School of Plant, Environment and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA70803, USA
| | - Jiabing Li
- College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian, 350117, China; Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA70803, USA
| | - Lewis A Gaston
- School of Plant, Environment and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA70803, USA
| | - Lisa M Fultz
- School of Plant, Environment and Soil Sciences, Louisiana State University AgCenter, Baton Rouge, LA70803, USA
| | - Ronald D DeLaune
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA70803, USA
| |
Collapse
|
47
|
Rafiq MK, Bai Y, Aziz R, Rafiq MT, Mašek O, Bachmann RT, Joseph S, Shahbaz M, Qayyum A, Shang Z, Danaee M, Long R. Biochar amendment improves alpine meadows growth and soil health in Tibetan plateau over a three year period. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 717:135296. [PMID: 31839318 DOI: 10.1016/j.scitotenv.2019.135296] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/05/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
Previous biochar research has primarily focused on agricultural annual cropping systems with very little attention given to highly fragile, complex and diverse natural alpine grassland ecosystems. The present study investigated the effect of biochar on the growth of alpine meadows and soil health. This study was conducted in the Qinghai Tibetan Plateau over a three year period to investigate the effect of three rice husk biochar application rates alone and combination with high and low NPK fertilizer dosages on alpine meadow productivity, soil microbial diversity as well as pH, carbon and nitrogen content at 0-10 cm and 10-20 cm depth. At the end of the 3rd year soil samples were analysed and assessed by combined analysis of variance. The results showed that biochar application in combination with nitrogen (N), phosphorus (P) and potassium (K) fertilizer had a significant increase in fresh and dry biomass during the second and third year of the study as compared to control and alone biochar application (p ≤ 0.05). Biochar alone and in combination with NPK fertilizer resulted in a significant increase in the soil pH and carbon contents of the soil. XPS results, the SEM imaging and EDS analysis of aged biochar demonstrated that the biochar has undergone complex changes over the 3 years as compared to fresh biochar. This research suggests that biochar has positive effect on alpine meadow growth and soil health and may be an effective tool for alpine meadow restoration.
Collapse
Affiliation(s)
- Muhammad Khalid Rafiq
- UK Biochar Research Centre, School of GeoSciences, University of Edinburgh, Crew Building, King's Buildings, Edinburgh EH9 3FF, United Kingdom; State Key Laboratory of Grassland Agro-ecosystems, International Centre for Tibetan Plateau Ecosystem Management, School of Life Sciences, Lanzhou University, Lanzhou 730000, China; Rangeland Research Institute, National Agricultural Research Center, Islamabad 44000, Pakistan
| | - Yanfu Bai
- State Key Laboratory of Grassland Agro-ecosystems, International Centre for Tibetan Plateau Ecosystem Management, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Rukhsanda Aziz
- Department of Environmental Science, International Islamic University, Islamabad, 44000 Pakistan
| | - Muhammad Tariq Rafiq
- Center for Interdisciplinary Research in Basic Sciences, International Islamic University, 44000 Islamabad, Pakistan
| | - Ondřej Mašek
- UK Biochar Research Centre, School of GeoSciences, University of Edinburgh, Crew Building, King's Buildings, Edinburgh EH9 3FF, United Kingdom
| | - Robert Thomas Bachmann
- Universiti Kuala Lumpur, Branch Campus Malaysian Institute of Chemical & Bio-Engineering Technology (UniKL MICET), Lot 1988, Kawasan Perindustrian Bandar Vendor, Taboh Naning, 78000 Alor Gajah, Melaka, Malaysia
| | - Stephen Joseph
- School of Materials Science and Engineering, University of NSW., Kensington, NSW Australia 2052
| | - Maqbool Shahbaz
- Rangeland Research Institute, National Agricultural Research Center, Islamabad 44000, Pakistan
| | - Abdul Qayyum
- Department of Agronomy, University of Haripur, 22620, Pakistan
| | - Zhanhuan Shang
- State Key Laboratory of Grassland Agro-ecosystems, International Centre for Tibetan Plateau Ecosystem Management, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Mahmoud Danaee
- Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
| | - Ruijun Long
- State Key Laboratory of Grassland Agro-ecosystems, International Centre for Tibetan Plateau Ecosystem Management, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| |
Collapse
|
48
|
Zheng R, Chen X, Ren C, Teng Y, Shen Y, Wu M, Wang H, Huang M. Comparison of the characteristics of intestinal microbiota response in Bufo gargarizans tadpoles: Exposure to the different environmental chemicals (Cu, Cr, Cd and NO 3-N). CHEMOSPHERE 2020; 247:125925. [PMID: 32069717 DOI: 10.1016/j.chemosphere.2020.125925] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/12/2020] [Accepted: 01/13/2020] [Indexed: 06/10/2023]
Abstract
Environmental pollutants could change the intestinal microbiota communities, while data concerning the dynamics of the intestinal microbiota in response to different environmental chemicals in amphibian are lacking. We compared the effects of Cu, Cd, Cr and NO3-N on intestinal microbiota of B. gargarizans tadpoles by using high-throughput 16S rRNA sequencing technology. Our results revealed that responses of intestinal microbiota to three metals and NO3-N showed different characteristics. At the phylum level, the most 100 OTUs were predominantly colonized by Proteobacteria, and meanwhile, expansion of Proteobacteria was observed in Cu 64 μg/L, Cd (100 μg/L and 200 μg/L) and NO3-N100 mg/L treatment groups. In addition, the abundance of Bacteroidetes significantly increased in the gut administrate with Cu, Cd, Cr, NO3-N 20 mg/L exposures, while declined abundance of Fusobacteria was observed in Cu64 μg/L Cd100 μg/L Cd200μg/L-exposed groups. At the genus level, several genera exhibited increased prevalence of abundance such as Shewanella, Azospira and Flavobacterium. The functional prediction revealed that exposures of three metals and NO3-N increase the risks of metabolic disorders and diseases. Our research could be an important step toward an assessment of the ecological risks of different chemicals to aquatic organisms using intestinal microbiota.
Collapse
Affiliation(s)
- Rui Zheng
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China
| | - Xiaoyan Chen
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China
| | - Chaolu Ren
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China
| | - Yiran Teng
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China
| | - Yujia Shen
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China
| | - Minyao Wu
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China
| | - Hongyuan Wang
- College of Life Science, Shaanxi Normal University, Xi'an, 710119, China.
| | - MinYi Huang
- College of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China.
| |
Collapse
|
49
|
Chew J, Zhu L, Nielsen S, Graber E, Mitchell DRG, Horvat J, Mohammed M, Liu M, van Zwieten L, Donne S, Munroe P, Taherymoosavi S, Pace B, Rawal A, Hook J, Marjo C, Thomas DS, Pan G, Li L, Bian R, McBeath A, Bird M, Thomas T, Husson O, Solaiman Z, Joseph S, Fan X. Biochar-based fertilizer: Supercharging root membrane potential and biomass yield of rice. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 713:136431. [PMID: 31958720 DOI: 10.1016/j.scitotenv.2019.136431] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 11/27/2019] [Accepted: 12/29/2019] [Indexed: 06/10/2023]
Abstract
Biochar-based compound fertilizers (BCF) and amendments have proven to enhance crop yields and modify soil properties (pH, nutrients, organic matter, structure etc.) and are now in commercial production in China. While there is a good understanding of the changes in soil properties following biochar addition, the interactions within the rhizosphere remain largely unstudied, with benefits to yield observed beyond the changes in soil properties alone. We investigated the rhizosphere interactions following the addition of an activated wheat straw BCF at an application rates of 0.25% (g·g-1 soil), which could potentially explain the increase of plant biomass (by 67%), herbage N (by 40%) and P (by 46%) uptake in the rice plants grown in the BCF-treated soil, compared to the rice plants grown in the soil with conventional fertilizer alone. Examination of the roots revealed that micron and submicron-sized biochar were embedded in the plaque layer. BCF increased soil Eh by 85 mV and increased the potential difference between the rhizosphere soil and the root membrane by 65 mV. This increased potential difference lowered the free energy required for root nutrient accumulation, potentially explaining greater plant nutrient content and biomass. We also demonstrate an increased abundance of plant-growth promoting bacteria and fungi in the rhizosphere. We suggest that the redox properties of the biochar cause major changes in electron status of rhizosphere soils that drive the observed agronomic benefits.
Collapse
Affiliation(s)
- Jinkiat Chew
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Longlong Zhu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Shaun Nielsen
- Centre for Marine Bio-Innovation, School of Biological, Earth and Environmental Sciences, The University of New South Wales, Sydney, Australia
| | - Ellen Graber
- Institute of Soil, Water and Environmental Sciences, The Volcani Centre, Agricultural Research Organization, POB 6, Bet Dagan 50250, Israel
| | - David R G Mitchell
- Electron Microscopy Centre, AIIM Building, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW 2517, Australia
| | - Joseph Horvat
- ISEM and School of Physics, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Mohanad Mohammed
- ISEM and School of Physics, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Minglong Liu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Lukas van Zwieten
- New South Wales Department of Primary Industries, Wollongbar, NSW 2477, Australia
| | - Scott Donne
- Discipline of Chemistry, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Paul Munroe
- School of Materials Science and Engineering, University of NSW, Kensington, NSW 2052, Australia
| | - Sarasadat Taherymoosavi
- School of Materials Science and Engineering, University of NSW, Kensington, NSW 2052, Australia
| | - Ben Pace
- School of Materials Science and Engineering, University of NSW, Kensington, NSW 2052, Australia
| | - Aditya Rawal
- NMR Facility, Mark Wainwright Analytical Centre, University of New South Wales, NSW 2052, Australia
| | - James Hook
- NMR Facility, Mark Wainwright Analytical Centre, University of New South Wales, NSW 2052, Australia
| | - Chris Marjo
- Solid State & Elemental Analysis Unit, Mark Wainwright Analytical Centre, University of New South Wales, NSW 2052, Australia
| | - Donald S Thomas
- Solid State & Elemental Analysis Unit, Mark Wainwright Analytical Centre, University of New South Wales, NSW 2052, Australia
| | - Genxing Pan
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Lianqing Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Rongjun Bian
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Anna McBeath
- College of Science, Technology and Engineering and Centre for Tropical Environmental and Sustainability Science, James Cook University, Cairns 4870, Australia
| | - Michael Bird
- College of Science, Technology and Engineering and Centre for Tropical Environmental and Sustainability Science, James Cook University, Cairns 4870, Australia
| | - Torsten Thomas
- Centre for Marine Bio-Innovation, School of Biological, Earth and Environmental Sciences, The University of New South Wales, Sydney, Australia
| | - Olivier Husson
- CIRAD, UPR AIDA, F-34398 Montpellier, France; AIDA, Univ. Montpellier, CIRAD, Montpellier, France; Africa Rice Centre, 01 BP 2551, Bouaké 01, Cote d'Ivoire
| | - Zakaria Solaiman
- UWA School of Agriculture and Environment, and The UWA Institute of Agriculture, University of Western Australia, WA 6009, Australia
| | - Stephen Joseph
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; Discipline of Chemistry, University of Newcastle, Callaghan, NSW 2308, Australia; School of Materials Science and Engineering, University of NSW, Kensington, NSW 2052, Australia
| | - Xiaorong Fan
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| |
Collapse
|
50
|
Nan Q, Wang C, Wang H, Yi Q, Liang B, Xu J, Wu W. Biochar drives microbially-mediated rice production by increasing soil carbon. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121680. [PMID: 31818657 DOI: 10.1016/j.jhazmat.2019.121680] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 10/17/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
The effects of an on-site biomass (rice straw) equivalent biochar-returning strategy (RSC) on rice yield, soil nutrients and bacterial community composition were examined in a four-year field trial (2013-2016) conducted in a paddy field in south China. Three treatments were set up including annual on-site biomass return (RS, rice straw at 8 t ha-1 yr-1), annual on-site biomass equivalent biochar-return (RSC, rice straw biochar at 2.8 t ha-1 yr-1 with a 35 % carbonization rate) and control (CK, no rice straw or biochar added). Results showed that a low rate of biochar application (RSC) could significantly increase rice yield in four successive years. The increase in rice yield was mainly attributed to the increase in soil potassium and magnesium contents resulting from the presence of the unique surface functional groups of biochar. As a result of biochar amendment, soil bacterial cooperative relationships were improved in the RSC, compared to those in the RS treatment. Our study indicated that RSC might be promoted as a promising strategy to enhance rice productivity and soil fertility in a sustainable way.
Collapse
Affiliation(s)
- Qiong Nan
- Institute of Environmental Science and Technology, College of Environment and Resource Science, Zhejiang University, Hangzhou, 310029, PR China
| | - Cheng Wang
- Environmental Microbiomics Research Center, South China Sea Institution, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, 510006, PR China
| | - Hao Wang
- Institute of Environmental Science and Technology, College of Environment and Resource Science, Zhejiang University, Hangzhou, 310029, PR China
| | - Qianqian Yi
- Institute of Environmental Science and Technology, College of Environment and Resource Science, Zhejiang University, Hangzhou, 310029, PR China
| | - Biqing Liang
- National Cheng Kung University, Department of Earth Sciences, No. 1 University Rd., East District, Tainan, 70101, Taiwan
| | - Jun Xu
- Institute of Clinical Molecular Biology & Central Laboratory, Peking University People's Hospital, No.11, Xizhimen South Street, Xicheng District, Beijing, 100044, PR China
| | - Weixiang Wu
- Institute of Environmental Science and Technology, College of Environment and Resource Science, Zhejiang University, Hangzhou, 310029, PR China.
| |
Collapse
|