Article
Soil Science
Micaela Tosi, William Deen, Rhae Drijber, Morgan McPherson, Ashley Stengel, Kari Dunfield
Summary: In a continuous corn trial, long-term nitrogen inputs had minor effects on soil microbial community structure, with differences between prokaryotes and fungi. Short-term shock nitrogen rates had minimal impact on microbial community structure, with changes observed at lower taxonomic levels and low nitrogen favoring phylogenetically diverse taxa.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Sophie Q. van Rijssel, G. F. (Ciska) Veen, Guusje J. Koorneef, J. M. T. (Tanja) Bakx-Schotman, Freddy C. ten Hooven, Stefan Geisen, Wim H. van Der Putten
Summary: The study found that there are differences in microbial community composition between organic and conventional managed fields. Fungal diversity in organic fields increased over time, but this effect disappeared when conventional paired fields were included in the analysis. The study also showed a relationship between pH and soil organic matter content and the diversity and community composition of bacteria and fungi.
Article
Biodiversity Conservation
Guangzhou Wang, Liz Koziol, Bryan L. Foster, James D. Bever
Summary: Climate changes and anthropogenic nutrient enrichment have negative impacts on plant diversity and ecosystem functions. Soil microbes, particularly arbuscular mycorrhizal fungi (AMF), play a crucial role in mediating plant community response to nutrient enrichment. Shifts in mycorrhizal responsive plants' competitive abilities can drive plant community change to anthropogenic eutrophication, highlighting the importance of mycorrhizal mutualism in ecological restoration following soil community degradation.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Soil Science
Beat Frey, Barbara Moser, Bjorn Tytgat, Stephan Zimmermann, Juan Alberti, Lori A. Biederman, Elizabeth T. Borer, Arthur A. D. Broadbent, Maria C. Caldeira, Kendi F. Davies, Nico Eisenhauer, Anu Eskelinen, Philip A. Fay, Frank Hagedorn, Yann Hautier, Andrew S. MacDougall, Rebecca L. McCulley, Joslin L. Moore, Maximilian Nepel, Sally A. Powers, Eric W. Seabloom, Eduardo Vazquez, Risto Virtanen, Laura Yahdjian, Anita C. Risch
Summary: This study collected soil samples from grasslands worldwide and analyzed the impact of nitrogen addition on the soil microbiome. The results showed that nitrogen addition had a significant effect on the community structure of soil diazotrophs, but had minimal impact on their diversity and abundance. In contrast, ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) responded differently to nitrogen addition. Overall, long-term nitrogen addition had a greater impact on AOB communities compared to soil diazotrophs and AOA.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Soil Science
Ihsan Muhammad, Jun Wang, Upendra M. Sainju, Shaohong Zhang, Fazhu Zhao, Ahmad Khan
Summary: Cover crops enhance soil microbial community biomass and affect community structure compared to no cover crops, with responses varying depending on soil type, climatic conditions, and cover crop types. Incorporating cover crop residue into the soil can increase certain microbial parameters but decrease others.
Article
Environmental Sciences
Ziwei Wan, Ling Wang, Guoqin Huang, Fahd Rasul, Masood Iqbal Awan, Huanming Cui, Kailou Liu, Xichu Yu, Haiying Tang, Shubin Wang, Huifang Xu
Summary: Organic fertilizer has a significant impact on the community structure and activity of soil denitrifying bacteria and fungi. Results suggest that nirS and nosZII denitrifying bacteria may act as hot spots for bacterial N2O emissions, while nirK denitrifying fungi may act as hot spots for fungal N2O emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agronomy
K. Masenya, G. D. Thompson, M. Tekere, T. P. Makhalanyane, R. E. Pierneef, D. J. G. Rees
Summary: The study revealed that there are significant differences in the foliar microbiome between asymptomatic and symptomatic sorghum lines after natural infection by pathogens, with a notable association between plant health and microbial community structure. Different fungal and bacterial pathogens were identified, with some associated with specific susceptibility levels. Certain bacteria and fungi with plant growth-promoting traits were linked to resistant and moderately resistant groups. The results indicate that diverse microbiome could potentially enhance plant resistance to pathogens and contribute to overall plant health.
Article
Soil Science
Anton Govednik, Ziva Potocrik, Klemen Eler, Rok Mihelic, Marjetka Suhadolc
Summary: Reduced tillage intensity increases soil organic carbon (SOC) in the topsoil but also leads to increased nitrous oxide (N2O) emissions derived from microorganisms. Trade-offs between carbon sequestration and N2O emissions under different tillage practices and fertilization regimes are conflicting and unclear. This study examined the effects of different tillage and fertilization regimes on SOC, microbial biomass, and microbial community abundance and composition. Stratification of SOC and nutrients in the soil by tillage and fertilization was found to be the main driver of differences in microbial and nitrogen cycling communities.
APPLIED SOIL ECOLOGY
(2023)
Article
Soil Science
Anqi Sun, Xiao-Yan Jiao, Qinglin Chen, Ai-Lian Wu, Yong Zheng, Yong-Xin Lin, Ji-Zheng He, Hang-Wei Hu
Summary: Fertilization significantly influences the diversity and composition of sorghum-associated microbial communities, particularly in rhizosphere and bulk soil microbiomes. Specific genera of bacteria and fungi are important predictors of sorghum yield and protein content. Fertilization has a positive indirect effect on sorghum yield and protein content through influencing microbial diversity in soil microbiota.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Soil Science
Huaihai Chen, Kayan Ma, Yu Huang, Qi Fu, Yingbo Qiu, Zhiyuan Yao
Summary: Salinity in soil can impact microbial activities and community structure, influencing carbon storage and mineralization. Research has shown that with increasing salinity, there is a significant reduction in prokaryotic alpha-diversity indices, as well as alterations in prokaryotic beta-diversity. High salt concentrations have been found to increase the abundance of certain microbial groups while inhibiting others. This meta-analysis highlights the significant changes in microbial community composition in response to environmental salinization, with implications for nutrient and energy flow regulation.
Article
Microbiology
Ning Duan, Mark Radosevich, Jie Zhuang, Jennifer. M. M. DeBruyn, Margaret Staton, Sean. M. M. Schaeffer
Summary: Soil viral infection can impact soil microbial structure and functions, which are vital to global biogeochemical cycling. In long-term conservation agricultural management, viral diversity, community structure, and the correlation with bacteria are influenced by nitrogen fertilization.
Article
Biochemistry & Molecular Biology
Francois Maillard, Peter G. Kennedy, Bartosz Adamczyk, Jussi Heinonsalo, Marc Buee
Summary: The study showed that the microbial communities and enzyme activities on decomposing fungal necromass remain dynamic years after initial input, with roots and their associated fungal symbionts resulting in the slowing of microbial necromass turnover with time.
Article
Soil Science
Ruibo Sun, Fenghua Wang, Chunsheng Hu, Binbin Liu
Summary: Excessive nitrogen fertilization in agricultural ecosystems affects microbial nitrogen-cycling processes in soil, with long-term nitrogen input increasing the abundance of microorganisms involved in most nitrogen-transforming processes but decreasing that of nitrogen-fixing assemblages. The composition of microbial groups involved in each nitrogen-transforming process is altered by fertilization, despite the abundance of functional genes remaining unchanged. Different microbial taxa respond differently to nitrogen fertilization within the same functional group, which may be important for sustaining microbial nitrogen cycling in complex and dynamic environments.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Environmental Sciences
Yo-Jin Shiau, Ed-Haun Chang
Summary: Constructed wetlands are widely used as low-cost wastewater treatment systems and provide various ecosystem services. Microorganisms in wetland soils play a fundamental role in supporting wetland functions. This study found that both bacterial and fungal abundances increased with wetland age, with bacteria dominating the soil microbial communities in all ages of constructed wetlands. The stress indices showed that microbial stress may be influenced by changes in the availability of in situ nutrients in the wetland soils.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biodiversity Conservation
Zhiming Zhang, Jun Yan, Xiaozeng Han, Wenxiu Zou, Xu Chen, Xinchun Lu, Yutian Feng
Summary: The highest contents of active SOC fractions were found in the organic manure (OM) treatment, while the highest maize yield was obtained in the chemical fertilizer with straw (CFS) treatment. Proteobacteria were widely distributed in all the fertilization treatments, and the dominant fungal phyla were Ascomycota in CK, CF and OM, and Basidiomycota in CFS treatment.
Soil bacterial/fungal communities and the active SOC fractions evidenced that fertilization, especially organic manure application, stimulated soil bacteria and fungi to participate in SOC turnover, contributing to improving the productivity and quality of black soil under sustainable management.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Environmental Sciences
Meng Wang, Yongbing Liu, Huading Shi, Shanshan Li, Shibao Chen
Summary: The study shows that the redox reaction of manganese plays a significant role in the mobilization of cadmium during the aeration of paddy soils. Extractable cadmium concentration decreases rapidly during reduction phases but increases upon oxidation, while the availability of Cd is influenced by soil pe + pH and extractable Mn concentration. Inhibiting the oxidation of Mn(II)-containing phases by microbes suppresses the production of hydroxyl free radicals (center dot OH) and Cd mobilization during drainage phase.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Meng Wang, Shibao Chen, Huading Shi, Yongbing Liu
Summary: Flooding in paddy soils can alter soil redox conditions and affect the availability of manganese (Mn) and cadmium (Cd) in rice cultivation. Exogenous Mn promotes binding of Cd with Fe-Mn(oxyhydro)oxides, and Cd isotopes exhibit systematic fractionation within the paddy soil-rice system. Heavy Cd isotopes are preferentially enriched in both liquid-phase and rice grain, with light isotopes likely to be enriched in Cd bound to Fe/Mn-oxides.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Lifu Wang, Luyao Qin, Xiaoyi Sun, Shuwen Zhao, Lei Yu, Meng Wang, Shibao Chen
Summary: This study investigated the effects of different saline stresses on the availability of cadmium and bacterial growth in soil. The results showed that the addition of salts increased the content of available cadmium, but inhibited bacterial growth. The study also evaluated the salt tolerance of the bacterial community and found that soil salinity significantly affected the availability of cadmium and the bacterial community.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Soil Science
Shuwen Zhao, Luyao Qin, Lifu Wang, Xiaoyi Sun, Lei Yu, Meng Wang, Shibao Chen
Summary: Ecological restoration is an effective technique for alleviating heavy metal pollution in open-pit mining soils. This study found that a combination of trees, shrubs, and grasses/herbs was the most effective for reducing available Pb content to 33.7% of the control, and reducing Cd content to 60.4% of the control.
SOIL USE AND MANAGEMENT
(2022)
Article
Engineering, Environmental
Xiaolin Cai, Zhennan Zhang, Naiyi Yin, Wenyi Lu, Huili Du, Mei Yang, Liwei Cui, Shibao Chen, Yanshan Cui
Summary: This study investigates the controlling mechanisms of microbial As(III) oxidation in As(III)-adsorbed Fe minerals through incubation with As(III)-oxidizing bacteria at different pH conditions. The results show that the percentage of As(III) oxidized to As(V) significantly increases under neutral and alkaline conditions. The As(III) adsorption complexes formed on hematite are more stable than those on magnetite, limiting the activity and mobility of strain HN-1.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Shuwen Zhao, Luyao Qin, Lifu Wang, Xiaoyi Sun, Lei Yu, Meng Wang, Shibao Chen
Summary: This study derives the ecological risk thresholds of zinc (Zn) in soil environments based on up-to-date risk assessments, which play a crucial role in soil protection policies. The study compiles a dataset of Zn ecotoxicities to different endpoints found in representative farmland soils of China and determines toxicological limits based on fitted dose-response models. Prediction models based on soil properties are also generated and validated in the field. This work provides a scientific framework for developing soil-specific guidance on Zn toxicity thresholds.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Shibao Chen, Li Chen, Duo Wang, Meng Wang
Summary: This study reveals a key mechanism controlling Cd stabilization in soil, providing a quantitative and mechanistic understanding of Cd remobilization. The study also suggests that under highly reducing soil conditions, methanogenesis outcompetes sulfate reduction for available electrons.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Luyao Qin, Lifu Wang, Shuwen Zhao, Xiaoyi Sun, Lei Yu, Meng Wang, Shibao Chen
Summary: This study found that low pe + pH is conducive to the immobilization of Cd in paddy soils, with Fe and S playing different dominant roles in Cd immobilization, and soil pe + pH value can work as a threshold.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Xiaoyi Sun, Luyao Qin, Lifu Wang, Shuwen Zhao, Lei Yu, Meng Wang, Shibao Chen
Summary: This study investigates the aging characteristics of chromium in soil and its quantitative relationship with soil properties. The results show that with the extension of aging time, the toxicity of chromium decreases and can be well explained by soil organic carbon, clay, and cation exchange capacity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Soil Science
Lei Yu, Luyao Qin, Xiaoyi Sun, Lifu Wang, Shibao Chen, Meng Wang
Summary: This study investigated the effect of intercropping wheat with herbaceous plants on soil Cd availability and rhizosphere metabolites. The results showed that herbaceous plants in the intercropping system increased wheat biomass and reduced Cd accumulation in wheat grains. The increased pH and cation exchange capacity in soil contributed to the decreased Cd availability, while up-regulation of fatty acid metabolism allowed wheat plants to maintain a normal intracellular environment under stress conditions. Furthermore, up-regulation of saccharide and amino acid metabolism inhibited the migration of soil Cd into wheat tissue by increasing wheat biomass and Cd-binding proteins.
SOIL USE AND MANAGEMENT
(2023)
Review
Environmental Sciences
Shanshan Li, Bing Yang, Meng Wang, Rong Zhang, Kun Chen, Zexin He, Huading Shi, Shibao Chen
Summary: This paper summarizes the development, influencing factors, and derivation methods of soil environmental quality standards (SEQSs) in China. The current version of SEQSs is more methodologically scientific, but there is a lack of toxicology data on soil pollution and inadequate consideration of influencing factors.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Luyao Qin, Xiaoyi Sun, Lei Yu, Jing Wang, Soroush Modabberi, Meng Wang, Shibao Chen
Summary: In this study, toxicological data of lead (Pb) were collected and a prediction model was established based on different soil properties to derive the hazard concentration for 5% of species (HC5). The study provides a scientific frame for deriving the ecological risk threshold of Pb and is of great significance for ecological species protection.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Luyao Qin, Lifu Wang, Xiaoyi Sun, Lei Yu, Meng Wang, Shibao Chen
Summary: This study assessed the toxicity of lead in different soils and established prediction models. The results have significant implications for deriving the toxicity threshold of lead and soil ecological risk assessment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Shuangshuang Li, Xianmin Huang, Guangxian Li, Ke Zhang, Liyong Bai, Huan He, Shibao Chen, Jiulan Dai
Summary: Humic acid amendments have been widely studied for the remediation of heavy metal-contaminated soils. This study investigated the effects of mineral-based humate substances on alkaline paddy soils contaminated with different levels of cadmium (Cd). The results showed that the application of mineral-based potassium humate (MBPH) effectively reduced the concentration of Cd in brown rice, alleviated Cd toxicity, and enhanced the accumulation of mineral elements in rice. The study also identified key factors affecting Cd accumulation in brown rice under different Cd-contaminated soils.
Article
Environmental Sciences
Lifu Wang, Luyao Qin, Xiaoyi Sun, Shuwen Zhao, Lei Yu, Shibao Chen, Meng Wang
Summary: This study investigated the effects of salt-induced changes in soil metabolites on cadmium bioavailability. The research found that salt stress resulted in soil metabolic reprogramming, leading to decreased wheat plant growth and increased migration of cadmium from the soil into wheat tissues.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)