Article
Biotechnology & Applied Microbiology
Elizabeth French, Jessica A. Kozlowski, Annette Bollmann
Summary: The study found that ammonia-oxidizing archaea are more abundant in systems with low ammonium availabilities, while ammonia-oxidizing bacteria are more abundant when ammonium availability increases. Population dynamics of ammonia oxidizers may shift in response to changes in ammonium concentrations.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Soil Science
Yongxin Lin, Hang-Wei Hu, Guiping Ye, Jianbo Fan, Weixin Ding, Zi-Yang He, Yong Zheng, Ji-Zheng He
Summary: The meta-analysis of laboratory incubation studies with 1-octyne as the nitrification inhibitor shows that AOB play a more dominant role in soil nitrification in cropland than in wetland soils, indicating a major role of AOB in acidic soil nitrification. Moreover, the reduction of nitrification rate by 1-octyne is greater in soils incubated in slurry and with nitrogen additions, suggesting AOB's importance in nitrification in global acidic soils.
Article
Microbiology
Jonathan Rodriguez, Seemanti Chakrabarti, Eunkyung Choi, Nisreen Shehadeh, Samantha Sierra-Martinez, Jun Zhao, Willm Martens-Habbena
Summary: The discovery of ammonia-oxidizing archaea (AOA) and complete ammonia-oxidizing (comammox) bacteria in terrestrial ecosystems highlights their important role in nitrification. A nutrient-limited enrichment strategy was found to favor the growth of comammox bacteria with high affinity and yield. Direct enrichment from soil and nutrient-limited sub-cultivation consistently yielded high enrichments of Nitrosocosmicus-affiliated AOA associated with multiple canonical nitrite-oxidizing Nitrospira strains.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Environmental Sciences
Ting Lan, Yuxiao Huang, Xi Song, Ouping Deng, Wei Zhou, Ling Luo, Xiaoyan Tang, Jian Zeng, Guangdeng Chen, Xuesong Gao
Summary: Nitrogen management measures such as urease inhibitors, synthetic nitrification inhibitors, and biochar are commonly used in agriculture to mitigate nitrogen loss and increase fertilizer recovery efficiency. In a study conducted on calcareous soil under rice cropping, it was found that a combination of BNIs and UIs had the most effective results in reducing nitrogen loss and improving FRE by utilizing synergistic effects.
ENVIRONMENTAL POLLUTION
(2022)
Article
Soil Science
Rui Xiao, Wei Ran, Shuijin Hu, Hui Guo
Summary: This passage discusses the importance of ammonia-oxidizing archaea and bacteria in nitrification processes, highlighting that the impact of biotic factors on these organisms is not well understood.
APPLIED SOIL ECOLOGY
(2021)
Article
Environmental Sciences
Xia Jia, Yunfeng Gao, Xiaodi Li, Yonghua Zhao, Lu Wang, Chunyan Zhang
Summary: This study investigated the impacts of elevated CO2 and cadmium levels on soil nitrification in the rhizosphere of Robinia pseudoacacia L. seedlings. The results showed that elevated CO2 combined with Cd pollution generally stimulated nitrification enzyme activities and influenced bacterial community structures.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Soil Science
Haiyang Liu, Hangwei Hu, Xing Huang, Tida Ge, Yongfu Li, Zhenke Zhu, Xingmei Liu, Wenfeng Tan, Zhongjun Jia, Hongjie Di, Jianming Xu, Yong Li
Summary: Chemoautotrophic canonical ammonia-oxidizers play a significant role in autotrophic nitrification during the mineralization of organic substances with low C/N ratios in paddy soils, as shown by N-15 tracing and DNA-SIP techniques.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Environmental Sciences
Feng Wang, Xiaolong Liang, Shihan Ma, Lingzhi Liu, Jingkuan Wang
Summary: The study found that ammonia-oxidizing archaea and ammonia-oxidizing bacteria had significantly higher transcriptional abundance of amoA gene in soils compared to complete ammonia oxidizers, suggesting the former may be the dominant contributors to soil nitrification. Seasonal variation and fertilization regimes substantially affected the abundance of ammonia-oxidizing microbes, with ammonia-oxidizing bacteria being less sensitive to these factors compared to ammonia-oxidizing archaea.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Article
Soil Science
Ting Lan, Mengxiao Li, Xiaoqian He, Ouping Deng, Wei Zhou, Ling Luo, Guangdeng Chen, Shu Yuan, Jing Ling, Min Zeng, Xuesong Gao
Summary: An aerobic N-15 microcosmic experiment was conducted to compare the inhibitory effects of the biological nitrification inhibitor (BNI), methyl 3-(4-hydroxyphenyl) propionate (MHPP) and the synthetic nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on the gross nitrification rate and the abundance and community composition of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in contrasting soils. The results showed that the two inhibitors had different effects on nitrification rates and the response of AOB to the inhibitors was more sensitive.
BIOLOGY AND FERTILITY OF SOILS
(2022)
Article
Environmental Sciences
Dumsane Themba Matse, Paramsothy Jeyakumar, Peter Bishop, Christopher W. N. Anderson
Summary: This study investigated the effects of applying Cu-complexing compounds on nitrification rate, abundance of ammonia-oxidizing bacteria and archaea genes, and mineral nitrogen leaching in urine patches. The results showed that using organic compounds such as co-poly-acrylic-maleic acid and calcium lignosulphonate can significantly reduce the copper content in the soil, thereby reducing mineral nitrogen leaching.
ENVIRONMENTAL POLLUTION
(2023)
Article
Biodiversity Conservation
Di Liang, G. Philip Robertson
Summary: The long-term contribution of nitrification to nitrous oxide (N2O) emissions as well as the proportion of N2O derived from nitrification in different ecosystems remains uncertain, with actual values likely to be lower than estimated due to low N2O yields in cultured nitrifiers and competing sinks for available NH4+.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Soil Science
Jiali Sun, Zed Rengel, Yizhen Zhou, Hongbo Li, Aiping Zhang
Summary: This study investigated the impact of biochar and N fertilizer on nitrification and potential ammonia oxidation in alkaline soil. The results showed that biochar and N fertilizer affected the abundance and diversity of AOA, AOB, and comammox. N fertilizer decreased the nitrification rate and potential ammonia oxidation, while biochar increased the soil nitrification rate. AOB and comammox made a larger contribution to nitrification than AOA in the alkaline soil.
APPLIED SOIL ECOLOGY
(2024)
Article
Soil Science
Konrad Egenolf, Philipp Schad, Ashly Arevalo, Daniel Villegas, Jacobo Arango, Hannes Karwat, Georg Cadisch, Frank Rasche
Summary: Brachiaria humidicola (syn. Urochloa humidicola) has been recognized for controlling soil nitrification through releasing nitrification inhibitors (NI), termed as biological nitrification inhibition (BNI), which can reduce net nitrification rates by 50 to 85%. Adjustment of soil pH and microbial background has little influence on BNI performance, while the decrease in net nitrification rates mainly depends on microbial N immobilization and efficient plant N uptake.
BIOLOGY AND FERTILITY OF SOILS
(2022)
Article
Plant Sciences
Adrian Bozal-Leorri, Guntur Subbarao, Masahiro Kishii, Leyre Urmeneta, Victor Kommerell, Hannes Karwat, Hans-Joachim Braun, Pedro Ma Aparicio-Tejo, Ivan Ortiz-Monasterio, Carmen Gonzalez-Murua, Ma Begona Gonzalez-Moro
Summary: Synthetic nitrification inhibitors (SNI) and biological nitrification inhibitors (BNI) are promising tools to limit agricultural nitrogen pollution. Introducing the chromosome region (Lr#n-SA) controlling BNI production into wheat cultivars can enhance nitrogen uptake and utilization.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Soil Science
V. A. Tzanakakis, A. E. Taylor, P. J. Bottomley
Summary: This study provides insights into the impact of crop residues on nitrification activity in different soil types. It shows that ammonia oxidizing archaea (AOA) dominate nitrification in some soils, while ammonia oxidizing bacteria (AOB) dominate in others. Furthermore, crop residues can limit the nitrification activity of AOB. These findings are important for understanding the effects of crop residues on nitrogen cycling in soils.
APPLIED SOIL ECOLOGY
(2022)
Article
Environmental Sciences
Jun Meng, Yan Li, Yingbo Qiu, Yu Luo, Yunying Fang, Lukas Van Zwieten, Hailong Wang, Huaihai Chen
Summary: This study found that the addition of biochar significantly altered the bacterial community composition and potential functions in the charosphere, while reducing soil acidity and heavy metal stress.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Plant Sciences
Xuebin Yan, Mayank Kohli, Yue Wen, Xiaoyi Wang, Yuanyuan Zhang, Fei Yang, Xianhui Zhou, Guozhen Du, Shuijin Hu, Hui Guo
Summary: Foliar fungal pathogens can reduce plant biomass and their effects can be influenced by environmental conditions. We conducted a 4-year field experiment in a Tibetan alpine meadow to examine the interactive effects of nitrogen addition, warming, and foliar pathogens on plant biomass. Our results showed that nitrogen addition weakened the positive nitrogen effect on plant biomass due to the suppression of plant community biomass by foliar fungal pathogens. Furthermore, changes in plant functional traits and reduced species richness amplified the pathogen effect under nitrogen addition.
JOURNAL OF ECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yu Wang, Yuanyuan Huang, Lian Song, Jiahui Yuan, Wei Li, Yongguan Zhu, Scott X. Chang, Yiqi Luo, Philippe Ciais, Josep Penuelas, Julie Wolf, Barbara J. Cade-Menun, Shuijin Hu, Lei Wang, Dengjun Wang, Zengwei Yuan, Yujun Wang, Jishuang Zhang, Ye Tao, Shenqiang Wang, Gang Liu, Xiaoyuan Yan, Chunwu Zhu
Summary: Long-term free air carbon dioxide enrichment experiments on rice plants show that plant-available phosphorus declines in paddy soils as atmospheric CO2 increases. The decline in phosphorus concentration is attributed to the production of soil organic phosphorus that is not readily available to plants, as well as increased loss through crop harvest. These findings suggest that future CO2 scenarios may lead to reduced rice yields, particularly in low-income countries, unless additional phosphorus fertilizers are applied.
Article
Microbiology
Jialin Hu, Grady Miller, Wei Shi
Summary: The study aimed to characterize drought-responsive bacteria and fungi in the roots and rhizosphere of different tall fescue cultivars. The bacterial and fungal communities in roots, rhizosphere and bulk soil were examined for abundance, diversity, and composition. The study revealed significant differences in microbial community composition and structure between non-irrigated and irrigated samples, as well as the impact of tall fescue cultivars on endophytic microbial communities.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Multidisciplinary Sciences
Meifeng Deng, Shuijin Hu, Lulu Guo, Lin Jiang, Yuanyuan Huang, Bernhard Schmid, Chao Liu, Pengfei Chang, Shan Li, Xiaojuan Liu, Keping Ma, Lingli Liu
Summary: Mycorrhizae are symbiotic associations between terrestrial plants and fungi. The type of mycorrhizae critically controls the effect of diversity on productivity. AM trees increase productivity with increasing diversity, while EcM trees decrease productivity. This is because AM trees are more effective in acquiring nitrogen and phosphorus.
Article
Biodiversity Conservation
Tongshuo Bai, Peng Wang, Yunpeng Qiu, Yi Zhang, Shuijin Hu
Summary: Global climate warming has no significant effect on soil carbon (C) stock, but it can increase root biomass and soil respiration, depending on soil nitrogen (N) availability. The availability of soil C to N critically mediates warming effects on soil C dynamics, and incorporating this into C-climate models may improve the prediction of soil C cycling under future global warming scenarios.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Soil Science
Mu Su, Jiajie Mei, Gilberto de Oliveira Mendes, Da Tian, Limin Zhou, Shuijin Hu, Zhen Li
Summary: Red soils in subtropical regions are often deficient in available phosphorus, which is essential for plant growth. Phosphate-solubilizing microorganisms (PSMs) can release phosphorus from phosphate reservoirs, but their interactions with minerals in red soils are not fully understood. This study investigated the effects of Aspergillus niger, a phosphate-solubilizing fungus, on phosphorus dissolution in acidic and alkaline red soils. In the acidic soil, A. niger promoted phosphorus release and decreased the content of Fe/Al oxides. In the alkaline soil, phosphorus availability declined after A. niger addition due to the diminished function of PSMs and strong soil buffering.
SOIL USE AND MANAGEMENT
(2023)
Article
Agronomy
Carley Meeks, Miguel Cabrera, Resham Thapa, Nadia Noor, Steven Mirsky, Chris Reberg-Horton
Summary: This study aims to improve a sub-module within the CC-NCALC that simulates water content and water potential of cover crop residues. The results showed that the water release curves of residues change with decomposition and lignin concentration, and the rewetting rate of residues depends on soluble carbohydrate concentrations.
Article
Agronomy
April M. Dobbs, Daniel Ginn, Soren Kelstrup Skovsen, Ramawatar Yadav, Prashant Jha, Muthukumar Bagavathiannan, Steven B. Mirsky, Chris S. Reberg-Horton, Ramon G. Leon
Summary: This study investigates the feasibility of using Structure-from-Motion (SfM) photogrammetry to estimate biomass in cereal rye and winter wheat cover crops. The results show that SfM can provide more accurate estimation of biomass by capturing species-level differences in canopy architecture, compared to using canopy height alone.
FIELD CROPS RESEARCH
(2023)
Article
Multidisciplinary Sciences
Resham Thapa, Miguel Cabrera, Harry H. Schomberg, Chris Reberg-Horton, Hanna Poffenbarger, Steven B. Mirsky
Summary: During the decomposition of plant litter, its mass decreases exponentially, which is influenced by the litter type and overall quality. Our study results indicate that the initial chemistry of the litter plays a strong control role in the chemical composition during the decomposition process.
Article
Environmental Sciences
Yu Huang, Wei Shi, Qi Fu, Yingbo Qiu, Jiayi Zhao, Jiaxin Li, Qian Lyu, Xian Yang, Jia Xiong, Wenzhi Wang, Ruiying Chang, Zhiyuan Yao, Zhongmin Dai, Yunpeng Qiu, Huaihai Chen
Summary: Glacier retreat caused by global warming may affect soil organic carbon and nutrient cycling. However, the changes in soil microbial functional profiles, especially those related to carbon metabolism, during soil development following glacier retreat are still unknown.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agronomy
Ramon G. Leon, Fernando H. Oreja, Steven B. Mirsky, Chris Reberg-Horton
Summary: Replacement series experiments are commonly used to study the dynamics of competition at different levels, but inherent biases associated with plant size differences and density-dependent responses have been a concern. This study explored three models to determine reference densities for replacement series experiments and found that using functional densities based on biomass accumulation inflection point can minimize biases and provide more accurate characterization of competitive responses.
Article
Microbiology
Jialin Hu, K. Taylor Cyle, Grady Miller, Wei Shi
Summary: This study investigates the microbial responses to water deficits in different microhabitats of bermudagrass and reveals that the root endophytic Actinobacteria play a crucial role in improving the grass's fitness under drought stress.
FEMS MICROBIOLOGY ECOLOGY
(2023)
Article
Soil Science
Shuiqing Chen, Jusheng Gao, Huaihai Chen, Zeyuan Zhang, Jing Huang, Lefu Lv, Jinfang Tan, Xiaoqian Jiang
Summary: Understanding the transformation and turnover of soil phosphorus, as well as the microbial community, especially phosphate-solubilizing microorganisms, under different fertilization managements is crucial for evaluating sustainable phosphorus fertility in agriculture. Long-term experiments with various fertilizers in paddy red soils showed that inorganic phosphorus fertilization increased the concentrations of total phosphorus, available phosphorus, and inorganic phosphorus. On the other hand, organic fertilization accelerated the accumulation of organic phosphorus. Additionally, the composition of phosphate-solubilizing microorganisms was greatly influenced by fertilization managements and the rhizosphere.
Article
Soil Science
Qing Xia, Joshua L. Heitman, Wei Shi
Summary: This study examined the impact of soil texture and structure on microbial diversity and composition, and found that soil pore size distribution plays an important role in shaping microbial associations. The results provide new insights into how soil structure regulates microbial interactions and the degradation of organic matter.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)