Article
Environmental Sciences
Tao Zeng, Jingxia Guo, Yunyun Li, Guo Wang
Summary: This study found that oyster shell amendment can reduce the concentration of cadmium and lead in soil, while significantly increasing the pH of soil and pore water. The use of appropriate oyster shell amendment and selection of suitable rice cultivars can simultaneously reduce the accumulation of heavy metals in rice.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Environmental Sciences
Ronan Lordan, Ioannis Zabetakis
Summary: Cadmium poses a significant health risk globally, particularly in relation to pollution and human activities. The brown crab, which accumulates cadmium in its hepatopancreas, is an important species in the European crab-fishing industry. However, the presence of cadmium in brown crab meat has led to scrutiny and economic consequences for the industry. Current evidence suggests that moderate consumption of brown crab is safe for humans, but individuals with high cadmium intake from multiple food groups should be cautious in their dietary choices.
Article
Environmental Sciences
Xin Song, Jianpeng Jin, Haiyun Li, Fangli Wang, Jun Liu, Xuexia Wang, Xiaoli Huang, Chao Chai, Ningning Song, Haiying Zong
Summary: This study investigated the mechanism of action of kaolinite (KL) on peanut growth and cadmium (Cd) absorption in microplastics (MPs)- and heavy metals (HMs)-contaminated soil. KL can mitigate the negative effects of MPs on peanut dry weight, soil-bioavailable Cd content, and peanut Cd concentration. It can also increase soil pH and cation exchange capacity (CEC) and reduce the adverse influence of MPs on soil pH and CEC.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Engineering, Environmental
Kunyan Qiu, Linlin Zhao, Yongsheng An, Xiaohong Li, Zhijun Zhang
Summary: A mercapto iron complex functionalized nanosilica (RNS-SF) was prepared to improve the stability and immobilization efficiencies in Pb/Cd-contaminated soil. The results showed that RNS-SF had a stable immobilization efficiency for Pb and Cd, reducing environmental risks effectively.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Hong Xie, Zisheng Liao, Jun Li, Yongqiang Yang, Fanrong Chen, Runliang Zhu, Li Xiang, Shijun Wu
Summary: Calcium oxalate crystals in plants play an important role in detoxifying heavy metals, but the mechanism and influencing factors are still unclear. This study investigated the effect of exogenous calcium concentrations on cadmium uptake by amaranth and found that insufficient or excess calcium supply inhibited amaranth growth, while the cadmium bioconcentration factor increased with calcium concentration.
Article
Agronomy
Ping Liao, Shan Huang, Yongjun Zeng, Hua Shao, Jun Zhang, Kees Jan van Groenigen
Summary: Lime application significantly increases rice yield and soil pH, while reducing Cd concentrations in grains. The effects of lime on rice yield vary depending on soil pH and lime application rates, with higher lime application leading to greater reduction in Cd concentrations. Lime application at rates exceeding 1.0 and 6.0 t ha(-1) can effectively reduce Cd concentrations in grains to meet food safety standards.
Article
Engineering, Environmental
Jun Meng, Wenjin Li, Chengmei Diao, Zhangtao Li, Jiayi Zhao, Ghulam Haider, Haibo Zhang, Jun Xu, Minjun Hu, Shengdao Shan, Huaihai Chen
Summary: The mechanisms by which microplastics affect soil microbes and their metagenomic functioning are currently uncertain. In this study, we investigated the response mechanisms of bacterial and fungal communities to the addition of PVC microplastics in two soils with different pH and heavy metal levels. The results showed that PVC microplastics increased soil pH and reduced heavy metal availability, while also reducing bacterial diversity and interaction networks. Our study suggests that the addition of PVC microplastics could shift soil microbial community and metagenomic functioning.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Xueying Feng, Quanlong Wang, Yuhuan Sun, Shuwu Zhang, Fayuan Wang
Summary: This study investigated the impacts of different types of Microplastics (MPs) on Pb-Zn contaminated soil and found that MPs, especially at a dose of 2%, decreased the richness and diversity of bacterial communities, altered microbial community composition, and significantly affected soil properties and heavy metal availability. The effects were dependent on the type and dose of MPs.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Qiquan Li, Qian Deng, Hongyan Fang, Xuelian Yu, ZeMeng Fan, Zhengping Du, Meng Li, Qi Tao, Weiping Song, Bin Zhao, Chaoping Chen, Rong Huang, Dagang Yuan, Xuesong Gao, Bing Li, Changquan Wang, John P. Wilson
Summary: The study explored the key factors controlling Cd accumulation in the soil profile under actual field conditions, showing that phosphate fertilizer rates, parent material types, and precipitation affect Cd accumulation in agricultural soils. It was found that parent material is the decisive factor in determining the magnitudes and depths of exogenous Cd accumulation in the soil profile.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Michael Opoku Adomako, Fei-Hai Yu
Summary: This study found that light, water, and nutrient availability significantly affect the growth and heavy metal accumulation of hyperaccumulator plants. High water availability promotes biomass and height growth, but has both positive and negative effects on Cd accumulation. The impact of nutrients varies among different species. Light availability affects photosynthetic efficiency and electron transport rate.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Bing Zhao, Wenxuan Zhu, Shefeng Hao, Ming Hua, Qiling Liao, Yang Jing, Ling Liu, Xueyuan Gu
Summary: This study used machine learning models to predict heavy metal contents in rice crops and identified influencing factors. The Extremely Randomized Tree model showed the best performance for predicting Cd and Hg, while the Random Forest model was the best for As and Pb. The feature importance analysis revealed that soil-Cd and pH had the highest impact on rice-Cd risk, and temperature was important for rice-Hg bioaccumulation risk.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Nan Guo, Hui Ling, Renkui Yu, Fei Gao, Yue Cao, Jun Tao
Summary: This study discovered a novel SsIRT9 gene from Sailx suchowensis that enhances Cd accumulation in willow roots. The expression of SsIRT9 in tobacco resulted in higher Cd levels in shoots, demonstrating its potential for enhancing Cd extraction from soils.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Environmental Sciences
Francesca Pancaldi, Federico Paez-Osuna, Ana Judith Marmolejo-Rodriguez, Darren Andrew Whitehead, Rogelio Gonzalez-Armas, Martin Federico Soto-Jimenez, Todd O'Hara, Abraham Vazquez-Haikin, Felipe Galvan-Magana
Summary: The Gulf of California is an important hotspot for whale shark aggregation, but is also subject to pollutants such as trace elements. Research showed enrichment of all trace elements in both zooplankton and whale sharks during the period of 2017-2018.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Mohd Irfan Naikoo, Fariha Raghib, Mudasir Irfan Dar, Fareed Ahmad Khan, Kamel Hessini, Parvaiz Ahmad
Summary: This study investigated the transfer and accumulation of cadmium in a soil-faba bean-aphid-ladybird food chain, revealing a trend of cadmium enrichment and minimization within the chain. The transfer of cadmium in the food chain showed a dose-dependent pattern, indicating the complexity of cadmium dynamics in the ecosystem.
Article
Engineering, Environmental
Zi Yang, Hai-Tao Wu, Hao Yang, Wan-Di Chen, Jia-Lan Liu, Fan Yang, Li Tai, Bin-Bin Li, Bo Yuan, Wen-Ting Liu, Yan-Feng Zhang, Yan-Rong Luo, Kun-Ming Chen
Summary: Phytoextraction is an environmentally friendly phytoremediation technology that reduces the total amount of heavy metals in soil. In this study, we identified three different heavy metal transporters in the hyperaccumulator Sedum pumbizincicola that can transport cadmium. By overexpressing these transporters in high biomass and environmentally adaptable crops, the ability to accumulate cadmium and other heavy metals was significantly increased. These findings offer effective solutions for phytoextraction in both cadmium and multiple heavy metal-contaminated soils.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Plant Sciences
Md Maniruzzaman Sikder, Mette Vestergard, Tina Kyndt, Inge S. Fomsgaard, Enoch Narh Kudjordjie, Mogens Nicolaisen
Summary: The study revealed selective effects of benzoxazinoids on maize root-associated nematode communities, with different nematode species showing varied responses to different benzoxazinoid compounds.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Green & Sustainable Science & Technology
Soren Christensen, Wilhelmina H. Gera Hol, Viola Kurm, Mette Vestergard
Summary: Rare soil organisms can regulate the local activity of fast-growing microorganisms, reducing the probability of developing anoxic/microaerophilic soil volumes.
Article
Plant Sciences
Jesper Liengaard Johansen, Maiken Lundstad Nielsen, Mette Vestergard, Louise Hindborg Mortensen, Carla Cruz-Paredes, Regin Ronn, Rasmus Kjoller, Mads Hovmand, Soren Christensen, Flemming Ekelund
Summary: Wood ash, a by-product from energy production, can be recycled to forests to restore nutrients and prevent acidification. Despite low nitrogen concentrations, wood ash addition stimulates plant growth by increasing pH, nutrient levels, and nitrogen mineralization. Additionally, concerns about heavy metal accumulation in plants from wood ash application were not supported by the study's results.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
Article
Ecology
Victoria Munkager, Andreas Altenburger, Anders Prieme, Toke Bang-Andreasen, Regin Ronn, Mette Vestergard, Flemming Ekelund
Summary: Microorganisms in soil play a dual role in the nitrogen cycle, with their effect on plant growth modulated by nitrogen availability. While soil microbiome addition reduced shoot biomass consistently across different nitrogen amendments, the negative impact on shoot biomass was not influenced by nitrogen availability. This suggests that strategies focusing on microbial manipulation for plant growth should consider minimizing metabolic costs of microbiome interactions in addition to beneficial and pathogenic microorganisms.
EUROPEAN JOURNAL OF SOIL BIOLOGY
(2021)
Article
Environmental Sciences
Yingjie Wu, Susana S. Santos, Mette Vestergard, Ana M. Martin Gonzalez, Luyao Ma, Ying Feng, Xiaoe Yang
Summary: Hyperaccumulating ecotypes of Sedum plants show higher efficiency in phytoremediation in mine areas and farmlands compared to nonhyperaccumulating ecotypes, and rhizosphere co-occurrence networks for nonhyperaccumulating ecotypes are more complex. The microbiome assembly of Sedum plants is influenced by plant compartment and location, with specific bacterial genera potentially playing a role in promoting metal phytoremediation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Soil Science
Olivera Topalovic, Susana S. Santos, Holger Heuer, Joseph Nesme, Xorla Kanfra, Johannes Hallmann, Soren J. Sorensen, Mette Vestergard
Summary: Nematode-suppressive soils are characterized by microbial communities which can reduce populations of plant-parasitic nematodes. Different soil origins have a major effect on the composition of nematode-attached bacteria, with the highest bacterial abundance and richness observed in suppressive soils. Further research is needed to understand the complexity of nematode-microbial interactions and the exact role of nematode-attached microorganisms in nematode suppression and protection.
APPLIED SOIL ECOLOGY
(2022)
Article
Plant Sciences
Willem Desmedt, Enoch Narh Kudjordjie, Satish Namdeo Chavan, Juan Zhang, Riqing Li, Bing Yang, Mogens Nicolaisen, Masaki Mori, Reuben J. Peters, Bartel Vanholme, Mette Vestergard, Tina Kyndt
Summary: Rice diterpenoid phytoalexins play an important role in the interaction between rice and nematodes, influencing the composition of rhizosphere and root nematode communities.
Article
Ecology
Md Maniruzzaman Sikder, Mette Vestergard, Tina Kyndt, Olivera Topalovic, Enoch Narh Kudjordjie, Mogens Nicolaisen
Summary: Understanding the effects of secondary metabolites on nematode communities can help develop novel nematode management strategies. In this study, genetically altered Arabidopsis thaliana plants were used to analyze the root-associated nematode communities and their interaction with associated microbiota. The results showed that certain metabolites had stronger effects on plant parasitic nematodes, and the microbiomes from these plants also influenced the invasion ability of the parasitic nematode Meloidogyne incognita. Flavonoids were identified as potential mediators of this microbiome-mediated effect.
Article
Plant Sciences
Willem Desmedt, Enoch Narh Kudjordjie, Satish Namdeo Chavan, Sandrien Desmet, Mogens Nicolaisen, Bartel Vanholme, Mette Vestergard, Tina Kyndt
Summary: Induced resistance (IR) is an important component of plant immunity that enhances the resistance of plants to future (a)biotic challenges. In this study, the effects of four distinct IR stimuli on rice plants were investigated, and shared transcriptional responses and alterations to the root exudome were identified. The study also found that IR stimuli had an impact on the composition of root-associated nematode communities, but this effect was not long-lasting.
JOURNAL OF EXPERIMENTAL BOTANY
(2022)
Article
Agriculture, Multidisciplinary
Jawameer R. Hama, Kourosh Hooshmand, Bente B. Laursen, Mette Vestergard, Inge S. Fomsgaard
Summary: A metabolomics study using targeted mass spectrometry was conducted to investigate the root uptake of cereal benzoxazinoids (BXs) in white clover and their impact on intrinsic clover secondary metabolites. The study found that all BXs were taken up by the clover roots and translocated to the shoots, leading to changes in the composition of intrinsic clover secondary metabolites, particularly an increase in flavonoids and abscisic acid concentration.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Environmental Sciences
Jesper Liengaard Johansen, Marie Dam, Enoch Narh Kudjordjie, Susana Silva Santos, Annemette Palmqvist, Jakob Magid, Mette Vestergard
Summary: Recycling urban waste products such as human urine, composted household waste, and sewage sludge as fertilizers can reduce the use of NPK fertilizer, improve soil structure, and store carbon. However, there are concerns about the presence of heavy metals, persistent organic pollutants, and plastics in waste products, which may have detrimental effects on soil health.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Soil Science
Laura Helene Rasmussen, Louise H. Mortensen, Per Ambus, Anders Michelsen, Bo Elberling
Summary: This study examined the fate of nitrogen released in the Arctic landscape, finding that season progression is the key factor influencing NO3- concentrations and N2O fluxes. Nitrification replaced denitrification as the main source of N2O during the growing season due to increased soil temperatures and decreased soil moisture. The loss of gaseous N from the slope in the first month of thaw was minimal, with NO3- immobilized or taken up by plants, reducing N2O emissions.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Article
Engineering, Environmental
Zhenguang Lv, Min Xu, Ying Liu, Regin Ronn, Christopher Rensing, Song Liu, Shenghan Gao, Hao Liao, Yu-Rong Liu, Wenli Chen, Yong-Guan Zhu, Qiaoyun Huang, Xiuli Hao
Summary: Phagotrophic protist communities in long-term Cu-contaminated soils have important impacts on Cu-resistant bacterial populations. Certain communities, such as Cercozoa and Amoebozoa, increase the relative abundance of Cu-resistant bacteria, while the relative abundance of Ciliophora decreases. Phagotrophs positively influence the relative abundance of Cu-resistant and -sensitive ecological clusters, contributing to the abundance of the Cu resistance gene (copA).
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Microbiology
Olivera Topalovic, Frederik Bak, Susana Santos, Md Maniruzzaman Sikder, Rumakanta Sapkota, Flemming Ekelund, Mette Haubjerg Nicolaisen, Mette Vestergard
Summary: This study investigated the relationship between the activity of pre-infective juveniles (J2s) of root-knot nematodes and the recruitment of a specific microbiome on the nematode surface and/or the composition of the surrounding microbiota. The results showed that J2 activity was suppressed in soil suspensions but increased when suspensions were amended with P. protegens CHA0. The composition of surface-attached bacteria on active and non-motile J2s differed, and the presence of P. protegens CHA0 in the soil suspensions altered the bacterial composition.
FEMS MICROBIOLOGY ECOLOGY
(2023)