Article
Engineering, Environmental
Tho Huu Huynh Tran, Sang Hyun Kim, Ho Young Jo, Jaeshik Chung, Seunghak Lee
Summary: The water and oxygen contents of the vadose zone change cyclically depending upon meteorological conditions, affecting the biogeochemical reactions governing the fate of arsenic. Biotic reduction of As(V) to As(III) was observed in soil columns enriched with organic matter, with most of the As associated with soil particles rather than dissolved in pore water. Retention of As was enhanced in soil columns with higher Fe content and bulk density, but soil-bound As could be remobilized with the repetition of wetting and drying.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Daniela R. Carrijo, Gabriel T. LaHue, Sanjai J. Parikh, Rufus L. Chaney, Bruce A. Linquist
Summary: Exposure to arsenic through rice consumption is a growing concern. Alternate Wetting and Drying (AWD) irrigation practices can reduce arsenic accumulation in grain, but may increase cadmium levels. The severity of soil drying during AWD and the timing of AWD implementation are important factors affecting the accumulation of arsenic and cadmium in rice grain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Polymer Science
Xiaoqing Yuan, Jingxia Li, Lin Luo, Zhenyu Zhong, Xiande Xie
Summary: This study reviewed the mostly investigated polymeric materials for removing Cr(VI), emphasizing the strategies of assembling functional groups, reducing self-aggregation, and enhancing stability and mechanical strength to improve the performance of polymeric adsorbents. The maximum adsorption capacities of these polymers towards Cr(VI) ranged from 3.2 to 1185 mg/g according to the Langmuir isotherm model. Various mechanisms, including complexation, chelation, reduction, electrostatic attraction, anion exchange, and hydrogen bonding, were involved in the removal of Cr(VI). Factors such as pH, initial concentration, temperature, anions, and cations affected the adsorption of Cr(VI) and the regeneration of the adsorbents. The study provides insights for developing more robust polymeric adsorbents and promoting the treatment of Cr(VI)-containing wastewater.
Article
Engineering, Environmental
Ashley B. Davidson, Chris Holmden, Sulung Nomosatryo, Cynthia Henny, Roger Francois, Sean A. Crowe
Summary: The leaching of lateritic soils in Central Sulawesi Island, Indonesia can lead to drainage waters with high concentrations of Cr(VI). A remediation strategy involving FeSO4 solutions effectively removes Cr(VI) from the drainage, but the presence of Mn oxides may cause the oxidative remobilization of Cr(III) and lead to an increase in Cr(VI) concentration downstream. Further improvements to Cr(VI) remediation should focus on preventing the back reaction of Cr(III) with Mn oxides.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Agronomy
Hanghang Huang, Rongyue Xu, Jixiang Yu, Weiyang Zhang, Junfei Gu, Kuanyu Zhu, Jianhua Zhang, Jianchang Yang
Summary: This study investigated the interaction between irrigation regimes and nitrogen application rates in rice, and the results showed that under continuous flooding, the highest grain yield was achieved with a medium nitrogen application rate, while under alternate wetting and moderate drying, the grain yield was comparable between medium and high nitrogen application rates. Alternate wetting and moderate drying significantly increased the grain yield, nitrogen use efficiency, and water use efficiency compared to continuous flooding.
Article
Environmental Sciences
Tongliang Wu, Xiaodan Cui, Syed Tahir Ata-Ul-Karim, Peixin Cui, Cun Liu, Tingting Fan, Qian Sun, Hua Gong, Dongmei Zhou, Yujun Wang
Summary: This study investigates the effects of two common irrigation methods, alternate wetting and drying and continuous flooding, on the accumulation of antimony (Sb) in rice. The results show that continuous flooding immobilizes more Sb in soil, but facilitates Sb accumulation in rice. The findings contribute to the understanding of Sb speciation and behavior in soils with different water management regimes.
Article
Agronomy
Kaiwen Chen, Tao Ma, Jihui Ding, Shuang'en Yu, Yan Dai, Pingru He, Teng Ma
Summary: The sustainability of rice cultivation is threatened by water deficit and nitrogen abuse. Straw return combined with nitrogen reduction can improve nitrogen-use efficiency in rice production. This study investigated the effects of irrigation regime and straw return with nitrogen reduction on rice growth dynamics, grain yield, and water-nitrogen utilization. The results showed that controlled irrigation and drainage significantly improved rice grain yield and water productivity. Straw return with nitrogen reduction reduced rice growth traits, especially under continuously flooded conditions. However, under controlled irrigation and drainage, straw return with nitrogen reduction showed compensatory effects on photosynthetic and fluorescence traits, indicating a more eco-friendly and sustainable agronomic practice.
Article
Environmental Sciences
Xiuling Zhang, Yuanfeng Liu, Congju Li
Summary: The study revealed that the power performance of the microbial fuel cell (MFC) increases with the initial concentration of Cr (VI), while the removal efficiency of Cr (VI) is not significantly affected by the initial concentration. The MFC with an initial Cr (VI) concentration of 15 mg/L showed the highest removal efficiency of 66.5% for Cr (VI).
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Agronomy
Miki Ogasawara, Naoya Miyazaki, Gotaro Monden, Kenta Taniko, Sathya Lim, Masahide Iwata, Takashige Ishii, Jian Feng Ma, Ryo Ishikawa
Summary: A candidate gene responsible for higher grain zinc accumulation in rice was identified, potentially linked to a partial defect in anther dehiscence. The study highlighted the importance of balancing fertility and grain zinc levels as essential agronomic traits in rice. The results suggest that regulating the expression of specific genes involved in anther dehiscence could impact grain productivity and zinc accumulation in rice plants carrying the identified chromosomal segment.
THEORETICAL AND APPLIED GENETICS
(2021)
Article
Plant Sciences
Su Yang, Zaid Ulhassan, Aamir Mehmood Shah, Ali Raza Khan, Wardah Azhar, Yasir Hamid, Sajad Hussain, Mohamed Salah Sheteiwy, Abdul Salam, Weijun Zhou
Summary: The study demonstrated that the application of salicylic acid and silicon alone or in combination can effectively alleviate chromium toxicity in rice seedlings, improving plant growth and biomass, as well as maintaining plant resilience and nutrient balance.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Environmental Sciences
Flava Raphaela Carvalho Miranda Guedes, Camille Ferreira Maia, Breno Ricardo Serra da Silva, Bruno Lemos Batista, Mohammed Nasser Alyemeni, Parvaiz Ahmad, Allan Klynger da Silva Lobato
Summary: This research investigated the effects of 24-Epibrasnolide (EBR) on lead (Pb) stressed rice plants, showing that EBR can mitigate the negative impacts of Pb by improving root structures and antioxidant systems. EBR promoted root growth, increased epidermis thickness and aerenchyma area, providing higher protection against Pb2+ ions. Additionally, EBR increased the activity of antioxidant enzymes, reducing oxidative stress in Pb-stressed plants.
ENVIRONMENTAL POLLUTION
(2021)
Article
Agronomy
Guilherme Menegol Turra, Luan Cutti, Paula Sinigaglia Angonese, Carlos Henrique Paim Mariot, Catarine Markus, Aldo Merotto Junior
Summary: This study aimed to determine the interaction of water depth, flooding irrigation onset, and preemergent herbicides on the control of barnyardgrass populations and to identify the variability and putative genes involved in the regulation of flooding tolerance in this species. The results showed that early flooding in the V2 stage increased rice grain yield and favored barnyardgrass control. However, variability in flood tolerance was identified in barnyardgrass populations, which may affect the effectiveness of early flooding for weed control in rice crops.
FIELD CROPS RESEARCH
(2023)
Article
Environmental Sciences
Lin Wang, Khaliunaa Bayanbold, Lei Zhao, Yifang Wang, Andrea Adamcakova-Dodd, Peter S. Thorne, Hushan Yang, Bing-Hua Jiang, Ling-Zhi Liu
Summary: This study found that hexavalent chromium (Cr(VI)) treatment can upregulate the expression of Nrf2, and the upregulation of Nrf2 is mediated by the downregulation of KEAP1 in the late stage of exposure. Additionally, the study also revealed that Cr(VI) exposure leads to the inhibition of miR-27a/b, resulting in the upregulation of Nrf2. These findings highlight the important role of redox-sensitive miR-27a/b in the regulation of Nrf2 upon Cr(VI) exposure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Construction & Building Technology
Hesong Jin, Jun Liu, Daojun Zhong, Luping Tang
Summary: In this study, the migration of chloride in concrete under different dry-wet cycles was investigated. The saturation of concrete decreased rapidly with increasing number of wet-dry cycles. The chloride content was proportional to the number of wet-dry cycles near the surface, but the concentration was smaller in the interior of concrete. The deterioration of pore structure and the decrease in compactness of concrete accelerated the migration of chloride in the matrix.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Agronomy
Weiyang Zhang, Jixiang Yu, Yunji Xu, Zhiqin Wang, Lijun Liu, Hao Zhang, Junfei Gu, Jianhua Zhang, Jianchang Yang
Summary: The study shows that the adoption of an appropriate proportion of PCU and CU rates under an alternate wetting and moderate drying irrigation regime can synergistically increase grain yield and resource use efficiency in rice by enhancing root and shoot growth, increasing nitrogen use efficiency, and optimizing biological processes.
FIELD CROPS RESEARCH
(2021)
Article
Environmental Sciences
Wendan Xiao, Xuezhu Ye, Zhiqiang Zhu, Qi Zhang, Shouping Zhao, De Chen, Na Gao, Jing Hu
Summary: The study found that water management and biochar addition significantly influenced the soil redox potential, pH, dissolved organic carbon, and Fe(II) concentration, affecting the transformation of Cr. Different treatments resulted in distinct dynamics of Cr(III) and Cr(VI) concentrations, with continuous flooding combined with 10 g kg(-1) of biochar showing the most effective reduction of Cr(VI). This combination also led to a significant decrease in Cr accumulation in rice grains and improved rice grain weight, indicating its potential for mitigating the impacts of Cr contamination on rice production in contaminated soils.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Qi Tao, Radek Jupa, Qin Dong, Xin Yang, Yuankun Liu, Bing Li, Shu Yuan, Junjie Yin, Qiang Xu, Tingqiang Li, Changquan Wang
Summary: The plant hormone abscisic acid (ABA) plays a crucial role in the acclimation of plants to heavy metal stresses, affecting long-distance transport pathways and the accumulation of cadmium (Cd) in the plant. Different ecotypes of plants respond differently to ABA levels when exposed to Cd stress, ultimately impacting the transport and accumulation of Cd in the plant.
Article
Environmental Sciences
Wendan Xiao, Xuezhu Ye, Zhiqiang Zhu, Qi Zhang, Shouping Zhao, De Chen, Na Gao, Jing Hu
Summary: Continuous flooding irrigation can reduce chromium accumulation in rice plants and enhance the barrier capacity of iron plaque, effectively minimizing chromium transfer to rice roots.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Analytical
Qi Zhang, De Chen, Wendan Xiao, Shouping Zhao, Xuezhu Ye, Hui Li
Summary: The study found that the removal efficiencies of Cu and Zn showed different trends in different atmospheres, with chloride addition being particularly sensitive for Zn removal during pyrolysis. The atmosphere significantly affected the removal of Cu. After pyrolysis, the main P-bearing phases were Ca-5(PO4)3Cl and Mg-3(PO4)2, except for Ca(PO3)2 replacing Mg-3(PO4)2 at 900 degrees C under CO2.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Agronomy
Di Liu, Rukhsanda Aziz, Md Jahidul Islam Shohag, Lingli Lu, Yuyan Wang, Ying Feng, Tingqiang Li, Mei Wang, Shengke Tian, Xiaoe Yang, Siyu Chen, Mingguang Tu, Zhiqiang Wang
Summary: Tetracycline has cytotoxic effects on human liver cells and extracellular ALT activity can be used as an indicator for monitoring soil TC contamination.
Article
Environmental Sciences
Wendan Xiao, Xuezhu Ye, Zhengqian Ye, Qi Zhang, Shouping Zhao, De Chen, Na Gao, Miaojie Huang
Summary: Combining biochar with irrigation management can alter the microbial community and remediate heavy metal-contaminated soils. This study found that the addition of biochar and continuous flooding irrigation significantly reduced the concentration of Cr(VI) in soil and increased microbial diversity and abundance. Furthermore, the combined treatment stimulated the growth of Fe-reducing/oxidizing bacteria and sulfate-reducing bacteria, promoting Cr(VI) reduction and detoxification.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Jipeng Luo, Shaohua Gu, Xinyu Guo, Yuankun Liu, Qi Tao, He-Ping Zhao, Yongchao Liang, Samiran Banerjee, Tingqiang Li
Summary: Persistent microbial symbioses can offer advantages to plants in unfavorable conditions. This study focuses on the core microbiomes that consistently inhabit the rhizosphere of certain plants and explores their influence on plant growth and metal tolerance. The research reveals the existence of a conserved core rhizosphere microbiota in Cd hyperaccumulators and accumulators, and suggests that these core microorganisms play a crucial role in plant fitness and Cd accumulation. The findings provide a foundation for using root microbiomes to restore metal-disturbed soils.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Wendan Xiao, Qi Zhang, Shouping Zhao, De Chen, Na Gao, Miaojie Huang, Xuezhu Ye
Summary: This study investigates the effects of rice root exudates on chromium transformation in paddy soils and provides insights into the underlying mechanisms. The results show that root exudates, particularly citric acid, greatly facilitate the reduction of Cr(VI) through microbial sulfur and iron cycles, with Desulfovibrio, Thiobacillus, and Geobacter being the key microbial genera involved.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Soil Science
Jipeng Luo, Guangcheng Liao, Samiran Banerjee, Shaohua Gu, Jiabin Liang, Xinyu Guo, Heping Zhao, Yongchao Liang, Tingqiang Li
Summary: Long-term intensive fertilization is a global practice that alters soil microbiome and affects the resilience of soil multifunctionality to biodiversity loss. This study found that organic fertilization promotes the resilience of both single functions and soil multifunctionality compared to mineral fertilization. Bacterial diversity is significantly and positively related to multifunctionality, and the diversity-multifunctionality relationships are stronger in organically fertilized soil.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Soil Science
Jipeng Luo, Samiran Banerjee, Qingxu Ma, Guangcheng Liao, Bifeng Hu, Heping Zhao, Tingqiang Li
Summary: Long-term intensive fertilization can greatly alter soil properties and microbial diversity. In this study, we manipulated microbial alpha-diversity to investigate the effects of biotic and abiotic factors on soil microbial mediated functions (MMF). We found that organic fertilization enhanced the resilience of bacterial assemblages to biodiversity loss and increased the positive relationship between soil MMF and bacterial diversity. Factors including diversity and microbiome complexity accounted for 43% of the variation in MMF. Our study highlights the importance of fertilization-induced shifts in network complexity and microbial life strategies for maintaining stable MMF and suggests the need for organically based strategies to mitigate the negative impacts of biodiversity loss on agroecosystem functions.
BIOLOGY AND FERTILITY OF SOILS
(2023)
Article
Environmental Sciences
Nabila Bano, Sangar Khan, Yasir Hamid, Muhammad Asmat Ullah, Abdul Ghaffar Khan, Faiza Bano, Jipeng Luo, Tingqiang Li
Summary: This study aims to assess the impact of multiple nanoparticles on Cd toxicity in lettuce and found that nSiL + Cd, nZnL + Cd, and nTiL + Cd are more effective in improving growth and photosynthetic efficiency. Nanoparticles can reduce the accumulation of ROS and MDA in lettuce, while enhancing antioxidant enzyme activity. Nanoparticles have high tolerance against Cd and can reduce Cd accumulation in lettuce. This study highlights the importance of nanoparticles in mitigating Cd toxicity in lettuce.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
