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
Environmental Sciences
Gu Jiaofeng, Huo Yang, Zeng Peng, Liao Bohan, Zhou Hang
Summary: This study investigated the influence of phosphorus (P) on the formation of iron plaque on rice roots and its impact on cadmium (Cd) uptake. The results showed that while P supply enhanced the formation of iron plaque, it reduced the retention capability of Cd. Excessive P fertilizer application can lead to increased accumulation of Cd in rice plants.
Article
Environmental Sciences
Abu Bakkar Siddique, Mohammad Mahmudur Rahman, Md Rafiqul Islam, Ravi Naidu
Summary: The study highlights the decreasing grain and straw yield as Cd toxicity increases, and the significant impact of soil pH on Cd bioaccumulation in rice.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agronomy
Peiman Zandi, Jianjun Yang, Xing Xia, Beata Barabasz-Krasny, Katarzyna Mozdzen, Joanna Pula, Elke Bloem, Yaosheng Wang, Sajjad Hussain, Seyed Mohammad Hashemi, Bartosz Rozanowski, Qian Li
Summary: This study investigated the impact of sulfur on the chromium tolerance of rice plants and found that a moderate sulfur treatment can effectively reduce the bioavailability of chromium in rice shoots. The barrier capacity of iron plaque to chromium absorption in rice plants was found to be primarily influenced by the applied chromium concentration and the competition between chromium and sulfur at the absorbing sites.
Article
Environmental Sciences
Jing-Yi Zhang, Hang Zhou, Peng Zeng, Shi-Long Wang, Wen-Jun Yang, Fang Huang, Yang Huo, Shu-Ning Yu, Jiao-Feng Gu, Bo-Han Liao
Summary: This study investigated the effects of different exogenous iron materials on iron plaque formation on rice roots and its impact on the absorption, migration, and transportation of Cd and Fe in rice plants. The results showed that applying nano-Fe3O4-modified biochar (BC-Fe) promoted the formation of iron plaque and reduced the translocation and accumulation of Cd in aerial rice tissues. Different iron materials had varying effects on iron plaque formation, with BC-Fe showing a higher proportion of crystallized iron plaque and significantly reducing the translocation factor of Cd.
Article
Environmental Sciences
Shiwei Yan, Jianhao Yang, Youbin Si, Xianjin Tang, Youhua Ma, Wenling Ye
Summary: The supply of sulfate has been found to reduce the bioavailability of arsenic (As) and cadmium (Cd) in paddy soil contaminated with both metals. The effect of sulfate addition, however, varies depending on the soil environment, potentially due to differences in sulfate background levels. Additionally, the addition of sulfate stimulates the activity of sulfate-reducing bacteria, which can positively affect rice growth and physiological characteristics.
Article
Environmental Sciences
Jingbo Wang, Rui Yuan, Yuhao Zhang, Tianren Si, Hao Li, Huatai Duan, Lianqing Li, Genxing Pan
Summary: The use of rice straw and rape straw biochars can effectively reduce the concentration of cadmium in soil and decrease its uptake by rice plants. Rape straw biochar is more effective in reducing cadmium concentration in rice roots and improving soil properties. Biochar also prevents the transportation of cadmium from soil to rice roots by forming iron plaques.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biotechnology & Applied Microbiology
Bin Guo, Junli Liu, Chen Liu, Yicheng Lin, Hua Li, Dong Zhu, Quan Zhang, Xiaodong Chen, GaoYang Qiu, Qinglin Fu, Wenbin Tong, Jianfeng Jiang, Haiping Yu
Summary: Intercropping Sesbania with rice provides a sustainable mode for the biological control of cadmium translocation in crop grains, but the mechanisms of Cd reduction in rice grain are not yet fully understood.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Biotechnology & Applied Microbiology
Yan Ding, Menglian Ren, Shuangrong Mo, Jing Liu, Zegang Wang, Cailin Ge, Yulong Wang
Summary: This study investigated the regulation of the OsLPR1 gene on the formation of iron plaque on rice roots under low-phosphorus conditions. The results showed that low-phosphorus treatment induced the transcription of the OsLPR1 gene and increased the LPR1 protein content, leading to the formation of iron plaque on the rice root surface. Furthermore, the knockout of the OsLPR1 gene inhibited the formation of iron plaque under low-phosphorus treatment.
PLANT BIOTECHNOLOGY REPORTS
(2022)
Article
Metallurgy & Metallurgical Engineering
Qiang Zhao, Baibing Yang, Haowen Ren, Shihong Chen, Chunhui Luo, Quande Li, Wei Yang, Kangping Yan
Summary: The discharge of wastewater containing Cr(VI) and the accumulation of Fe-P slag pose a threat to the environment and human health. This paper proposes an approach that uses Fe-P slag as a reducing agent to completely remove Cr(VI) from the wastewater. Experimental study shows that the temperature and dosage of Fe-P slag significantly affect the reaction kinetics and removal efficiency. A simplified industrial procedure is also proposed for Cr(VI) removal without additional power input.
Article
Metallurgy & Metallurgical Engineering
Zi-yan Qian, Sheng-guo Xue, Meng-qian Cui, Chuan Wu, Wai-chin Li
Summary: The addition of FeOS can significantly reduce the arsenic content in paddy soils and increase rice biomass, possibly by promoting the formation of iron plaque and altering microbial community structure.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Environmental Sciences
Ru Wang, Yinglin Guo, Yang Song, Yuting Guo, Xiaomeng Wang, Quan Yuan, Zengping Ning, Chengshuai Liu, Lixiang Zhou, Guanyu Zheng
Summary: Planting rice in As-contaminated paddy soils can lead to As accumulation in rice grains, which can be aggravated by P fertilizers. However, remediation using Fe(III) oxides/hydroxides cannot effectively reduce grain As and maintain P fertilizer utilization simultaneously. In this study, schwertmannite was proposed as a remedy for flooding As-contaminated paddy soil due to its strong sorption capacity for As and its positive effect on P fertilizer utilization. The results showed that the application of schwertmannite along with P fertilization effectively reduced As mobility in the contaminated soil and increased soil P availability. Moreover, it reduced P content in Fe plaque on rice roots, benefiting P fertilizer utilization. The amendment of schwertmannite and P fertilizer together significantly reduced As content in rice grains and increased rice shoot biomass, achieving the dual goals of reducing grain As and maintaining P fertilizer utilization efficiency.
ENVIRONMENTAL POLLUTION
(2023)
Article
Plant Sciences
Quan Zhang, Qiren Wen, Tianchi Ma, QiHong Zhu, Daoyou Huang, Hanhua Zhu, Chao Xu, Haifei Chen
Summary: Exposure to cadmium (Cd) leads to severe leaf chlorosis and reduced nutrient uptake. This study investigated how plants respond to Cd stress in the roots and its relationship to leaf chlorosis. The results showed that Cd disrupted the balance of multiple nutrient elements at different levels, particularly Mn and Fe which declined by 96% and 89% respectively, leading to leaf chlorosis. Plants actively downregulated the expression of metal transporters to reduce Cd uptake, but this also resulted in reduced uptake of Fe and Mn. Additionally, Cd stress promoted the formation of iron plaque, reducing exchangeable ions on the root surface. Importantly, ethylene played a crucial role in regulating iron plaque formation and the forms of Cd. Blocking ethylene biosynthesis increased exchangeable Cd on the root surface and decreased the percentage of iron oxides bound Cd, leading to increased Cd accumulation in the shoots. In summary, this study revealed that plants actively control the expression of metal transporters and ethylene-dependent iron plaque formation to reduce Cd uptake but sacrifice iron nutrition. The mechanism of ethylene-sequestered Cd in the rhizosphere in response to Cd stress may provide guidelines for mitigating Cd accumulation in rice.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2023)
Article
Environmental Sciences
Pingfan Zhou, Peng Zhang, Mengke He, Yu Cao, Muhammad Adeel, Noman Shakoor, Yaqi Jiang, Weichen Zhao, Yuanbo Li, Mingshu Li, Imran Azeem, Like Jia, Yukui Rui, Xingmao Ma, Iseult Lynch
Summary: The study found that nano hydroxyapatite, iron oxide nanoparticles, and nano zero valent iron can significantly reduce the accumulation of cadmium in rice and promote plant growth. These nanoparticles reduce cadmium content through adsorption and the formation of iron plaques, and alleviate oxidative damage by regulating hormones, metal ion balance, and gene expression. This study provides a theoretical basis for using nanoparticles to reduce cadmium accumulation in edible plants.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Xiong Yang, Dongming Wang, Ye Tao, Min Shen, Wei Wei, Chuang Cai, Changfeng Ding, Jiuyu Li, Lian Song, Bin Yin, Chunwu Zhu
Summary: This study investigates the effects and mechanisms of elevated CO2 concentration on cadmium (Cd) uptake by rice in a 3-year experiment. The results show that increased CO2 concentration leads to higher levels of dissolved Fe2+ in soil, resulting in more low-crystalline Fe oxides being deposited on the root surface. This inhibits the uptake of Cd by rice.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
