Search results for: Renwei Feng

Items from 1 to 20 out of 25 results

article

Effects of foliar dressing of selenite and silicate alone or combined with different soil ameliorants on the accumulation of As and Cd and antioxidant system in Brassica campestris

Yongzhen Ding, Yongjiu Wang, Xiangqun Zheng, Weimin Cheng, more

Ecotoxicology and Environmental Safety > 2017 > 142 > C > 207-215

This study was conducted to investigate the possibility of using a combined technology to synchronously reduce As and Cd accumulation in the edible parts of Brassica campestris. The results showed that a foliar application of selenite (Se) and silicon (Si) combined with soil ameliorants (including Ca-Mg-P fertilizer, sodium silicate and red mud) showed limited effects on the growth of B. campestris...

article

Ionomic and transcriptomic analysis provides new insight into the distribution and transport of cadmium and arsenic in rice

Xuemin Feng, Lei Han, Daiyin Chao, Yan Liu, more

Journal of Hazardous Materials > 2017 > 331 > C > 246-256

To identify the key barrier parts and relevant elements during Cd/As transport into brown rice, 16 elements were measured in 14 different parts of 21 rice genotypes; moreover, transcriptomic of different nodes was analyzed. Cd/As contents in root and nodes were significantly higher than those other parts. Node I had the highest Cd content among nodes, leading an increase in gene expressions involved...

article

Root application of selenite can simultaneously reduce arsenic and cadmium accumulation and maintain grain yields, but show negative effects on the grain quality of paddy rice

Guojian Liao, Yi Xu, Cheng Chen, Qianhua Wu, more

Journal of Environmental Management > 2016 > 183 > P3 > 733-741

Most current technologies can hardly simultaneously reduce the accumulation of arsenic (As) and cadmium (Cd) in crops. In this study, root application of selenite [Se (IV)] and selenate [Se (VI)] was used to assess their abilities to reduce the accumulation of As and Cd, and maintain the yields and quality of rice grains. The results show that Se (IV) showed a weaker ability than Se (VI) to maintain...

article

Interactions between selenite and different forms of antimony and their effects on root morphology of paddy rice

Qianhua Wu, Renwei Feng, Junkang Guo, Ruigang Wang, more

Plant and Soil > 2017 > 413 > 1-2 > 231-242

Background and Aims The effects of Sb(V), alone or combined with Se, on the growth and root development of plants are unknown. The aim of this study is to investigate the interaction between selenite and different forms of Sb and the effects on their uptake in rice and on rice root morphology. Methods A hydroponic experiment was conducted that contained fourteen treatments. The treatment levels...

article

Effects of Double Harvesting on Heavy Metal Uptake by Six Forage Species and the Potential for Phytoextraction in Field

Ningyu LI, Bin GUO, Hua LI, Qinglin FU, more

Pedosphere > 2016 > 26 > 5 > 717-724

The pollution of soils by heavy metals has dramatically increased in recent decades. Phytoextraction is a technology that extracts elements from polluted soils using hyperaccumulator plants. The selection of appropriate plant materials is an important factor for successful phytoextraction in field. A field study was conducted to compare the efficiency of six high-biomass forage species in their phytoextraction...

article

Efficiency evaluation for remediating paddy soil contaminated with cadmium and arsenic using water management, variety screening and foliage dressing technologies

Guojian Liao, Qianhua Wu, Renwei Feng, Junkang Guo, more

Journal of Environmental Management > 2016 > 170 > C > 116-122

Paddy soils in many regions of China have been seriously polluted by multiple heavy metals or metalloids, such as arsenic (As), cadmium (Cd) and lead (Pb). In order to ensure the safety of food and take full advantage of the limited farmland resources of China, exploring an effective technology to repair contaminated soils is urgent and necessary. In this study, three technologies were employed, including...

article

Evaluation of silkworm excrement and mushroom dreg for the remediation of multiple heavy metal/metalloid contaminated soil using pakchoi

Ruigang Wang, Junkang Guo, Yingming Xu, Yongzhen Ding, more

Ecotoxicology and Environmental Safety > 2016 > 124 > C > 239-247

The economical, environmental friendly and efficient materials to remediate the pollution with multiple heavy metals and metalloids are scarce. Silkworm excrement (SE) and mushroom dregs (MD) are two types of agricultural wastes, and they are widely used to improve the soil fertility in many regions of China. A pot experiment with sixteen treatments was set up to assess the possibility of using SE...

article

Responses of root growth and antioxidative systems of paddy rice exposed to antimony and selenium

Renwei Feng, Guojian Liao, Junkang Guo, Ruigang Wang, more

Environmental and Experimental Botany > 2016 > 122 > C > 29-38

Antimony (Sb) is a toxic element for plant; however, its toxic mechanisms, in particular for its toxicity to plant root growth, are unclear. Selenium (Se) can detoxify Sb, but its associated detoxification mechanisms have not been fully clarified. The aim of the present study was to investigate the effects of Sb alone, or accompanying with Se, on the root growth, antioxidative systems and the uptake...

article

The effect of selenium on the subcellular distribution of antimony to regulate the toxicity of antimony in paddy rice

Yongzhen Ding, Ruigang Wang, Junkang Guo, Fengchang Wu, more

Environmental Science and Pollution Research > 2015 > 22 > 7 > 5111-5123

Selenium (Se) can alleviate the toxicity of antimony (Sb) in plants; however, the associated mechanisms have not been fully clarified. In this study, we hypothesize that Se can affect the subcellular distribution of Sb to regulate Sb toxicity. To test our hypothesis, two nested hydroponic experiments were performed by using paddy rice (Fengmeizhan). The results showed that Sb exerted toxic effects...

article

Speciation of antimony and arsenic in the soils and plants in an old antimony mine

Chaoyang Wei, Zhaofeng Ge, Wangsheng Chu, Renwei Feng

Environmental and Experimental Botany > 2015 > 109 > Complete > 31-39

The speciation changes of antimony (Sb) in soil–plant system are largely unknown as compared with those of arsenic (As). In this study, indigenous plants and associated soils were sampled at the Xikuangshan Sb mine (XKS), China. The Sb in the soils (441–1472mg/kg) were far greater than As (32–354mg/kg), and the Sb and As availabilities in the soils, were 5.5% and 3.9% in average, respectively. HPLC-ICP-MS...

article

Applying carbon dioxide, plant growth-promoting rhizobacterium and EDTA can enhance the phytoremediation efficiency of ryegrass in a soil polluted with zinc, arsenic, cadmium and lead

Junkang Guo, Renwei Feng, Yongzhen Ding, Ruigang Wang

Journal of Environmental Management > 2014 > 141 > Complete > 1-8

This study was conducted to investigate the use of elevated carbon dioxide (CO ₂ ), plant growth-promoting rhizobacterium Burkholderia sp. D54 (PGPR) and ethylenediaminetetraacetic acid (EDTA) to enhance the phytoextraction efficiency of ryegrass in response to multiple heavy metal (or metalloid)-polluted soil containing zinc (Zn), arsenic (As), cadmium (Cd) and lead (Pb). All of the single...

article

Elevated Atmospheric CO₂ Enhances Copper Uptake in Crops and Pasture Species Grown in Copper‐Contaminated Soils in a Micro‐Plot Study

Shuai Tian, Yan Jia, Yongzhen Ding, Ruigang Wang, more

CLEAN – Soil, Air, Water > 42 > 3 > 347 - 354

The biomass of plants for the purpose of phytoremediation is often small. Carbon dioxide (CO₂) can enhance plant biomass and so, it is reasonable to draw such an assumption that CO₂ can be used to help plants to phytoremediate heavy metal contaminated soils through enhancing the biomass of remediating plants. To identify this assumption, a micro‐plot study in six separate growth chambers was conducted...

article

Evolution modes of interbedded weathering crust karst: A case study of the 1st and 2nd members of Ordovician Yingshan Formation in EPCC block, Tazhong, Tarim Basin

Renwei FENG, Cheng OUYANG, Yanjun PANG, Zhuzheng LI, more

Petroleum Exploration and Development Online > 2014 > 41 > 1 > 49-59

The evolution of interbedded weathering crust karst on the top of the Ordovician Yingshan Formation were described based on the geological background, oil and gas show while drilling, core, log imaging and seismic reflection features in the Tazhong area. The study shows that: Filling features of dissolved caves near unconformities depend on the hydrodynamic strength, which, together with the vertical...

article

A dual effect of Se on Cd toxicity: evidence from plant growth, root morphology and responses of the antioxidative systems of paddy rice

Yongzhen Ding, Renwei Feng, Ruigang Wang, Junkang Guo, more

Plant and Soil > 2014 > 375 > 1-2 > 289-301

Aims It is well established that low levels of selenium (Se) are protective against low levels of cadmium (Cd) toxicity and can significantly reduce Cd uptake in plants. However, our previous study reported that the addition of Se hampered the growth of paddy rice exposed to high levels of Cd and enhanced Cd uptake. The relevant mechanisms underlying the dual effects of Se on Cd uptake and toxicity...

article

The uptake and detoxification of antimony by plants: A review

Renwei Feng, Chaoyang Wei, Shuxin Tu, Yongzhen Ding, more

Environmental and Experimental Botany > 2013 > 96 > Complete > 28-34

Many crops cultivated in mining areas have been found to accumulate high levels of antimony (Sb) in their edible parts, thereby causing potential risks to human health. Understanding the behaviours of Sb in plants is important, particularly the mechanisms involved in its uptake, toxicity, detoxification and accumulation in crops. Many factors affect the uptake of Sb in plants, including water management,...

article

Field evaluation of in situ remediation of Cd-contaminated soil using four additives, two foliar fertilisers and two varieties of pakchoi

Renwei Feng, Weiwen Qiu, Fei Lian, Zhihong Yu, more

Journal of Environmental Management > 2013 > 124 > Complete > 17-24

This study was conducted to determine the optimal planting mode for pakchoi (Brassica rapa chinensis) in Cd-contaminated soil to reduce the accumulation of Cd in the edible parts while maintaining yields. Four additives (red mud (RM), silicon calcium fertiliser (SC), spodium (SP) and calcium magnesium phosphate (CMP)), two foliar fertilisers (Ca and Zn) and two varieties of pakchoi (Aijiaohuang (AJ)...

article

The roles of selenium in protecting plants against abiotic stresses

Renwei Feng, Chaoyang Wei, Shuxin Tu

Environmental and Experimental Botany > 2013 > 87 > Complete > 58-68

Selenium (Se), an essential element for animals and humans, has also been found to be beneficial to plants. In some countries around the world, such as China and Egypt, Se deficiency in the diet is a common problem. To counteract this problem, Se compounds have been used to increase the Se content in the edible parts of crops, through foliar sprays or base application of fertilizers. Se has also been...

article

Interactive effects of selenium and antimony on the uptake of selenium, antimony and essential elements in paddy-rice

Renwei Feng, Chaoyang Wei, Shuxin Tu, Zhongqi Liu

Plant and Soil > 2013 > 365 > 1-2 > 375-386

Aims Selenium (Se) can be used to detoxify antimony (Sb); however, the associated mechanisms are not fully understood, in particular, the responses of essential elements to co-exposure to Se and Sb. Methods To resolve the above question, two nested hydroponic experiments based on a two-factor, five-level central composite design, were performed using a conventional indica rice (Fengmeizhan). Results...

article

A Dual Role of Se on Cd Toxicity: Evidences from the Uptake of Cd and Some Essential Elements and the Growth Responses in Paddy Rice

Renwei Feng, Chaoyang Wei, Shuxin Tu, Yongzhen Ding, more

Biological Trace Element Research > 2013 > 151 > 1 > 113-121

This study was carried out to investigate the effects of selenium (Se) on the uptake and translocation of cadmium (Cd) and essential elements in paddy rice (Oryza sativa L., Shuangyou 998). Selenium could alleviate/aggravate Cd toxicity in paddy rice, which depended on the dosages of Se and/or Cd. When Cd treatment level was as low as 35.6 μM, ≤12.7 μM Se could inhibit the uptake of Cd in paddy rice...

article

Simultaneous hyperaccumulation of arsenic and antimony in Cretan brake fern: Evidence of plant uptake and subcellular distributions

Renwei Feng, Chaoyang Wei, Shuxin Tu, Shirong Tang, more

Microchemical Journal > 2011 > 97 > 1 > 38-43

Arsenic (As) and antimony (Sb) show similar chemical properties and often present together in sulfide ores. Currently, phenomenon of co-contamination of As and Sb at some sites of the world has been increasingly emerged. The present study was conducted to explore the potential of Pteris cretica L. (Cretan brake fern), an arsenic (As) hyperaccumulator, to simultaneously accumulate As and Sb under hydroponic...

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Search results for: Renwei Feng

Effects of foliar dressing of selenite and silicate alone or combined with different soil ameliorants on the accumulation of As and Cd and antioxidant system in Brassica campestris

Ionomic and transcriptomic analysis provides new insight into the distribution and transport of cadmium and arsenic in rice

Root application of selenite can simultaneously reduce arsenic and cadmium accumulation and maintain grain yields, but show negative effects on the grain quality of paddy rice

Interactions between selenite and different forms of antimony and their effects on root morphology of paddy rice

Effects of Double Harvesting on Heavy Metal Uptake by Six Forage Species and the Potential for Phytoextraction in Field

Efficiency evaluation for remediating paddy soil contaminated with cadmium and arsenic using water management, variety screening and foliage dressing technologies

Evaluation of silkworm excrement and mushroom dreg for the remediation of multiple heavy metal/metalloid contaminated soil using pakchoi

Responses of root growth and antioxidative systems of paddy rice exposed to antimony and selenium

The effect of selenium on the subcellular distribution of antimony to regulate the toxicity of antimony in paddy rice

Speciation of antimony and arsenic in the soils and plants in an old antimony mine

Applying carbon dioxide, plant growth-promoting rhizobacterium and EDTA can enhance the phytoremediation efficiency of ryegrass in a soil polluted with zinc, arsenic, cadmium and lead

Elevated Atmospheric CO₂ Enhances Copper Uptake in Crops and Pasture Species Grown in Copper‐Contaminated Soils in a Micro‐Plot Study

Evolution modes of interbedded weathering crust karst: A case study of the 1st and 2nd members of Ordovician Yingshan Formation in EPCC block, Tazhong, Tarim Basin

A dual effect of Se on Cd toxicity: evidence from plant growth, root morphology and responses of the antioxidative systems of paddy rice

The uptake and detoxification of antimony by plants: A review

Field evaluation of in situ remediation of Cd-contaminated soil using four additives, two foliar fertilisers and two varieties of pakchoi

The roles of selenium in protecting plants against abiotic stresses

Interactive effects of selenium and antimony on the uptake of selenium, antimony and essential elements in paddy-rice

A Dual Role of Se on Cd Toxicity: Evidences from the Uptake of Cd and Some Essential Elements and the Growth Responses in Paddy Rice

Simultaneous hyperaccumulation of arsenic and antimony in Cretan brake fern: Evidence of plant uptake and subcellular distributions

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