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https://www.readbyqxmd.com/read/27882491/influence-of-phosphorous-fertilization-on-copper-phytoextraction-and-antioxidant-defenses-in-castor-bean-ricinus-communis-l
#1
Guoyong Huang, Muhammad Shahid Rizwan, Chao Ren, Guangguang Guo, Qingling Fu, Jun Zhu, Hongqing Hu
Application of fertilizers to supply appropriate nutrients has become an essential agricultural strategy for enhancing the efficiency of phytoremediation in heavy metal contaminated soils. The present study was conducted to investigate the beneficial effects of three types of phosphate fertilizers (i.e., oxalic acid-activated phosphate rock (APR), Ca(H2PO4)2, and NaH2PO4) in the range of 0-600 mg P kg(-1) soil, on castor bean growth, antioxidants [antioxidative enzymes and glutathione (GSH)], and Cu uptake...
November 23, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27869502/influence-of-endophytic-bacillus-pumilus-and-edta-on-the-phytoextraction-of-cu-from-soil-by-using-cicer-arietinum
#2
Barkat Ali, Amna, Muhammad Tariq Javed, Hazrat Ali, Muhammad Farooq Hussain Munis, Hassan Javed Chaudhary
In developing countries, soil contamination with metals is ubiquitous, which poses a serious threat to the ecosystem. The current study was designed to screen out the nested belongings of Cicer arietinum plants and Bacillus pumilus (KF 875447) in extracting copper (Cu) from contaminated soils. A pot experiment was executed by growing C. arietinum seedlings either inoculated with B. pumilus or uninoculated along with the application of 5 mM ethylenediaminetetraacetic acid (EDTA). Plants were subjected to three different concentrations of Cu (250, 350, and 500 ppm) for 48 days...
January 2, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27866363/comparative-of-quercus-spp-and-salix-spp-for-phytoremediation-of-pb-zn-mine-tailings
#3
Xiang Shi, Shufeng Wang, Haijing Sun, Yitai Chen, Dongxue Wang, Hongwei Pan, Yazhu Zou, Jianfeng Liu, Linyu Zheng, Xiulian Zhao, Zeping Jiang
A pot experiment was conducted to evaluate the feasibility of using tree seedlings for the phytoremediation of lead/zinc (Pb/Zn) mine tailings. Seedlings of three Quercus spp. (Q. shumardii, Q. phellos, and Q. virginiana) and rooted cuttings of two Salix spp. (S. matsudana and S. integra) were transplanted into pots containing 50 and 100 % Pb/Zn mine tailings to evaluate their tolerance of heavy metals. The five species showed different tolerance levels to the Pb/Zn tailings treatments. Q. virginiana was highly tolerant to heavy metals and grew normally in the Pb/Zn tailings...
November 19, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27864737/significance-of-diazotrophic-plant-growth-promoting-herbaspirillum-sp-gw103-on-phytoextraction-of-pband-zn-by-zea-mays-l
#4
Loganathan Praburaman, Sung-Hee Park, Min Cho, Kui-Jae Lee, Jeong-Ae Ko, Sang-Sub Han, Sang-Hyun Lee, Seralathan Kamala-Kannan, Byung-Taek Oh
Microbe-assisted phytoremediation has been considered a promising measure for the remediation of heavy metal-polluted soil. The aim of this study was to assess the effect of diazotrophic plant growth-promoting Herbaspirillum sp. GW103 on growth and lead (Pb) and zinc (Zn) accumulation in Zea mays L. The strain GW103 exhibited plant growth-promoting traits such as indole-3-acetic acid, siderophores, and 1-aminocyclopropane-1-carboxylic deaminase. Treatment of Z. mays L. plants with GW103 significantly increased 19, 31, and 52% of plant biomass and 10, 50, and 126% of chlorophyll a contents in Pb, Zn, and Pb + Zn-amended soils, respectively...
November 18, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27854061/metal-resistant-rhizobacteria-isolates-improve-mucuna-deeringiana-phytoextraction-capacity-in-multi-metal-contaminated-soils-from-a-gold-mining-area
#5
Cácio Luiz Boechat, Patricia Giovanella, Magno Batista Amorim, Enilson Luiz Saccol de Sá, Flávio Anastácio de Oliveira Camargo
Phytoremediation consists of biological techniques for heavy metal remediation, which include exploring the genetic package of vegetable species to remove heavy metals from the environment. The goals of this study were to investigate heavy metal and bioaugmentation effects on growth and nutrient uptake by Mucuna deeringiana; to determine the metal translocation factor and bioconcentration factor and provide insight for using native bacteria to enhance heavy metal accumulation. The experiment was conducted under greenhouse conditions using a 2 × 4 factorial scheme with highly and slightly contaminated soil samples and inoculating M...
November 16, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27854046/fluoride-exposure-aggravates-the-testicular-damage-and-sperm-quality-in-diabetic-mice-protective-role-of-ginseng-and-banaba
#6
Saumya Sm, P Mahaboob Basha
Fluoride toxicity is known to pose infertility in fluoride-intoxicated animals as well as in people residing in fluoride endemic zones. The present study addresses the degree of impairments caused due to co-exposure of high fluoride toxicity in diabetic mice. Swiss mice, Mus musculus, were subjected to fluoride toxicity by providing fluoride-supplemented drinking water (600 ppm NaF) for a period of 30 days after the confirmation of streptozotocin-induced diabetes(STZ, 50 mg/kgbw). Consequently, aggravated hyperglycemia and tissue fluoride accumulation were witnessed in fluoride-intoxicated diabetic mice; later, these toxicated mice were treated with ginseng extract (GE) and banaba leaf extract, (BLE) at dose of 150 mg/kgbw/day alone and in combination for 15 and 30-day duration to check the efficacy of phytoextracts in reversing the toxicity...
November 16, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27826829/phytoextraction-of-heavy-metals-by-potential-native-plants-and-their-microscopic-observation-of-root-growing-on-stabilised-distillery-sludge-as-a-prospective-tool-for-in-situ-phytoremediation-of-industrial-waste
#7
Ram Chandra, Vineet Kumar
The safe disposal of post-methanated distillery sludge (PMDS) in the environment is challenging due to high concentrations of heavy metals along with other complex organic pollutants. The study has revealed that PMDS contained high amounts of Fe (2403), Zn (210), Mn (126), Cu (73.62), Cr (21.825), Pb (16.33) and Ni (13.425 mg kg(-1)) along with melanoidins and other co-pollutants. The phytoextraction pattern in 15 potential native plants growing on sludge showed that the Blumea lacera, Parthenium hysterophorous, Setaria viridis, Chenopodium album, Cannabis sativa, Basella alba, Tricosanthes dioica, Amaranthus spinosus L...
November 8, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27819494/impact-of-chelators-induced-phytoextraction-of-cadmium-on-yield-and-ionic-uptake-of-maize
#8
Sumera Anwar, Shahbaz Khan, M Yasin Ashraf, Sana Ullah Baloch, Sara Zafar, Ali Noman
Enhanced phytoextraction uses soil chelators to increase the bioavailability of heavy metals. This study tested the effectiveness of ethylenediaminetetraaceticacid (EDTA) and citric acid in enhancing cadmium (Cd) phytoextraction, and their effects on the growth, yield, and ionic uptake of maize (Zea mays). Maize seeds of two cultivars were sown in pots treated with 15 (Cd15) or 30 mg Cd kg(-1) soil (Cd30). EDTA and citric acid at 0.5 g kg(-1) each were applied 2 weeks after germination. Results demonstrated that the growth, yield per plant, and total grain weight was reduced by exposure to Cd...
November 7, 2016: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27819493/effect-of-pseudomonas-fluorescens-rb4-and-bacillus-subtilis-189-on-the-phytoremediation-potential-of-catharanthus-roseus-l-in-cu-and-pb-contaminated-soils
#9
Waheed Ullah Khan, Sajid Rashid Ahmad, Nasim Ahmad Yasin, Aamir Ali, Aqeel Ahmad
The remediation of heavy metal contaminated soils has become a critical issue due to toxic effects of these metals on living organisms. The current research was conducted to study the effect of Pseudomonas fluorescens RB4 and Bacillus subtilis 189 on the growth and phytoremediation potential of Catharanthus roseus in Cu and Pb contaminated soils. The bacterial strains exhibited significantly higher level of water extractable Pb and Cu in Pb, Cu and both elements contaminated soils. The P. fluorescens RB4 inoculated plants, produced 102%, 48% and 45% higher fresh weight (FW) in soils contaminated with Cu, Pb and both elements respectively, as compared to un-inoculated control plants...
November 7, 2016: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27805014/microbial-community-dynamics-in-the-rhizosphere-of-a-cadmium-hyper-accumulator
#10
J L Wood, C Zhang, E R Mathews, C Tang, A E Franks
Phytoextraction is influenced by the indigenous soil microbial communities during the remediation of heavy metal contaminated soils. Soil microbial communities can affect plant growth, metal availability and the performance of phytoextraction-assisting inocula. Understanding the basic ecology of indigenous soil communities associated with the phytoextraction process, including the interplay between selective pressures upon the communities, is an important step towards phytoextraction optimization. This study investigated the impact of cadmium (Cd), and the presence of a Cd-accumulating plant, Carpobrotus rossii (Haw...
November 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27796994/leaching-characteristics-of-edta-enhanced-phytoextraction-of-cd-and-pb-by-zea-mays-l-in-different-particle-size-fractions-of-soil-aggregates-exposed-to-artificial-rain
#11
Yayin Lu, Dinggui Luo, An Lai, Guowei Liu, Lirong Liu, Jianyou Long, Hongguo Zhang, Yongheng Chen
Chelator-assisted phytoextraction is an alternative and effective technique for the remediation of heavy metal-contaminated soils, but the potential for heavy metal leaching needs to be assessed. In the present study, a soil column cultivation-leaching experiment was conducted to investigate the Cd and Pb leaching characteristics during assisted phytoextraction of metal-contaminated soils containing different particle-size soil aggregates. The columns were planted with Zea mays "Zhengdan 958" seedlings and treated with combined applications of EDTA and simulated rainfall (pH 4...
October 30, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27794498/phytomedicine-modulating-oxidative-stress-and-the-tumor-microenvironment-for-cancer-therapy
#12
REVIEW
Yu-Ting Cheng, Chun-Chih Yang, Lie-Fen Shyur
In spite of the current advances and achievements in systems biology and translational medicinal research, the current strategies for cancer therapy, such as radiotherapy, targeted therapy, immunotherapy and chemotherapy remain palliative or unsatisfactory due to tumor metastasis or recurrence after surgery/therapy, drug resistance, adverse side effects, and so on. Oxidative stress (OS) plays a critical role in chronic/acute inflammation, carcinogenesis, tumor progression, and tumor invasion/metastasis which is also attributed to the dynamic and complex properties and activities in the tumor microenvironment (TME)...
October 26, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27778270/copper-phytoextraction-by-salvinia-cucullata-biochemical-and-morphological-study
#13
Suchismita Das, Sunayana Goswami
The present study investigated the effect of copper on photosynthesis, antioxidant potential, and anatomical response of aquatic fern, Salvinia cucullata, with a view to ascertain its phytoremediation potential. Plants were exposed in hydroponics for 21 days to different Cu concentrations (10, 15, 20, and 30 mg/L). Significant declines in chlorophyll, carotenoids, and soluble proteins, as a function of Cu proportion were observed. Lipid peroxidation was also evident, which implied reactive oxygen species (ROS) generation...
October 24, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27770586/assessing-the-role-of-endophytic-bacteria-in-the-halophyte-arthrocnemum-macrostachyum-salt-tolerance
#14
S Navarro-Torre, J M Barcia-Piedras, E Mateos-Naranjo, S Redondo-Gómez, M Camacho, M A Caviedes, E Pajuelo, I D Rodríguez-Llorente
There is an increasing interest to use halophytes for revegetation of salt affected ecosystems, as well as in understanding their mechanisms of salt tolerance. We hypothesized that bacteria from the phyllosphere of these plants might play a key role in its high tolerance to excessive salinity. Eight endophytic bacteria belonging to Bacillus and closely related genera were isolated from phyllosphere of the halophyte Arthrocnemum macrostachyum growing in salty agricultural soils. The presence of plant-growth promoting (PGP) properties, enzymatic activities and tolerance towards NaCl was determined...
October 22, 2016: Plant Biology
https://www.readbyqxmd.com/read/27749263/phytoremediation-potential-of-wild-plants-growing-on-soil-contaminated-with-heavy-metals
#15
Vladica Čudić, Dragoslava Stojiljković, Aleksandar Jovović
Phytoremediation is an emerging technology that employs higher plants to cleanup contaminated environments, including metal-polluted soils. Because it produces a biomass rich in extracted toxic metals, further treatment of this biomass is necessary. The aim of our study was to assess the five-year potential of the following native wild plants to produce biomass and remove heavy metals from a polluted site: poplar (Populus ssp.), ailanthus (Ailanthus glandulosa L.), false acacia (Robinia pseudoacacia L.), ragweed (Artemisia artemisiifolia L...
September 1, 2016: Arhiv za Higijenu Rada i Toksikologiju
https://www.readbyqxmd.com/read/27746807/screening-and-evaluation-of-the-bioremediation-potential-of-cu-zn-resistant-autochthonous-acinetobacter-sp-fq-44-from-sonchus-oleraceus-l
#16
Qing Fang, Zhengqiu Fan, Yujing Xie, Xiangrong Wang, Kun Li, Yafeng Liu
The quest for new, promising and indigenous plant growth-promoting rhizobacteria and a deeper understanding of their relationship with plants are important considerations in the improvement of phytoremediation. This study focuses on the screening of plant beneficial Cu/Zn-resistant strains and assessment of their bioremediation potential (metal solubilization/tolerance/biosorption and effects on growth of Brassica napus seedlings) to identify suitable rhizobacteria and examine their roles in microbes-assisted phytoremediation...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27739906/cs-phytoremediation-by-sorghum-bicolor-cultivated-in-soil-and-in-hydroponic-system
#17
Xu Wang, Can Chen, Jianlong Wang
Cs accumulation characteristics by S. bicolor were investigated in hydroponic system (Cs level at 50∼1000 μmol/L) and in soil (Cs-spiked concentration was 100 and 400 mg/kg soil). Two varieties of S. bicolor Cowly and Nengsi 2# grown on pot soil during the entire growth period (100 days) did not show significant differences on the height, dry weight (DW) and Cs accumulation. S. bicolor showed the potential phytoextraction ability for Cs-contaminated soil with the bioaccumulation factor (BCF) and the translocation factor (TF) values usually higher than 1 in soil system and in hydroponic system...
October 14, 2016: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27739900/the-effect-of-plant-growth-promoting-rhizobacteria-on-the-phytoextraction-of-cd-and-zn-by-brassica-napus-l
#18
G Dąbrowska, K Hrynkiewicz, A Trejgell, C Baum
The test strains Bacteroidetes bacterium (Ba), Pseudomonas fluorescens (Pf) and Variovorax sp. (Va) were selected in advance for their in vitro capability for growth promotion of rapeseed in the presence of increased concentrations of Cd, Cu, Pb and Zn in the medium. In the pot experiment the strains were used for single Ba, Pf, Va or combined Ba+Pf, Ba+Va, Pf+Va, Ba+Pf+Va inoculation of B. napus growing in contaminated soil from alluvial deposits. The positive effect of bacterial strains on plant growth was observed in vitro, but was not confirmed in situ in the contaminated soil, where the tested strains inhibited biomass production, rather than stimulating it...
October 14, 2016: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27739899/brassica-juncea-tested-on-urban-soils-moderately-contaminated-by-lead-origin-of-contamination-and-effect-of-chelates
#19
Dorine Bouquet, Armelle Braud, Thierry Lebeau
Urban garden soils are a potential repository of heavy metal pollution, resulting from either anthropogenic or geogenic origin. The efficiency of phytoextraction was compared on two garden soils with the same texture and topsoil Pb concentration (170 mg kg(-1)) but not the same origin: one geogenic, the other anthropogenic. Two varieties of Brassica juncea were tested with citric acid (25 mmol kg(-1)) or Ethylene Diamine Tetraacetic Acid (EDTA, 2.5 mmol kg(-1)). Geogenic Pb was shown to be two times less available than anthropogenic Pb, with as a result the phytoextraction efficiency being reduced by 59%...
October 14, 2016: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27739883/effects-of-pisolithus-tinctorius-and-cenococcum-geophilum-inoculation-on-pine-in-copper-contaminated-soil-to-enhance-phytoremediation
#20
Zhugui Wen, Liang Shi, Yangze Tang, Zhenguo Shen, Yan Xia, Yahua Chen
We used Pisolithus tinctorius and Cenococcum geophilum to determine the copper (Cu) resistance of ectomycorrhizal (ECM) fungi and their potential for improving phytoremediation of Cu-contaminated soil by Chinese red pine (Pinus tabulaeformis). The results showed that nutrient accumulation in C. geophilum mycelium was significantly lower under higher Cu concentrations in the soil, which was not observed in P. tinctorius. Meanwhile, P. tinctorius exhibited greater Cu tolerance than C. geophilum. Inoculation with ECM fungi significantly improved the growth of pine shoots planted in polluted soil in pot experiments (p < 0...
October 14, 2016: International Journal of Phytoremediation
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