The Experts below are selected from a list of 463161 Experts worldwide ranked by ideXlab platform
Qiang Zhao - One of the best experts on this subject based on the ideXlab platform.
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phosphorescent Heavy Metal complexes for bioimaging
Chemical Society Reviews, 2011Co-Authors: Qiang Zhao, Chunhui Huang, Fuyou LiAbstract:The application of phosphorescent Heavy-Metal complexes with d6, d8 and d10 electron configurations for bioimaging is a new and promising research field and has been attracting increasing interest. In this critical review, we systematically evaluate the advantages of phosphorescent Heavy-Metal complexes as bioimaging probes, including their photophysical properties, cytotoxicity and cellular uptake mechanisms. The progress of research into the use of phosphorescent Heavy-Metal complexes for staining different compartments of cells, monitoring intracellular functional species, providing targeted bioimaging, two-photon bioimaging, small-animal bioimaging, multimodal bioimaging and time-resolved bioimaging is summarized. In addition, several possible future directions in this field are also discussed (133 references).
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phosphorescent chemosensors based on Heavy Metal complexes
Chemical Society Reviews, 2010Co-Authors: Fuyou Li, Qiang Zhao, Chunhui HuangAbstract:Recently, the use of phosphorescent Heavy-Metal complexes as chemosensors has attracted increasing interest due to their advantageous photophysical properties. This critical review focuses on the design principles and the recent development of phosphorescent chemosensors for Metal cations, anions, pH, oxygen, volatile organic compounds and biomolecules based on some Heavy-Metal complexes (such as Pt(II)-, Ru(II)-, Re(I)-, Ir(III)-, Cu(I)-, Au(I)- and Os(II)-based complexes), in which the variation in phosphorescence signals induced by the interaction between Heavy-Metal complexes and analytes is utilized (217 references).
Sheo Mohan Prasad - One of the best experts on this subject based on the ideXlab platform.
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Heavy Metal tolerance in plants role of transcriptomics proteomics metabolomics and ionomics
Frontiers in Plant Science, 2016Co-Authors: Samiksha Singh, Parul Parihar, Rachana Singh, Vijay Pratap Singh, Sheo Mohan PrasadAbstract:Heavy Metal contamination of soil and water causing toxicity/stress has become one important constraint to crop productivity and quality. This situation has further worsened by the increasing population growth and inherent food demand. It have been reported in several studies that counterbalancing toxicity, due to Heavy Metal requires complex mechanisms at molecular, biochemical, physiological, cellular, tissue and whole plant level, which might manifest in terms of improved crop productivity. Recent advances in various disciplines of biological sciences such as metabolomics, transcriptomics, proteomics etc. have assisted in the characterization of metabolites, transcription factors, stress-inducible proteins involved in Heavy Metal tolerance, which in turn can be utilized for generating Heavy Metal tolerant crops. This review summarizes various tolerance strategies of plants under Heavy Metal toxicity, covering the role of metabolites (metabolomics), trace elements (ionomics), transcription factors (transcriptomics), various stress-inducible proteins (proteomics) as well as the role of plant hormones. We also provide a glance at strategies adopted by Metal accumulating plants also known as “Metallophytes”.
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Reduction of Heavy Metal load in food chain: technology assessment
Reviews in Environmental Science and Bio Technology, 2011Co-Authors: Anita Singh, Sheo Mohan PrasadAbstract:Industrialization and urbanization activities lead to extensive environmental problems and one of the most challenging problems is Heavy Metal contamination. Heavy Metal is responsible for causing adverse effect on human health through food chain contamination. To minimize the effect, different methods are being used for decreasing Heavy Metal load into the food chain. Most of the traditional methods are either extremely costly or it simply isolate the contaminated site. A promising, relatively new technology for removal of Heavy Metal from contaminated sites is phytoremediation. There are numerous crops such as sunflower ( Helianthus annus ), maize ( Zea mays ), mustard ( Brassica compestris ), barley ( Hordeum vulgare ), beet ( Beta vulgaris ), bitter Gourd ( Momordica charantia ), brinjal ( Solanum melongena ), cauliflower ( Brassica oleracea var. botrytis ), chilli ( Capsicum annum ), coriander ( Coriandrum sativum ), fenugreek ( Trigonella foenum - graecum ), garlic ( Alium sativum ), ivy gourd ( Coccinia indica ), lufa ( Luffa acutangula ), lady’s finger ( Abelmoschus esculentus ), mint ( Mentha piperata ), radish ( Raphanus sativus ), spinach ( Spinacia oleracea ), tomato ( Lycopersicom esculentum ), and white gourd ( Lagenaria vulgaris ) used for remediation of Heavy Metal. The efficiency of the phytoremediation crops depends upon their biomass production and ability of Metal accumulation in their harvestable organs. In addition to this there are some biotechnological approaches for enhancing the property of hyper accumulator plant for Metal remediation. Various potential remediation techniques are available that can be used to reduce the Heavy Metal contamination. Research related to relatively new technology should be promoted and emphasized and expanded in developing countries where Heavy Metal pollution has already touched alarming level. In the above context present review deals with different approaches to reduce the availability of Heavy Metal from soil to plants.
C. Watson - One of the best experts on this subject based on the ideXlab platform.
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phytoremediation of Heavy Metal contaminated land by trees a review
Environment International, 2003Co-Authors: Ian D. Pulford, C. WatsonAbstract:This paper reviews the potential for using trees for the phytoremediation of Heavy Metal-contaminated land. It considers the following aspects: Metal tolerance in trees, Heavy Metal uptake by trees grown on contaminated substrates, Heavy Metal compartmentalisation within trees, phytoremediation using trees and the phytoremediation potential of willow (Salix spp.).
Dietrich H. Nies - One of the best experts on this subject based on the ideXlab platform.
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efflux mediated Heavy Metal resistance in prokaryotes
Fems Microbiology Reviews, 2003Co-Authors: Dietrich H. NiesAbstract:What makes a Heavy Metal resistant bacterium Heavy Metal resistant? The mechanisms of action, physiological functions, and distribution of Metal-exporting proteins are outlined, namely: CBA efflux pumps driven by proteins of the resistance–nodulation–cell division superfamily, P-type ATPases, cation diffusion facilitator and chromate proteins, NreB- and CnrT-like resistance factors. The complement of efflux systems of 63 sequenced prokaryotes was compared with that of the Heavy Metal resistant bacterium Ralstonia Metallidurans. This comparison shows that Heavy Metal resistance is the result of multiple layers of resistance systems with overlapping substrate specificities, but unique functions. Some of these systems are widespread and serve in the basic defense of the cell against superfluous Heavy Metals, but some are highly specialized and occur only in a few bacteria. Possession of the latter systems makes a bacterium Heavy Metal resistant.
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Microbial Heavy-Metal resistance
Applied Microbiology and Biotechnology, 1999Co-Authors: Dietrich H. NiesAbstract:We are just beginning to understand the metabolism of Heavy Metals and to use their metabolic functions in biotechnology, although Heavy Metals comprise the major part of the elements in the periodic table. Because they can form complex compounds, some Heavy Metal ions are essential trace elements, but, essential or not, most Heavy Metals are toxic at higher concentrations. This review describes the workings of known Metal-resistance systems in microorganisms. After an account of the basic principles of homoeostasis for all Heavy-Metal ions, the transport of the 17 most important (Heavy Metal) elements is compared.
Chunhui Huang - One of the best experts on this subject based on the ideXlab platform.
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phosphorescent Heavy Metal complexes for bioimaging
Chemical Society Reviews, 2011Co-Authors: Qiang Zhao, Chunhui Huang, Fuyou LiAbstract:The application of phosphorescent Heavy-Metal complexes with d6, d8 and d10 electron configurations for bioimaging is a new and promising research field and has been attracting increasing interest. In this critical review, we systematically evaluate the advantages of phosphorescent Heavy-Metal complexes as bioimaging probes, including their photophysical properties, cytotoxicity and cellular uptake mechanisms. The progress of research into the use of phosphorescent Heavy-Metal complexes for staining different compartments of cells, monitoring intracellular functional species, providing targeted bioimaging, two-photon bioimaging, small-animal bioimaging, multimodal bioimaging and time-resolved bioimaging is summarized. In addition, several possible future directions in this field are also discussed (133 references).
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phosphorescent chemosensors based on Heavy Metal complexes
Chemical Society Reviews, 2010Co-Authors: Fuyou Li, Qiang Zhao, Chunhui HuangAbstract:Recently, the use of phosphorescent Heavy-Metal complexes as chemosensors has attracted increasing interest due to their advantageous photophysical properties. This critical review focuses on the design principles and the recent development of phosphorescent chemosensors for Metal cations, anions, pH, oxygen, volatile organic compounds and biomolecules based on some Heavy-Metal complexes (such as Pt(II)-, Ru(II)-, Re(I)-, Ir(III)-, Cu(I)-, Au(I)- and Os(II)-based complexes), in which the variation in phosphorescence signals induced by the interaction between Heavy-Metal complexes and analytes is utilized (217 references).
