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Duan M, Li Y, Zhu G, Wu X, Huang H, Qin J, Long S, Li X, Feng B, Qin S, Liu QH, Li C, Wang L, Li Q, He T, Wang Z. Soil chemistry, metabarcoding, and metabolome analyses reveal that a sugarcane- Dictyophora indusiata intercropping system can enhance soil health by reducing soil nitrogen loss. Front Microbiol 2023; 14:1193990. [PMID: 37303785 PMCID: PMC10249477 DOI: 10.3389/fmicb.2023.1193990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 05/02/2023] [Indexed: 06/13/2023] Open
Abstract
Introduction Greater amounts of fertilizer are applied every year to meet the growing demand for food. Sugarcane is one of the important food sources for human beings. Methods Here, we evaluated the effects of a sugarcane-Dictyophora indusiata (DI) intercropping system on soil health by conducting an experiment with three different treatments: (1) bagasse application (BAS process), (2) bagasse + DI (DIS process), and (3) the control (CK). We then analyzed soil chemistry, the diversity of soil bacteria and fungi, and the composition of metabolites to clarify the mechanism underlying the effects of this intercropping system on soil properties. Results and discussion Soil chemistry analyses revealed that the content of several soil nutrients such as nitrogen (N) and phosphorus (P) was higher in the BAS process than in the CK. In the DIS process, a large amount of soil P was consumed by DI. At the same time, the urease activity was inhibited, thus slowing down the loss of soil in the DI process, while the activity of other enzymes such as β-glucosidase and laccase was increased. It was also noticed that the content of lanthanum and calcium was higher in the BAS process than in the other treatments, and DI did not significantly alter the concentrations of these soil metal ions. Bacterial diversity was higher in the BAS process than in the other treatments, and fungal diversity was lower in the DIS process than in the other treatments. The soil metabolome analysis revealed that the abundance of carbohydrate metabolites was significantly lower in the BAS process than in the CK and the DIS process. The abundance of D(+)-talose was correlated with the content of soil nutrients. Path analysis revealed that the content of soil nutrients in the DIS process was mainly affected by fungi, bacteria, the soil metabolome, and soil enzyme activity. Our findings indicate that the sugarcane-DIS intercropping system can enhance soil health.
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Affiliation(s)
- Mingzheng Duan
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Yijie Li
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Guanghu Zhu
- Center for Applied Mathematics of Guangxi (GUET), Guilin, China
| | - Xiaojian Wu
- Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Hairong Huang
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Jie Qin
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Shengfeng Long
- Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Xiang Li
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Bin Feng
- Laibin Academy of Agricultural Sciences, Laibin, China
| | - Sunqian Qin
- Laibin Academy of Agricultural Sciences, Laibin, China
| | - Qi-Huai Liu
- Center for Applied Mathematics of Guangxi (GUET), Guilin, China
| | - Changning Li
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Lingqiang Wang
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Qing Li
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Tieguang He
- Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Zeping Wang
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
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Nkole IU, Idris SO, Abdulkadir I, Onu AD. Cationic Surfactant-Based Catalysis on the Oxidation of Glutamic Acid by Bis-(2-pyridinealdoximato)dioxomolydate(IV) Complex. Catal Letters 2023. [DOI: 10.1007/s10562-022-04187-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Haftek M, Abdayem R, Guyonnet-Debersac P. Skin Minerals: Key Roles of Inorganic Elements in Skin Physiological Functions. Int J Mol Sci 2022; 23:ijms23116267. [PMID: 35682946 PMCID: PMC9181837 DOI: 10.3390/ijms23116267] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 05/31/2022] [Accepted: 06/01/2022] [Indexed: 02/04/2023] Open
Abstract
As odd as it may seem at first glance, minerals, it is what we are all about…or nearly. Although life on Earth is carbon-based, several other elements present in the planet’s crust are involved in and often indispensable for functioning of living organisms. Many ions are essential, and others show supportive and accessory qualities. They are operative in the skin, supporting specific processes related to the particular situation of this organ at the interface with the environment. Skin bioenergetics, redox balance, epidermal barrier function, and dermal remodeling are amongst crucial activities guided by or taking advantage of mineral elements. Skin regenerative processes and skin ageing can be positively impacted by adequate accessibility, distribution, and balance of inorganic ions.
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Affiliation(s)
- Marek Haftek
- CNRS Laboratory of Tissue Biology and Therapeutic Engineering (LBTI), UMR5305 CNRS–University of Lyon1, 69367 Lyon, France
- Correspondence:
| | - Rawad Abdayem
- L’Oréal Research and Innovation, 94550 Chevilly-Larue, France;
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Fuior A, Hijazi A, Garbuz O, Bulimaga V, Zosim L, Cebotari D, Haouas M, Toderaş I, Gulea A, Floquet S. Screening of biological properties of Mo V2O 2S 2- and Mo V2O 4-based coordination complexes: Investigation of antibacterial, antifungal, antioxidative and antitumoral activities versus growing of Spirulina platensis biomass. J Inorg Biochem 2021; 226:111627. [PMID: 34689079 DOI: 10.1016/j.jinorgbio.2021.111627] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 10/01/2021] [Accepted: 10/04/2021] [Indexed: 12/17/2022]
Abstract
This paper deals with the biological potential of coordination compounds based on binuclear core [MoV2O2E2]2+ (E = O or S) coordinated with commercially available ligands such as oxalates (Ox2-), L-cysteine (L-cys2-), L-histidine (L-his-), Iminodiacetate (IDA2-), Nitrilotriacetate (HNTA2- or NTA3-) or ethylenediamine tetraacetate (EDTA4-) by means of various in vitro assays in a screening approach. Results suggest that the obtained complexes show weak antibacterial and antifungal properties while not being cytotoxic on cancerous and mammalian cells. In contrast, [Mo2O2E2(L-cys)2]2- complexes stand out as powerful antioxidant, whereas [Mo2O2E2(EDTA)]2- associating tetraphenylphosphonium counter-cations display strong antibiotic activity. Finally, some complexes have evidenced a positive activity towards the growing of spirulina platensis together with a modification of the proportions of biological components inside the cells. These findings reveal promising bioactivity of the bridged binuclear Mo(+V) cores inside complexes and encourage further research for new highly active yet non-toxic molecules for biological and biomedical applications.
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Affiliation(s)
- Arcadie Fuior
- Institut Lavoisier de Versailles, CNRS UMR 8180, Univ. Versailles Saint Quentin en Yvelines, Université Paris-Saclay, 45 av. des Etats-Unis, 78035 Versailles, Cedex, France; State University of Moldova, 60 Alexei Mateevici str., MD-2009 Chisinau, Republic of Moldova
| | - Akram Hijazi
- Institut Lavoisier de Versailles, CNRS UMR 8180, Univ. Versailles Saint Quentin en Yvelines, Université Paris-Saclay, 45 av. des Etats-Unis, 78035 Versailles, Cedex, France
| | - Olga Garbuz
- State University of Moldova, 60 Alexei Mateevici str., MD-2009 Chisinau, Republic of Moldova
| | - Valentina Bulimaga
- State University of Moldova, 60 Alexei Mateevici str., MD-2009 Chisinau, Republic of Moldova
| | - Liliana Zosim
- State University of Moldova, 60 Alexei Mateevici str., MD-2009 Chisinau, Republic of Moldova
| | - Diana Cebotari
- Institut Lavoisier de Versailles, CNRS UMR 8180, Univ. Versailles Saint Quentin en Yvelines, Université Paris-Saclay, 45 av. des Etats-Unis, 78035 Versailles, Cedex, France; State University of Moldova, 60 Alexei Mateevici str., MD-2009 Chisinau, Republic of Moldova
| | - Mohamed Haouas
- Institut Lavoisier de Versailles, CNRS UMR 8180, Univ. Versailles Saint Quentin en Yvelines, Université Paris-Saclay, 45 av. des Etats-Unis, 78035 Versailles, Cedex, France
| | - Ion Toderaş
- Institute of Zoology, 1 Academiei str., MD-2028 Chisinau, Republic of Moldova
| | - Aurelian Gulea
- State University of Moldova, 60 Alexei Mateevici str., MD-2009 Chisinau, Republic of Moldova.
| | - Sébastien Floquet
- Institut Lavoisier de Versailles, CNRS UMR 8180, Univ. Versailles Saint Quentin en Yvelines, Université Paris-Saclay, 45 av. des Etats-Unis, 78035 Versailles, Cedex, France.
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Bai H, Yang F, Jiang W, Hu A, Chang H, Zhang Y, Jiang L, Lin S, Lu Z, Zhang C, Cao H. Molybdenum and cadmium co-induce mitophagy and mitochondrial dysfunction via ROS-mediated PINK1/Parkin pathway in Hepa1-6 cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 224:112618. [PMID: 34392151 DOI: 10.1016/j.ecoenv.2021.112618] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Excessive molybdenum (Mo) and Cadmium (Cd) can adversely affect health status. However, the correlation between mitophagy and mitochondrial dysfunction caused by Mo and Cd and the underlying mechanisms are still unknown. The aim of this study was to investigate the relationship between mitophagy and mitochondrial dysfunction via the ROS-mediated PINK1/Parkin pathway caused by Mo and Cd. Here, Hepa1-6 cells were incubated with (NH4)6Mo7O24.4 H2O (600.0 μM Mo), CdCl2 (10.0 μM Cd), and the combination of reactive oxygen species (ROS) scavenger (N-acetyl-L-cysteine, NAC, 100.0 μM), or mitophagy inhibitor (Cyclosporin A, CsA, 1.0 μM) for 24 h. Results revealed that Mo or/and Cd elevated the level of intracellular ROS and malondialdehyde (MDA) content, reduced superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) activities. Additionally, Mo or/and Cd could observably increase the percentage of cells with low membrane potential and decrease the content of ATP, elevate the number of autophagosomes and LC3 puncta, upregulate the mRNA and protein levels of LC3II/LC3I, Parkin, Pink1, VDAC1, downregulate mRNA and protein levels of P62. Moreover, treatments with NAC could significantly alleviate the changes of the above factors co-induced by Mo and Cd, and CsA intensify the changes of the above factors. In summary, our results reveal that Mo and Cd co-exposure can cause oxidative stress and mitophagy via the ROS-mediated PINK1/Parkin pathway in Hepa1-6 cells, and inhibition of mitophagy aggravates Mo and Cd co-induced mitochondrial dysfunction.
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Affiliation(s)
- He Bai
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China; Medical Research Center, Mudanjiang Medical University, No. 3 Tongxiang street, Aimin District, Mudanjiang 157011, Heilongjiang, PR China
| | - Fan Yang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Wenjuan Jiang
- Application and Extension Department of Animal Husbandry and Fishery Technology of Jiangxi Agricultural Technology Extension Center, No.2, East 2nd Road, Courtyard of Nanchang Municipal Government, East Lake District, Nanchang 330000, Jiangxi, PR China
| | - Aiming Hu
- Ji'an Animal Husbandry and Veterinary Bureau, No.4 Luzhou West Road, Jizhou District, Ji'an 343000, Jiangxi, PR China
| | - Huifeng Chang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Yiling Zhang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Lu Jiang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Shixuan Lin
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Zengting Lu
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Caiying Zhang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Huabin Cao
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China.
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Cunrath O, Palmer JD. An overview of Salmonella enterica metal homeostasis pathways during infection. ACTA ACUST UNITED AC 2021; 2:uqab001. [PMID: 34250489 PMCID: PMC8264917 DOI: 10.1093/femsml/uqab001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/19/2021] [Indexed: 12/14/2022]
Abstract
Nutritional immunity is a powerful strategy at the core of the battlefield between host survival and pathogen proliferation. A host can prevent pathogens from accessing biological metals such as Mg, Fe, Zn, Mn, Cu, Co or Ni, or actively intoxicate them with metal overload. While the importance of metal homeostasis for the enteric pathogen Salmonella enterica Typhimurium was demonstrated many decades ago, inconsistent results across various mouse models, diverse Salmonella genotypes, and differing infection routes challenge aspects of our understanding of this phenomenon. With expanding access to CRISPR-Cas9 for host genome manipulation, it is now pertinent to re-visit past results in the context of specific mouse models, identify gaps and incongruities in current knowledge landscape of Salmonella homeostasis, and recommend a straight path forward towards a more universal understanding of this historic host-microbe relationship.
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Affiliation(s)
- Olivier Cunrath
- Department of Zoology, University of Oxford, Zoology Research and Administration Building, 11a Mansfield Rd, Oxford, UK OX1 3SZ
| | - Jacob D Palmer
- Department of Zoology, University of Oxford, Zoology Research and Administration Building, 11a Mansfield Rd, Oxford, UK OX1 3SZ
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Wang X, Brunetti G, Tian W, Owens G, Qu Y, Jin C, Lombi E. Effect of soil amendments on molybdenum availability in mine affected agricultural soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 269:116132. [PMID: 33272794 DOI: 10.1016/j.envpol.2020.116132] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
Molybdenum (Mo) contamination of agricultural soils around Mo-mining areas is of emerging environmental concern. This study evaluated potential practical techniques for chemical immobilization of three Mo contaminated agricultural soils via application of up to six amendments from four different types of materials including biosolids, biochar supported nanoscale zero-valent iron (BC-nZVI), drinking water treatment residues (WTR) and ferrous minerals (magnetite and ferrihydrite). The efficacy of the different amendments on soil Mo bioaccessibility and bioavailability was evaluated by monitoring Mo uptake in both monocotyledon (ryegrass) and dicotyledon (alfalfa) plants, soil extractable Mo, and Mo bioavailability as measured by Diffusive Gradient in Thin Films (DGT®). All amendments exhibited no immobilization effect and increased Mo extractability in the severely contaminated soil (264 mg Mo kg-1). In contrast, in lightly and moderately contaminated soils (22 and 98 mg Mo kg-1), biosolids, WTR and magnetite all reduced soil extractable Mo and decreased Mo uptake in both alfalfa and ryegrass shoots relative to controls (CK). Moreover, DGT showed that during incubation experiments while biosolids amendments increased Mo bioavailability from 115 to 378% compared to the CK treatments, all other amendments decreased Mo bioavailability insignificantly.
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Affiliation(s)
- Xiaoqing Wang
- Luoyang Institute of Science and Technology, Luoyang, 471023, PR China; Henan Provincial Engineering Technology Center of Remediation and Prevention for Heavy Metal Pollution in Soil, Luoyang, 471023, PR China; Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia
| | - Gianluca Brunetti
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia.
| | - Wenjie Tian
- Luoyang Institute of Science and Technology, Luoyang, 471023, PR China; Henan Provincial Engineering Technology Center of Remediation and Prevention for Heavy Metal Pollution in Soil, Luoyang, 471023, PR China
| | - Gary Owens
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia
| | - Yang Qu
- Luoyang Institute of Science and Technology, Luoyang, 471023, PR China; Henan Provincial Engineering Technology Center of Remediation and Prevention for Heavy Metal Pollution in Soil, Luoyang, 471023, PR China
| | - Chaoxi Jin
- Luoyang Eco-Environmental Monitoring Center, Henan Province, Luoyang, 471021, PR China
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia
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Abstract
Determining mineral status of production animals is important when developing an optimum health program. Nutrition is the largest expense in food animal production and has the greatest impact on health and productivity of the animals. Knowing the bioavailability of minerals in the diet is difficult. Evaluating fluid or tissues from animals is the optimum method to determine bioavailability. Evaluating the diet provides some information. Serum/blood or liver from the animal needs to be analyzed to determine bioavailability of vitamin and minerals in the diet. This article reviews how to sample and the function of these minerals in cattle.
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Affiliation(s)
- Steve Ensley
- Anatomy & Physiology, Kansas State University, 1800 Dension Avenue, P217 Mosier Hall, Manhattan, KS 66506, USA.
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Sönmez F, Çığ A. Effects of Increased Vermicompost and Nitrogen-Phosphorus (NP) Applications on the Co, Ni, Cd, and Mo Contents of Hyacinth (Hyacinthus orientalis L. “Purple Star”). ULUSLARARASI TARIM VE YABAN HAYATI BILIMLERI DERGISI 2019. [DOI: 10.24180/ijaws.551290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Ali N, Hadi F. CBF/DREB transcription factor genes play role in cadmium tolerance and phytoaccumulation in Ricinus communis under molybdenum treatments. CHEMOSPHERE 2018; 208:425-432. [PMID: 29885509 DOI: 10.1016/j.chemosphere.2018.05.165] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 05/25/2018] [Accepted: 05/27/2018] [Indexed: 06/08/2023]
Abstract
The C-repeat binding factor/dehydration responsive element binding proteins (CBF/DREB) constitute a large group of transcriptional factors. Their role in abiotic stresses such as drought, salinity and low temperature tolerance in plants have been well established, while little information about their role in metals stress tolerance is available. Transcriptomic analyses of four genes (DREB-1A, DREB-1B, DREB-1F and CBF) were carried out in industrially important plant Ricinus communis under cadmium (Cd) and molybdenum (Mo) treatments. Cadmium (in soil) and Mo (as foliar spray) were used separate as well as in combinations. All the genes (except DREB 1A) expressed under Cd stress, while Mo further enhanced their expression. The proline (55.68 ± 5.51 ppm) and phenolic (120.00 ± 14.40 ppm) contents were significant increase in combination treatments of Cd and Mo. Positive and significant correlations of DREB 1B, DREB 1F and CBF genes expressions with free proline (0.92, 0.93 and 0.88 respectively), phenolic (075, 0.77 and 0.62 respectively) contents and Cd accumulation were demonstrated. Nucleotide sequence of R. comunis DREB1F and CBF genes showed more than 80% homology with related genes of other flowering plants. Predicted amino acids sequence of R. communis DREB 1F and CBF protein fragment demonstrated more than 75% homology with related proteins from other flowering plants.
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Affiliation(s)
- Nasir Ali
- Department of Biotechnology, University of Malakand, Chakdara, 18800, Dir Lower, Khyber Pakhtunkhwa, Pakistan; Institute of Biological Sciences, Sarhad University of Science and Information Technology, Peshawar, 25000, Khyber Pakhtunkhwa, Pakistan.
| | - Fazal Hadi
- Department of Biotechnology, University of Malakand, Chakdara, 18800, Dir Lower, Khyber Pakhtunkhwa, Pakistan
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Radhakrishnan R, Alqarawi AA, Abd Allah EF. Bioherbicides: Current knowledge on weed control mechanism. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 158:131-138. [PMID: 29677595 DOI: 10.1016/j.ecoenv.2018.04.018] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 04/03/2018] [Accepted: 04/07/2018] [Indexed: 05/27/2023]
Abstract
Weed control is a challenging event during crop cultivation. Integrated management, including the application of bioherbicides, is an emerging method for weed control in sustainable agriculture. Plant extracts, allelochemicals and some microbes are utilized as bioherbicides to control weed populations. Bioherbicides based on plants and microbes inhibit the germination and growth of weeds; however,few studies conducted in weed physiology. This review ascribes the current knowledge of the physiological changes in weeds that occur during the exposure to bioherbicides. Plant extracts or metabolites are absorbed by weed seeds, which initiates damage to the cell membrane, DNA, mitosis, amylase activity and other biochemical processes and delays or inhibits seed germination. The growth of weeds is also retarded due to low rates of root-cell division, nutrient uptake, photosynthetic pigment synthesis, and plant growth hormone synthesis, while the productions of reactive oxygen species (ROS) and stress-mediated hormones increase, including irregular antioxidant activity. However, lytic enzymes and toxic substances secreted from microbes degrade the weed seed coat and utilize the endosperm for survival, which inhibits seed germination. The microbes grow through the intercellular spaces to reach the root core, and the deposition of toxins in the cells affects cell division and cellular functions. Some of the metabolites of deleterious microbes cause disease, necrosis and chlorosis,which inhibit the germination and growth of weed seeds by suppressing photosynthesis and gibberellin activities and enhancing ROS, abscisic acid and ethylene. This review explains the effects of bioherbicides (derived from plants and microbes) on weed-plant physiology to elucidate their modes of action.
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Affiliation(s)
| | - Abdulaziz A Alqarawi
- Plant Production Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box. 2460, Riyadh 11451, Saudi Arabia
| | - Elsayed Fathi Abd Allah
- Plant Production Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box. 2460, Riyadh 11451, Saudi Arabia.
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Levina A, Crans DC, Lay PA. Speciation of metal drugs, supplements and toxins in media and bodily fluids controls in vitro activities. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.01.002] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Oustriere N, Marchand L, Bouchardon JL, Faure O, Moutte J, Mench M. Aided phytostabilization of a trace element-contaminated technosol developed on steel mill wastes. JOURNAL OF HAZARDOUS MATERIALS 2016; 320:458-468. [PMID: 27585278 DOI: 10.1016/j.jhazmat.2016.08.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 06/15/2016] [Accepted: 08/18/2016] [Indexed: 06/06/2023]
Abstract
Aided phytostabilization of a barren, alkaline metal(loid)-contaminated technosol developed on steel mill wastes, with high soluble Cr and Mo concentrations, was assessed in a pot experiment using (1) Ni/Cd-tolerant populations of Festuca pratensis Huds., Holcus lanatus L., and Plantago lanceolata L. sowed in mixed stand and (2) six soil treatments: untreated soil (UNT), ramial chipped wood (RCW, 500m3ha-1), composted sewage sludge (CSS, 120t DW ha-1), UNT soil amended with compost (5% w/w) and either vermiculite (5%, VOM) or iron grit (1%, OMZ), and an uncontaminated soil (CTRL). In the CSS soil, pH and soluble Cr decreased whereas soluble Cu, K, Fe, Mn, Mg, Ni and P increased. The RCW treatment enhanced soluble Fe, Mn, and Mg concentrations. After 15 weeks, shoot DW yield and shoot Cd, Cu, Fe, Mn, Mo, Zn, and Mg removals peaked for F. pratensis grown on the CSS soil, with lowest shoot Cr, Ni and Mo concentrations. Holcus lanatus only grew on the CTRL, UNT, and CSS soils and P. lanceolata on the CTRL soil. Best treatment, F. pratensis grown on the CSS soil, led to a dense grass cover but its shoot Mo concentration exceeded the maximum permitted concentration in forage.
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Affiliation(s)
| | | | | | - Olivier Faure
- ENSM-SE Centre SPIN, 158 cours Fauriel, 42023 St Etienne, France; Université Jean Monnet, 23 rue Dr. Paul Michelon, 42100 St Etienne, France.
| | - Jacques Moutte
- ENSM-SE Centre SPIN, 158 cours Fauriel, 42023 St Etienne, France.
| | - Michel Mench
- BIOGECO, INRA, Univ. Bordeaux, 33615 Pessac, France.
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Schalk IJ, Cunrath O. An overview of the biological metal uptake pathways in Pseudomonas aeruginosa. Environ Microbiol 2016; 18:3227-3246. [PMID: 27632589 DOI: 10.1111/1462-2920.13525] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 09/07/2016] [Indexed: 12/21/2022]
Abstract
Biological metal ions, including Co, Cu, Fe, Mg, Mn, Mo, Ni and Zn ions, are necessary for the survival and the growth of all microorganisms. Their biological functions are linked to their particular chemical properties: they play a role in structuring macromolecules and/or act as co-factors catalyzing diverse biochemical reactions. These metal ions are also essential for microbial pathogens during infection: they are involved in bacterial metabolism and various virulence factor functions. Therefore, during infection, bacteria need to acquire biological metal ions from the host such that there is competition for these ions between the bacterium and the host. Evidence is increasingly emerging of "nutritional immunity" against pathogens in the hosts; this includes strategies making access to metals difficult for infecting bacteria. It is clear that biological metals play key roles during infection and in the battle between the pathogens and the host. Here, we summarize current knowledge about the strategies used by Pseudomonas aeruginosa to access the various biological metals it requires. P. aeruginosa is a medically significant Gram-negative bacterial opportunistic pathogen that can cause severe chronic lung infections in cystic fibrosis patients and that is responsible for nosocomial infections worldwide.
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Affiliation(s)
- Isabelle J Schalk
- UMR 7242, Université de Strasbourg-CNRS, ESBS, Blvd Sébastien Brant, F-67413, Illkirch, Strasbourg, France.
| | - Olivier Cunrath
- UMR 7242, Université de Strasbourg-CNRS, ESBS, Blvd Sébastien Brant, F-67413, Illkirch, Strasbourg, France
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15
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Hadi F, Ali N, Fuller MP. Molybdenum (Mo) increases endogenous phenolics, proline and photosynthetic pigments and the phytoremediation potential of the industrially important plant Ricinus communis L. for removal of cadmium from contaminated soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:20408-20430. [PMID: 27457556 DOI: 10.1007/s11356-016-7230-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 07/11/2016] [Indexed: 05/26/2023]
Abstract
Cadmium (Cd) in agricultural soil negatively affects crops yield and compromises food safety. Remediation of polluted soil is necessary for the re-establishment of sustainable agriculture and to prevent hazards to human health and environmental pollution. Phytoremediation is a promising technology for decontamination of polluted soil. The present study investigated the effect of molybdenum (Mo) (0.5, 1.0 and 2.0 ppm) on endogenous production of total phenolics and free proline, plant biomass and photosynthetic pigments in Ricinus communis plants grown in Cd (25, 50 and 100 ppm) contaminated soils and the potential for Cd phytoextraction. Mo was applied via seed soaking, soil addition and foliar spray. Foliar sprays significantly increased plant biomass, Cd accumulation and bioconcentration. Phenolic concentrations showed significantly positive correlations with Cd accumulation in roots (R 2 = 0.793, 0.807 and 0.739) and leaves (R 2 = 0.707, 721 and 0.866). Similarly, proline was significantly positively correlated with Cd accumulation in roots (R 2 = 0.668, 0.694 and 0.673) and leaves (R 2 = 0.831, 0.964 and 0.930). Foliar application was found to be the most effective way to deliver Mo in terms of increase in plant growth, Cd accumulation and production of phenolics and proline.
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Affiliation(s)
- Fazal Hadi
- Department of Biotechnology, University of Malakand, Chakdara, Dir Lower, Khyber Pakhtunkhwa, 18800, Pakistan.
| | - Nasir Ali
- Department of Biotechnology, University of Malakand, Chakdara, Dir Lower, Khyber Pakhtunkhwa, 18800, Pakistan
- Department of Biotechnology and Microbiology, Sarhad University of Science and Information Technology, Peshawar, Khyber Pakhtunkhwa, Pakistan
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Porcher JP, Fogeron T, Gomez-Mingot M, Chamoreau LM, Li Y, Fontecave M. Synthesis and Reactivity of a Bio-inspired Dithiolene Ligand and its Mo Oxo Complex. Chemistry 2016; 22:4447-53. [PMID: 26880579 DOI: 10.1002/chem.201504373] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Indexed: 12/15/2022]
Abstract
An original synthesis of the fused pyranoquinoxaline dithiolene ligand qpdt(2-) is discussed in detail. The most intriguing step is the introduction of the dithiolene moiety by Pd-catalyzed carbon-sulfur coupling. The corresponding Mo(IV)O complex (Bu4N)2 [MoO(qpdt)2] (2) underwent reversible protonation in a strongly acidic medium and remained stable under anaerobic conditions. Besides, 2 was found to be very sensitive towards oxygen, as upon oxidation it formed a planar dithiin derivative. Moreover, the qpdt(2-) ligand in the presence of [MoCl4 (tBuNC)2] formed a tetracyclic structure. The products resulting from the unique reactivity of qpdt(2-) were characterized by X-ray diffraction, mass spectrometry, NMR spectroscopy, UV/Vis spectroscopy, and electrochemistry. Plausible mechanisms for the formation of these products are also proposed.
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Affiliation(s)
- Jean-Philippe Porcher
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231, Paris CEDEX 05, France
| | - Thibault Fogeron
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231, Paris CEDEX 05, France
| | - Maria Gomez-Mingot
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231, Paris CEDEX 05, France
| | - Lise-Marie Chamoreau
- Sorbonne Universités, UPMC Université Paris 6, Institut Parisien de Chimie Moléculaire, UMR 8232 CNRS, 4 Place Jussieu, 75252, Paris CEDEX 05, France
| | - Yun Li
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231, Paris CEDEX 05, France.
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231, Paris CEDEX 05, France.
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Acetylene hydratase: a non-redox enzyme with tungsten and iron-sulfur centers at the active site. J Biol Inorg Chem 2016; 21:29-38. [PMID: 26790879 DOI: 10.1007/s00775-015-1330-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 12/30/2015] [Indexed: 01/05/2023]
Abstract
In living systems, tungsten is exclusively found in microbial enzymes coordinated by the pyranopterin cofactor, with additional metal coordination provided by oxygen and/or sulfur, and/or selenium atoms in diverse arrangements. Prominent examples are formate dehydrogenase, formylmethanofuran dehydrogenase, and aldehyde oxidoreductase all of which catalyze redox reactions. The bacterial enzyme acetylene hydratase (AH) stands out of its class as it catalyzes the conversion of acetylene to acetaldehyde, clearly a non-redox reaction and a reaction distinct from the reduction of acetylene to ethylene by nitrogenase. AH harbors two pyranopterins bound to W, and a [4Fe-4S] cluster. W is coordinated by four dithiolene sulfur atoms, one cysteine sulfur, and one oxygen ligand. AH activity requires a strong reductant suggesting W(IV) as the active oxidation state. Two different types of reaction pathways have been proposed. The 1.26 Å structure reveals a water molecule coordinated to W which could gain a partially positive net charge by the adjacent protonated Asp-13, enabling a direct attack of C2H2. To access the W-Asp site, a substrate channel was evolved distant from where it is found in other members of the DMSOR family. Computational studies of this second shell mechanism led to unrealistically high energy barriers, and alternative pathways were proposed where C2H2 binds directly to W. The architecture of the catalytic cavity, the specificity for C2H2 and the results from site-directed mutagenesis do not support this first shell mechanism. More investigations including structural information on the binding of C2H2 are needed to present a conclusive answer.
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18
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Lee SM, Radhakrishnan R, Kang SM, Kim JH, Lee IY, Moon BK, Yoon BW, Lee IJ. Phytotoxic mechanisms of bur cucumber seed extracts on lettuce with special reference to analysis of chloroplast proteins, phytohormones, and nutritional elements. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 122:230-7. [PMID: 26277540 DOI: 10.1016/j.ecoenv.2015.07.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 06/29/2015] [Accepted: 07/14/2015] [Indexed: 06/04/2023]
Abstract
Bioherbicides from plant extracts are an effective and environmentally friendly method to prevent weed growth. The present investigation was aimed at determining the inhibitory effect of bur cucumber seed extracts (BSE) on lettuce plant growth. Bur cucumber seeds were ground with water, and two different concentrations of seed extracts (10% and 20%) were prepared and applied to lettuce plants. Decreased plant height, number of leaves, leaf length, leaf width, anProd. Type: FTPd leaf area were found in lettuce exposed to BSE as compared with controls. A significant reduction in lettuce biomass was observed in 20% BSE-treated plants due to the presence of higher amounts of phenolic content in the extracts. Moreover, a significant inhibitory chemical, 2-linoleoyl glycerol, was identified in BSE extracts. The mechanism of plant growth inhibition was assayed in lettuce proteins by 2-dimensional electrophoresis (2-DE) and the LC-MS/MS method. In total, 57 protein spots were detected in plants treated with 20% BSE and control plants. Among these, 39 proteins were down-regulated and 18 proteins were up-regulated in plants exposed to 20% BSE as compared with controls. The presence of low levels of chlorophyll a/b binding protein and oxygen-evolving enhancer protein 1 in BSE-exposed plants reduced photosynthetic pigment synthesis and might be a reason for stunted plant growth. Indeed, the plant-growth stimulating hormone gibberellin was inhibited, and synthesis of stress hormones such as abscisic acid, jasmonic acid, and salicylic acid were triggered in lettuce by the effects of BSE. Uptake of essential nutrients, Ca, Fe, Mg, K, S, and Mo, was deficient and accumulation of the toxic ions Cu, Zn, and Na was higher in BSE-treated plants. The results of this study suggest that extracts of bur cucumber seeds can be an effective eco-friendly bioherbicide for weed control that work by inhibiting mechanisms of photosynthesis and regulating phytohormones and nutritional elements.
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Affiliation(s)
- Seok-Min Lee
- School of Applied Biosciences, Kyungpook National University, Daegu 702-701, Republic of Korea
| | | | - Sang-Mo Kang
- School of Applied Biosciences, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Jin-Hyo Kim
- Chemical Safety Division, National Academy of Agricultural Science, RDA, Republic of Korea
| | - In-Yong Lee
- Department of Agro-Food Safety, National Academy of Agicultural Science, RDA, Republic of Korea
| | - Bong-Kyu Moon
- School of Applied Biosciences, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Byung-Wook Yoon
- School of Applied Biosciences, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Daegu 702-701, Republic of Korea.
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Porcher JP, Fogeron T, Gomez-Mingot M, Derat E, Chamoreau LM, Li Y, Fontecave M. A Bioinspired Molybdenum Complex as a Catalyst for the Photo- and Electroreduction of Protons. Angew Chem Int Ed Engl 2015; 54:14090-3. [PMID: 26404460 DOI: 10.1002/anie.201505607] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 07/18/2015] [Indexed: 12/25/2022]
Abstract
A molybdenum-dithiolene-oxo complex was prepared as a model of some active sites of Mo/W-dependent enzymes. The ligand, a quinoxaline-pyran-fused dithiolene, mimics molybdopterin present in these active sites. For the first time, this type of complex was shown to be active as a catalyst for the photoreduction of protons with excellent turnover numbers (500) and good stability in aqueous/organic media and for the electroreduction of protons in acetonitrile with remarkable rate constants (1030 s(-1) at -1.3 V versus Ag/AgCl). DFT calculations provided insight into the catalytic cycle of the reaction, suggesting that the oxo ligand plays a key role in proton exchange. These results provide a basis to optimize this new class of H2 -evolving catalysts.
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Affiliation(s)
- Jean-Philippe Porcher
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France)
| | - Thibault Fogeron
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France)
| | - Maria Gomez-Mingot
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France)
| | - Etienne Derat
- Sorbonne Universités, UPMC Université Paris 6, Institut Parisien de Chimie Moléculaire, UMR 8232 CNRS, 4 place Jussieu, 75252 Paris Cedex 5 (France)
| | - Lise-Marie Chamoreau
- Sorbonne Universités, UPMC Université Paris 6, Institut Parisien de Chimie Moléculaire, UMR 8232 CNRS, 4 place Jussieu, 75252 Paris Cedex 5 (France)
| | - Yun Li
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France).
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France).
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20
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Porcher J, Fogeron T, Gomez‐Mingot M, Derat E, Chamoreau L, Li Y, Fontecave M. A Bioinspired Molybdenum Complex as a Catalyst for the Photo‐ and Electroreduction of Protons. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505607] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jean‐Philippe Porcher
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France)
| | - Thibault Fogeron
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France)
| | - Maria Gomez‐Mingot
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France)
| | - Etienne Derat
- Sorbonne Universités, UPMC Université Paris 6, Institut Parisien de Chimie Moléculaire, UMR 8232 CNRS, 4 place Jussieu, 75252 Paris Cedex 5 (France)
| | - Lise‐Marie Chamoreau
- Sorbonne Universités, UPMC Université Paris 6, Institut Parisien de Chimie Moléculaire, UMR 8232 CNRS, 4 place Jussieu, 75252 Paris Cedex 5 (France)
| | - Yun Li
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France)
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, UMR 8229 CNRS, Collège de France, Université Paris 6, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05 (France)
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21
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Abstract
The transition element molybdenum (Mo) is of primordial importance for biological systems, because it is required by enzymes catalyzing key reactions in the global carbon, sulfur, and nitrogen metabolism. To gain biological activity, Mo has to be complexed by a special cofactor. With the exception of bacterial nitrogenase, all Mo-dependent enzymes contain a unique pyranopterin-based cofactor coordinating a Mo atom at their catalytic site. Various types of reactions are catalyzed by Mo-enzymes in prokaryotes including oxygen atom transfer, sulfur or proton transfer, hydroxylation, or even nonredox reactions. Mo-enzymes are widespread in prokaryotes and many of them were likely present in the Last Universal Common Ancestor. To date, more than 50--mostly bacterial--Mo-enzymes are described in nature. In a few eubacteria and in many archaea, Mo is replaced by tungsten bound to the same unique pyranopterin. How Mo-cofactor is synthesized in bacteria is reviewed as well as the way until its insertion into apo-Mo-enzymes.
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22
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Darnajoux R, Constantin J, Miadlikowska J, Lutzoni F, Bellenger JP. Is vanadium a biometal for boreal cyanolichens? THE NEW PHYTOLOGIST 2014; 202:765-771. [PMID: 24641550 DOI: 10.1111/nph.12777] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 02/17/2014] [Indexed: 06/03/2023]
Abstract
Molybdenum (Mo) nitrogenase has long been considered the predominant isoenzyme responsible for dinitrogen fixation worldwide. Recent findings have challenged the paradigm of Mo hegemony, and highlighted the role of alternative nitrogenases, such as the vanadium-nitrogenase. Here, we first characterized homeostasis of vanadium (V) along with other metals in situ in the dinitrogen fixing cyanolichen Peltigera aphthosa. These lichens were sampled in natural sites exposed to various levels of atmospheric metal deposition. These results were compared with laboratory experiments where Anabaena variabilis, which is also hosting the V-nitrogenase, and a relatively close relative of the lichen cyanobiont Nostoc, was subjected to various levels of V. We report here that V is preferentially allocated to cephalodia, specialized structures where dinitrogen fixation occurs in tri-membered lichens. This specific allocation is biologically controlled and tightly regulated. Vanadium homeostasis in lichen cephalodia exposed to various V concentrations is comparable to the one observed in Anabaena variabilis and other dinitrogen fixing organisms using V-nitrogenase. Overall, our findings support current hypotheses that V could be a more important factor in mediating nitrogen input in high latitude ecosystems than previously recognized. They invite the reassessment of current theoretical models linking metal dynamics and dinitrogen fixation in boreal and subarctic ecosystems.
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Affiliation(s)
- Romain Darnajoux
- Centre Sève, Département de chimie, Université de Sherbrooke, J1K 2R1, QC, Canada
| | - Jérôme Constantin
- Centre Sève, Département de chimie, Université de Sherbrooke, J1K 2R1, QC, Canada
| | | | - François Lutzoni
- Department of Biology, Duke University, Box 90338, Durham, NC, 27708-0338, USA
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23
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Kumar A, Koch A, Borthakur R, Chakraborty M, De A, Phukan A, Bez G, Lal R. Synthesis and spectroscopic characterization of monometallic molybdenum (VI) complexes derived from bis(2-hydroxy-1-naphthaldehyde)succinoyldihydrazone. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.01.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Thiam A, Jézéquel D, Groleau A, Prévot F, Lopes F, Albéric P, Quiblier C, Bura-Nakic E, Ciglenečki I, Lazar H, Viollier E. Biogeochemical Dynamics of Molybdenum in a Crater Lake: Seasonal Impact and Long-Term Removal. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/jwarp.2014.64031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Pushie MJ, Cotelesage JJ, George GN. Molybdenum and tungsten oxygen transferases – structural and functional diversity within a common active site motif. Metallomics 2014; 6:15-24. [DOI: 10.1039/c3mt00177f] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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26
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Koilraj P, Srinivasan K. ZnAl Layered Double Hydroxides As Potential Molybdate Sorbents and Valorize the Exchanged Sorbent for Catalytic Wet Peroxide Oxidation of Phenol. Ind Eng Chem Res 2013. [DOI: 10.1021/ie302782c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paulmanickam Koilraj
- Discipline of Inorganic Materials & Catalysis, CSIR-Central Salt and Marine Chemicals Research Institute (CSMCRI), Council of Scientific and Industrial Research, GB Marg, Bhavnagar 364002, India
- Academy of Scientific and Innovative
Research, Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, India
| | - Kannan Srinivasan
- Discipline of Inorganic Materials & Catalysis, CSIR-Central Salt and Marine Chemicals Research Institute (CSMCRI), Council of Scientific and Industrial Research, GB Marg, Bhavnagar 364002, India
- Academy of Scientific and Innovative
Research, Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, India
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27
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Pushie MJ, Cotelesage JJH, Lyashenko G, Hille R, George GN. X-ray Absorption Spectroscopy of a Quantitatively Mo(V) Dimethyl Sulfoxide Reductase Species. Inorg Chem 2013; 52:2830-7. [DOI: 10.1021/ic301660e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- M. Jake Pushie
- Molecular and Environmental Sciences Research Group, Department of
Geological Sciences, University of Saskatchewan, SK, S7N 5E2, Canada
| | - Julien J. H. Cotelesage
- Molecular and Environmental Sciences Research Group, Department of
Geological Sciences, University of Saskatchewan, SK, S7N 5E2, Canada
- Canadian Light Source, 101 Perimeter Road,
Saskatoon, SK, S7N 0X4, Canada
| | - Ganna Lyashenko
- Department of Biochemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Russ Hille
- Department of Biochemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Graham N. George
- Molecular and Environmental Sciences Research Group, Department of
Geological Sciences, University of Saskatchewan, SK, S7N 5E2, Canada
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28
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Gonzalez PJ, Rivas MG, Mota CS, Brondino CD, Moura I, Moura JJ. Periplasmic nitrate reductases and formate dehydrogenases: Biological control of the chemical properties of Mo and W for fine tuning of reactivity, substrate specificity and metabolic role. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2012.05.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Wang D. Redox chemistry of molybdenum in natural waters and its involvement in biological evolution. Front Microbiol 2012; 3:427. [PMID: 23267355 PMCID: PMC3528336 DOI: 10.3389/fmicb.2012.00427] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Accepted: 12/03/2012] [Indexed: 11/13/2022] Open
Abstract
The transition element molybdenum (Mo) possesses diverse valances (+II to +VI), and is involved in forming cofactors in more than 60 enzymes in biology. Redox switching of the element in these enzymes catalyzes a series of metabolic reactions in both prokaryotes and eukaryotes, and the element therefore plays a fundamental role in the global carbon, nitrogen, and sulfur cycling. In the present oxygenated waters, oxidized Mo(VI) predominates thermodynamically, whilst reduced Mo species are mainly confined within specific niches including cytoplasm. Only recently has the reduced Mo(V) been separated from Mo(VI) in sulfidic mats and even in some reducing waters. Given the presence of reduced Mo(V) in contemporary anaerobic habitats, it seems that reduced Mo species were present in the ancient reducing ocean (probably under both ferruginous and sulfidic conditions), prompting the involvement of Mo in enzymes including nitrogenase and nitrate reductase. During the global transition to oxic conditions, reduced Mo species were constrained to specific anaerobic habitats, and efficient uptake systems of oxidized Mo(VI) became a selective advantage for current prokaryotic and eukaryotic cells. Some prokaryotes are still able to directly utilize reduced Mo if any exists in ambient environments. In total, this mini-review describes the redox chemistry and biogeochemistry of Mo over the Earth’s history.
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Affiliation(s)
- Deli Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University Xiamen, China
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30
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A first analysis of metallome biosignatures of hyperthermophilic Archaea. ARCHAEA-AN INTERNATIONAL MICROBIOLOGICAL JOURNAL 2012; 2012:789278. [PMID: 23243390 PMCID: PMC3518089 DOI: 10.1155/2012/789278] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 09/27/2012] [Accepted: 09/29/2012] [Indexed: 11/18/2022]
Abstract
To date, no experimental data has been reported for the metallome of hyperthermophilic microorganisms although their metal requirements for growth are known to be unique. Here, experiments were conducted to determine (i) cellular trace metal concentrations of the hyperthermophilic Archaea Methanococcus jannaschii and Pyrococcus furiosus, and (ii) a first estimate of the metallome for these hyperthermophilic species via ICP-MS. The metal contents of these cells were compared to parallel experiments using the mesophilic bacterium Escherichia coli grown under aerobic and anaerobic conditions. Fe and Zn were typically the most abundant metals in cells. Metal concentrations for E. coli grown aerobically decreased in the order Fe > Zn > Cu > Mo > Ni > W > Co. In contrast, M. jannaschii and P. furiosus show almost the reverse pattern with elevated Ni, Co, and W concentrations. Of the three organisms, a biosignature is potentially demonstrated for the methanogen M. jannaschii that may, in part, be related to the metallome requirements of methanogenesis. The bioavailability of trace metals more than likely has varied through time. If hyperthermophiles are very ancient, then the trace metal patterns observed here may begin to provide some insights regarding Earth's earliest cells and in turn, early Earth chemistry.
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Ilbert M, Bonnefoy V. Insight into the evolution of the iron oxidation pathways. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2012; 1827:161-75. [PMID: 23044392 DOI: 10.1016/j.bbabio.2012.10.001] [Citation(s) in RCA: 185] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 09/27/2012] [Accepted: 10/01/2012] [Indexed: 01/01/2023]
Abstract
Iron is a ubiquitous element in the universe. Ferrous iron (Fe(II)) was abundant in the primordial ocean until the oxygenation of the Earth's atmosphere led to its widespread oxidation and precipitation. This change of iron bioavailability likely put selective pressure on the evolution of life. This element is essential to most extant life forms and is an important cofactor in many redox-active proteins involved in a number of vital pathways. In addition, iron plays a central role in many environments as an energy source for some microorganisms. This review is focused on Fe(II) oxidation. The fact that the ability to oxidize Fe(II) is widely distributed in Bacteria and Archaea and in a number of quite different biotopes suggests that the dissimilatory Fe(II) oxidation is an ancient energy metabolism. Based on what is known today about Fe(II) oxidation pathways, we propose that they arose independently more than once in evolution and evolved convergently. The iron paleochemistry, the phylogeny, the physiology of the iron oxidizers, and the nature of the cofactors of the redox proteins involved in these pathways suggest a possible scenario for the timescale in which each type of Fe(II) oxidation pathways evolved. The nitrate dependent anoxic iron oxidizers are likely the most ancient iron oxidizers. We suggest that the phototrophic anoxic iron oxidizers arose in surface waters after the Archaea/Bacteria-split but before the Great Oxidation Event. The neutrophilic oxic iron oxidizers possibly appeared in microaerobic marine environments prior to the Great Oxidation Event while the acidophilic ones emerged likely after the advent of atmospheric O(2). This article is part of a Special Issue entitled: The evolutionary aspects of bioenergetic systems.
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Affiliation(s)
- Marianne Ilbert
- Aix-Marseille Université, CNRS, BIP UMR7281,13009, Marseille, France.
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van Gestel CAM, McGrath SP, Smolders E, Ortiz MD, Borgman E, Verweij RA, Buekers J, Oorts K. Effect of long-term equilibration on the toxicity of molybdenum to soil organisms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2012; 162:1-7. [PMID: 22243841 DOI: 10.1016/j.envpol.2011.10.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 08/12/2011] [Accepted: 10/09/2011] [Indexed: 05/31/2023]
Abstract
To determine if long-term equilibration may alleviate molybdenum toxicity, earthworms, enchytraeids, collembolans and four plant species were exposed to three soils freshly spiked with Na(2)MoO(4).2H(2)O and equilibrated for 6 or 11 months in the field with free drainage. Total Mo concentrations in soil decreased by leaching, most (up to 98%) in sandy soil and less (54-62%) in silty and clayey soils. Changes in residual Mo toxicity with time were inconclusive in sandy soil. In the other two soils, toxicity of residual total Mo was significantly reduced after 11 months equilibration with a median 5.5-fold increase in ED50s. Mo fixation in soil, i.e. the decrease of soil solution Mo concentrations at equivalent residual total soil Mo, was maximally a factor of 2.1 only. This experiment shows natural attenuation of molybdate ecotoxicity under field conditions is related to leaching of excess Mo and other ions as well as to slow ageing reactions.
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Affiliation(s)
- Cornelis A M van Gestel
- Department of Animal Ecology, Faculty of Earth and Life Science, VU University, Amsterdam, The Netherlands.
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Schoepp-Cothenet B, van Lis R, Philippot P, Magalon A, Russell MJ, Nitschke W. The ineluctable requirement for the trans-iron elements molybdenum and/or tungsten in the origin of life. Sci Rep 2012; 2:263. [PMID: 22355775 PMCID: PMC3278043 DOI: 10.1038/srep00263] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 01/09/2012] [Indexed: 11/26/2022] Open
Abstract
An evolutionary tree of key enzymes from the Complex-Iron-Sulfur-Molybdoenzyme (CISM) superfamily distinguishes "ancient" members, i.e. enzymes present already in the last universal common ancestor (LUCA) of prokaryotes, from more recently evolved subfamilies. The majority of the presented subfamilies and, as a consequence, the Molybdo-enzyme superfamily as a whole, appear to have existed in LUCA. The results are discussed with respect to the nature of bioenergetic substrates available to early life and to problems arising from the low solubility of molybdenum under conditions of the primordial Earth.
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Affiliation(s)
- Barbara Schoepp-Cothenet
- Laboratoire de Bioénergétique et Ingénierie des Protéines (BIP), CNRS, Univ. Aix/Marseille, Marseille/France
| | - Robert van Lis
- Laboratoire de Bioénergétique et Ingénierie des Protéines (BIP), CNRS, Univ. Aix/Marseille, Marseille/France
| | | | - Axel Magalon
- Laboratoire de Chimie Bactérienne (LCB), CNRS, Univ. Aix/Marseille, Marseille/France
| | - Michael J. Russell
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
| | - Wolfgang Nitschke
- Laboratoire de Bioénergétique et Ingénierie des Protéines (BIP), CNRS, Univ. Aix/Marseille, Marseille/France
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Herdt TH, Hoff B. The Use of Blood Analysis to Evaluate Trace Mineral Status in Ruminant Livestock. Vet Clin North Am Food Anim Pract 2011; 27:255-83, vii. [DOI: 10.1016/j.cvfa.2011.02.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Bellenger JP, Wichard T, Xu Y, Kraepiel AML. Essential metals for nitrogen fixation in a free-living N₂-fixing bacterium: chelation, homeostasis and high use efficiency. Environ Microbiol 2011; 13:1395-411. [PMID: 21392197 DOI: 10.1111/j.1462-2920.2011.02440.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Biological nitrogen fixation, the main source of new nitrogen to the Earth's ecosystems, is catalysed by the enzyme nitrogenase. There are three nitrogenase isoenzymes: the Mo-nitrogenase, the V-nitrogenase and the Fe-only nitrogenase. All three types require iron, and two of them also require Mo or V. Metal bioavailability has been shown to limit nitrogen fixation in natural and managed ecosystems. Here, we report the results of a study on the metal (Mo, V, Fe) requirements of Azotobacter vinelandii, a common model soil diazotroph. In the growth medium of A. vinelandii, metals are bound to strong complexing agents (metallophores) excreted by the bacterium. The uptake rates of the metallophore complexes are regulated to meet the bacterial metal requirement for diazotrophy. Under metal-replete conditions Mo, but not V or Fe, is stored intracellularly. Under conditions of metal limitation, intracellular metals are used with remarkable efficiency, with essentially all the cellular Mo and V allocated to the nitrogenase enzymes. While the Mo-nitrogenase, which is the most efficient, is used preferentially, all three nitrogenases contribute to N₂ fixation in the same culture under metal limitation. We conclude that A. vinelandii is well adapted to fix nitrogen in metal-limited soil environments.
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Affiliation(s)
- J-P Bellenger
- Department of Geosciences, PEI, Guyot Hall, Princeton University, Princeton, NJ 08544, USA.
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36
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Van Gestel CAM, Ortiz MD, Borgman E, Verweij RA. The bioaccumulation of Molybdenum in the earthworm Eisenia andrei: influence of soil properties and ageing. CHEMOSPHERE 2011; 82:1614-1619. [PMID: 21146852 DOI: 10.1016/j.chemosphere.2010.11.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Revised: 11/11/2010] [Accepted: 11/16/2010] [Indexed: 05/30/2023]
Abstract
Mo bioaccumulation in the earthworm Eisenia andrei was determined after 28 d exposure in ten different European field soils (pH 4.4-7.8) and an artificial soil, freshly spiked with Na₂MoO₄ at concentrations between 3.2 and 3200 mg Mo kg⁻¹ dry soil. Three field soils were also tested after ageing for 11 months. Earthworm Mo concentrations generally levelled off at high exposure levels but in most soils showed a (nearly) linear increase with increasing soil concentrations in the lower, non-toxic range (below EC10 or NOEC for reproduction effects). Bioaccumulation (BAF) and Bioconcentration factors (BCF) were calculated as the ratio of earthworm concentration to soil and estimated porewater concentrations, respectively. BAFs (0.35-3.44) and BCFs (1.31-276) did not seem much affected by soil concentration, suggesting that earthworms are not capable of regulating their internal Mo concentrations. BAF was best predicted by ammonium oxalate-extractable iron (Fe(ox)) and phosphor (P(ox)) contents of the soils.
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Affiliation(s)
- Cornelis A M Van Gestel
- Department of Animal Ecology, Faculty of Earth and Life Sciences, VU University, Amsterdam, The Netherlands.
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van Gestel CAM, Borgman E, Verweij RA, Ortiz MD. The influence of soil properties on the toxicity of molybdenum to three species of soil invertebrates. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2011; 74:1-9. [PMID: 20951431 DOI: 10.1016/j.ecoenv.2010.10.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Revised: 09/23/2010] [Accepted: 10/03/2010] [Indexed: 05/30/2023]
Abstract
Mo toxicity to earthworms (Eisenia andrei), Collembola (Folsomia candida) and enchytraeids (Enchytraeus crypticus) was determined in 10 European soils and a standard artificial soil, freshly spiked with Na(2)MoO(4), after 28 days exposure. Mo affected survival only in three low pH sandy soils; in all other soils LC50 was >3200 mg Mo/kg dry soil. EC50 values for the reproduction toxicity of Mo were 129-2378 mg/kg for earthworms, 72->3396 mg/kg for Collembola, and 301->2820 mg/kg for enchytraeids. Variation in toxicity among soils could not be explained by differences in available (pore water, water and 0.01 M CaCl(2) extractable) Mo concentrations. Clay content best predicted the EC50 for Mo toxicity to earthworms, while toxicity of Mo for enchytraeids was best described by soil pH. For Collembola no relationships could be derived due to the absence of toxicity in most soils. Soil properties had a strong but species-specific effect on Mo toxicity to soil invertebrates.
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Affiliation(s)
- Cornelis A M van Gestel
- Department of Animal Ecology, Faculty of Earth and Life Sciences, VU University, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands.
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Buekers J, Mertens J, Smolders E. Toxicity of the molybdate anion in soil is partially explained by effects of the accompanying cation or by soil pH. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2010; 29:1274-1278. [PMID: 20821569 DOI: 10.1002/etc.162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Previous studies have shown that toxicity of cationic trace metals in soil is partially confounded by effects of the accompanying anions. A similar assessment is reported here for toxicity of an oxyanion, i.e., molybdate (MoO(4) (2-)), the soil toxicity of which is relatively unexplored. Solubility and toxicity were compared between the soluble sodium molybdate (Na(2)MoO(4)) and the sparingly soluble molybdenum trioxide (MoO(3)). Confounding effects of salinity were excluded by referencing the Na(2)MoO(4) effect to that of sodium chloride (NaCl). The pH decrease from the acid MoO(3) amendment was equally referenced to a hydrochloric (HCl) treatment or a lime-controlled MoO(3) treatment. The concentrations of molybdenum (Mo) in soil solution or calcium chloride (CaCl(2)) 0.01 M extracts were only marginally affected by either MoO(3) or Na(2)MoO(4) as an Mo source after 10 to 13 days of equilibration. Effects of Mo on soil nitrification were fully confounded by associated changes in salinity or pH. Effects of Mo on growth of wheat seedlings (Triticum aestivum L) were more pronounced than those on nitrification, and toxicity thresholds were unaffected by the form of added Mo. The Mo thresholds for wheat growth were not confounded by pH or salinity at incipient toxicity. It is concluded that oxyanion toxicity might be confounded in relatively insensitive tests for which reference treatments should be included.
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Affiliation(s)
- Jurgen Buekers
- Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium.
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39
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[Molybdenum(VI)/aminopyridinium] system as catalyst for the epoxidation of cyclooctene with H2O2. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.02.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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40
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Lal RA, Chakrabarty M, Choudhury S, Ahmed A, Borthakur R, Kumar A. Synthesis and spectral characterization of homobimetallic molybdenum(VI) complexes derived from bis(2-hydroxy-1-naphthaldehyde)succinoyldihydrazone. J COORD CHEM 2009. [DOI: 10.1080/00958970903259451] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ram A. Lal
- a Department of Chemistry , North-Eastern Hill University , Shillong-793022 , Meghalaya , India
| | - Mithun Chakrabarty
- a Department of Chemistry , North-Eastern Hill University , Shillong-793022 , Meghalaya , India
| | - Sanjesh Choudhury
- a Department of Chemistry , North-Eastern Hill University , Shillong-793022 , Meghalaya , India
| | - Aziz Ahmed
- a Department of Chemistry , North-Eastern Hill University , Shillong-793022 , Meghalaya , India
| | - Roshmita Borthakur
- a Department of Chemistry , North-Eastern Hill University , Shillong-793022 , Meghalaya , India
| | - Arvind Kumar
- b Academia Sinica, Institute of Chemistry , 128 Academia Road, Sec.2, Nangkang, Taipei, 115, Taiwan , Republic of China
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41
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Nakagawa Y, Firdaus ML, Norisuye K, Sohrin Y, Irisawa K, Hirata T. Precise isotopic analysis of Mo in seawater using multiple collector-inductively coupled mass spectrometry coupled with a chelating resin column preconcentration method. Anal Chem 2009; 80:9213-9. [PMID: 19551942 DOI: 10.1021/ac801383t] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
It is widely recognized that the natural isotopic variation of Mo can provide crucial information about the geochemical circulation of Mo, and the ocean is an important reservoir of Mo. To obtain precise isotopic data on Mo in seawater samples using multiple collector-inductively coupled plasma mass spectrometry (MC-ICPMS), we have developed a preconcentration technique using 8-hydroxyquinoline bonded covalently to a vinyl polymer resin (TSK-8HQ). By optimizing the procedure, Mo in seawater could be effectively separated from matrix elements such as alkali, alkaline earth, and transition metals. With this technique, even with a 50-fold enrichment factor, the changes in the 98Mo/95Mo ratio during preconcentration were smaller than twice the standard deviation (SD) in this study. Mass discrimination of Mo isotopes during the measurement was externally corrected for by normalizing 86Sr/88Sr to 0.1194 using an exponential law. We evaluated delta98/95Mo to a precision of +/- 0.08 per thousand (+/-2 SD); this value was found to be less than one-third of previous reported values. Moreover, we were able to determine an accurate ratio for every pair of stable Mo isotopes, which was impossible with previous methods owing to the isobaric interference from the external elements (Zr and Ru). In this study, delta92/98Mo in seawater was first determined so that it had the smallest relative error. We applied the proposed method to four kinds of seawater samples. The Mo compositions were constant among them, with average delta98/95Mo and delta92/98Mo values of 2.45 +/- 0.11 and -4.94 +/- 0.09 per thousand (+/-2 SD), respectively. Our data indicate that seawater is enriched in heavy Mo isotopes than previously reported.
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Affiliation(s)
- Yusuke Nakagawa
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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42
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Gupta S, Pal S, Barik AK, Roy S, Hazra A, Mandal TN, Butcher RJ, Kar SK. Molybdenum(VI) complexes of a few pyrimidine derived ligands and the study of metal mediated CN bond cleavage resulting in ligand transformation during complex formation. Polyhedron 2009. [DOI: 10.1016/j.poly.2008.12.057] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Reduction of molybdate by sulfate-reducing bacteria. Biometals 2009; 22:131-9. [DOI: 10.1007/s10534-008-9198-8] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Accepted: 12/07/2008] [Indexed: 10/21/2022]
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44
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Timperio AM, Egidi MG, Zolla L. Proteomics applied on plant abiotic stresses: role of heat shock proteins (HSP). J Proteomics 2008; 71:391-411. [PMID: 18718564 DOI: 10.1016/j.jprot.2008.07.005] [Citation(s) in RCA: 249] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2008] [Revised: 07/14/2008] [Accepted: 07/15/2008] [Indexed: 10/21/2022]
Abstract
The most crucial function of plant cell is to respond against stress induced for self-defence. This defence is brought about by alteration in the pattern of gene expression: qualitative and quantitative changes in proteins are the result, leading to modulation of certain metabolic and defensive pathways. Abiotic stresses usually cause protein dysfunction. They have an ability to alter the levels of a number of proteins which may be soluble or structural in nature. Nowadays, in higher plants high-throughput protein identification has been made possible along with improved protein extraction, purification protocols and the development of genomic sequence databases for peptide mass matches. Thus, recent proteome analysis performed in the vegetal Kingdom has provided new dimensions to assess the changes in protein types and their expression levels under abiotic stress. As reported in this review, specific and novel proteins, protein-protein interactions and post-translational modifications have been identified, which play a role in signal transduction, anti-oxidative defence, anti-freezing, heat shock, metal binding etc. However, beside specific proteins production, plants respond to various stresses in a similar manner by producing heat shock proteins (HSPs), indicating a similarity in the plant's adaptive mechanisms; in plants, more than in animals, HSPs protect cells against many stresses. A relationship between ROS and HSP also seems to exist, corroborating the hypothesis that during the course of evolution, plants were able to achieve a high degree of control over ROS toxicity and are now using ROS as signalling molecules to induce HSPs.
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Affiliation(s)
- Anna Maria Timperio
- Department of Environmental Sciences, University of Tuscia, Largo dell'Università snc, 01100 Viterbo, Italy
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45
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Acetato complexes of molybdenum(V): A novel tetranuclear core based on the metal–metal bonded {Mo2O4}2+ units. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2008.02.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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46
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Bagherzadeh M, Tahsini L, Latifi R, Ellern A, Woo LK. Synthesis, crystal structure and catalytic activity of a novel Mo(VI)–oxazoline complex in highly efficient oxidation of sulfides to sulfoxides by urea hydrogen peroxide. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2007.10.017] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Wichard T, Bellenger JP, Loison A, Kraepiel AML. Catechol siderophores control tungsten uptake and toxicity in the nitrogen-fixing bacterium Azotobacter vinelandii. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2008; 42:2408-2413. [PMID: 18504973 DOI: 10.1021/es702651f] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Molybdenum (Mo) and tungsten (W), which have similar chemistry, are present at roughly the same concentration in the earth's continental crust, and both are present in oxic systems as oxoanions, molybdate and tungstate. Molybdenum is a cofactor in the molybdenum-nitrogenase enzyme and is thus an important micronutrient for N2-fixing bacteria such as Azotobacter vinelandii (A. vinelandii). Tungsten is known to be toxic to N2-fixing bacteria, partly by substituting for Mo in nitrogenase. We showthatthe catechol siderophores produced by A. vinelandii, in addition to being essential for iron acquisition, modulate the relative uptake of Mo and W. These catechol siderophores (particularly protochelin), whose concentrations in the growth medium increase sharply at high W, complex all the tungstate along with molybdate and some of the iron. The molybdenum-catechol complex is taken up much more rapidly than the W complex, allowing A. vinelandii to satisfy its Mo requirement and avoid W toxicity. Mutants deficient in the production of catechol siderophores are more sensitive to tungstate and have higher cellular W quotas than the wild type. The binding of metals by excreted catechol siderophores allows A. vinelandii to discriminate in its uptake of essential metals, such as Fe and Mo, over that of toxic metals, such as W, and to sustain high growth rates under adverse environmental conditions.
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Affiliation(s)
- Thomas Wichard
- Department of Geosciences, Princeton Environmental Institute, Guyot Hall, Princeton University, Princeton, New Jersey 08544, USA
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Role of mammalian cytosolic molybdenum Fe-S flavin hydroxylases in hepatic injury. Life Sci 2008; 82:780-8. [PMID: 18313080 DOI: 10.1016/j.lfs.2008.01.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2007] [Revised: 10/19/2007] [Accepted: 01/18/2008] [Indexed: 11/23/2022]
Abstract
The study was designed to investigate the role of molybdenum iron-sulfur flavin hydroxylases in the pathogenesis of liver injuries induced by structurally and mechanistically diverse hepatotoxicants. While carbon tetrachloride (CCl4), thioacetamide (TAA) and chloroform (CHCl3) inflict liver damage by producing free radicals, acetaminophen (AAP) and bromobenzene (BB) exert their effects by severe glutathione depletion. Appropriate doses of these compounds were administered to induce liver injury in rats. The activities of the Mo-Fe-S flavin hydroxylases were measured and correlated with the biochemical markers of hepatic injury. The activity levels of the anti-oxidative enzymes and glutathione redox cycling enzymes were also determined. The treatment of rats with the hepatotoxins that inflict liver injury by generating free radicals (CCl4, TAA, CHCl3) had elevated activity levels of hepatic Mo-Fe-S flavin hydroxylases (p<0.05). Specific inhibition of these hydroxylases by their common inhibitor, sodium tungstate, suppresses biochemical and oxidative stress markers of hepatic tissue damage. On the contrary, Mo-Fe-S flavin hydroxylases did not show any change in animals receiving AAP and BB. Correspondingly, sodium tungstate could not attenuate damage in AAP and BB treated groups of rats. The study concludes that Mo-Fe-S hydroxylases contribute to the hepatic injury inflicted by free radical generating agents and does not play any role in hepatic injury produced by glutathione depleting agents. The study has implication in understanding human liver diseases caused by a variety of agents, and to investigate the efficacy of the inhibitors of Mo-Fe-S flavin hydroxylases as potential therapeutic agents.
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Williams RJP. A system's view of the evolution of life. J R Soc Interface 2007; 4:1049-70. [PMID: 17439861 PMCID: PMC2396344 DOI: 10.1098/rsif.2007.0225] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2006] [Accepted: 02/19/2007] [Indexed: 11/12/2022] Open
Abstract
Previous treatments of biological evolution have concentrated upon either the general appearance or habits of organisms or the sequences of molecules, such as their proteins and DNA (RNA), within species. There is no consideration of the changing relationship of the chemistry of organisms to the elements and energy available from the environment. In essence, organisms at all times had to accumulate certain elements while rejecting others. Central to accumulation were C, N, H, P, S, K, Mg and Fe while, as ions, Na, Cl, Ca and other heavy metals were largely rejected. In order to form the vital biopolymers, C and H, from CO2 and H2O, had to be combined generating oxygen. The oxygen then slowly oxidized the environment over long periods of time. These environmental changes were relatively rapid, unconstrained and continuous, and they imposed a necessary sequential adaptation by organisms while increasing the use of energy. Then, evolution has a chemical direction in a combined organism/environment ecosystem. Joint organization of the initial reductive chemistry of cells and the later need to handle oxidative chemistry has also forced the complexity of chemistry of organism in compartments. The complexity increased to take full advantage of the environment from bacteria to humans in a logical, physical, compartmental and chemical sequence of the whole system. In one sense, rejected material can be looked upon as waste and, in the context of this article, leads to the consideration of the importance of waste from the activities of humankind.
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50
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Litos C, Aletras V, Hatzipanayioti D, Kamariotaki M, Lymberopoulou-Karaliota A. CV and NMR study on the reaction of Mo(VI) with 3,4-dihydroxybenzoic acid and ascorbic acid in aqueous solution. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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