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Zinc transporter plant

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https://www.readbyqxmd.com/read/29305420/in-vitro-reconstitution-functional-dissection-and-mutational-analysis-of-metal-ion-transport-by-mitoferrin-1
#1
Eric T Christenson, Austin S Gallegos, Anirban Banerjee
Iron is universally important to cellular metabolism and mitoferrins-1 and -2 have been proposed to be the iron importers of mitochondria, the cell's assembly plant of heme and iron-sulfur clusters. These iron-containing prosthetic groups are critical for a host of physiological processes ranging from oxygen transport and energy consumption to maintaining protein structural integrity. Mitoferrin-1 (Mfrn1) belongs to the mitochondrial carrier (MC) family and is atypical given its putative metallic cargo; most MCs transport nucleotides, amino acids, or other small to medium-size metabolites...
January 5, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29250721/annotation-and-characterization-of-cd-responsive-metal-transporter-genes-in-rapeseed-brassica-napus
#2
Xian Duo Zhang, Jin Guo Meng, Kai Xuan Zhao, Xi Chen, Zhi Min Yang
In higher plants, heavy metal transporters are responsible for metal uptake, translocation and homeostasis. These metals include essential metals such as zinc (Zn) or manganese (Mn) and non-essential metals like cadmium (Cd) or lead (Pb). Although a few heavy metal transporters have been well identified in model plants (e.g. Arabidopsis and rice), little is known about their functionality in rapeseed (Brassica napus). B. napus is an important oil crop ranking the third largest sources of vegetable oil over the world...
December 18, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/29234311/the-slzrt1-gene-encodes-a-plasma-membrane-located-zip-zrt-irt-like-protein-transporter-in-the-ectomycorrhizal-fungus-suillus-luteus
#3
Laura Coninx, Anneleen Thoonen, Eli Slenders, Emmanuelle Morin, Natascha Arnauts, Michiel Op De Beeck, Annegret Kohler, Joske Ruytinx, Jan V Colpaert
Zinc (Zn) is an essential micronutrient but may become toxic when present in excess. In Zn-contaminated environments, trees can be protected from Zn toxicity by their root-associated micro-organisms, in particular ectomycorrhizal fungi. The mechanisms of cellular Zn homeostasis in ectomycorrhizal fungi and their contribution to the host tree's Zn status are however not yet fully understood. The aim of this study was to identify and characterize transporters involved in Zn uptake in the ectomycorrhizal fungus Suillus luteus, a cosmopolitan pine mycobiont...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29218630/differential-reactivity-of-closely-related-zinc-ii-binding-metallothioneins-from-the-plant-arabidopsis-thaliana
#4
Hasan T Imam, Claudia A Blindauer
The dynamics of metal binding to and transfer from metalloproteins involved in metal homeostasis are important for understanding cellular distribution of metal ions. The dicotyledonous plant Arabidopsis thaliana has two type 4 seed-specific metallothionein homologues, MT4a and MT4b, with likely roles in zinc(II) homeostasis. These two metallothioneins are 84% identical, with full conservation of all metal-binding cysteine and histidine residues. Yet, differences in their spatial and temporal expression patterns suggested divergence in their biological roles...
December 7, 2017: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/29214991/pseudomonas-aeruginosa-zinc-uptake-in-chelating-environment-is-primarily-mediated-by-the-metallophore-pseudopaline
#5
Sébastien Lhospice, Nicolas Oswaldo Gomez, Laurent Ouerdane, Catherine Brutesco, Ghassan Ghssein, Christine Hajjar, Ahmed Liratni, Shuanglong Wang, Pierre Richaud, Sophie Bleves, Geneviève Ball, Elise Borezée-Durant, Ryszard Lobinski, David Pignol, Pascal Arnoux, Romé Voulhoux
Metal uptake is vital for all living organisms. In metal scarce conditions a common bacterial strategy consists in the biosynthesis of metallophores, their export in the extracellular medium and the recovery of a metal-metallophore complex through dedicated membrane transporters. Staphylopine is a recently described metallophore distantly related to plant nicotianamine that contributes to the broad-spectrum metal uptake capabilities of Staphylococcus aureus. Here we characterize a four-gene operon (PA4837-PA4834) in Pseudomonas aeruginosa involved in the biosynthesis and trafficking of a staphylopine-like metallophore named pseudopaline...
December 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29189890/decoding-the-role-of-hypothetical-protein-all3255-of-anabaena-pcc7120-in-heavy-metal-stress-management-in-escherichia-coli
#6
Prashant Kumar Singh, Mengmeng Tang, Sudhir Kumar, Alok Kumar Shrivastava
Cadmium is a non-essential toxic heavy metal for organisms, including plants and cyanobacteria. Cadmium resistance transporters involved in resistance of cells against various toxicants such as drugs and effluxes cytotoxic compounds from cells. However, cadmium resistance-associated protein (CadD) has never been reported from a diazotrophic cyanobacterium Anabaena sp. To test whether the hypothetical protein All3255 of Anabaena sp. PCC7120 a homolog of cadmium resistance-associated protein (CadD) involved in cadmium or heavy metal resistance or not, cloning and heterologous expression analysis of all3255 performed in Escherichia coli BL21 (DE3)...
November 30, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/29172132/melatonin-pretreatment-improves-vanadium-stress-tolerance-of-watermelon-seedlings-by-reducing-vanadium-concentration-in-the-leaves-and-regulating-melatonin-biosynthesis-and-antioxidant-related-gene-expression
#7
Muhammad Azher Nawaz, Yanyan Jiao, Chen Chen, Fareeha Shireen, Zuhua Zheng, Muhammad Imtiaz, Zhilong Bie, Yuan Huang
Vanadium (V) is an important heavy metal with ubiquitous presence in the Earth's crust, but limited information is available as to its effect on plants and management strategies. Melatonin is a widely studied biomolecule; it acts as an antioxidant and a signaling molecule that enhances the abiotic stress tolerance of plants. Melatonin improves copper, zinc, and cadmium tolerance in plants. In this study, we investigated the response of watermelon seedlings to V stress and the potential role of melatonin in enhancing V stress tolerance of watermelon seedlings...
November 20, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29169130/can-liming-reduce-cadmium-cd-accumulation-in-rice-oryza-sativa-in-slightly-acidic-soils-a-contradictory-dynamic-equilibrium-between-cd-uptake-capacity-of-roots-and-cd-immobilisation-in-soils
#8
Yongjie Yang, Jiangmin Chen, Qina Huang, Shaoqing Tang, Jianlong Wang, Peisong Hu, Guosheng Shao
Cadmium (Cd) accumulation in rice is strongly controlled by liming, but information on the use of liming to control Cd accumulation in rice grown in slightly acidic soils is inconsistent. Here, pot experiments were carried out to investigate the mechanisms of liming on Cd accumulation in two rice varieties focusing on two aspects: available/exchangeable Cd content in soils that were highly responsive to liming, and Cd uptake and transport capacity in the roots of rice in terms of Cd accumulation-relative gene expression...
November 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/29168918/nano-biohybrids-in-vivo-synthesis-of-metal-organic-frameworks-inside-living-plants
#9
Joseph J Richardson, Kang Liang
Plants have a complex passive fluid transport system capable of internalizing small molecules from the environment, and this system offers an ideal route for augmenting plants with functional nanomaterials. Current plant augmentation techniques use pre-formed nanomaterials and permeabilizing agents or plant cuttings. A so far unexplored concept is the formation of the functional material, in situ, from precursors small enough to be passively internalized through the roots without harming the plants. Metal-organic frameworks are ideal for in situ synthesis as they are composed of metal ions coordinated with organic ligands and have recently been mineralized around single-celled organisms in mild aqueous conditions...
November 23, 2017: Small
https://www.readbyqxmd.com/read/29121354/exogenous-glutathione-enhances-cadmium-accumulation-and-alleviates-its-toxicity-in-populus-%C3%A3-canescens
#10
Shen Ding, Chaofeng Ma, Wenguang Shi, Wenzhe Liu, Yan Lu, Qifeng Liu, Zhi-Bin Luo
Glutathione (GSH) plays an important role in cadmium (Cd) tolerance in woody plants, but the underlying mechanisms remain largely unknown. To elucidate the physiological and transcriptional regulation mechanisms of GSH-mediated Cd tolerance in woody plants, we exposed Populus × canescens (Ait.) Smith saplings to either 0 or 75 μM Cd together with one of three external GSH levels. Glutathione treatments include buthionine sulfoximine (BSO, an inhibitor of GSH biosynthesis), no external GSH and exogenous GSH...
November 7, 2017: Tree Physiology
https://www.readbyqxmd.com/read/29048564/phytosiderophores-determine-thresholds-for-iron-and-zinc-accumulation-in-biofortified-rice-endosperm-while-inhibiting-the-accumulation-of-cadmium
#11
Raviraj Banakar, Ana Alvarez Fernandez, Pablo Díaz-Benito, Javier Abadia, Teresa Capell, Paul Christou
Nicotianamine (NA) and 2'-deoxymugenic acid (DMA) are metal-chelating ligands that promote the accumulation of metals in rice endosperm, but it is unclear how these phytosiderophores regulate the levels of different metals and limit their accumulation. In this study, transgenic rice plants producing high levels of NA and DMA accumulated up to 4-fold more iron (Fe) and 2-fold more zinc (Zn) in the endosperm compared with wild-type plants. The distribution of Fe and Zn in vegetative tissues suggested that both metals are sequestered as a buffering mechanism to avoid overloading the seeds...
October 13, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29047263/cross-talk-between-phosphate-starvation-and-other-environmental-stress-signaling-pathways-in-plants
#12
REVIEW
Dongwon Baek, Hyun Jin Chun, Dae-Jin Yun, Min Chul Kim
The maintenance of inorganic phosphate (Pi) homeostasis is essential for plant growth and yield. Plants have evolved strategies to cope with Pi starvation at the transcriptional, post-transcriptional, and post-translational levels, which maximizes its availability. Many transcription factors, miRNAs, and transporters participate in the Pi starvation signaling pathway where their activities are modulated by sugar and phytohormone signaling. Environmental stresses significantly affect the uptake and utilization of nutrients by plants, but their effects on the Pi starvation response remain unclear...
October 2017: Molecules and Cells
https://www.readbyqxmd.com/read/29028613/divergent-biology-of-facultative-heavy-metal-plants
#13
REVIEW
Hermann Bothe, Aneta Słomka
Among heavy metal plants (the metallophytes), facultative species can live both in soils contaminated by an excess of heavy metals and in non-affected sites. In contrast, obligate metallophytes are restricted to polluted areas. Metallophytes offer a fascinating biology, due to the fact that species have developed different strategies to cope with the adverse conditions of heavy metal soils. The literature distinguishes between hyperaccumulating, accumulating, tolerant and excluding metallophytes, but the borderline between these categories is blurred...
September 7, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28993932/genome-wide-identification-of-cd-responsive-nramp-transporter-genes-and-analyzing-expression-of-nramp-1-mediated-by-mir167-in-brassica-napus
#14
Jin Guo Meng, Xian Duo Zhang, Shang Kun Tan, Kai Xuan Zhao, Zhi Min Yang
In plants, metal transporters are responsible for metal uptake, translocation and homeostasis. These metals include essential nutrients such as zinc (Zn) and manganese (Mn) or non-essential metals like cadmium (Cd) and lead (Pb). Although a few metal transporters have been well characterized in model plants, little is known about their functionality in rapeseed (Brassica napus). In the study, 22 NRAMP transporter genes from B. napus genome were identified and annotated using bioinformatics and high-throughput RNA-sequencing (RNA-seq)...
December 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28964989/heavy-metals-in-food-crops-soil-and-water-in-the-lihe-river-watershed-of-the-taihu-region-and-their-potential-health-risks-when-ingested
#15
Lian Chen, Shenglu Zhou, Yaxing Shi, Chunhui Wang, Baojie Li, Yan Li, Shaohua Wu
Environmental pollution by heavy metals resulting from rapid economic development is a major concern. Soil, water, wheat, and rice samples were collected from the Lihe River Watershed in the Taihu Region (east China). In this study area, many types of industrial plants, including ceramics factories, plants working with refractory materials, and chemical plants are densely distributed and cause serious heavy metal pollution. In addition, well-developed transportation and agricultural activities are also important sources of heavy metals...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28912786/co-infection-of-sweet-orange-with-severe-and-mild-strains-of-citrus-tristeza-virus-is-overwhelmingly-dominated-by-the-severe-strain-on-both-the-transcriptional-and-biological-levels
#16
Shimin Fu, Jonathan Shao, Changyong Zhou, John S Hartung
Citrus tristeza is one of the most destructive citrus diseases and is caused by the phloem-restricted Closterovirus, Citrus tristeza virus. Mild strain CTV-B2 does not cause obvious symptoms on indicators whereas severe strain CTV-B6 causes symptoms, including stem pitting, cupping, yellowing, and stiffening of leaves, and vein corking. Our laboratory has previously characterized changes in transcription in sweet orange separately infected with CTV-B2 and CTV-B6. In the present study, transcriptome analysis of Citrus sinensis in response to double infection by CTV-B2 and CTV-B6 was carried out...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28878495/the-expression-of-a-candidate-cucumber-fruit-sugar-starvation-marker-gene-cssef1-is-enhanced-in-malformed-fruit-induced-by-salinity
#17
Akio Tazuke, Tsuguki Kinoshita, Munehiko Asayama
The cucumber (Cucumis sativus L.) gene Cucumis sativus Somatic Embryogenesis Zinc Finger 1 (CsSEF1) was suggested to be a good marker gene for sugar starvation in fruit. The expression of this gene in fruits is dramatically upregulated in plants that have suffered either complete defoliation or prolonged darkness. CsSEF1 was initially discovered as a gene that was upregulated during somatic embryogenesis. We examined the difference in fruit parts and the effect of pollination on the upregulation of CsSEF1 induced by defoliation treatment...
July 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/28868060/absorption-kinetics-and-subcellular-fractionation-of-zinc-in-winter-wheat-in-response-to-nitrogen-supply
#18
Zhaojun Nie, Peng Zhao, Jia Wang, Jinfeng Li, Hongen Liu
Nitrogen (N) is critical for zinc (Zn) absorption into plant roots; this in turn allows for Zn accumulation and biofortification of grain in winter wheat (Triticum aestivum L.), an important food crop. However, little is known about root morphology and subcellular Zn distribution in response to N treatment at different levels of Zn supply. In this study, two nutrient solution culture experiments were conducted to examine Zn accumulation, Zn absorption kinetics, root morphology, and Zn subcellular distribution in wheat seedlings pre-cultured with different N concentrations...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28855023/fate-and-toxicity-of-zinc-oxide-nanomaterial-in-municipal-wastewaters
#19
Josh Smeraldi, Rajagopalan Ganesh, Turaj Hosseini, Leila Khatib, Betty H Olson, Diego Rosso
  The production of zinc nanomaterial has increased significantly over the past several years and, as a result, nanoparticles have navigated their way into wastewater streams. The transportation and toxicity of zinc nanomaterial within the wastewater treatment processes is not well known. In this study, the zinc nanomaterial and its fate were characterized in an activated sludge treatment process. The tests performed included batch studies to evaluate abiotic and biotic removal, toxicity studies to evaluate inhibition to coliform and nitrifying bacteria, and bioreactor studies to evaluate impact on operating parameters...
September 1, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28827455/transdetect-identifies-a-new-regulatory-module-controlling-phosphate-accumulation
#20
Sikander Pal, Mushtak Kisko, Christian Dubos, Benoit Lacombe, Pierre Berthomieu, Gabriel Krouk, Hatem Rouached
Identifying transcription factor (TFs) cooperation controlling target gene expression is still an arduous challenge. The accuracy of current methods at genome scale significantly drops with the increase in number of genes, which limits their applicability to more complex genomes, like animals and plants. Here, we developed an algorithm, TransDetect, able to predict TF combinations controlling the expression level of a given gene. TransDetect was used to identify novel TF modules regulating the expression of Arabidopsis (Arabidopsis thaliana) phosphate transporter PHO1;H3 comprising MYB15, MYB84, bHLH35, and ICE1...
October 2017: Plant Physiology
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