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Zinc transporter plant

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https://www.readbyqxmd.com/read/28496135/isolated-bacillus-subtilis-strain-330-2-and-its-antagonistic-genes-identified-by-the-removing-pcr
#1
Zahoor Ahmad, Jia Wu, Lulu Chen, Wubei Dong
Plant growth-promoting bacteria (PGPB) may trigger tolerance against biotic/abiotic stresses and growth enhancement in plants. In this study, an endophytic bacterial strain from rapeseed was isolated to assess its role in enhancing plant growth and tolerance to abiotic stresses, as well as banded leaf and sheath blight disease in maize. Based on 16S rDNA and BIOLOG test analysis, the 330-2 strain was identified as Bacillus subtilis. The strain produced indole-3-acetic acid, siderophores, lytic enzymes and solubilized different sources of organic/inorganic phosphates and zinc...
May 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28469631/genome-wide-identification-cloning-and-functional-analysis-of-the-zinc-iron-regulated-transporter-like-protein-zip-gene-family-in-trifoliate-orange-poncirus-trifoliata-l-raf
#2
Xing-Zheng Fu, Xue Zhou, Fei Xing, Li-Li Ling, Chang-Pin Chun, Li Cao, Mark G M Aarts, Liang-Zhi Peng
Zinc (Zn) and iron (Fe) deficiency are widespread among citrus plants, but the molecular mechanisms regarding uptake and transport of these two essential metal ions in citrus are still unclear. In the present study, 12 members of the Zn/Fe-regulated transporter (ZRT/IRT)-related protein (ZIP) gene family were identified and isolated from a widely used citrus rootstock, trifoliate orange (Poncirus trifoliata L. Raf.), and the genes were correspondingly named as PtZIPs according to the sequence and functional similarity to Arabidopsis thaliana ZIPs...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28455771/cadmium-and-zinc-activate-adaptive-mechanisms-in-nicotiana-tabacum-similar-to-those-observed-in-metal-tolerant-plants
#3
Rosario Vera-Estrella, María F Gómez-Méndez, Julio C Amezcua-Romero, Bronwyn J Barkla, Paul Rosas-Santiago, Omar Pantoja
Tobacco germinated and grew in the presence of high concentrations of cadmium and zinc without toxic symptoms. Evidence suggests that these ions are sequestered into the vacuole by heavy metal/H (+) exchanger mechanisms. Heavy metal hyperaccumulation and hypertolerance are traits shared by a small set of plants which show specialized physiological and molecular adaptations allowing them to accumulate and sequester toxic metal ions. Nicotiana tabacum was used to test its potential as a metal-accumulator in a glass house experiment...
April 28, 2017: Planta
https://www.readbyqxmd.com/read/28436146/improving-zinc-accumulation-in-barley-endosperm-using-hvmtp1-a-transition-metal-transporter
#4
Paloma Menguer, Thomas Vincent, Anthony J Miller, James K M Brown, Eva Vincze, Søren Borg, Preben Bach Holm, Dale Sanders, Dorina Podar
Zinc (Zn) is essential for all life forms, including humans. It is estimated that around two billion people are deficient in their Zn intake. Human dietary Zn intake relies heavily on plants, which in many developing countries consists mainly of cereals. The inner part of cereal grain, the endosperm, is the part that is eaten after milling but contains only a quarter of the total grain Zn. Here we present results demonstrating that endosperm Zn content can be enhanced through expression of a transporter responsible for vacuolar Zn accumulation in cereals...
April 24, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28408914/transcriptome-analysis-reveals-candidate-genes-related-to-color-fading-of-red-bartlett-pyrus-communis-l
#5
Zhigang Wang, Hong Du, Rui Zhai, Linyan Song, Fengwang Ma, Lingfei Xu
The red color of fruit is an attractive plant trait for consumers. Plants with color-faded fruit have a lower commercial value, such as 'Red Bartlett' pears (Pyrus communis L.) that have dark-red fruit in the early stages of fruit development that subsequently fade to red-green at maturity. To identify the reason for color fading, we first analyzed the anthocyanin content of peel from 'Red Bartlett,' which displays the color fading phenomenon, and 'Starkrimson,' which has no color fading. Results showed that the anthocyanin content of 'Red Bartlett' peel decreased significantly late in fruit development, while in 'Starkrimson' there was no significant decrease...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28369468/patterns-of-stress-response-and-tolerance-based-on-transcriptome-profiling-of-rice-crown-tissue-under-zinc-deficiency
#6
Amrit K Nanda, Vincent Pujol, Matthias Wissuwa
Zinc (Zn) deficiency is the most prevalent micronutrient disorder in rice and leads to delayed development and decreased yield. Several studies have investigated how rice plants respond to Zn deficiency and examined the differences between Zn-efficient (ZE) and Zn-inefficient (ZI) genotypes. ZE genotypes reallocate more Zn to roots and are better at maintaining crown root development than ZI genotypes in response to Zn deficiency. However, little is known about the molecular mechanisms controlling these differences...
March 1, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28332702/the-mtp1-promoters-from-arabidopsis-halleri-reveal-cis-regulating-elements-for-the-evolution-of-metal-tolerance
#7
Elisa Fasani, Giovanni DalCorso, Claudio Varotto, Mingai Li, Giovanna Visioli, Monica Mattarozzi, Antonella Furini
In the hyperaccumulator Arabidopsis halleri, the zinc (Zn) vacuolar transporter MTP1 is a key component of hypertolerance. Because protein sequences and functions are highly conserved between A. halleri and Arabidopsis thaliana, Zn tolerance in A. halleri may reflect the constitutively higher MTP1 expression compared with A. thaliana, based on copy number expansion and different cis regulation. Three MTP1 promoters were characterized in A. halleri ecotype I16. The comparison with the A. thaliana MTP1 promoter revealed different expression profiles correlated with specific cis-acting regulatory elements...
June 2017: New Phytologist
https://www.readbyqxmd.com/read/28294107/antifungal-mechanisms-of-zno-and-ag-nanoparticles-to-sclerotinia-homoeocarpa
#8
Junli Li, Hyunkyu Sang, Huiyuan Guo, James T Popko, Lili He, Jason C White, Om Parkash Dhankher, Geunhwa Jung, Baoshan Xing
Fungicides have extensively been used to effectively combat fungal diseases on a range of plant species, but resistance to multiple active ingredients has developed in pathogens such as Sclerotinia homoeocarpa, the causal agent of dollar spot on cool-season turfgrasses. Recently, ZnO and Ag nanoparticles (NPs) have received increased attention due to their antimicrobial activities. In this study, the NPs' toxicity and mechanisms of action were investigated as alternative antifungal agents against S. homoeocarpa isolates that varied in their resistance to demethylation inhibitor (DMI) fungicides...
April 18, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28293806/morpho-physiological-and-transcriptome-profiling-reveal-novel-zinc-deficiency-responsive-genes-in-rice
#9
Tirthankar Bandyopadhyay, Poonam Mehra, Suboot Hairat, Jitender Giri
Intensive farming has depleted the soil zinc (Zn) availability resulting in decreased crop productivity. Here, we attempt to understand the Zn deficiency response in rice through temporal transcriptome analysis. For this, rice seedlings were raised under Zn-deficient conditions up to 4 weeks followed by Zn re-supply for 3 days. Zn-deficient plants developed characteristic deficiency symptoms such as leaf bronzing, decrease in biomass, total chlorophyll, PSII efficiency, decreased carbonic anhydrase activity and increased ROS production...
March 14, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28273516/2-d-clinorotation-alters-the-uptake-of-some-nutrients-in-arabidopsis-thaliana
#10
Ellen Polinski, Oliver Schueler, Lars Krause, Monika A Wimmer, Ruth Hemmersbach, Heiner E Goldbach
Future long-term spaceflight missions rely on bioregenerative life support systems (BLSS) in order to provide the required resources for crew survival. Higher plants provide an essential part since they supply food and oxygen and recycle carbon dioxide. There are indications that under space conditions plants might be inefficient regarding the uptake, transport and distribution of nutrients, which in turn affects growth and metabolism. Therefore, Arabidopsis thaliana (Col-0) seeds were germinated and grown for five days under fast clinorotation (2-D clinostat, 60rpm) in order to simulate microgravity...
May 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28265871/distribution-and-mobility-of-lead-pb-copper-cu-zinc-zn-and-antimony-sb-from-ammunition-residues-on-shooting-ranges-for-small-arms-located-on-mires
#11
Espen Mariussen, Ida Vaa Johnsen, Arnljot Einride Strømseng
An environmental survey was performed on shooting ranges for small arms located on minerotrophic mires. The highest mean concentrations of Pb (13 g/kg), Cu (5.2 g/kg), Zn (1.1 g/kg), and Sb (0.83 g/kg) in the top soil were from a range located on a poor minerotrophic and acidic mire. This range had also the highest concentrations of Pb, Cu, Zn, and Sb in discharge water (0.18 mg/L Pb, 0.42 mg/L Cu, 0.63 mg/L Zn, and 65 μg/L Sb) and subsurface soil water (2.5 mg/L Pb, 0.9 mg/L Cu, 1.6 mg/L Zn, and 0...
March 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28150142/genome-wide-exploration-of-metal-tolerance-protein-mtp-genes-in-common-wheat-triticum-aestivum-insights-into-metal-homeostasis-and-biofortification
#12
Recep Vatansever, Ertugrul Filiz, Seckin Eroglu
Metal transport process in plants is a determinant of quality and quantity of the harvest. Although it is among the most important of staple crops, knowledge about genes that encode for membrane-bound metal transporters is scarce in wheat. Metal tolerance proteins (MTPs) are involved in trace metal homeostasis at the sub-cellular level, usually by providing metal efflux out of the cytosol. Here, by using various bioinformatics approaches, genes that encode for MTPs in the hexaploid wheat genome (Triticum aestivum, abbreviated as Ta) were identified and characterized...
February 1, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28144860/effect-of-the-combined-addition-of-zn-and-pb-on-partitioning-in-sediments-and-their-accumulation-by-the-emergent-macrophyte-schoenoplectus-californicus
#13
Silvana Arreghini, Laura de Cabo, Roberto Serafini, Alicia Fabrizio de Iorio
Wetlands usually provide a natural mechanism that diminishes the transport of toxic compounds to other compartments of the ecosystem by immobilization and accumulation in belowground tissues and/or soil. This study was conducted to assess the ability of Schoenoplectus californicus growing in natural marsh sediments, with zinc and lead addition, to tolerate and accumulate these metals, taking account of the metal distribution in the sediment fractions. The Zn and Pb were mainly found in available (exchangeable) and potentially available (bound to organic matter) forms, respectively...
January 31, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28138761/synergistic-effects-between-si-hemicellulose-matrix-ligands-and-zn-ions-in-inhibiting-cd-ion-uptake-in-rice-oryza-sativa-cells
#14
Jie Ma, Xiuqing Zhang, Lijun Wang
Our study demonstrated that Zn alleviated Cd toxicity in the presence of Si in the cell walls by Zn (2+) binding to ligands through the formation of the [Si-hemicellulose matrix]Zn complexes that restrict the uptake of Cd. The plant cell wall exhibits preferential sites for the accumulation of metals at toxic concentrations. Through modification of wall polysaccharide components, elements, such as silicon (Si) and zinc (Zn), may play active roles in alleviating the toxicity of heavy metals, including cadmium (Cd)...
May 2017: Planta
https://www.readbyqxmd.com/read/28052433/diverse-functions-of-multidrug-and-toxin-extrusion-mate-transporters-in-citric-acid-efflux-and-metal-homeostasis-in-medicago-truncatula
#15
Junjie Wang, Qiuqiang Hou, Penghui Li, Lina Yang, Xuecheng Sun, Vagner A Benedito, Jiangqi Wen, Beibei Chen, Kirankumar S Mysore, Jian Zhao
The multidrug and toxin extrusion (MATE) transporter family comprises 70 members in the Medicago truncatula genome, and they play seemingly important, yet mostly uncharacterized, physiological functions. Here, we employed bioinformatics and molecular genetics to identify and characterize MATE transporters involved in citric acid export, Al(3+) tolerance and Fe translocation. MtMATE69 is a citric acid transporter induced by Fe-deficiency. Overexpression of MtMATE69 in hairy roots altered Fe homeostasis and hormone levels under Fe-deficient or Fe-oversupplied conditions...
January 4, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28039858/arabidopsis-stress-associated-protein-9-mediates-biotic-and-abiotic-stress-responsive-aba-signaling-via-the-proteasome-pathway
#16
Miyoung Kang, Seonghee Lee, Haggag Abdelmageed, Angelika Reichert, Hee-Kyung Lee, Mohamed Fokar, Kirankumar S Mysore, Randy D Allen
Arabidopsis thaliana Stress Associated Protein 9 (AtSAP9) is a member of the A20/AN1 zinc finger protein family known to play important roles in plant stress responses and in the mammalian immune response. Although SAPs of several plant species were shown to be involved in abiotic stress responses, the underlying molecular mechanisms are largely unknown, and little is known about the involvement of SAPs in plant disease responses. Expression of SAP9 in Arabidopsis is up-regulated in response to dehydration, cold, salinity and abscisic acid (ABA), as well as pathogen infection...
December 31, 2016: Plant, Cell & Environment
https://www.readbyqxmd.com/read/27992770/zinc-stress-affects-ionome-and-metabolome-in-tea-plants
#17
Yinfei Zhang, Yu Wang, Zhaotang Ding, Hui Wang, Lubin Song, Sisi Jia, Dexin Ma
The research of physiological responses to Zn stress in plants has been extensively studied. However, the ionomics and metabolomics responses of plants to Zn stress remain largely unknown. In present study, the nutrient elements were identified involved in ion homeostasis and metabolomics changes related to Zn deficiency or excess in tea plants. Nutrient element analysis demonstrated that the concentrations of Zn affected the ion-uptake in roots and the nutrient element transportation to leaves, leading to the different distribution of P, S, Al, Ca, Fe and Cu in the tea leaves or roots...
February 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27931000/thorium-impact-on-tobacco-root-transcriptome
#18
Kateřina Mazari, Přemysl Landa, Sylva Přerostová, Karel Müller, Radomíra Vaňková, Petr Soudek, Tomáš Vaněk
Thorium is natural actinide metal with potential use in nuclear energetics. Contamination by thorium, originated from mining activities or spills, represents environmental risk due to its radioactivity and chemical toxicity. A promising approach for cleaning of contaminated areas is phytoremediation, which need to be based, however, on detail understanding of the thorium effects on plants. In this study we investigated transcriptomic response of tobacco roots exposed to 200μM thorium for one week. Thorium application resulted in up-regulation of 152 and down-regulation of 100 genes (p-value <0...
March 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27888434/a-novel-heavy-metal-atpase-peptide-from-prosopis-juliflora-is-involved-in-metal-uptake-in-yeast-and-tobacco
#19
Nisha S Keeran, G Ganesan, Ajay K Parida
Heavy metal pollution of agricultural soils is one of the most severe ecological problems in the world. Prosopis juliflora, a phreatophytic tree species, grows well in heavy metal laden industrial sites and is known to accumulate heavy metals. Heavy Metal ATPases (HMAs) are ATP driven heavy metal pumps that translocate heavy metals across biological membranes thus helping the plant in heavy metal tolerance and phytoremediation. In the present study we have isolated and characterized a novel 28.9 kDa heavy metal ATPase peptide (PjHMT) from P...
November 25, 2016: Transgenic Research
https://www.readbyqxmd.com/read/27880006/impairing-both-hma4-homeologs-is-required-for-cadmium-reduction-in-tobacco
#20
Verena Liedschulte, Hélène Laparra, James Nicolas Duncan Battey, Joanne Deborah Schwaar, Hervé Broye, Régis Mark, Markus Klein, Simon Goepfert, Lucien Bovet
In tobacco, the heavy metal P1B-ATPases HMA4.1 and HMA4.2 function in root-to-shoot zinc and cadmium transport. We present greenhouse and field data that dissect the possibilities to impact the two homeologous genes in order to define the best strategy for leaf cadmium reduction. In a first step, both genes were silenced using an RNAi approach leading to >90% reduction of leaf cadmium content. To modulate HMA4 function more precisely, mutant HMA4.1 and HMA4.2 alleles of a Targeting Induced Local Lesions IN Genomes (TILLING) population were combined...
November 23, 2016: Plant, Cell & Environment
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