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Zinc transporter plant

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https://www.readbyqxmd.com/read/28630437/phylogenetic-analysis-of-f-bzip-transcription-factors-indicates-conservation-of-the-zinc-deficiency-response-across-land-plants
#1
Pedro Humberto Castro, Grmay H Lilay, Antonio Muñoz-Mérida, Jan K Schjoerring, Herlânder Azevedo, Ana G L Assunção
Basic leucine zipper (bZIP) transcription factors control important developmental and physiological processes in plants. In Arabidopsis thaliana, the three gene F-bZIP subfamily has been associated with zinc deficiency and salt stress response. Benefiting from the present abundance of plant genomic data, we performed an evolutionary and structural characterization of plant F-bZIPs. We observed divergence during seed plant evolution, into two groups and inferred different selective pressures for each. Group 1 contains AtbZIP19 and AtbZIP23 and appears more conserved, whereas Group 2, containing AtbZIP24, is more prone to gene loss and expansion events...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28588597/protein-biochemistry-and-expression-regulation-of-cadmium-zinc-pumping-atpases-in-the-hyperaccumulator-plants-arabidopsis-halleri-and-noccaea-caerulescens
#2
Seema Mishra, Archana Mishra, Hendrik Küpper
P1B-ATPases are decisive for metal accumulation phenotypes, but mechanisms of their regulation are only partially understood. Here, we studied the Cd/Zn transporting ATPases NcHMA3 and NcHMA4 from Noccaea caerulescens as well as AhHMA3 and AhHMA4 from Arabidopsis halleri. Protein biochemistry was analyzed on HMA4 purified from roots of N. caerulescens in active state. Metal titration of NcHMA4 protein with an electrochromic dye as charge indicator suggested that HMA4 reaches maximal ATPase activity when all internal high-affinity Cd(2+) binding sites are occupied...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28586470/the-ida-like-peptides-idl6-and-idl7-are-negative-modulators-of-stress-responses-in-arabidopsis-thaliana
#3
Ane Kjersti Vie, Javad Najafi, Per Winge, Ester Cattan, Michael Wrzaczek, Jaakko Kangasjärvi, Gad Miller, Tore Brembu, Atle M Bones
Small signalling peptides have emerged as important cell to cell messengers in plant development and stress responses. However, only a few of the predicted peptides have been functionally characterized. Here, we present functional characterization of two members of the IDA-LIKE (IDL) peptide family in Arabidopsis thaliana, IDL6 and IDL7. Localization studies suggest that the peptides require a signal peptide and C-terminal processing to be correctly transported out of the cell. Both IDL6 and IDL7 appear to be unstable transcripts under post-transcriptional regulation...
June 6, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28574163/heavy-metal-atpase-3-hma3-confers-cadmium-hypertolerance-on-the-cadmium-zinc-hyperaccumulator-sedum-plumbizincicola
#4
Huan Liu, Haixia Zhao, Longhua Wu, Anna Liu, Fang-Jie Zhao, Wenzhong Xu
Cadmium (Cd) is highly toxic to most organisms, but some rare plant species can hyperaccumulate Cd in aboveground tissues without suffering from toxicity. The mechanism underlying Cd detoxification by hyperaccumulators is interesting but unclear. Here, the heavy metal ATPase 3 (SpHMA3) gene responsible for Cd detoxification was isolated from the Cd/zinc (Zn) hyperaccumulator Sedum plumbizincicola. RNA interference (RNAi)-mediated silencing and overexpression of SpHMA3 were induced to investigate its physiological functions in S...
June 2, 2017: New Phytologist
https://www.readbyqxmd.com/read/28555148/genome-wide-identification-of-orthologous-zip-genes-associated-with-zinc-and-iron-translocation-in-setaria-italica
#5
Ganesh Alagarasan, Mahima Dubey, Kumar S Aswathy, Girish Chandel
Genes in the ZIP family encode transcripts to store and transport bivalent metal micronutrient, particularly iron (Fe) and or zinc (Zn). These transcripts are important for a variety of functions involved in the developmental and physiological processes in many plant species, including most, if not all, Poaceae plant species and the model species Arabidopsis. Here, we present the report of a genome wide investigation of orthologous ZIP genes in Setaria italica and the identification of 7 single copy genes. RT-PCR shows 4 of them could be used to increase the bio-availability of zinc and iron content in grains...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28534307/acanthus-ilicifolius-l-a-promising-candidate-for-phytostabilization-of-zinc
#6
A M Shackira, Jos T Puthur, E Nabeesa Salim
The potential of a halophyte species-Acanthus ilicifolius L.-to phytostabilize zinc (Zn) grown under hydroponics culture conditions was critically evaluated in this study. The propagules after treating with ZnSO4 (4 mM) were analysed for the bioaccumulation pattern, translocation rate of Zn to the shoot, effects of Zn accumulation on organic solutes and the antioxidant defence system. It was found that most of the Zn absorbed by the plant was retained in the root (47%) and only a small portion was transported to stem (12%) and leaves (11%)...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28533812/visualization-of-zinc-dynamics-in-intact-plants-using-positron-imaging-of-commercially-available-65-zn
#7
Nobuo Suzui, Yong-Gen Yin, Satomi Ishii, Hitoshi Sekimoto, Naoki Kawachi
BACKGROUND: Positron imaging can be used to non-destructively visualize the dynamics of a positron-emitting radionuclide in vivo, and is therefore a tool for understanding the mechanisms of nutrient transport in intact plants. The transport of zinc, which is one of the most important nutrient elements for plants, has so far been visualized by positron imaging using (62)Zn (half-life: 9.2 h), which is manufactured in the limited number of facilities that have a cyclotron. In contrast, the positron-emitting radionuclide (65)Zn (half-life: 244 days) is commercially available worldwide...
2017: Plant Methods
https://www.readbyqxmd.com/read/28496135/isolated-bacillus-subtilis-strain-330-2-and-its-antagonistic-genes-identified-by-the-removing-pcr
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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...
April 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
#19
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
#20
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...
March 2017: Environmental Science and Pollution Research International
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