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Gold Uptake And Tolerance In Arabidopsis

Gold uptake and tolerance in Arabidopsis

Gold uptake and tolerance in Arabidopsis . By Andrew Taylor. Download PDF (25 ) Abstract. Gold is a precious metal with a variety of industrial uses. The gold mining process is often incomplete, and discarded mine tailings contain quantities of gold uneconomical for conventional extraction.

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Nanoparticle Uptake in Plants: Gold Nanomaterial Localized .

Terrestrial plants can internalize and translocate nanoparticles (NPs). However, direct evidence for the processes driving the NP uptake and distribution in plants is scarce at the cellular level. Here, NP-root interactions were investigated after 10 days of exposure of Arabidopsis thaliana to 10 mg·L–1 of negatively or positively charged gold NPs (∼12 nm) in gels.

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A Nanobiotechnology Approach to Study Plant Physiology and .

Plant nanobiotechnology is an emerging field of science that aims to utilize nanomaterials for studying plant organelles, tissues, and whole organisms and provide them with augmented functions. The Giraldo Lab works at the interface of plant physiology and nanotechnology to create new tools for studying how plants function and enhance plant productivity.

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Vesicular trafficking and salinity responses in plants .

IKA‐resistant uptake of charged gold nanoparticles has been documented in BY‐2 protoplasts and tobacco pollen tubes 11, . AtSFT12, has been shown to confer salt tolerance in Arabidopsis 58. Although "overexpression" of these TGN/Golgi‐resident SNAREs confers salt tolerance to plants, "deletion" of two of the vacuole .

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Investigating the Toxicity, Uptake, Nanoparticle Formation .

Gold Uptake at the Genetic Level. Several studies have investigated the binding of various states of gold to root membranes,, but at the genetic level, the mechanism for gold uptake remains unclear.In Arabidopsis, heavy metal ATPases (HMAs), which translocate ions across cell or organelle membranes, have been implicated in the transport of copper and silver and these are elements that share .

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RD20, a Stress-Inducible Caleosin, Participates in .

Yann Aubert, Denis Vile, Marjorie Pervent, Didier Aldon, Benoit Ranty, Thierry Simonneau, Alain Vavasseur, Jean-Philippe Galaud, RD20, a Stress-Inducible Caleosin, Participates in Stomatal Control, Transpiration and Drought Tolerance in Arabidopsis thaliana, Plant and Cell Physiology, Volume 51, Issue 12, December 2010, Pages 1975–1987, https .

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Understanding and Improving Salt Tolerance in Plants

A high K /Na ratio in the cytosol is essential for HAL1 and HAL3 regulate K uptake and Na efflux. normal cellular functions of plants. Na competes with Overexpression of the Arabidopsis HAL3a gene en-K uptake through Na –K cotransporters, and may hances salt tolerance of transgenic Arabidopsis (Es-

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Full text of "Investigating the Toxicity, Uptake .

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Gold Uptake And Tolerance In Arabidopsis

Gold uptake and tolerance in Arabidopsis - White Rose . Gold is a precious metal with a variety of industrial uses The gold mining process is often incomplete, and discarded mine tailings contain quantities of gold uneconomical for conventional extraction Previous work has indicated the potential to use plants for gold phytoextraction from these sites Additionally, it has been demonstrated that

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Mechanisms of Salinity Tolerance | Annual Review of Plant .

Jun 02, 2008 · Plant growth responds to salinity in two phases: a rapid, osmotic phase that inhibits growth of young leaves, and a slower, ionic phase that accelerates senescence of mature leaves. Plant adaptations to salinity are of three distinct types: osmotic stress tolerance, Na + or Cl − exclusion, and the tolerance of tissue to accumulated Na + or Cl

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Full text of "Investigating the Toxicity, Uptake .

Search the history of over 373 billion web pages on the Internet.

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Investigating the Toxicity, Uptake, Nanoparticle Formation .

Gold Uptake at the Genetic Level. Several studies have investigated the binding of various states of gold to root membranes,, but at the genetic level, the mechanism for gold uptake remains unclear.In Arabidopsis, heavy metal ATPases (HMAs), which translocate ions across cell or organelle membranes, have been implicated in the transport of copper and silver and these are elements that share .

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Arabidopsis thaliana NIP7;1 is involved in tissue arsenic .

The Arabidopsis aquaglyceroporin NIP7;1 is involved in uptake and tolerance to the trivalent arsenic species arsenite. Here, we show that NIP7;1 is also involved in the response to pentavalent arsenate. Loss of function of NIP7;1 improved tolerance to arsenate and reduced arsenic levels in both the phloem and xylem, resulting in altered arsenic distribution between tissues.

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Cadmium uptake, translocation and tolerance in the .

Sep 01, 2006 · Arabidopsis halleri is a well‐known zinc (Zn) hyperaccumulator, but its status as a cadmium (Cd) hyperaccumulator is less certain. Here, we investigated whether A. halleri can hyperaccumulate Cd and whether Cd is transported via the Zn pathway.. Growth and Cd and Zn uptake were determined in hydroponic experiments with different Cd and Zn concentrations.

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Gold uptake and tolerance in Arabidopsis - CORE Reader

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Potassium Retention under Salt Stress Is Associated with .

Arabidopsis salinity tolerance depended more on K + contents. In order to investigate whether the change of Na + and K + contents is related to the underlying salinity tolerance in the selected Arabidopsis accessions, the amount of total plant Na + and K + contents were measured.

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Round-shape gold nanoparticles: effect of particle size .

Apr 10, 2018 · Nowadays, due to a wide range of applications of nanoparticles (NPs) in many industrial areas, accumulations of those entities in environment pose a great risk. Owing to their inertness, noble metal NPs may remain in contaminated soils nearly unchanged for long time. Within this context, size-, shape-, and concentration-dependent uptake of particles by plants belongs to unexplored area.

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Populus euphratica APYRASE2 Enhances Cold Tolerance by .

Apyrase and extracellular ATP play crucial roles in mediating plant growth and defense responses. In the cold-tolerant poplar, Populus euphratica, low temperatures up-regulate APYRASE2 (PeAPY2) expression in callus cells. We investigated the biochemical characteristics of PeAPY2 and its role in cold tolerance. We found that PeAPY2 predominantly localized to the plasma membrane, but punctate .

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Cadmium Uptake, Translocation, and Tolerance in AHA1OX .

Mar 16, 2010 · Abstract. Information on cadmium (Cd) uptake and transport is essential to understand better the physiology of Cd tolerance in plants. In this study, Cd uptake, translocation, and tolerance were investigated in AHA1 (Arabidopsis plasma membrane H +-ATPase gene) overexpressed plants.Exposed to 10 µM CdCl 2, AHA1OX showed a higher root elongation, accumulated more Cd, .

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Potassium Retention under Salt Stress Is Associated with .

Arabidopsis salinity tolerance depended more on K + contents. In order to investigate whether the change of Na + and K + contents is related to the underlying salinity tolerance in the selected Arabidopsis accessions, the amount of total plant Na + and K + contents were measured.

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Nanomaterials | Free Full-Text | Reproductive Toxicity and .

Concerns about nanotechnology have prompted studies on how the release of these engineered nanoparticles impact our environment. Herein, the impact of 20 nm silver nanoparticles (AgNPs) on the life history traits of Arabidopsis thaliana was studied in both above- and below-ground parts, at macroscopic and microscopic scales. Both gross phenotypes (in contrast to microscopic phenotypes) .

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Brassica oleracea MATE Encodes a Citrate Transporter and .

Al tolerance was determined by measuring relative root elongation according to Liang et al. (2013). In brief, seeds of wild-type Arabidopsis and two transgenic lines were surface sterilized, stratified at 4°C for 3 days, and then germinated for 4 days on MS medium.

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NIP1;2 is a plasma membrane-localized transporter .

Aluminum (Al) toxicity is a major constraint for crop yields on acid soils worldwide (1 –4).To cope with Al stress, plants have adopted several resistance mechanisms, including (i) an Al exclusion mechanism in which plants release organic acids (OAs) from the root apex into the rhizosphere to chelate toxic Al 3+ ions and prevent them from entering into root cells, and (ii) an internal Al .

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NIP1;2 is a plasma membrane-localized transporter .

Taken together, these findings reveal a critical linkage between the previously identified Al exclusion mechanism based on root malate release and an internal Al tolerance mechanism identified here through the coordinated function of NIP1;2 and ALMT1, which is required for Al removal from the root cell wall, root-to-shoot Al translocation, and .

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Cadmium uptake, translocation and tolerance in the .

Arabidopsis halleri is a well‐known zinc (Zn) hyperaccumulator, but its status as a cadmium (Cd) hyperaccumulator is less certain. Here, we investigated whether A. halleri can hyperaccumulate Cd and whether Cd is transported via the Zn pathway.. Growth and Cd and Zn uptake were determined in hydroponic experiments with different Cd and Zn concentrations.

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Increased tolerance to salt stress in the phosphate .

Jul 12, 2011 · Abstract. High salinity is an environmental factor that inhibits plant growth and development, leading to large losses in crop yields. We report here that mutations in SIZ1 or PHO2, which cause more accumulation of phosphate compared with the wild type, enhance tolerance to salt stress.The siz1 and pho2 mutations reduce the uptake and accumulation of Na +.

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Drought tolerance - Wikipedia

Drought tolerance is the ability to which a plant maintains its biomass production during arid or drought conditions. Some plants are naturally adapted to dry conditions, surviving with protection mechanisms such as desiccation tolerance, detoxification, or repair of xylem embolism. Other plants, specifically crops like corn, wheat, and rice, have become increasingly tolerant to drought with .

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Brassica oleracea MATE Encodes a Citrate Transporter and .

Al tolerance was determined by measuring relative root elongation according to Liang et al. (2013). In brief, seeds of wild-type Arabidopsis and two transgenic lines were surface sterilized, stratified at 4°C for 3 days, and then germinated for 4 days on MS medium.

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Nanoparticle Uptake in Plants: Gold Nanomaterial Localized .

Terrestrial plants can internalize and translocate nanoparticles (NPs). However, direct evidence for the processes driving the NP uptake and distribution in plants is scarce at the cellular level. Here, NP-root interactions were investigated after 10 days of exposure of Arabidopsis thaliana to 10 mg·L–1 of negatively or positively charged gold NPs (∼12 nm) in gels.

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Genetic Analysis of Salt Tolerance in Arabidopsis .

A large genetic screen for sos (for salt overly sensitive) mutants was performed in an attempt to isolate mutations in any gene with an sos phenotype. Our search yielded 28 new alleles of sos1, nine mutant alleles of a newly identified locus, SOS2, and one allele of a third salt tolerance locus, SOS3. The sos2 mutations, which are recessive, were mapped to the lower arm of chromosome V, ~2.3 .

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