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gold uptake and tolerance in arabidopsis

NIP1;2 is a plasma membrane-localized transporter ...

of nanoparticle uptake by plants [19,23]. Gold Uptake at the Genetic Level Several studies have investigated the binding of various states of gold to root membranes [17,24], but at the genetic level, the mechanism for gold uptake remains unclear. In Arabidopsis, heavy metal ATPases (HMAs), which translocate ions across cell or

Magnesium uptake characteristics in Arabidopsis revealed ...

For example, the maize PIP2 aquaporin MzPIP2;1was involved in water uptake and transportation and improved drought and salinity tolerance of the transgenic Arabidopsis [14]. Overexpression of barley aquaporin gene HvPIP2;5 in yeast and Arabidopsis confers salinity and osmotic stress tolerance [15].

Platinum uptake, distribution and toxicity in Arabidopsis ...

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 ...

Thioarsenate Toxicity and Tolerance in the Model System ...

Role of Fe-responsive genes in bioreduction and transport of ionic gold to roots of Arabidopsis thaliana during synthesis of gold nanoparticles Article in Plant Physiology and Biochemistry 84C:189 ...

Nanoparticle Uptake in Plants: Gold Nanomaterial Localized ...

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 ...

Polyploids Exhibit Higher Potassium Uptake and Salinity ...

The Brassica juncea BjCdR15, an ortholog of Arabidopsis TGA3, is a regulator of cadmium uptake, transport and accumulation in shoots and confers cadmium tolerance in transgenic plants

Functional Characterization of Date Palm Aquaporin Gene ...

Abstract. Magnesium (Mg 2+) absorption and the mechanism regulating its activity have not been clarified yet.To address these issues, it is necessary to reveal the characteristics of Mg 2+ uptake in roots. Therefore, we first investigated the Mg 2+ uptake characteristics in roots of 1-week-old Arabidopsis plants using 28 Mg. The Mg 2+ uptake system in roots was up-regulated within 1 h in ...

Exploring ammonium tolerance in a large panel of ...

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 ...

Gold uptake and tolerance in Arabidopsis - CORE

Uptake of 109 Cd and 65 Zn were up-regulated, respectively, by low iron (Fe) or Zn status. A. halleri was much less tolerant to Cd than to Zn. • We conclude that A. halleri is able to hyperaccumulate Cd partly, at least, through the Zn pathway, but the mechanisms responsible for cellular Zn tolerance …

Cadmium Uptake, Translocation, and Tolerance in AHA1OX ...

Summary • 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.

Assessing Tolerance to Heavy-Metal Stress in Arabidopsis ...

Uptake of 109 Cd and 65 Zn were up-regulated, respectively, by low iron (Fe) or Zn status. A. halleri was much less tolerant to Cd than to Zn. • We conclude that A. halleri is able to hyperaccumulate Cd partly, at least, through the Zn pathway, but the mechanisms responsible for cellular Zn tolerance …

Gold uptake and tolerance in Arabidopsis - White Rose ...

Chapter 1 - Heavy Metal Tolerance in Arabidopsis thaliana Chapter in Advances in Botanical Research 60:1-49 · December 2011 with 97 Reads DOI: 10.1016/B978-0-12-385851-1.00001-9

Gold uptake and tolerance in Arabidopsis - CORE Reader

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.

Exploring ammonium tolerance in a large panel of ...

In this study an attempt was made to evaluate Pt(II) uptake, distribution and toxicity in Arabidopsis thaliana L. plants. Arabidopsis thaliana plants were hydroponically grown with increasing Pt(II) concentrations in the range of 0.025–100 µM. Pt(II) was taken up by …

NIP1;2 is a plasma membrane-localized transporter ...

Overall, total GS activity does not seem to be crucial for ammonium tolerance in Arabidopsis; however, GS1 could have an important role when ammonium is supplied as the N source. Moreover, out of the five genes encoding GS1 in Arabidopsis GS1;2 is the most highly expressed in leaves and it is induced by ammonium (Lothier et al., 2011).

Cadmium uptake, translocation and tolerance in the ...

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 ...

RD20, a Stress-Inducible Caleosin, Participates in ...

WRKY6 Transcription Factor Restricts Arsenate Uptake and Transposon Activation in Arabidopsis. Gabriel Castrillo, ... tolerance. The Arabidopsis thaliana PHOSPHATE TRANSPORTER TRAFFIC FACILITATOR1 mutant, ... WRKY6 Transcription Factor Restricts Arsenate Uptake and Transposon Activation in Arabidopsis.

Cold-Induced Freezing Tolerance in Arabidopsis | Plant ...

In Arabidopsis, the root organic acid exudation-based Al exclusion mechanism has been well characterized; however, no evidence for an internal Al tolerance mechanism has been reported. Here we identify NIP1;2 as an Al-malate transporter involved in Al removal from root cell walls and root-to …

Drought tolerance - Wikipedia

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.

Polyploids Exhibit Higher Potassium Uptake and Salinity ...

Overall, total GS activity does not seem to be crucial for ammonium tolerance in Arabidopsis; however, GS1 could have an important role when ammonium is supplied as the N source. Moreover, out of the five genes encoding GS1 in Arabidopsis GS1;2 is the most highly expressed in leaves and it is induced by ammonium (Lothier et al., 2011).

The Brassica juncea BjCdR15, an ortholog of Arabidopsis ...

Uptake and Salinity Tolerance in Arabidopsis Dai-Yin Chao,1 Brian Dilkes, 2Hongbing Luo, Alex Douglas,1 Elena Yakubova,2 Brett Lahner,2 David E. Salt1* Genome duplication (or polyploidization) has occurred throughout plant evolutionary history and is thought to have driven the adaptive radiation of plants. We found that the cytotype of

The CTR/COPT-dependent copper uptake and SPL7-dependent ...

Thioarsenates form from arsenite under sulfate-reducing conditions, e.g., in rice paddy soils, and are structural analogues of arsenate. Even though rice is one of the most important sources of human arsenic intake, nothing is published about uptake, toxicity, or tolerance of thioarsenates in plants. Experiments using the model system Arabidopsis thaliana showed that monothioarsenate is less ...

An Assay to Test Manganese Tolerance in Arabidopsis

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.

Role of Fe-responsive genes in bioreduction and transport ...

Role of Fe-responsive genes in bioreduction and transport of ionic gold to roots of Arabidopsis thaliana during synthesis of gold nanoparticles. ... A. TaylorGold Uptake and Tolerance in Arabidopsis. University of York (2011) Google Scholar. Vert et al., 2009.

Cadmium uptake, translocation and tolerance in the ...

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NIP1;2 is a plasma membrane-localized transporter ...

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.

Investigating the Toxicity, Uptake, Nanoparticle Formation ...

Ca2+ is important for plant growth and development as a nutrient and a second messenger. However, the molecular nature and roles of Ca2+-permeable channels or transporters involved in Ca2+ uptake in roots are largely unknown. We recently identified a candidate for the Ca2+-permeable mechanosensitive channel in Arabidopsis ( Arabidopsis thaliana ), named MCA1.

Chapter 1 - Heavy Metal Tolerance in Arabidopsis thaliana ...

Changes in the physiology of plant leaves are correlated with enhanced freezing tolerance and include accumulation of compatible solutes, changes in membrane composition and behavior, and altered gene expression. Some of these changes are required for enhanced freezing tolerance, whereas others are merely consequences of low temperature. In this study we demonstrated that a combination of cold ...

TaNAC29, a NAC transcription factor from wheat, enhances ...

Polyploids Exhibit Higher Potassium Uptake and Salinity Tolerance in Arabidopsis. By Dai-Yin Chao, Brian Dilkes, Hongbing Luo, Alex Douglas, Elena Yakubova, Brett Lahner, David E. Salt. Science 09 Aug 2013: 658-659 . Certain thale cress plants collected in the wild contain a duplicated genome and can cope with salty soil.

Cadmium uptake, translocation and tolerance in the ...

May 09, 2017· Aluminum (Al) toxicity is a major constraint for crops grown on acid soils. Various plant species have adopted an Al exclusion/avoidance mechanism and/or internal tolerance mechanisms to ameliorate Al toxicity. In Arabidopsis, the root organic acid exudation-based Al exclusion mechanism has been well characterized; however, no evidence for an internal Al tolerance mechanism has been …

Cadmium uptake, translocation and tolerance in the ...

Manganese (Mn) is an essential nutrient required for the catalytic or regulatory function of several cellular enzymes. However, excessive Mn concentrations in plant tissues are toxic to plant cells as they negatively affect enzymatic activities, lead to oxidative stress and disturb the uptake and distribution of other essential mineral elements (Ca, P, Mg or Fe).

MCA1 and MCA2 That Mediate Ca2+ Uptake Have Distinct and ...

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 ...

Arabidopsis thaliana NIP7;1 is involved in tissue arsenic ...

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, …

Role of Fe-responsive genes in bioreduction and transport ...

The aims of this study were therefore to characterise gold uptake and nanoparticle formation in the model plant species Arabidopsis thaliana and subsequently investigate the transcriptional response to gold to identify mechanisms of uptake and tolerance. A number of approaches were used to investigate the gold tolerance and uptake by Arabidopsis.

Genetic Analysis of Salt Tolerance in Arabidopsis ...

The CTR/COPT-dependent copper uptake and SPL7-dependent copper deficiency responses are required for basal cadmium tolerance in A. thaliana. ... These events are controlled by the transcription factor SPL7 in Arabidopsis thaliana. Cadmium (Cd), on the other hand, is a non-essential and a highly toxic metal that interferes with homeostasis of ...

Investigating the Toxicity, Uptake, Nanoparticle Formation ...

79 Deciphering the steps in plant heavy-metal stress tolerance and identifying the 80 genetic determinants mediating heavy-metal uptake, translocation, chelation and 81 detoxification largely benefit from molecular genetic studies in the plant model 82 Arabidopsis thaliana. In the presence of excessive amounts of a given heavy metal,