Uptake of metal ions. Numerous families of metal ion transporters have been identified in Arabidopsis.These have been extensively reviewed by other authors (Fox and Gueriont, 1998; Clemens, 2001; Maser et al., 2001) and are discussed further below (see Table 1).Some members of these gene families have been identified through the complementation of yeast mutants, while many others have …

Oxidized gold was subsequently found in roots and shoots of these plants, but gold nanoparticles (reduced gold) were only observed in the root tissues. We used a microarray-based study to monitor the expression of candidate genes involved in metal uptake and transport in Arabidopsis upon gold exposure.

Zinc tolerance and uptake by Arabidopsis halleri ssp. gemmifera grown in nutrient solution. Md. Abul Kashem 1, Bal Ram Singh 2, Hiroshi 3, Reiko Sugawara 3, Nobuyuki Kitajima 3, Toshihito Kondo 3 & Shigenao Kawai 1 Environmental Science and Pollution Research volume 17, pages 1174–1176 (2010)Cite this article

The pht1;1 pht1;4 double mutant has a notable As(V) tolerance phenotype, indicating that these two members of the Pi transporter family contribute to As(V) uptake in Arabidopsis (Shin et al., 2004). Some species restrict phosphate uptake as an adaptive response in As(V) tolerance (Meharg and Macnair, 1990; Murota et al., 2012).

However, the responses are complex, and roles of cytokinin and cytokinin signalling pathways in cold tolerance are unclear. Cold-induced attenuation of cytokinin signalling seems to impair plants' tolerance of low temperature because the exogenous application of cytokinin significantly promotes cold tolerance in Arabidopsis [129,130,131].

demonstrated that in Arabidopsis uptake of [14C]-isoxaben is not affected by the addition of either potassium cyanide or dinitrophenol (data not shown). These data suggest that uptake is entirely passive without an active transport component. Tolerance by Agrostis, measured as the effect of isox aben on glucose incorporation into cellulose, is ...

Increased tolerance of ars mutants to arsenate. (a) ars1 and wild-type seeds were plated on a single Petri dish containing 1 m m arsenate and photographed under a microscope after 5 days at 20°C. (b) Seeds from the three ars mutants and wild-type plants were germinated on Petri dishes containing the indicated levels of arsenate and assayed after 5 days for the emergence of green …

We have studied the physiological and genetic responses of Arabidopsis thaliana L. (Arabidopsis) to gold. The root lengths of Arabidopsis seedlings grown on nutrient agar plates containing 100 mg/L gold were reduced by 75%. Oxidized gold was subsequently found in roots and shoots of these plants, but gold nanoparticles (reduced gold) were only observed in the root tissues.

Next, we tested whether PeAPY2 could stimulate exocytosis. We monitored FM4-64 uptake and trafficking in the presence of BFA, which inhibits intracellular vesicular trafficking and peptide secretion (Lam et al., 2009; Feraru et al., 2012). We stained Arabidopsis roots with FM4-64 (10 min) prior to BFA treatment (50 μ m for 1.5 h).

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 co

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

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.

NIP1;2 is a plasma membrane-localized transporter mediating aluminum uptake, translocation, and tolerance in Arabidopsis Yuqi Wanga, Ruihong Lia,b, Demou Lia,c, Xiaomin Jia a, Dangwei Zhoua,d, Jianyong Lia,e, Sangbom M. Lyi, Siyu Houa,f, Yulan Huanga,g, Leon V. Kochiana,h, and Jiping Liua,1 aRobert W. Holley Center for Agriculture and Health, US Department of Agriculture, Agricultural ...

Taylor and coworkers have shown the effect of gold/gold nanoparticles on the physiological and genetic responses of Arabidopsis thaliana that its root length was reduced by 75 % at 100 mg L −1 concentration. Gold ions were detected in roots and shoots, but gold nanoparticles were absorbed only in the root tissues of the plant.

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a two orders of magnitude decrease in the affinities for both K+ Zhu J K, Liu J P and Xiong L M 1998 Genetic analysis of salt and Na+ of the Na+ dependent K+ uptake system KtrAB from tolerance in Arabidopsis: evidence for a critical role of potassium Vibrio alginolyticus.

Salinity and sodicity could be affecting your crops without you even knowing! Between 25 – 35% of worldwide agricultural lands are affected by these two abiotic stresses, which are also probably the two most difficult to manage. However, there are 7 tips that can help you counteract the negative effects of salinity and sodicity. Continue […]

Li, J. et al. Defense-related transcription factors WRKY70 and WRKY54 modulate osmotic stress tolerance by regulating stomatal aperture in Arabidopsis. New Phytol. 200, 457–472 (2013).

The number of examples of exclusion or reduced uptake mechanisms in higher plants is quite limited. The clearest example of reduced uptake as an adapted tolerance mechanism is in relation to arsenic toxicity (Meharg and Macnair, 1990, 1992). In Holcus lanatus roots, phosphate and arsenate appear to be taken up by the same systems. However, an ...

Nanoparticle Uptake in Plants: Gold Nanomaterial Localized in Roots of Arabidopsis thaliana by X-Ray Computed Nanotomography and Hyperspectral Imaging. Environmental Science and Technology, American Chemical Society, 2017, 51, pp.8692-8691. ￿10.1021/acs.est.7b01133￿. ￿hal-01566237￿

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.

In an anal- Polyploids Exhibit Higher Potassium ysis of the elemental composition of leaves from a set of 349 Arabidopsis thaliana acces- Uptake and Salinity Tolerance sions (2), the autotetraploid accession Wa-1 (from Warsaw, Poland) had the highest con- in Arabidopsis centration of leaf potassium (K) (Fig. 1A) and the K analog rubidium (Rb ...

The increasing demand for precious metals such as palladium and gold for industrial applications has led to the exploration of sustainable environmental-friendly technologies to capture and recycle these metals from mine wastes. Phytomining is an emerging technology that makes use of the ability of plants to extract and accumulate metals from soil and water.

Physiological and Molecular Dissection of Salinity Tolerance in Arabidopsis and Maize and Nitrogen Uptake in Wheat Suman Lamichhane Abstract (Academic) The PROTEOLYSIS 6 (PRT6) branch of the N-end rule pathway is a well-characterized negative regulator of flooding and low oxygen tolerance in plants. This study investigated the role of this

However, ars1 plants do show a higher rate of phosphate uptake than that shown by wild-type plants, and wild-type plants grown with an excess of phosphate show increased tolerance to arsenate. Traditional models of arsenate tolerance in plants are based on the suppression of phosphate uptake pathways and consequently on the reduced uptake of ...

A R2R3-type MYB transcription factor gene from soybean, GmMYB12, is involved in flavonoids accumulation and abiotic stress tolerance in transgenic Arabidopsis. 13(3)219-233 Xiaoyang Xu, Yongheng Yang, Chunxiao Liu, Yuming Sun, Ting Zhang, …

Dive into the research topics of 'Polyploids exhibit higher potassium uptake and salinity tolerance in Arabidopsis'. Together they form a unique fingerprint. Salt Tolerance Medicine & Life Sciences

(a) Boron tolerance phenotype, (b) Fresh shoot weight and, (c) root length of the Arabidopsis transgenic lines 43, 51 and 60 as compared with wild type (WT) on 0 and 2.5 mM boric acid. The values ...

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.

The aim of our study was to answer whether any positive correlation exists between K+ uptake and salt tolerance in wheat. We carried out a sand-culture experiment with salt-tolerant, DK961 (ST ...

Overexpression of RabG3e in Arabidopsis enhanced the uptake of endocytic tracer FM1-43 and significantly improved salt tolerance when compared with WT plants 49. This approach has been extended to other species: the overexpression of OsRab7 generates salt-resistant rice plants 50, and the overexpression of Rab7 gene from the halophyte Prosopis ...

Arabidopsis plants overexpressing GmbZIP110 showed a slightly greater salt tolerance compared to WT plants (Fig. 4d). This finding was consistent with the expression of OsbZIP23, which was induced by dehydration, high salt stress and exogenous ABA application 37, Improved plant stress tolerance was reported in plants over-expressing OsbZIP23 .

[62] A. Zhigang, L. Cuijie, Z. Yuangang, et al., Expression of BjMT2, a metallothionein 2 from Brassica juncea, increases copper and cadmium tolerance in Escherichia coli and Arabidopsis thaliana, but inhibits root elongation in Arabidopsis thaliana seedlings, J. Exp. Bot. 57 (2006). DOI: 10.1093/jxb/erl102

Chemicals taken up into plants may be accumulated so leading to toxic effects. Uptake and phytotoxicity of free cyanide was determined with the willow-tree transpiration test. Willow sets were grown in sand and irrigated with varying levels of cyanide (CN). Toxicity was determined by measuring transpiration. At CN concentrations below 10 mg/L, no toxic effects were observed.

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 …