While studying the potential toxicity of metal nanoparticles (NPs), we realized that gold nanoparticles (AuNPs) have a growth-promoting rather than a stress-inducing effect. In this …
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A previous study showed that potassium deprivation in Arabidopsis roots stimulates ethylene production and the upregulation of genes that are involved in ethylene biosynthesis and signaling (Shin and Schachtman, 2004).To investigate the possible role of ethylene in response to low potassium, we analyzed the low K + stress sensitivity of ethylene-insensitive mutants (etr1 …
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Because previous studies has suggested that AtAAP1 and AtLHT1 might play roles in the uptake of neutral amino acids by Arabidopsis roots (Himer et al., 2006; Lee et al., 2007; Perchlik et al., 2014), we investigated whether these amino acid transporters are also involved in Hg uptake into Arabidopsis roots, given that Cys belongs to the family ...
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Polyploids exhibit higher potassium uptake and salinity tolerance in Arabidopsis Science. 2013 Aug 9;341(6146):658-9. doi: 10.1126/science.1240561. Epub 2013 Jul 25. Authors Dai-Yin Chao 1, Brian Dilkes, Hongbing Luo, Alex Douglas, Elena Yakubova, Brett Lahner, David E Salt. Affiliation 1 Institute of ...
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Studies using Arabidopsis thaliana revealed a decline in root length and total fresh weight with rising gold concentrations in the growth medium, coupled with the downregulation …
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1. Introduction. Arsenic (As) is a metalloid pollutant commonly found in the natural environment. As early as 2004, it was listed as a class I carcinogen by the International Agency for Research on Cancer [], and both natural phenomena (e.g., rock weathering, volcanic eruptions, and geothermal activity) and human activities (e.g., mining and smelting, pesticide …
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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 …
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Members of the aquaporin (AQP) family have been suggested to transport aluminum (Al) in plants; however, the Al form transported by AQPs and the roles of AQPs in Al tolerance remain elusive. Here we report that NIP1;2, a plasma membrane-localized member of the Arabidopsis nodulin 26-like intr …
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Various mechanisms and proteins involved in As uptake and detoxification have been identified in Arabidopsis (Arabidopsis thaliana) and rice, but only initial reports suggest that the ubiquitin–proteasome pathway might play an important role in regulating As uptake and tolerance in plants [26., 27., 28.].
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Loss-of-function of ZAT10 lead to increased cadmium sensitivity. To characterize the function of ZAT10 in plant Cd-tolerance, we obtained the Arabidopsis T-DNA insertional mutant zat10 (SALK_054092C) from the SALK T-DNA collection (Figure 2A; Mittler et al., 2006) and generated complementary lines expressing ZAT10pro:ZAT10 in the zat10 background. …
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Strain HYN0056 T Improves the Salt Stress Tolerance of Arabidopsis. The drought- and salt stress-signaling pathways largely share the protein components that are used to overcome such stresses (Lee and Kim 2011).Since strain HYN0056 T altered the sensitivity to drought stress in Arabidopsis, we investigated if the tolerance against salt stress could be …
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Exogenous Cys significantly promoted Hg uptake in Arabidopsis roots by upregulating the expression of the Cys transporter gene AtLHT1, resulting in increased Hg accumulation in the roots and ...
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Figure 1.Effects of exogenous Cys on the germination rate (A) and post-germination seedling growth (B) and root growth of Arabidopsis (C) under Hg stress. Germination and post-germination seedling growth were observed on MS medium supplemented with HgCl 2 (10–30 μM) with or without 50 μM Cys. Root growth was investigated after transfer of five-day-old …
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shibang / sbm gold uptake and tolerance in arabidopsis.md. dushusbm c4a532c29b code. 19:24:26 +08:00
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Chao et al. (p. 658, published online 25 July) identified accessions of the model plant Arabidopsis thaliana with naturally doubled genomes and found that the cytotype of the root, but not shoot, in these natural, as well as in artificially …
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The Zn hyperaccumulator Arabidopsis halleri has developed various adaptive mechanisms involving uptake, chelation, translocation and sequestration of Zn. In this mini review, we broadly discuss the different Zn tolerance mechanisms and then focus on controlled Zn uptake in A. halleri. Members of the ZRT/IRT-like protein (ZIP) family of metal ...
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The results measuring uptake of gold by Arabidopsis from hydroponic culture (Figure 2B and 2H) are the mean from five biological replicates ± SE. The results presented …
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The toxic metal cadmium (Cd) poses a serious threat to plant growth and human health. Populus euphratica calcium-dependent protein kinase 21 (CPK21) has previously been shown to attenuate Cd toxicity by reducing Cd accumulation, enhancing antioxidant defense and improving water balance in transgenic Arabidopsis. Here, we confirmed a protein-protein …
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Eighteen accessions of Arabidopsis thaliana were grown with low (N-) and high (N+) nitrogen supply. N uptake was monitored by feeding plants with 15N-enriched nutritive solution over 24 h. Biomass [fresh matter (FM) and dry matter (DM)], N concentration (N%), and 15N content were monitored and compu …
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Growth and Cd and Zn uptake were determined in hydropon … Arabidopsis halleri is a well-known zinc (Zn) hyperaccumulator, but its status as a cadmium (Cd) hyperaccumulator is less certain. ... Cadmium uptake, translocation and tolerance in the hyperaccumulator Arabidopsis halleri New Phytol. 2006;172(4):646-54. doi: 10.1111/j.1469-8137.2006. ...
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AKT1 (Arabidopsis K + transporter 1) has been demonstrated as an inward-rectifying K + channel in A. thaliana that mediates K + uptake into the roots [[26], [27], [28], [29]].The K + channel AKT1 is primarily expressed in the roots, particularly in mature epidermis, cortex, and endodermis, which is the prerequisite for the function of root K + uptake [26,30,31].
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NIP1;2 is a plasma membrane-localized transporter mediating aluminum uptake, translocation, and tolerance in Arabidopsis April 2017 Proceedings of the National Academy of Sciences 114(19):201618557
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These results indicate that exogenous Cys regulates the transcript levels of heavy metal chelators and antioxidative enzymes differently in a time- and organ-specific manner under Hg stress. Taken together, our study elucidates the positive functional roles of exogenous Cys in the Hg uptake and tolerance mechanisms of Arabidopsis.
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Collectively, our findings provided new insights into the dual functions of ZAT10 on Cd uptake and detoxification in plants and pointed to ZAT10 as a potential gene resource for Cd tolerance ...
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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 …
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The bait plasmid BD-AtERF13 and prey plasmid AD-AtERF6 were subsequently cotransformed into the Y2H Gold Cell yeast strain (Weidi, Shanghai, China). ... AtERF13 cannot change the Cd tolerance of Arabidopsis plants (A) The T-DNA ... ZIP11 is thought to be ZIP2-like. Considering that ZIP2 promotes Cd accumulation through Cd uptake in Arabidopsis ...
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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 CdCl2, AHA1OX showed a higher root elongation, …
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The Zn hyperaccumulator Arabidopsis halleri has developed various adaptive mechanisms involving uptake, chelation, translocation and sequestration of Zn. In this mini review, we broadly discuss the different Zn tolerance mechanisms and then focus on controlled Zn uptake in A. halleri. Members of the ZRT/IRT-like protein (ZIP) family of metal ...
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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 ).
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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 ...
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The Zn hyperaccumulator Arabidopsis halleri has developed various adaptive mechanisms involving uptake, chelation, translocation and sequestration of Zn. In this mini review, we broadly discuss the different Zn tolerance mechanisms and then focus on …
WhatsApp: +86 18221755073