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15 rezultatima
Chromium-Induced Ultrastructural Changes and Oxidative Stress in Roots of Arabidopsis thaliana.
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Chromium (Cr) is an abundant heavy metal in nature, toxic to living organisms. As it is widely used in industry and leather tanning, it may accumulate locally at high concentrations, raising concerns for human health hazards. Though Cr effects have extensively been investigated in animals and
Long-Chain Hydrocarbons (C21, C24, and C31) Released by Bacillus Sp. MH778713 Break Dormancy of Mesquite Seeds Subjected to Chromium Stress
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Volatile organic compounds (VOCs) produced by rhizobacteria have been proven to stimulate plant growth during germination and seedling stages. However, the modulating effect of bacterial volatiles on the germination of seeds subjected to heavy metal stress is scarcely studied. In this work, the
Changes in the gene expression profile of Arabidopsis thaliana under chromium stress.
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Based on previous studies and preliminary test results, 200 μM was used as the test concentration of chromium (Cr), and changes in the gene expression profile of Arabidopsis thaliana in response to 24-h treatments of Cr(III) and Cr(VI) were analyzed using the Arabidopsis ATH1 Genome Array. The
Mitigation of chromium toxicity in Arabidopsis thaliana by sulfur supplementation.
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Chromium (Cr) contamination of soil and water has become a severe threat to human health. In this study, a series of experiments were conducted to examine the ameliorative effects of Cr toxicity, by exogenous 100 μM sodium sulfate. Our team has examined the plant growth, Cr content, chlorophyll,
Phosphate relieves chromium toxicity in Arabidopsis thaliana plants by interfering with chromate uptake.
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Soil contamination by hexavalent chromium [Cr(VI) or chromate] due to anthropogenic activities has become an increasingly important environmental problem. Mineral nutrients such as phosphate (Pi), sulfate and nitrate have been reported to attenuate Cr(VI) toxicity, but the underlying mechanisms
An emphasis of hydrogen sulfide-cysteine cycle on enhancing the tolerance to chromium stress in Arabidopsis.
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Increasing attention has been focused on the health of vegetables and grains grown in the contaminated agricultural soil, it is thus meaningful to find ways to reduce the heavy metals (HMs) accumulation in plants. As sulfur is considered to be an essential macronutrient for plant stress defenses,
A model for the ethylene-mediated auxin distribution under Cr(VI) stress in Arabidopsis thaliana.
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Chromium is one of the top 20 highly toxic heavy metals, which affect agricultural land and economically important crops all over the world. The plant responds to cope with the adverse effects caused by exogenous stimuli. The most important plant's growth, as well as stress response components, are
Identification of transcribed sequences in Arabidopsis thaliana by using high-resolution genome tiling arrays.
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Using a maskless photolithography method, we produced DNA oligonucleotide microarrays with probe sequences tiled throughout the genome of the plant Arabidopsis thaliana. RNA expression was determined for the complete nuclear, mitochondrial, and chloroplast genomes by tiling 5 million 36-mer probes.
Chromate alters root system architecture and activates expression of genes involved in iron homeostasis and signaling in Arabidopsis thaliana.
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Soil contamination by hexavalent chromium [Cr(VI) or chromate] due to anthropogenic activities has become an increasingly important environmental problem. To date few studies have been performed to elucidate the signaling networks involved on adaptive responses to (CrVI) toxicity in plants. In this
ars1, an Arabidopsis mutant exhibiting increased tolerance to arsenate and increased phosphate uptake.
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Arsenic is one of the most toxic pollutants at contaminated sites, yet little is known about the mechanisms by which certain plants survive exposure to high arsenic levels. To gain insight into the mechanisms of arsenic tolerance in plants, we developed a genetic screen to isolate Arabidopsis
Ethylene mediates dichromate-induced inhibition of primary root growth by altering AUX1 expression and auxin accumulation in Arabidopsis thaliana.
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The hexavalent form of chromium [Cr(VI)] causes a major reduction in yield and quality of crops worldwide. The root is the first plant organ that interacts with Cr(VI) toxicity, which inhibits primary root elongation, but the underlying mechanisms of this inhibition remain elusive. In this study, we
The Ca2+ /calmodulin2-binding transcription factor TGA3 elevates LCD expression and H2 S production to bolster Cr6+ tolerance in Arabidopsis.
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Heavy metal (HM) contamination on agricultural land not only reduces crop yield but also causes human health concerns. As a plant gasotransmitter, hydrogen sulfide (H2 S) can trigger various defense responses and help reduce accumulation of HMs in plants; however, little is known about the
Rapid quantification of global DNA methylation by isocratic cation exchange high-performance liquid chromatography.
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The DNA of many eukaryotes is methylated at specific cytosine residues in connection with gene regulation. Here we report a method for the quantification of global cytosine methylation based on enzymatic hydrolysis of DNA, dephosphorylation, and subsequent high-performance cation exchange
Micromonospora metallophores: A plant growth promotion trait useful for bacterial-assisted phytoremediation?
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Heavy metal pollution in the environment is an increasing problem due to natural and anthropogenic activities. The use of bacteria for bioremediation of soils contaminated with heavy metals has gained a lot of attention as it can be considered effective, economic and environmentally sustainable. In
Isolation of Plant Root Nuclei for Single Cell RNA Sequencing
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The characterization of the transcriptional similarities and differences existing between plant cells and cell types is important to better understand the biology of each cell composing the plant, to reveal new molecular mechanisms controlling gene activity, and to ultimately implement meaningful
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