13 Ergebnisse
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
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
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,
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
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
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.
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
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
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 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
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
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
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