نتایج جستجو برای: sungun copper plant
تعداد نتایج: 474637 فیلتر نتایج به سال:
At the moment, accumulation of heavy metals in water and soil is considered as an important factors of environmental pollution. Copper accumulation in the environment, resulting of application of fertilizers, fungicides and industrial and urban activities, leads to toxicity and adverse effects of this heavy metal on many biological processes of plants. Phytoremediation, is an effective and affo...
The suggestion that compounds known to inhibit copper catalysis might exert an inhibiting effect upon photosynthesis and respiration in green plants arose primarily from the following considerations: (a) The aerobic oxidation of ascorbic acid is very sensitive to catalysis by copper-protein complexes in a great variety of plant press-juices (I). (b) Both copper (2) and ascorbic acid (3) are fou...
In 1937, Stotz, Harrer, and King (1) reported that the activity of several plant juices in catalyzing the aerobic oxidation of ascorbic acid was dependent on their copper content, and such activity was lost upon treatment with substances known to form stable complexes with copper. Since that time, two basically different views have developed concerning the r&e of copper in the aerobic oxidation...
Sinorhizobium meliloti CCNWSX0020, isolated from root nodules of Medicago lupulina growing in gold mine tailings in the northwest of China, displayed both copper resistance and growth promotion of leguminous plants in copper-contaminated soil. Nevertheless, the genetic and biochemical mechanisms responsible for copper resistance in S. meliloti CCNWSX0020 remained uncharacterized. To investigate...
abstract heavy metals enter to human food chain through the plant and soil contamination. it is very important to evaluate the affecting factors on plant uptake of heavy metals. in this study the effects of copper and zinc availability on cadmium uptake of root and shoot of corn and sunflower was investigated. the experiment was carried out with a factorial arrangement, two species of plants (s...
Two genes recently identified in Arabidopsis thaliana may be involved in sequestering free copper ions in the cytoplasm and delivering copper to post-Golgi vesicles. The genes COPPER CHAPERONE and RESPONSIVE TO ANTAGONIST1 are homologous to copper-trafficking genes from yeast and humans. This plant copper-delivery pathway is required to create functional ethylene receptors. The pathway may also...
Two genes recently identified in Arabidopsis thaliana may be involved in sequestering free copper ions in the cytoplasm and delivering copper to post-Golgi vesicles. The genes, COPPER CHAPERONE and RESPONSIVE TO ANTAGONIST1 are homologous to copper-trafficking genes from yeast and humans. This plant copper-delivery pathway is required to create functional ethylene receptors. The pathway may als...
The New York State Energy Research and Development Authority, NYSERDA, seeks to reduce the state’s energy consumption. Among its many activities, the authority supports incentives to purchase high-effi ciency motors. Ultra-high effi ciency, copper-rotor motors (CRMs) have been available for several years, but NYSERDA lacked industrial data on them. The authority therefore initiated an R&D progr...
Here we report on the analysis of two aquatic plant species, Azolla caroliniana and Lemna minor, with respect to tolerance and uptake of co-occurring arsenic, copper, and silicon for use in engineered wetlands. Plants were cultured in nutrient solution that was amended with arsenic (0 or 20 microM), copper (2 or 78 microM), and silicon (0 or 1.8 mM) either singly or in combination. We hypothesi...
Copper is considered as one of the most important nutrient elements for plants. If its contents are concentrated higher than the standard value it can be considered as a pollutant element. The content of absorbable copper in the area around Sarcheshmeh copper mine can be significantly high. In this study, samples of soil were collected in summer through a particular sampling method with chimney...
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