نتایج جستجو برای: toxicity to plants
تعداد نتایج: 10694236 فیلتر نتایج به سال:
Phytoremediation counts as a major method for future which essentially needs resistance to contaminating agents. We pretreated the plants (Salix babylonica, as a model plant in phytoremediation of polluted waters) by sodium cyanide (0, 3 and 5 mg CN- L-1) to induce resistance with regard to acclimation and then examined their resistance to higher concentrations of cyanide. Accordingly, some of ...
Lead is a nonessential element that has a negative effect on plant growth and development. Plant symbiosis with arbuscular mycorrhizal fungi (AMF) in soils contaminated with heavy metals can affect growth of plant, nutrition and tolerance against heavy metals. In this study, the effect arbuscular mycorrhizal fungi Glomus intraradices on the growth, photosynthetic pigments, protein content, prol...
Environmental contamination with arsenic (As) is a global environmental, agricultural and health issue due to the highly toxic and carcinogenic nature of As. Exposure of plants to As, even at very low concentration, can cause many morphological, physiological, and biochemical changes. The recent research on As in the soil-plant system indicates that As toxicity to plants varies with its speciat...
influence of cadmium toxicity on rice genotypes as affected by zinc, sulfur and nitrogen fertilizers
cadmium (cd) is among the most widespread and toxic heavy metal in several part of the world. its toxicity in soil is becoming a severe threat to living organism worldwide. it is one of the main pollutants in paddy fields near industrial areas and highly toxic to plant growth and development of the plants. cd can be easily taken up by plants and enter the food chain. therefore, precautionary me...
A proposal has been developed by the Agricultural Chemical Safety Assessment (ACSA) Technical Committee of the ILSI Health and Environmental Sciences Institute (HESI) for an improved approach to assessing the safety of crop protection chemicals. The goal is to ensure that studies are scientifically appropriate and necessary without being redundant, and that tests emphasize toxicological endpoin...
The harmful effects of mercury lead to the inhibition growth and changes in biochemical constituents food crops. Plants that are hyperaccumulators accumulate present air or soil which leads retardation as well affects metabolic pathway regulation plants. Several reactions happen due metallic accumulation such lipid peroxidation, enzyme activation, chromosomal aberrations, untimely cell death. M...
Euphorbia is a genus of flowering plants belonging to the family Euphorbiaceae. Consisting of 2008 species. The genus Euphorbia produces an irritant, which constitute a health hazard to humans and livestock. The genus Euphorbia is one of the largest and most complex genera of flowering plants, however, several botanists have made unsuccessful attempts to subdivide it to smaller genera. Many Eu...
environmental stresses are one of the most important factors of agricultural products reduction in the world. the influence of different concentrations of nickel nitrate (0, 100, 200 and 500 μm in hoagland’s solution) on dry matter, catalase enzyme, flavonoids, hydrogen peroxide, peroxidase enzyme, mda and accumulation of ni were studied in coriander ( coriandrum sativum ) plants. treatment wit...
rapid industrialization, installation of mega-desalination plants and suspected trace metals discharges in the kuwait marine environment instigated us to determine the trace metals toxicity on the body structures (first dorsal fin, otolith and scales) of the commercially relished mullet fish, liza klunzingeri. 96 h toxicity test with fe, cd, ni, as, showed the body structure of l. klunzingeri t...
The Toxic Substances Control Act is the principal US law governing industrial chemicals. Over the past three and one half decades, it has become clear that a considerable toxicological information gap exists about chemicals in commerce. The current provisions of the US TSCA law have failed to fill, and perhaps even exacerbated, that gap. For at least the past 5 years, bills have been introduced...
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