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The release of heavy metals in the environment is a serious threat causing health hazards to living beings. Hence, it is essential to remediate chemical contamination for a safe environment. Bioremediation is considered one of the most cost-effective and sustainable agricultural techniques, in contrast with other conventional methods to reduce chromium toxicity in agricultural lands polluted with...
Chromium is a heavy metal found in various oxidation states (Cr3+ to Cr6+). It is a highly toxic metal widely used in a number of industries and is generally found to have a carcinogenic impact on living organisms. Although there are chemical and biological approaches for reducing chromium toxicity in the environment, in industrial areas green cover is largely affected by this metal contamination...
Extensive use of chromate compounds in the last few decades has resulted in contamination of our environment. In the present study we have investigated the effects of two different concentrations (10, 20 µg ml⁻¹) of chromium salts (CrCl₃, K₂CrO₄ K₂Cr₂O₇) on the growth of Zea mays L. As concentrations of chromium salts (CrCl₃, K₂CrO₄, K₂Cr₂O₇) increased, there was a significant decrease in seed germination...
Plant growth promoting rhizobacteria (PGPR) promote plant growth by various mechanisms such as phytohormone production, enhanced water and nutrient uptake, improved nitrogen availability in the soil, production of ACC-deaminase for ethylene breakdown, phosphate solubilization, siderophore production etc. Microbial auxin production is the major factor not only responsible for strengthening the plant-microbe...
Exposure of the alga Kirchneriella lunaris, isolated from desert soil, to a nutrient solution without phosphorus resulted in distinct growth and protein inhibition in relation to control cultures. In addition, P-deficient algae accumulated much smaller amounts of nitrate accompanied with a rise in free amino acids than the control cultures. The cell multiplications, dry matter, total pigments, proteins,...
Scenedesmus obliquus cultures were subjected for 7 days to increasing levels of Cu+2 (1-60 μM). The cell number, dry weight, and chlorophyll content were reduced as the level of Cu+2 was raised. Photosynthetic oxygen evolution and respiratory oxygen uptake in the dark were also reduced, however, soluble protein contents were negatively affected by Cu+2. However, soluble carbohydrates and free amino...
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