Enhancing bioremediation potential of microalgae Chlorella vulgaris and Scenedesmus acutus by NaCl for pyrene degradation.

Microalgae are increasingly recognized as promising organisms for bioremediation of organic pollutants. This study investigates the potential of enhancing the bioremediation efficiency of pyrene (PYR), a polycyclic aromatic hydrocarbon (PAH), through NaCl induced physiological and biochemical alterations in two microalgae species, Chlorella vulgaris and Scenedesmus acutus. Our findings reveal significant improvement in PYR removal when these microalgae were cultivated in the presence of 0.

Light intensity affects tolerance of pyrene in and .

The impact of light intensity on the toxicity of pyrene, a 4-ring polycyclic aromatic hydrocarbon (PAH), was studied in and . Both species were cultured under low light, LL [50-60 μmol(photon) m s], and high light, HL [100-110 μmol(photon) m s] conditions to study the effects of pyrene (PYR) toxicity on growth parameters, the content of biomolecules, chlorophyll content, and photosynthetic efficiency. In the presence of PYR, could grow well in LL and HL intensity.

Seed nanopriming by silicon oxide improves drought stress alleviation potential in wheat plants.

The present study explored the effectiveness of SiO2 nanoparticles (NPs) as seed priming agent (15 mg L-1) to improve drought tolerance in the wheat cultivar HI 1544. Seed germination studies showed significant enhancement in the rate of seed germination, seedling growth and vigour, seed water uptake, and amylase activity in nanoprimed (NP) seeds compared with unprimed (UP) seeds. Pot experiments using wheat plants subjected to drought stress showed that SiO2 nanopriming enhanced the ability of wheat plants to withstand water deficit conditions by balancing the production of reactive oxygen species and the activity of enzymatic antioxidants like peroxidase, catalase, and superoxide dismutase.

Priming with zinc oxide nanoparticles improve germination and photosynthetic performance in wheat.

The present study is the first attempt to demonstrate the beneficiary effects of seed priming with zinc oxide nanoparticles (ZnO NPs) in wheat cultivar H-I 1544. Wheat seeds primed with ZnO NPs (10 mg/L) showed a significant positive influence on seed germination performance and vigour index as compared to unprimed (control) and hydroprimed seeds. Furthermore, nanopriming also enhanced seed water uptake resulting in enhanced α-amylase activity.