The effects of nano perlite on the unicellular Haematococcus pluvialis algae

Algae, as the organisms producing food in aquatic ecosystems, respond to the chemical composition of the aquatic environment, like other aquatic organisms, which in turn could change their biochemistry, physiology and morphology characters. Nano-perlites are one of the common nanoparticles, which are used to remove heavy metals from the water. In current study, we investigated the various effects of nano-perlites on Haematococcus pluvialis algae. The results showed that nano-perlite significantly reduced the growth rate of algae in different concentrations. Also, the ratio of chlorophyll a to chlorophyll b and auxiliary pigments content were increased and the efficiency of photosystem II reaction center was reduced partially. The obtained results proved the toxic effects of this nanoparticle. The amount of astaxanthin was also reduced in treatment with nanoperlite due to a significant reduction in the amount of algae biomass. The results of volatile compounds detection by GC-MS analysis, indicated an increase in phenolic compounds compared to controls at 25, 50 and 100 mg / L treatments of nano-perlite

کلیدواژه ها:

nano-perlites ، Haematococcus pluvialis algae ، Tension ، nanoparticles