Evaluating growth and biochemistry of Westiellopsis prolifica in response to Malathion

Jyotishmita Dutta, P P Baruah
2019 Plant Science Today  
The present endeavour was aimed to investigate the chronic response of Westiellopsis prolifica to an organophosphate insecticide malathion at different concentrations 30, 60 and 90ppm. The influence of malathion on growth (biomass), pigments (chlorophyll-a, carotenoid), release of metabolites such as protein and carbohydrate was analysed for a period of 16 days under aseptic laboratory conditions. Results revealed enhancement in chlorophyll-a production at 30ppm on 4th day (p˂0.05) and 8th day
more » ... ˂0.05) and 8th day (p˃0.05), from the day of inoculation. On the other hand, there was a significant decrease in the carotenoid, protein and carbohydrate content with increase in malathion concentration in a time and dose dependent manner. However, a little but insignificant increase in biomass was recorded on the 4th day at 30ppm concentration over the control. The study revealed that the reduction in biomass, protein and carbohydrate content with the increase of malathion concentrations was an indication of its toxicity to the test cyanobacterium which is one of the natural biofertilizers in the rice field ecosystem.
doi:10.14719/pst.2019.6.4.622 fatcat:bo2yncznmrechg25ki5cs5apby