A comparative study of phycobilliprotein production in two strains of Pseudanabaena isolated from Arctic and tropical regions in relation to different light wavelengths and photoperiods

first_imgPhycobiliproteins, which include phycocyanin, allophycocyanin and phycoerythrin, are the group of colouredaccessory photosynthetic pigments present in cyanobacteria (blue-green algae). Pseudanabaena is a genus ofmicroscopic cyanobacteria, cosmopolitan in distribution and known to be rich in phycoerythrins. Cyanobacteriaare photosynthetic organisms, thus, one of the factors that influences their metabolism is the quality andquantity of incident light. In order to determine the production of phycobiliproteins (mainly phycocyanin andphycoerythrin) in this genus, the quantity of these pigments was investigated in two different strains ofPseudanabaena, P. catenata USMAC16 isolated from an Arctic location (Svalbard) and P. amphigranulataUSMAC18 from a tropical location (Tasik Harapan, USM, Malaysia). The aims of this study were twofold. First,to determine the influence of different light wavelengths (white, green and red) and exposure duration (photoperiodof 12–24 h (h)) on phycocyanin and phycoerythrin production in the two strains. Second, to comparethe production of phycobiliprotein between the two strains. Highest phycocyanin production was obtainedunder red light, while phycoerythrin production was highest under green light. Highest production was achievedwith photoperiod 24:00 h L:D (L: light, D: dark) in the polar strain and 12:12 h L: D in the tropical strain. P.catenata (Arctic strain) was a good producer of phycoerythrin when grown under green light.last_img read more

FL Legislature Passes Bill to Help Opioid Lawsuits

first_imgThe bill, if it passes, would allow Moody to track opioid sales. She would be able to see the cities, counties and zip codes where the drugs are sold, as well as the patient’s birth year. However, patient information will be protected. A bill to help Florida Attorney General Ashley Moody sue drug manufacturers and pharmacies is on its way to Governor DeSantis’ desk.The state’s Senate unanimously passed a bill on Friday giving Moody access to information in Florida’s prescription drug data base to help build her case against opioid manufacturers and pharmacies that the state believes oversold pain pills and did not prevent illegal sales.TY Sen. Pres. @BillGalvano, House Speaker @RepJoseOliva, @ChrisSprowls, @AmberMariano, @TomLeeFL and every member of the Fla. Legislature for voting unanimously for HB 1253. This bill will strengthen our efforts to hold those responsible for fueling the opioid crisis accountable. pic.twitter.com/jbWbS4hNyR— Fla. AG Ashley Moody (@AGAshleyMoody) May 3, 2019last_img read more