Phytoremediation potential of Ulva ohnoi (Chlorophyta): Influence of temperature and salinity on the uptake efficiency and toxicity of cadmium

摘要: Abstract Ulva ohnoi is a green macroalga with fast growth and high rates of nitrogen phosphorus absorption. Recently, this species has been recorded in several places record tide formation some them. Using molecular tools, we herein report the first occurrence Brazil demonstrate its potential for phytoremediation typical environmental concentrations Cd (0.625–15 µg L-1). Similarly, effects physicochemical parameters (salinity temperature) on toxicity uptake efficiency were evaluated. Molecular analysis two sequences (1141 bp) obtained corroborates another 34 U. from GenBank. The addition medium affected photosynthetic reduced rate. showed resistance to when cultivated at 18 °C, S15 18–25 °C, S35, between 0.625 2.5 μg. L-1 Cd; yet, positive rate was maintained. Dose-dependent accumulation observed all combinations factors used maximum value 4.20 μg Cd per gram dry seaweed 15 μg. 18 °C S35. Maximum concentration factor 81.3 ± 1.1% added 0.625 μg. 18 °C. Our results using saltwater or brackish water.