TY - JOUR AU - Saleh, B. T1 - Lead (Pb) heavy metal impacts in the green Ulva lactuca (Chlorophyceae) marine algae JO - Journal of Stress Physiology & Biochemistry Y1 - 2016 VL - 12 IS - 2 SP - 62 EP - 71 UR - http://www.jspb.ru/issues/2016/N2/JSPB_2016_2_62-71.pdf KW - Ulva lactuca Algae KW - Physiological parameters KW - Lead (Pb) toxicity KW - Heavy metals N1 - Owner: Алексей N1 - Added to JabRef: 2016.05.18 N2 - Toxicity of different lead (Pb) (0, 2, 4 and 8 mg/L) concentrations in the green Ulva lactuca (Chlorophyta) marine algae at physiological level has been investigated 48 h after Pb treatment under laboratory conditions. Thalus algae damages followed Pb treatment as revealed by microscopy test showed that the 4 and 8 mg/L Pb caused morphological changes in cells viability; whereas, no effect observed at the lowest Pb applied concentration (2 mg/L). Data revealed that Pb stress caused reduction in most investigated physiological parameters i.e. Pigments content, osmotic potential and membrane stability index values. This decline in osmotic potential was significantly (p ≤ 0.001) different. Whereas, estimated electric conductivity (EC) values increased significantly (p ≤ 0.001) as applied Pb concentration increased. The current study allowed somewhat to highlight and better understanding Pb impacts in U. lactuca algae. Thereby, the studied algae could be used as a useful bioindicator in Pb polluted ecosystems. ER -