[Effect of exogenous salicylic acid and ultraviolet radiation on Ulva prolifera under different light conditions].

To study the combined effects of exogenous salicylic acid (SA) and ultraviolet radiation (UV) on marine green algae Ulva prolifera under high (160 Μmol·m·s) and low (70 Μmol·m·s) light intensities, the growth, chlorophyll fluorescence parameters, photosynthetic rate of oxygen, superoxide dismutase (SOD) activity, soluble polysaccharide and soluble protein contents were investigated after they grew with or without ultraviolet (UV, 3.2 W·m) radiation in the presence or absence of SA (10 Μg·mL) for three days. The treatments included control group (CK), SA, UV and UV+SA treatments.

[Effect of salicylic acid on the growth and physiological performance of Ulva prolifera].

In order to study the effects of salicylic acid on the growth and physiological performance of Ulva prolifera with different proliferative styles, we took U. prolifera from vegetative (VU) and spore proliferative cells (SU) as materials, and cultured them under different salicylic acid concentrations to investigate their growth rate, chlorophyll fluorescence, SOD and soluble protein content. The results showed that the growth of both VU and SU was promoted by low concentration of salicy-lic acid, especially for VU.