Effects of tellurium stress on growth and biochemistry of Spiurlina platensis

Add Te(Ⅳ) in Spirulina platensis at different growing phases.There were four test sets,which were added Te(Ⅳ) from the 1~(th) to the 4~(th) respectively.The accumulative concentration was 650 mg·L~(-1).Effects of Te(Ⅳ) stress on active component of Spiurlina platensis were studied.It was indicated that the inhibition of Te(Ⅳ) stress on growth of S.platensis weakened with the decrease of stress intensity of Te(Ⅳ) .Contents of soluble protein(SP) decreased with the increase of stress intensity of Te(Ⅳ).At low stress intensity of Te(Ⅳ),contents of SP of the test sets were higher than those of the control.Contents of phycocyanin(PC) and allophycocyanin(APC) in all test sets were higher than those of the control and the trends were similar to SP.Compared to the control,the activity of SOD of all test sets was higher and increased with the increase of stress intensity of Te(Ⅳ).Te(Ⅳ) stress didn't change the component of the pigment,but contents of lutein, β-carotene and chlorophyll decreased sharply.