Responses of Main Secondary Metabolites and DPPH Free Radical Scavenging Activity of the Korean Pine to Drought Stress
The Korean pine were tested to study the effects of drought stress and rehydration on flavonoids content,tannin content,procyanidin content and DPPH free radical scavenging activity of needles and bark chlorenchyma.Flavonoids,tanninand procyanidin content of bark chlorenchyma decreased significantly under drought stress,flavonoids and tannin content continue to decrease after rehydration,and three kinds of content were not returned to control levels.Flavonoids and procyanidin content of needles decreased and tannin content significantly increased,after rehydration they were not returned to control levels.IC50 values of needles and bark chlorenchyma significantly increased under drought stress,and DPPH free radical scavenging activity of extract was significantly decreased,after rehydration DPPH free radical scavenging activity of needle and bark chlorenchyma were returned to control levels.Secondary metabolites and antioxidant activity of needles and bark chlorenchyma were significantly affected by drought stress,but there were some different responses to drought stress between needles and bark chlorenchyma.
国家科技期刊平台
NSTL
万方数据
维普
