Fu-lin CAO, Ben-xiang HU, Liang PENG, et al. Effect of Hydrogen Peroxide (H2O2) on Content of Total Phenol Flavonoids and Activity of Related Enzymes in Polygala tenuifolia Callus[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(20): 153-159.
DOI:
Fu-lin CAO, Ben-xiang HU, Liang PENG, et al. Effect of Hydrogen Peroxide (H2O2) on Content of Total Phenol Flavonoids and Activity of Related Enzymes in Polygala tenuifolia Callus[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(20): 153-159. DOI: 10.13422/j.cnki.syfjx.20191515.
Effect of Hydrogen Peroxide (H2O2) on Content of Total Phenol Flavonoids and Activity of Related Enzymes in Polygala tenuifolia Callus
To study the changes in total phenolic and flavonoid content and antioxidant enzyme activity of
Polygala tenuifolia
callus in MS medium with different concentrations of H
2
O
2
in order to explore the physiological mechanism of
Polygala tenuifolia
callus in adapting to H
2
O
2
environmental stress at the cellular level.
Method:
2
Five gradients of 0
5
10
15
20 mmol·L
-1
were set for H
2
O
2
concentration and added to MS medium
with
P
.
tenuifolia
callus as the experimental material. Total phenols
total flavonoids and antioxidant enzyme activities of callus were determined after 5
10
15
20
25 d of culture
respectively.
Result:
2
The contents of total phenols and flavonoids were the highest when the concentration of H
2
O
2
was 5 mmol·L
-1
for 15 d. The SOD activity was the highest when the callus was cultured for 5 d and the exogenous H
2
O
2
concentration was 5 mmol·L
-1
. POD activity was the highest at 25 d and 5 mmol·L
-1
concentration of exogenous H
2
O
2
.CAT activity was the highest at 25 d and 15 mmol·L
-1
concentration of exogenous H
2
O
2
.
Conclusion:
2
P
.
tenuifolia
callus has the ability to adapt to the environmental stress of H
2
O
2
at a certain concentration. When it is subjected to the environmental stress of H
2
O
2
P
.
tenuifolia
callus can alleviate the damage by regulating its secondary metabolites and protecting enzyme system. It can significantly promote the content of total phenols and flavonoids in secondary metabolites at 5-10 mmol·L
-1
. SOD activity was significantly increased at 5 d and the concentration of exogenous H
2
O
2
of 5 mmol·L
-1
. POD activity was significantly increased at 25 d and the concentration of exogenous H
2
O
2
of 5 mmol·L
-1
. CAT activity was significantly increased at 25 d and concentration of exogenous H
Pei Z M , Murata Y , Benning G , et al . Calcium channels activated by hydrogen peroxide mediate abscisic signaling in guardcells [J]. Nature , 2000 , 406 ( 6797 ): 731 - 734 .