LIU Sijia,SONG Xue,YAO Jie,et al.Effect of H2O2 on Secondary Metabolism in Atractylodes chinensis and Its Mechanism[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(06):202-209.
LIU Sijia,SONG Xue,YAO Jie,et al.Effect of H2O2 on Secondary Metabolism in Atractylodes chinensis and Its Mechanism[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(06):202-209. DOI: 10.13422/j.cnki.syfjx.20230211.
Effect of H2O2 on Secondary Metabolism in Atractylodes chinensis and Its Mechanism
solution and clean water, and the relationships between the contents of reactive oxygen species, activities of antioxidant enzymes, activities of key enzymes of secondary metabolites, and contents of secondary metabolites in
A. chinensis
were compared.
Result
2
Under treatment with exogenous H
2
O
2
, the content of reactive oxygen species and malondialdehyde (MDA) in the fresh rhizomes of
A. chinensis
were significantly elevated on the 4th day, and returned to normal level on the 6th-8th day. The activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) were all increased first and then decreased, and reached the peak on the 4th, 4
th
-6
th
and 2
th
-4
th
day, respectively. The activities of 3-hydroxy-3-methyl glutaryl coenzyme A reductase (HMGR) and acetyl CoA carboxylase (ACC), key enzymes of the secondary metabolites, were remarkably enhanced, and under treatments with different concentrations of H
2
O
2
, the activities of key synthetic enzymes of the secondary metabolites in 0.2 mmol·L
-1
H
2
O
2
group
were increased most, with the highest biosynthesis of secondary metabolites. The contents of atractylodin,
β
-eudesmol, atractylone, atractylenolide Ⅱ, and atractylenolide Ⅲ on the 6th
day of 0.2 mmol·L
-1
H
2
O
2
treatment were 89.5%, 108.7%, 308.8%, 64.7% and 9.3%, respectively higher than those in the control.
Conclusion
2
The antioxidant enzymes and secondary metabolites in
A. chinensis
synergistically maintain the balance of reactive oxygen species, and exogenous H
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ALVAREZ M E , PENNELL R I , MEIJER P J , et al . Reactive oxygen intermediates mediate a systemic signal network in the establishment of plant immunity [J]. Cell , 1998 , 92 ( 6 ): 773 - 784 .
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