Ethephon induces monoterpene production and lipid oxidative stress in Houttuynia cordata Thunb.
2012
Xu, Y.W. | Zhao, D. | Wu, W., Sichuan Agricultural Univ., Ya'an 625014 (People's Republic of China) | Husaini, A.M., Sher-e-Kashmir Univ. of Agricultural Sciences and Technology of Kashmir, Jammu and Kashmir-192102 (India) | Guan, L.L., Chinese Academy of Tropical Agricltural Sciences, Haikou (Peoples' Republic of China). Tropical Crops Genetic Resources Inst.
Ethylene regulates many aspects of plant processes. The effect of application of ethephon (an ethylene-releasing compound) on the production of monoterpenes and induction of oxidative stress in Houttuynia cordata Thunb., a medicinal and aromatic herb rich in monoterpenes. H. cordata showed two peaks of total monoterpene content at 0.1 and 100 mM ethephon applications, after treatment with different concentrations of ethephon. However, high dose of ethephon (100 mM) also led to oxidative damage, as shown by increase in H2O2, malondialdehyde and antioxidative enzyme activities. Monoterpene accumulation at 100mM ethephon is accompanied by oxidative stress and hence, adverse to H. cordata, while 0.1 mM ethephon application is the most appropriate for enhanced monoterpene production.
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