Effect of Nitric Oxide and Hydrogen Peroxide on Adventitious Root Development from Cuttings of Ground-Cover Chrysanthemum and Associated Biochemical Changes

The results showed that the effect of nitric oxide or H2O2 on rooting of ground-cover chrysanthemum cuttings was dose-dependent, with a maximal biological response at 50 μM of NO donor sodium nitroprusside or 200 μM H2O2

Wei-Biao Liao; Hong-Lang Xiao; Mei-Ling Zhang

2010

Scholarcy highlights

  • The results showed that the effect of nitric oxide or H2O2 on rooting of ground-cover chrysanthemum cuttings was dose-dependent, with a maximal biological response at 50 μM of NO donor sodium nitroprusside or 200 μM H2O2
  • NO and H2O2 treatments at the proper dosage might increase the activities of polyphenol oxidase and indoleacetic acid oxidase and the content of water-soluble carbohydrate and total nitrogen, while decreasing the total polyphenol content of ground-cover chrysanthemum cuttings
  • Rooting percentage was significantly correlated with these biochemical constituent activities or contents
  • These results indicated that NO and H2O2 treatments enhanced adventitious root development synergistically and independently by stimulating the activities of PPO and IAAO enzymes and the content of carbohydrate and nitrogen and simultaneously repressing the production of polyphenol
  • These results indicated that nitric oxide and H2O2 treatments enhanced adventitious root development synergistically and independently by stimulating the activities of polyphenol oxidase and indoleacetic acid oxidase enzymes and the content of carbohydrate and nitrogen and simultaneously repressing the production of polyphenol

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