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2013•Hubei nongye kexueRequires access

Effects of Crude Toxin from Rhizoctonia solani on Defensive Enzyme Activity and MDA Content in Tobacco Seedling

Yuanhua Wu

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Abstract

Tobacco seedlings at 6-leaf stage were treated with crude toxin from tobacco target spot disease(Rhizoctonia solani),of which the peroxidase(POD),polyphenol oxidase(PPO),superoxide dismutase(SOD),catalase(CAT) and phenylalanine ammonialyase(PAL) activity as well as malondialdehyde(MDA) content was measured 12,24,36,48,60,72 h after treatment.The results demonstrated that after toxin treatment,POD,PAL and MDA were activated as their activities were higher than control,changes of POD,PAL and MDA were undulate;PPO and CAT activities increased firstly and then decreased along with time increasing,but always higher than control;SOD activity increased continually.

About this research paper

What this paper is about

Tobacco seedlings at 6-leaf stage were treated with crude toxin from tobacco target spot disease(Rhizoctonia solani),of which the peroxidase(POD),polyphenol oxidase(PPO),superoxide dismutase(SOD),catalase(CAT) and phenylalanine ammonialyase(PAL) activity as well as malondialdehyde(MDA) content was measured 12,24,36,48,60,72 h after treatment.The results demonstrated that after toxin treatment,POD,PAL and MDA were activated as their activities were higher than control,changes of POD,PAL and MDA were undulate;PPO and CAT activities increased firstly and then decreased along with time increasing,but always higher than control;SOD activity increased continually.

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Available abstract

Tobacco seedlings at 6-leaf stage were treated with crude toxin from tobacco target spot disease(Rhizoctonia solani),of which the peroxidase(POD),polyphenol oxidase(PPO),superoxide dismutase(SOD),catalase(CAT) and phenylalanine ammonialyase(PAL) activity as well as malondialdehyde(MDA) content was measured 12,24,36,48,60,72 h after treatment.The results demonstrated that after toxin treatment,POD,PAL and MDA were activated as their activities were higher than control,changes of POD,PAL and MDA were undulate;PPO and CAT activities increased firstly and then decreased along with time increasing,but always higher than control;SOD activity increased continually.

Key concepts: Polyphenol oxidase, Rhizoctonia solani, Catalase, Superoxide dismutase, Point of delivery, Malondialdehyde, Peroxidase, Seedling

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Effects of Crude Toxin from Rhizoctonia solani on Defensive Enzyme Activity and MDA Content in Tobacco Seedling — Research Paper | ScholarLens