ACTA AGRICULTURAE BOREALI-SINICA ›› 2012, Vol. 27 ›› Issue (4): 153-157. doi: 10.3969/j.issn.1000-7091.2012.04.029

Special Issue: Potato crops

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Changes on Activity of Defensive Enzyme after Inoculating with Toxin of Rhizoctonia solani in Potato

ZHANG Xiao-yu1, YU Xiao-xia2, YU Zhuo1, ZHANG Wu-quan1, JU Liang-liang1, XUE Yu-feng1   

  1. 1. College of Agronomy, Inner Mongolia Agricultural University, Huhhot 010019, China;
    2. Key Laboratory of Crop Genomies and Genetic Improvement, Ministry of Agriculture, China Agricultural University, Beijing 100193, China
  • Published:2012-08-28

Abstract: The relationship between the activity of defensive enzyme and the resistance to Rhizoctonia solani in potato inoculated with its toxin was studied for resistance mechanism with potato seedlings of having different resist- ance. The results showed that after inoculation, the activities of peroxidase (POD), polyphenoloxidase (PPO), super- oxide dismutase(SOD) and catalase(CAT) were all increased at different time. The activities of POp, PPO and SOD were increased quickly at 36 -96 h after inoculation and were higher in resistance cuhivar Desiree than sus- ceptible cultivars Atlantic. The CAT activity firstly decreased and then increased, at 60 h reached the highest, but was unrelated with its resistance. 96 h later,the POD and SOD activity remains elevated quickly,but there was not diferent between resistant and susceptible varieties. The PPO and CAT activity increased slowly.

Key words: Rhizoctonia solani, Toxin, Potato, Activity of defensive enzyme

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Cite this article

ZHANG Xiao-yu, YU Xiao-xia, YU Zhuo, ZHANG Wu-quan, JU Liang-liang, XUE Yu-feng. Changes on Activity of Defensive Enzyme after Inoculating with Toxin of Rhizoctonia solani in Potato[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(4): 153-157. doi: 10.3969/j.issn.1000-7091.2012.04.029.

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