ACTA AGRICULTURAE BOREALI-SINICA ›› 2014, Vol. 29 ›› Issue (2): 89-93. doi: 10.7668/hbnxb.2014.02.017

Special Issue: Corn

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Effects of Different Virulent Isolates of Exserohilum turcicum on Host PPO Activity

ZHANG Wen-dian1,3, TIAN Lan2, ZHANG Xiao-yu2, GONG Xiao-dong2, ZHANG Yun-feng2, GU Shou-qin2, FAN Yong-shan1   

  1. 1 Department of Life Sciences,Tangshan Normal College,Tangshan 063000,China;
    2 Mycotoxin and Molecular Plant Pathology Laboratory, College of Life Science, Agricultural University of Hebei, Baoding 071001, China;
    3 Hebei Normal University for Nationalities, Chengde 067000, China
  • Received:2013-12-25 Published:2014-04-28

Abstract: In this research, the effects of different virulent isolates of Exserohilum turcicum on host PPO activity was explored and the tested strains were screened in our previous study. A rapid and accurate method of determina- tion of PPO activity through building different reaction systems and the optimal detection time of enzyme activity was established. The effect on host PPO activity from E. turcicum virulent strain YC and attenuated strain 01-23T was ex- plored. The experimental results showed that, under the optimum experimental condition, the influence on host de- fense enzyme PPO from the infection of attenuated strain 01-23T and virulent strain YC was obviously different. The former led to host defense response more easily than the latter by the way of improving the host defense enzyme PPO activity and maintaining the host resistance. The study will give a basis for further researching in the interactions be- tween the fungal pathogen and the host corn in the future.

Key words: Polyphenol oxidase, Exserohilum turcicum, Pathogenicity, Resistance

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Cite this article

ZHANG Wen-dian, TIAN Lan, ZHANG Xiao-yu, GONG Xiao-dong, ZHANG Yun-feng, GU Shou-qin, FAN Yong-shan. Effects of Different Virulent Isolates of Exserohilum turcicum on Host PPO Activity[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(2): 89-93. doi: 10.7668/hbnxb.2014.02.017.

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