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journal1 ›› 2016, Vol. 32 ›› Issue (3): 388-395.DOI: 10.16409/j.cnki.2095-039x.2016.03.015

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Activities of Antioxidative and Cell Wall Defense Enzymes and Expression of StLTPa1 Gene in Fusarium culmorum-infected Potato Tuber

FU Yao, SHI Lijuan, SUN Meili, SHAN Weiyu, WANG Xu, LI Fenglan   

  1. College of Life Science, Northeast Agricultural University, Harbin 150030, China
  • Received:2015-06-01 Online:2016-06-08 Published:2016-06-07

Abstract: Fusarium culmorum is the main pathogenic fungus for potato dry rot in Heilongjiang Province. This disease causes corruption of stored potato tubers, affecting their commodity value. In order to understand the occurrence of the disrase, we analyzed physiological and biochemical defenses from the tubers in respect toantioxidative enzymes, cell wall degrading enzyme and expression profiles of disease related genes during F. culmorum infection progress. The results showed that the content of soluble proteins, MDA content, SOD activity, chitinase activity and β-1,3-glucanase activity increased during F.culmorum infection. In addition, the expression level of non-specific lipid transfer protein gene-StLTPa1 showed fluctuation in the entire infection process. These performances may play a role in plant defense responses.

Key words: potato, dry rot, Fusarium culmorum, antioxidative enzyme, cell wall defense enzyme, StLTPa1 gene expression

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