The Inducing Effect of Streptomyces lydicus A02 on Tomato Resistance to Botrytis cinerea-Impact on Defense Enzymes of Tomato Seedlings

doi:10.3321/j.issn:1000-7091.2007.02.037

Abstract

Abstract: The study on inducing resistant effect of Streptomyces lydicus A02 to tomato gray mold were carried out in greenhouse. Tomato seedlings were treated via three methods: only inducing with fermentation broth of Streptomyces lydicus A02, inducing after inoculating with spore suspension of Botrytis cinerea, inoculating after inducing. The activities of 4 defense enzymes in tomato leaves were assayed by ultraviolet-visible absorption spectroscopy. The results showed that all the three treatments could increase the activities of defense enzymes, of which the treatment of inoculating after inducing presented a better inducing effect on 4 defense enzymes and a better control effect on tomato gray mold than inducing after inoculating did. The control effect was up to 94.92%.

Key words: Streptomyces lydicus A02, Induced resistance, Botrytis cinerea, Defense enzymes

CLC Number:

S36.412

LIU Yu, LIU Jian-hua, LIU Wei-cheng, QIU Ji-yan, LIU De-wen, DUAN Yu-xi. The Inducing Effect of Streptomyces lydicus A02 on Tomato Resistance to Botrytis cinerea-Impact on Defense Enzymes of Tomato Seedlings[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(2): 152-155. doi: 10.3321/j.issn:1000-7091.2007.02.037.

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