ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (4): 169-176. doi: 10.7668/hbnxb.20190995

Special Issue: Tomato Plant protection

• Resource and Environment·Plant Protection • Previous Articles     Next Articles

The Exploration of the Effect of N -3-oxo-tetradecanoyl Homoserine Lactone on the Resistance to Botrytis cinerea on Tomato

YANG Xiangyun1,2, LIU Fang2,3, ZHAO Qian2,3, SONG Shuishan2,3, ZHANG Liping1   

  1. 1. College of Life Science, Hebei University, Baoding 071000, China;
    2. Institute of Biology, Hebei Academy of Sciences, Shijiazhuang 050000, China;
    3. Engineering Research Center for Microbial Control of Major Crop Diseases in Hebei Province, Shijiazhuang 050081, China
  • Received:2019-12-19 Published:2020-08-28

Abstract: In order to determine the bacterial quorum sensing (QS) signaling molecule, N -acyl-homoserine lactones (AHLs) induce resistance to fungal diseases in plants. Tomato was used as the test material, Botrytis cinerea was used as the pathogen indicator bacteria, and AHLs signal molecules with different side chain length and side chain modification were pretreated to inoculate the pathogen bacteria, and the long chain signal molecule N-3-oxo-tetradecanoyl was found. 3OC14-HSL had the best resistance to gray mold. Real-time quantitative PCR detection of disease resistance genes revealed that the signal molecule 3OC14-HSL pretreatment significantly induced up-regulation of the genes PI1 and PI2 in the tomato and jasmonic acid (JA) signaling pathway compared with the untreated control group; However, the NPR1 gene related to the salicylic acid signaling (SA) pathway was significantly down-regulated, but the PR1 gene was not significantly changed. Further DAB staining, determination of hydrogen peroxide content, and detection of peroxidase (POD) and superoxide dismutase(SOD)enzyme activities revealed that 3OC14-HSL pretreatment caused a large amount of reactive oxygen species in tomatoes compared to the untreated control group. 3OC14-HSL also could maintain high POD, SOD activity. These results indicated that the long-chain signaling molecule N- 3-oxo-tetradecanoyl-homoserine(3OC14-HSL) could induce resistance to gray mold of tomato, and the resistance effect might be related to the jasmonic acid signal pathway.

Key words: Tomato, N-acyl-homoserine lactone, Botrytis cinerea, Resistance

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Cite this article

YANG Xiangyun, LIU Fang, ZHAO Qian, SONG Shuishan, ZHANG Liping. The Exploration of the Effect of N -3-oxo-tetradecanoyl Homoserine Lactone on the Resistance to Botrytis cinerea on Tomato[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(4): 169-176. doi: 10.7668/hbnxb.20190995.

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