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Acta Horticulturae Sinica ›› 2024, Vol. 51 ›› Issue (6): 1403-1412.doi: 10.16420/j.issn.0513-353x.2023-0453

• Plant Protection • Previous Articles     Next Articles

Antagonistic Activity of Volatile Organic Compounds of Bacillus cereus Strain G3-17 Against Apple Ring Rot

QIN Genhong1,2, YUAN Hongbo1,3, WANG Zhuoni1, SHI Bingke1, FAN Yangyang1, WANG Li1, ZHANG Meng2, TU Hongtao1,3, XU Chao2,**(), HOU Hui1,3,**()   

  1. 1 Zhengzhou Fruit Research Institute,Chinese Academy of Agricultural Sciences,Zhengzhou 450009,China
    2 College of Plant Protection,Henan Agricultural University,Zhengzhou 450009,China
    3 Zhongyuan Research Center,Chinese Academy of Agricultural Sciences,Xinxiang,Henan 453004,China
  • Received:2024-01-30 Revised:2024-04-23 Online:2024-12-18 Published:2024-06-22
  • Contact: XU Chao, HOU Hui

Abstract:

The purpose of this study is to analyze the antagonistic activity of volatile organic compounds(VOCs)of Bacillus cereus strain G3-17 against Botryosphaeria dothidea,and to explore the biological control methods of apple ring rot. The plate-to-plate experiment showed that the volatiles of Bacillus cereus strain G3-17 at different concentrations could significantly inhibit the growth of Botryosphaeria dothidea. Headspace solid-phase microextraction-gas chromatography-mass spectrometry analysis showed that the strain G3-17 mainly secreted six VOCs. Among them,benzaldehyde had the best inhibitory effect on Botryosphaeria dothidea,with an inhibition rate of 57.24%-100.00% in the concentration range of 125-625 μL · L-1. Further results also showed that benzaldehyde treatment also destroyed the integrity of the cell membrane of Botryosphaeria dothidea. In addition,benzaldehyde treatment could induce the expression of apple fruit pathogenesis-related protein genes(MdPR1 and MdPR5). Benzaldehyde treatment also could effectively control apple ring rot caused by Botryosphaeria dothidea,and the control effects were 39.80%,84.77% and 90.67% at the concentrations of 125,250 and 500 μL · L-1,respectively. In summary,the volatiles of Bacillus cereus strain G3-17 and its main VOCs have good control potential against apple ring rot.

Key words: Bacillus cereus, apple ring rot, volatile organic compounds, benzaldehyde, biological control