Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (6): 1227-1235.DOI: 10.3969/j.issn.1004-1524.2022.06.13

• Plant protection • Previous Articles     Next Articles

Antifungal effect of Camellia seed cake on root rot pathogens of Astragalus membranaceus and Panax notoginseng

YANG Xiujuan1(), LI Weiya1, LI Caimiao1, CHENG Bijun1, GAO Fen2, ZHAO Jun3   

  1. 1. School of Public Heath, Shanxi Medical University, Taiyuan 030001, China
    2. Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China
    3. School of Geography, Nanjing Normal University, Nanjing 210023, China
  • Received:2021-09-13 Online:2022-06-25 Published:2022-06-30

Abstract:

The root rot disease of Astragalus membranaceus and Panax notoginseng are increasingly serious which have restricted their yield and quality. To investigate the effect of water extract and volatile organic compounds of Camellia seed cake on root rot fungal pathogens of A. membranaceus and P. notoginseng, six dominant root rot fungal pathogens were used for testing, respectively. 6 strains of dominant pathogenic fungi from Astragalus membranaceus and Panax notoginseng were cultured by plate inoculation method, and the inhibition rate was calculated by measuring the diameter of colony every day. 2 g∙L-1 water extract of Camellia seed cake showed significant inhibition on A. membranaceus root rot pathogens Fusarium acuminatum, Fusarium solani and Fusarium oxysporum, and inhibition rates were 52.08%, 20.89% and 41.98%, respectively. 5 g∙L-1 water extract of Camellia seed cake showed significant inhibition on P. notoginseng root rot pathogens F. solani, F. oxysporum and Ilyonectria sp., and inhibition rates were 25.31 %, 30.51% and 13.33%, respectively. 50 g∙L-1 volatile organic compounds of Camellia seed cake showed inhibition on P. notoginseng root rot pathogens F. oxysporum, F. solani, and Ilyonectria sp., and inhibition rates were 60.16%, 52.16% and 40.47%, respectively. Tea saponin and five volatile organic compounds of Camellia seed cake showed significant inhibitory effects on the six fungi pathogens, of which 1-octen-3-ol and 2-methylbutyric acid showed the strongest fungistatic ability. This study layed a solid foundation for the effective prevention and control of Chinese herbs root rot disease by Camellia seed cake.

Key words: root rot pathogens, Camellia seed cake, water extract, volatile organic compounds, inhibition rate

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