寒旱农业科学2024，Vol.3Issue(2)：167-173,封3,8.DOI:10.3969/j.issn.2097-2172.2024.02.013
贝莱斯芽孢杆菌BQ对党参根腐病病原菌抑制效应初探
Evaluation on the Control Effects of Bacillus velezensis BQ against Codonopsis pilosula Root Rot
摘要
Abstract
Bacillus velezensis BQ was regarded as the newly discovered potential biocontrol bacteria,and its control effects on root disease of Codonopsis pilosula was studied by the dual confrontation test,spore germination,biological control mechanism and in vitro control test.The results of the dual confrontation test showed that Bacillus velezensis BQ could obviously inhibit the growth of Fusarium oxysporum DS,the mycelium growth inhibition rate reached 50.55%,and the mycelium in the confrontation area was obviously deformed.The results of spores germination showed that the metabolites of Bacillus velezensis BQ could effectively inhibit the spores germination of pathogen DS.The metabolites of Bacillus velezensis BQ could increase the permeability of cell membrane of pathogenic bacteria DS,which led to the increase of nucleic acid release and cell rupture to death.In vitro control results showed that Bacillus velezensis BQ had a therapeutic effect of 46.13%and a preventive effect of 63.62%on Codonopsis pilosula root rot.Bacillus velezensis BQ has the potential to control Codonopsis pilosula root rot and can be developed as a biological control agent.关键词
党参/贝莱斯芽孢杆菌/根腐病病原菌/尖孢镰孢菌/生物防治/抑制效应Key words
Codonopsis pilosula/Bacillus velezensis/Root rot pathogen/Fusarium oxysporum/Biological control/Inhibiting effect分类
生物科学引用本文复制引用
王馨芳,张婉霞,史美玲,张梓坤,寇志安,田永强..贝莱斯芽孢杆菌BQ对党参根腐病病原菌抑制效应初探[J].寒旱农业科学,2024,3(2):167-173,封3,8.基金项目
甘肃省教育厅产业项目(2022CYZC-39) （2022CYZC-39）
青海省中央引导地方专项(2023ZY019) （2023ZY019）
甘肃省重点研发项目(23YFNA0035) （23YFNA0035）
嘉峪关市重点研发项目(22-25). （22-25）
