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首页> 美国卫生研究院文献>Microbes and Environments >Evaluation of Suppressiveness of Soils Exhibiting Soil-Borne Disease Suppression after Long-Term Application of Organic Amendments by the Co-cultivation Method of Pathogenic Fusarium oxysporum and Indigenous Soil Microorganisms
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Evaluation of Suppressiveness of Soils Exhibiting Soil-Borne Disease Suppression after Long-Term Application of Organic Amendments by the Co-cultivation Method of Pathogenic Fusarium oxysporum and Indigenous Soil Microorganisms

机译：病原性尖孢镰刀菌与土著土壤微生物共培养方法对长期施用有机修正剂后土壤中土壤-伯恩病抑制的抑制性评价

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Preventive measures against soil-borne diseases need to be implemented before cultivation because very few countermeasures are available after the development of diseases. Some soils suppress soil-borne diseases despite the presence of a high population density of pathogens. If the suppressiveness of soil against soil-borne diseases may be predicted and diagnosed for crop fields, it may be possible to reduce the labor and cost associated with excessive disinfection practices. We herein evaluated the suppressiveness of soils in fields with the long-term application of organic amendments by examining the growth of pathogenic Fusarium oxysporum co-cultivated with indigenous soil microorganisms on agar plates. Soils treated with coffee residue compost or rapeseed meal showed suppressiveness against spinach wilt disease by F. oxysporum f. sp. spinaciae or spinach wilt and lettuce root rot diseases by F. oxysporum f. sp. spinaciae and F. oxysporum f. sp. lactucae, respectively, and the growth of pathogenic Fusarium spp. on agar plates was suppressed when co-cultured with microorganisms in a suspension from these soils before crop cultivation. These results indicate the potential of the growth degree of pathogenic F. oxysporum estimated by this method as a diagnostic indicator of the suppressiveness of soil associated with the inhabiting microorganisms. A correlation was found between the incidence of spinach wilt disease in spinach and the growth degree of F. oxysporum f. sp. spinaciae by this co-cultivation method, indicating that suppressiveness induced by organic amendment applications against F. oxysporum f. sp. spinaciae is evaluable by this method. The co-cultivation method may be useful for predicting and diagnosing suppressiveness against soil-borne diseases.
机译：耕作前必须采取预防土传疾病的措施，因为在病害发展后几乎没有对策。尽管存在高密度的病原体，但某些土壤抑制了土壤传播的疾病。如果可以预测并诊断出土壤对土壤传播疾病的抑制作用，并且可以针对作物田地进行诊断，则可以减少与过度消毒实践有关的人工和成本。我们在本文中通过检查与原生土壤微生物在琼脂平板上共同培养的病原性尖孢镰刀菌的生长情况，通过长期应用有机改良剂来评估田间土壤的抑制性。用咖啡渣堆肥或菜籽粉处理过的土壤表现出对F. oxysporum f。抑制菠菜枯萎病的抑制作用。 sp。棘孢F. oxysporum f。菠菜或菠菜枯萎和生菜根腐病。 sp。菠菜和镰刀菌f。 sp。乳酸菌和致病性镰刀菌属菌种的生长。当与微生物在土壤中悬浮培养的悬浮液共培养时，琼脂平板上的细菌被抑制。这些结果表明通过该方法估计的病原性氧化枯萎菌的生长程度具有作为与居住微生物相关的土壤抑制性的诊断指标的潜力。在菠菜中出现菠菜枯萎病的发病率与青枯菌的生长程度之间存在相关性。 sp。通过这种共培养方法得到的棘孢菌，表明通过有机修饰对尖孢镰刀菌f的抑制作用。 sp。通过这种方法可以评估出菠菜。共培养方法对于预测和诊断对土壤传播疾病的抑制作用可能是有用的。

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