Influence of Ginsenosides on the Pathogenicity of Ilyonectria spp.

IF 1.1 4区农林科学 Q3 PLANT SCIENCES

Journal of Phytopathology Pub Date : 2025-07-10 DOI:10.1111/jph.70129

Anka Colo, Mark A. Bernards

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Abstract

Commercial cultivation of American ginseng (Panax quinquefolius L.) suffers from ginseng replant disease (GRD) when planted in a former ginseng garden. GRD typically manifests as a severe root rot due to the fungus Ilyonectria mors-panacis (A.A. Hildebr.) A. Cabral & Crous. Ginsenosides released to the soil by ginseng are thought to contribute to GRD mainly through the alteration of soil microbial communities. However, ginsenosides do not persist in ginseng garden soil post-harvest, suggesting that they are not direct contributors during GRD. Instead, ginsenosides can alter the virulence of Ilyonectria spp., specifically I. rufa A. Cabral & Crous, toward ginseng roots when pre-exposed to ginsenosides in vitro. Although I. rufa infection has not been previously implicated in GRD, a similar mechanism may occur in I. mors-panacis, thereby suggesting that ginsenosides may contribute to establishing the GRD state. Additionally, while various Ilyonectria isolates were able to metabolise select ginsenosides, this did not correlate with virulence.

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人参皂苷对大肠杆菌致病性的影响。

商业种植的西洋参（Panax ququefolius L.）在以前的人参花园种植时遭受人参再植病（GRD）。GRD通常表现为严重的根腐病，这是由于真菌的感染（A.A. hildebb）。A. Cabral &；Crous。人参释放到土壤中的人参皂苷被认为主要通过改变土壤微生物群落来促进GRD。然而，人参皂苷不会在收获后的人参花园土壤中持续存在，这表明它们不是GRD期间的直接贡献者。相反，人参皂苷可以改变伊氏菌的毒力，特别是伊氏菌的毒力。当预先暴露于人参皂苷时，对人参根的影响。虽然以前没有发现芦花蓟马感染与GRD有关，但在芦花蓟马中可能存在类似的机制，从而表明人参皂苷可能有助于建立GRD状态。此外，虽然各种大肠杆菌分离株能够代谢选定的人参皂苷，但这与毒力无关。

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来源期刊

Journal of Phytopathology 生物-植物科学

CiteScore

2.90

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Journal of Phytopathology publishes original and review articles on all scientific aspects of applied phytopathology in agricultural and horticultural crops. Preference is given to contributions improving our understanding of the biotic and abiotic determinants of plant diseases, including epidemics and damage potential, as a basis for innovative disease management, modelling and forecasting. This includes practical aspects and the development of methods for disease diagnosis as well as infection bioassays. Studies at the population, organism, physiological, biochemical and molecular genetic level are welcome. The journal scope comprises the pathology and epidemiology of plant diseases caused by microbial pathogens, viruses and nematodes. Accepted papers should advance our conceptual knowledge of plant diseases, rather than presenting descriptive or screening data unrelated to phytopathological mechanisms or functions. Results from unrepeated experimental conditions or data with no or inappropriate statistical processing will not be considered. Authors are encouraged to look at past issues to ensure adherence to the standards of the journal.