揭示生姜根茎腐烂病的复杂性:关注病原体之间的相互作用

IF 1.1 4区 农林科学 Q3 PLANT SCIENCES Journal of Phytopathology Pub Date : 2024-09-13 DOI:10.1111/jph.13392
Archana T.S, R. K. Mesta, M. P. Basavarajappa, K. C. Kiran Kumar
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引用次数: 0

摘要

根腐病对生姜种植构成严重威胁,它是由 Pythium aphanidermatum、Fusarium oxysporum、Ralstonia solanacearum、Sclerotium rolfsii 和 Meloidogyne incognita 等病原体的复杂相互作用引起的。病原体分别在播种后 75 天、105 天和 135 天接种,并以不同组合接种,以评估病害严重程度和症状发展。结果表明,在接种的各个阶段,R. solanacearum 的病害严重程度最高,症状发展最快,其次是 P. aphanidermatum、F. oxysporum、S. rolfsii 和 M. incognita。与单独接种相比,病原体联合接种会显著增加病害发生率和根茎腐烂率,这表明病原体之间存在协同作用。连续接种实验表明,M. incognita 的预感染加剧了病害的严重程度,突出了线虫在使植物易受二次感染方面的作用。
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Unravelling the Complexity of Ginger Rhizome Rot Disease: A Focus on Pathogen Interactions

Rhizome rot poses a significant threat to ginger cultivation, caused by a complex interaction of pathogens such as Pythium aphanidermatum, Fusarium oxysporum, Ralstonia solanacearum, Sclerotium rolfsii and Meloidogyne incognita. The pathogens were individually inoculated at 75, 105 and 135 days after planting (DAP), as well as in various combinations, to evaluate disease severity and symptom development. Results revealed that R. solanacearum exhibited the highest disease severity and fastest symptom development across all stages of inoculation, followed by P. aphanidermatum, F. oxysporum, S. rolfsii and M. incognita. The combined inoculation of pathogens significantly increased disease incidence and rhizome rot compared to individual inoculations, indicating synergistic interactions among the pathogens. Sequential inoculation experiments demonstrated that pre-infection by M. incognita exacerbated disease severity, highlighting the role of nematodes in predisposing plants to secondary infections.

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来源期刊
Journal of Phytopathology
Journal of Phytopathology 生物-植物科学
CiteScore
2.90
自引率
0.00%
发文量
88
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.
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