Fusarium oxysporum f. sp. cubense (Foc) causes Panama disease or Fusarium wilt of bananas. The association between soil-inhabiting fungi and nematodes can increase the severity of symptoms and suppress the resistance of plants to diseases. In this study, the interaction between Foc race 1 and Radopholus similis, a burrowing nematode that parasitizes banana plants, was analyzed using one moderately susceptible cultivar and seven resistant cultivars of banana. Two Foc isolates that differed in virulence were tested. The analyses of symptoms and stained fungal structures in the roots demonstrated that R. similis interacting with Foc in different inoculation sequences caused changes in symptom severity and the resistance pattern to Foc isolate 0801 (race 1) in cultivars ‘Terra Maranhão’, ‘BRS Pacovan Ken’, ‘BRS Vitória’, and ‘BRS Platina’. The data generated in this study have relevant implications for banana breeding programs in the classification of cultivars for durable resistance to Fusarium wilt and for understanding pathogen interactions during occurrence of the disease.

尖孢镰刀菌f。sp。cubense（Foc）引起巴拿马病或香蕉枯萎病。土壤真菌和线虫之间的联系会增加症状的严重性并抑制植物对疾病的抵抗力。在这项研究中，使用一个中度易感品种和七个抗性香蕉品种分析了Foc第1种族与Radopholus similis（寄生香蕉植物的穴居线虫）之间的相互作用。测试了两种毒力不同的Foc分离株。对根部症状和真菌结构染色的分析表明，R。similis在不同的接种顺序中与Foc相互作用会导致症状严重性的变化以及对'TerraMaranhão'，'BRS Pacovan Ken'，'BRSVitória'和'BRS Platina'品种的Foc分离株0801（种族1）的抗性模式的变化。这项研究中产生的数据对香蕉育种计划的分类具有重要意义，因为该品种可对镰刀菌枯萎病具有持久的抗性，并有助于理解疾病发生期间的病原体相互作用。