What is the causative agent of the "Panama disease" affecting bananas?
['Fusarium oxysporum f. sp. cubense (Foc), the causal agent of Fusarium wilt (Panama disease), is one of the most devastating diseases of banana (Musa spp.)', 'avendish, the most widely grown banana cultivar, is relatively resistant to Race 1 of Fusarium oxysporum f. sp. cubense (Foc1) which caused widespread Panama disease during the first half of the 20th century but is susceptible to Tropical Race 4 of Foc (Foc TR4) which is threatening world banana production. ', 'Fusarium oxysporum f. sp. cubense race 4 (FOC), the causal agent of Panama disease in banana,', 'Fusarium oxysporum f.sp. cubense, a causative agent of Panama disease', 'Fusarium wilt of banana (also known as Panama disease) is caused by Fusarium oxysporum f. sp. cubense', ' inoculated with Fusarium oxysporum f.sp. cubense (FOC), Race 4, the causal agent of Panama disease', 'the fungus causing Panama disease of banana', 'Panama disease of banana, caused by the fungus Fusarium oxysporum f. sp. cubense, is a serious constraint both to the commercial production of banana and cultivation for subsistence agriculture']
['Panama disease of banana is caused by the fungus Fusarium oxysporum f. sp. cubense.']
['Fusarium oxysporum f. sp. cubense']