Identification and characterization of non-pathogenic Fusarium oxysporum capable of increasing and decreasing Fusarium wilt severity |
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| Institution: | 1. School of Integrative Biology, The University of Queensland, Level 5 John Hines Building (62), St Lucia, QLD 4072, Australia;2. Department of Primary Industries and Fisheries, Indooroopilly, Australia;1. Maxwell H. Gluck Equine Research Center, Department of Veterinary Science, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY, USA;2. GeneReach USA, Lexington, MA, USA;1. Chiang Mai University, Department of Entomology and Plant Pathology, Chiang Mai 50200, Thailand;2. NBD Research Co., Ltd., 91/2 Rathburana Rd., Lampang 52000, Thailand;1. Department of Biological Sciences, Masinde Muliro University of Science and Technology (MMUST), P.O. Box 190-50100, Kakamega, Kenya;2. Department of Phytosanitary and Biosafety, Kenya Plant Health Inspectorate Services (KEPHIS), P.O. Box 2129, Embu, Kenya;3. Department of Crop Protection, Kenya Agricultural Research Institute (KARI), P.O. Box 169-50100, Kakamega, Kenya;4. The Real IPM Company, P.O. Box 4001-01002 Madaraka, Thika, Kenya;5. Department of Botany and Agricultural Biotechnology, Faculty of Agriculture, University of Khartoum, P.O. Box 32-13314, Khartoum North, Sudan;6. International Institute of Tropical Agriculture (IITA) Headquarters, PMB 5320, Ibadan, Oyo State, Nigeria;7. International Institute of Tropical Agriculture (IITA) Regional Hub, Plot 25, Mikocheni Light Industrial Area, Mwenge CocoCola Road, Mikocheni B, P.O. Box 34441, Dar es Salaam, Tanzania;1. Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, China;2. Department of Plant Pathology, North Dakota State University, Fargo, ND 58108, USA;3. Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;1. Pesticide Science Laboratory, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece;2. Hellenic Agricultural Organization “Demeter”, Institute for Olive Tree, Subtropical Plants and Viticulture, Agrokipio-Souda, 73164 Chania, Greece;3. Department of Biochemistry and Biotechnology, University of Thessaly, Biopolis, 41500, Larissa, Greece;1. Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000-00200, Nairobi, Kenya;2. International Institute of Tropical Agriculture, P.O. Box 7878, Kampala, Uganda |
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| Abstract: | Fusarium wilt of banana is a potentially devastating disease throughout the world. Options for control of the causal organism, Fusarium oxysporum f.sp. cubense (Foc) are limited. Suppressive soil sites have previously been identified where, despite the presence of Foc, Fusarium wilt does not develop. In order to understand some aspects of this disease suppression, endophytic Fusarium oxysporum isolates were obtained from banana roots. These isolates were genetically characterized and compared with an isolate of Fusarium oxysporum previously identified as being capable of suppressing Fusarium wilt of banana in glasshouse trials. Three additional isolates were selected for glasshouse trials to assess suppression of Fusarium wilt in two different cultivars of banana, Cavendish and Lady Finger. One isolate (BRIP 29089) was identified as a potential biocontrol organism, reducing the disease severity of Fusarium wilt in Lady Finger and Cavendish cultivars. Interestingly, one isolate (BRIP 45952) increased Fusarium wilt disease severity on Cavendish. The implications of an isolate of Fusarium oxysporum, non-pathogenic on banana, increasing disease severity and the potential role of non-pathogenic isolates of Fusarium oxysporum in disease complexes are discussed. |
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