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toddler t-shirts cavendish banana toddler t-shirts cells toddler t-shirts fungus toddler t-shirts fusarium toddler t-shirts fusarium oxysporum toddler t-shirts hyphae toddler t-shirts hyphen toddler t-shirts micrograph toddler t-shirts pest toddler t-shirts plant toddler t-shirts section toddler t-shirts sem toddler t-shirts starch grains toddler t-shirts tr4 toddler t-shirts

photographs cavendish banana photos cells photos fungus photos fusarium photos fusarium oxysporum photos hyphae photos hyphen photos micrograph photos pest photos plant photos section photos sem photos starch grains photos tr4 photos

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This scanning electron micrograph shows the fungus Fusarium oyxsporum f.sp. cubense (yellow), within the cells of a sectioned pseudostem of cavendish banana plant. The section also shows starch grains (grey) and oxalate crystals within the cells. Fusarium o. is the causal agent of the Panama disease of bananas. Cavendish bananas are resistant to the Race 1 but extremely susceptible to the Tropical Race 4 (TR4). TR4 is spreading and has been reported 2019 for the first time in the American continent where major banana producers are located. TR4 threatens the global banana production. The infected banana stem were provided by the researcher Fernando Garcia-Bastidas who does research at Keygene and Wageningen University. Scanning electron microscope, magnification 1200x (at 15 cm image width).