Panama disease pathogen in banana leaf, SEM

Numéro d’image : 13244945
Panama disease pathogen in banana leaf, SEM
Coloured scanning electron micrograph (SEM) of Fusarium oxysporum f.sp. cubense hyphae (blue) in banana (Musa sp.) leaf tissue. This fungus causes Panama disease of bananas. It has caused significant damage to commercially grown cultivars of banana throughout the world since it was first reported in Australia in 1876. The most common bananas now grown for export, the Cavendish bananas, are resistant to the Race 1 subtype of F. oxysporum, but are extremely susceptible to the Tropical Race 4 (TR4) subtype. TR4, which was previously only found in South East Asia, has spread to Australia and Colombia and threatens global banana production. Starch grains (brown) and oxalate crystals (white) are also seen within the cells. Infected banana tissue provided by Fernando Garcia-Bastidas, Keygene and Wageningen University, The Netherlands. Magnification: x750 when printed at 15cm wide.
Licence : Droits gérés
Crédit: Science Photo Library / EYE OF SCIENCE
Taille de l’image : 6400 px × 5525 px
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