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Fig. 2 | BMC Biology

Fig. 2

From: Emergence of wheat blast in Bangladesh was caused by a South American lineage of Magnaporthe oryzae

Fig. 2

Symptoms of blast disease in spikes, leaves, and seeds of wheat in a farmer’s field in Jhenaidah in Bangladesh, and a micrograph showing two conidia of Magnaporthe oryzae. a A completely bleached wheat spike with traces of gray from blast sporulation at the neck (arrow) of the spike. b Complete bleaching of a wheat spike above the point (arrow) of infection. c Two completely bleached spikes with traces of gray (upper arrow) and a lesion (lower arrow) from blast sporulation at the base. d Typical eye-shaped lesion (arrow) and dark gray spots on a severely diseased wheat leaf. e Mild blast disease-affected slightly shriveled wheat seeds. f Severe blast-affected shriveled and pale wheat seeds. g A severely infected rachis with dark gray blast sporulation at the neck (arrow) and severely damaged spikelets. h Micrograph of two conidia isolated from the infected spike of wheat. Scale bars in e and f = 1 cm and in h = 10 μm

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