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Induction of HR on tobacco leaves. Ea1/79, Et1/99, Et2/99 and Et4/99 were cultured in inducing medium and produced local necrotic HR lesions (right) in a leaf of cultivar ‘SR1’. No hypersensitive response was found for E. billingiae Eb661 or with the E. tasmaniensis strains Et1/99, Et2/99 and Et4/99 without conditioning in IM (left).
