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Salicylic acid content in cucumber plants infected with Pseudomonas lachrymans and tobacco necrosis virus



Salicylic acid content in cucumber plants infected with Pseudomonas lachrymans and tobacco necrosis virus



Acta Horticulturae ( 381): 375-378



Cucumber plants were inoculated either with P. lachrymans (P. syringae pv. lachrymans) or with tobacco necrosis necrovirus (TNV) on the lower leaf (leaf 1). Levels of salicylic acid (SA) were analysed in leaf 1 and in the upper leaf (leaf 2) at regular intervals up to 7 d post-inoculation. The level of free SA in leaf 1 24 h after inoculation with P. s. pv. lachrymans was up to 940 ng/g FW, representing a 21-fold increase compared with controls.

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