Articles
SALICYLIC ACID CONTENT IN CUCUMBER PLANTS INFECTED WITH PSEUDOMONAS LACHRYMANS AND TOBACCO NECROSIS VIRUS
Article number
381_47
Pages
375 – 378
Language
Abstract
Cucumber plants were inoculated either with Pseudomonas lachrymans or with tobacco necrosis virus (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 days post-infection.
The level of free SA in leaf 1 24h after infection with P. lachrymans was to 940 ng/g FW, representing a 21-fold increase compared to controls.
In leaf 2 free SA increased 5-fold (to 320 ng/g FW) 48 h post-inoculation.
Inoculation with TNV gave a lower and delayed increase of SA compared to infection with P. lachrymans.
Authors
W. Mölders, P. Meuwly, K. Summermatter, J.-P. Métraux
Keywords
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