[Free and conjugated forms of salicylic acid: content and role in potato].

Hydrolysis of conjugated forms of salicylic acid and accumulation of its free form was observed after infection of potato tubers (Solanum tuberosum L.) with an incompatible race of phytophthora or treatment with an elicitor (chitosan). Infection of tubers with a compatible race of the pathogen or treatment with a suppressor (laminarin) decreased both the degree of hydrolysis of conjugated forms of salicylic acid and the accumulation of its free form.

[Effect of systemic signaling molecules on the rate of spread of the immunizing effect of elicitors over potato tissues]. / Vozdeistvie sistemnykh signal'nykh molekul na skorost' rasprostraneniia po tkaniam kartofelia immuniziruiushchego éffekta élisitorov.

Mobile systemic signaling molecules (salicylic and jasmonic acids) enhance and accelerate the spread of systemic immunizing effect of elicitors (arachidonic acid and chitosan) over potato tuber tissues (Solanum tuberosum L.).

[Regulation of potato immune responses by laminarin]. / Reguliatsiia immunnykh otvetov kartofelia laminarinom.

Laminarin blocks potato immune responses by inhibiting the reaction of oversensitivity, formation of phytoalexins, wound repair, and the activity of proteinase inhibitors. It was found that laminarin exhibits antielicitor activity. Addition of salicylic acid to laminarin enhances its immunosuppressing effect, which becomes systemic.