Suppressive activity of some glucosinolate enzyme degradation products onPythium irregulare andRhizoctonia solani in sterile soil

Autor: Luca Lazzeri, Stefania Galletti, G. Baruzzi, Sandro Palmieri, Onofrio Leoni, Luisa M. Manici
Rok vydání: 2000
Předmět:
Zdroj: Pest Management Science. 56:921-926
ISSN: 1526-4998
1526-498X
Popis: Glucosinolate degradation products (GLDPs), mainly isothiocyanates, obtained by myrosinase-catalysed hydrolysis of glucosinolates (GLs), are an important group of natural bioactive substances. The fungitoxic activity of four GLDPs, chosen on the basis of their side-chain structures, was assayed against Pythium irregulare and Rhizoctonia solani. The effectiveness of the degradation products (DPs) of sinigrin (alkenyl GL), epi-progoitrin (hydroxy-alkenyl GL), glucoiberin and glucoerucin (thiofunctionalised GLs) in inhibiting P irregulare oospore germination and R solani soil colonisation were tested in a closed system, using an artificially infected soil. The fungitoxic activity of these GLDPs varied according to their side-chain structure. As in previous in vitro studies, the thiofunctionalised GLDPs were found the most effective, producing complete inhibition of P irregulare oospore germination (0.01 µmole g−1 soil) and R solani soil colonisation (0.5 µmole g−1 soil), but even sinigrin DP showed a fungitoxic activity higher than that of epi-progoitrin DP. © 2000 Society of Chemical Industry
Databáze: OpenAIRE
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