Inhibitory effect of the glucosinolate-myrosinase system on Phytophthora cinnamomi and Pythium spiculum

Francisco T. Arroyo, Rocío Rodríguez Arcos, Ana Jiménez Araujo, Rafael Guillén Bejarano, María José Basallote and Carmen Barrau
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Francisco T. Arroyo: IFAPA Centro Las Torres-Tomejil, Alcalá del Río (Sevilla), Spain
Rocío Rodríguez Arcos: Departamento de Fitoquímica de los Alimentos, Instituto de la Grasa, CSIC, Sevilla, Spain
Ana Jiménez Araujo: Departamento de Fitoquímica de los Alimentos, Instituto de la Grasa, CSIC, Sevilla, Spain
Rafael Guillén Bejarano: Departamento de Fitoquímica de los Alimentos, Instituto de la Grasa, CSIC, Sevilla, Spain
María José Basallote: IFAPA Centro Las Torres-Tomejil, Alcalá del Río (Sevilla), Spain
Carmen Barrau: IFAPA Centro Las Torres-Tomejil, Alcalá del Río (Sevilla), Spain

Plant Protection Science, 2019, vol. 55, issue 2, 93-101

Abstract: Glucosinolate extracts from sprouts of common Brassica nigra, B. juncea cv. Scala, B. carinata cv. Eleven, and Sinapis alba cv. Ludique were analysed by reversed phase high-performance liquid chromatography-diode array detection-mass spectrometry. The effect of the glucosinolate-myrosinase system on in vitro mycelial growth of Phytophthora cinnamomi Rands and Pythium spiculum B. Paul was assessed. Likewise, sinigrin and sinalbin monohydrate commercial standards were also tested. The extracts from B. carinata, which contained 159 mmol/g plant DW equivalent (85% sinigrin, 5% gluconapin, and 3% glucotropaeolin), were the most effective against Phytophthora and Pythium isolates used in this study. However, the extract from S. alba, which contained 1 180 mmol/g (100% sinalbin), did not inhibit the mycelial growth of the isolates tested. The use of the glucosinolate-myrosinase system provides important additional information to advance in the implementation of field application of brassicaceous amendments for the control of soil-borne pathogens.

Keywords: isothiocyanates; plant defence; Brassica; Phytophthora spp.; Pythium spp (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:55:y:2019:i:2:id:98-2018-pps

DOI: 10.17221/98/2018-PPS

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