Screening of potential biofumigant plants against Quercus root rot caused by Phytophthora cinnamomi

Screening of potential biofumigant plants against Quercus root rot caused by Phytophthora cinnamomi

Trabajo presentado en la 7th Meeting Integrated Protection in Oak Forests, celebrada en Isle sur le Sorgue (Francia) del 7 al 11 de octubre de 2013.

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Main Authors: Ríos, Pedro, Obregón, Sara, Haro Bailón, Antonio de, Sánchez, María Esperanza
Format: comunicación de congreso biblioteca
Published: 2013-10
Subjects:Chlamydospores, Glucosinolates, Biofumigation, Rangeland, Oak decline,
Online Access:http://hdl.handle.net/10261/98313
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spelling dig-ias-es-10261-983132018-08-01T10:17:12Z Screening of potential biofumigant plants against Quercus root rot caused by Phytophthora cinnamomi Ríos, Pedro Obregón, Sara Haro Bailón, Antonio de Sánchez, María Esperanza Chlamydospores Glucosinolates Biofumigation Rangeland Oak decline Trabajo presentado en la 7th Meeting Integrated Protection in Oak Forests, celebrada en Isle sur le Sorgue (Francia) del 7 al 11 de octubre de 2013. The in vitro effectiveness of 15 potential biofumigant species belonging to genera Sinapis, Diplotaxis, Cardaria, Brassica, Eruca, Lepidium, Armoracia, and Erucastrum, has been tested to inhibit mycelial growth of Phytophthora cinnamomi, the main biological agent causing Quercus root rot in oak-rangeland ecosystems in southern Spain. The above-ground parts of the selected plants were harvested, frozen and lyophilized. Cultures of the pathogen were exposed to volatile compounds released by the rehydrated plant material at different doses. Plants belonging to Diplotaxis, Armoracia and Brassica genera reached a total inhibition of the mycelial growth, showing a fungicidal action against the pathogen. A high degree of inhibition (> 80%) was also obtained with Lepidium, Eruca, Erucastrum and Sinapis, but these plants only exhibited a fungistatic action. Two species whit different glucosinolate profiles, Diplotaxis erucoides (rich in Sinigrin) and Lepidium sativum (rich in aromatic GSLs), were tested to check their ability to reduce the viability of the pathogen in the soil. For soil experiments, natural soil from a rangeland was artificially infested with resistant spores of P. cinnamomi (650 chlamydospores per gram of dry soil) and transferred to plastic containers containing the biofumigant materials. All containers were incubated at 25º C in the dark. After 1 day, 4 days or 8 days of incubation, soils were analysed by plating soil-water suspensions in selective NARPH medium and resulting P. cinnamomi colonies counted. Diplotaxis erucoides was the most effective biofumigant, significantly decreasing the viability of resistant spores of P. cinnamomi in soil. Plants containing high levels of the aliphatic GSL Sinigrin should be considered as potential biofumigants to be used in infested soils in order to prevent the oak root disease. This work was financed by the project AGR-6501 (Junta de Andalucía, Spain) and project LIFE+ 2011 BIO/ES/000726 (European Union). Peer Reviewed 2014-06-13T07:25:53Z 2014-06-13T07:25:53Z 2013-10 2014-06-13T07:25:53Z comunicación de congreso http://purl.org/coar/resource_type/c_5794 7th Meeting Integrated Protection in Oak Forests (2013) http://hdl.handle.net/10261/98313 open
institution IAS ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-ias-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IAS España
topic Chlamydospores
Glucosinolates
Biofumigation
Rangeland
Oak decline
Chlamydospores
Glucosinolates
Biofumigation
Rangeland
Oak decline
spellingShingle Chlamydospores
Glucosinolates
Biofumigation
Rangeland
Oak decline
Chlamydospores
Glucosinolates
Biofumigation
Rangeland
Oak decline
Ríos, Pedro
Obregón, Sara
Haro Bailón, Antonio de
Sánchez, María Esperanza
Screening of potential biofumigant plants against Quercus root rot caused by Phytophthora cinnamomi
description Trabajo presentado en la 7th Meeting Integrated Protection in Oak Forests, celebrada en Isle sur le Sorgue (Francia) del 7 al 11 de octubre de 2013.
format comunicación de congreso
topic_facet Chlamydospores
Glucosinolates
Biofumigation
Rangeland
Oak decline
author Ríos, Pedro
Obregón, Sara
Haro Bailón, Antonio de
Sánchez, María Esperanza
author_facet Ríos, Pedro
Obregón, Sara
Haro Bailón, Antonio de
Sánchez, María Esperanza
author_sort Ríos, Pedro
title Screening of potential biofumigant plants against Quercus root rot caused by Phytophthora cinnamomi
title_short Screening of potential biofumigant plants against Quercus root rot caused by Phytophthora cinnamomi
title_full Screening of potential biofumigant plants against Quercus root rot caused by Phytophthora cinnamomi
title_fullStr Screening of potential biofumigant plants against Quercus root rot caused by Phytophthora cinnamomi
title_full_unstemmed Screening of potential biofumigant plants against Quercus root rot caused by Phytophthora cinnamomi
title_sort screening of potential biofumigant plants against quercus root rot caused by phytophthora cinnamomi
publishDate 2013-10
url http://hdl.handle.net/10261/98313
work_keys_str_mv AT riospedro screeningofpotentialbiofumigantplantsagainstquercusrootrotcausedbyphytophthoracinnamomi
AT obregonsara screeningofpotentialbiofumigantplantsagainstquercusrootrotcausedbyphytophthoracinnamomi
AT harobailonantoniode screeningofpotentialbiofumigantplantsagainstquercusrootrotcausedbyphytophthoracinnamomi
AT sanchezmariaesperanza screeningofpotentialbiofumigantplantsagainstquercusrootrotcausedbyphytophthoracinnamomi
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