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Open AccessArticle

Allelopathic Effects of Three Herb Species on Phytophthora cinnamomi, a Pathogen Causing Severe Oak Decline in Mediterranean Wood Pastures

1
Centro de Investigaciones Científicas y Tecnológicas de Extremadura (CICYTEX)/Instituto del Corcho, la Madera y el Carbón Vegetal (ICMC), Junta de Extremadura, Pol. Ind. El Prado, C/Pamplona s/n, 06800 Mérida, Spain
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Instituto de Investigación de la Dehesa (INDEHESA), Universidad de Extremadura (UEX), Av. Virgen del Puerto s/n, 10600 Plasencia, Spain
3
Instituto Nacional de Investigação Agrária e Veterinária (INIAV, IP), Quinta do Marquês, 2784-505 Oeiras, Portugal
*
Author to whom correspondence should be addressed.
Academic Editor: Fred O. Asiegbu
Forests 2021, 12(3), 285; https://doi.org/10.3390/f12030285
Received: 10 December 2020 / Revised: 22 February 2021 / Accepted: 25 February 2021 / Published: 2 March 2021
The ability of three herbaceous plants (Diplotaxis tenuifolia (L.) DC., Eruca vesicaria L. and Raphanus raphanistrum L.) from Iberian wood pastures to reduce Phytophthora cinnamomi Rands pathogen populations through allelopathic relationships is studied. The inhibitory capacity of their aqueous root extracts (AREs) on mycelial growth and production of P. cinnamomi reproductive structures is analysed in vitro. In addition, Quercus seedlings were grown in infested by P. cinnamomi-soils and with the presence or absence of allelopathic and susceptible herb species to the pathogen to assess the defensive chemical response of Quercus seedlings through their leaf phenolic compounds. Results show a strong inhibitory capacity of AREs on P. cinnamomi activity in vitro and a protective effect of these herb species on Quercus plants against P. cinnamomi in vivo. D. tenuifolia would be especially suited for biological control in the pathogen suppression. View Full-Text
Keywords: allelopathy; biocontrol; dehesa and montado’s herb species; Phytophthora cinnamomi; Quercus decline allelopathy; biocontrol; dehesa and montado’s herb species; Phytophthora cinnamomi; Quercus decline
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MDPI and ACS Style

Rodríguez-Romero, M.; Godoy-Cancho, B.; Calha, I.M.; Passarinho, J.A.; Moreira, A.C. Allelopathic Effects of Three Herb Species on Phytophthora cinnamomi, a Pathogen Causing Severe Oak Decline in Mediterranean Wood Pastures. Forests 2021, 12, 285. https://doi.org/10.3390/f12030285

AMA Style

Rodríguez-Romero M, Godoy-Cancho B, Calha IM, Passarinho JA, Moreira AC. Allelopathic Effects of Three Herb Species on Phytophthora cinnamomi, a Pathogen Causing Severe Oak Decline in Mediterranean Wood Pastures. Forests. 2021; 12(3):285. https://doi.org/10.3390/f12030285

Chicago/Turabian Style

Rodríguez-Romero, Manuela; Godoy-Cancho, Belén; Calha, Isabel M.; Passarinho, José A.; Moreira, Ana C. 2021. "Allelopathic Effects of Three Herb Species on Phytophthora cinnamomi, a Pathogen Causing Severe Oak Decline in Mediterranean Wood Pastures" Forests 12, no. 3: 285. https://doi.org/10.3390/f12030285

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