Статья

Naphthoquinones from Walnut Husk Residues Show Strong Nematicidal Activities against the Root-knot Nematode <i>Meloidogyne hispanica</i>

Carla MaleitaCFE−Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, PortugalIvânia EstevesCFE−Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, PortugalRita ChimCIEPQPF−Chemical Process Engineering and Forest Products Research Centre, Chemical Engineering Department, University of Coimbra, Rua Sílvio Lima, Pólo II, Pinhal de Marrocos, 3030-790 Coimbra, PortugalLuís FonsecaCFE−Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, PortugalMara E.M. BragaCIEPQPF−Chemical Process Engineering and Forest Products Research Centre, Chemical Engineering Department, University of Coimbra, Rua Sílvio Lima, Pólo II, Pinhal de Marrocos, 3030-790 Coimbra, PortugalIsabel AbrantesCFE−Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, PortugalHermínio C. de SousaCIEPQPF−Chemical Process Engineering and Forest Products Research Centre, Chemical Engineering Department, University of Coimbra, Rua Sílvio Lima, Pólo II, Pinhal de Marrocos, 3030-790 Coimbra, Portugal

2017en

ABI

Аннотация

Naphthoquinones exhibit important biological activities and are present in walnut husk residues in significant amounts. However, their potential as alternatives to synthetic nematicides has not been fully explored. This work aimed to assess the effects of pure naphthoquinones (juglone; 1,4-naphthoquinone; plumbagin) on the mortality of the root-knot nematode Meloidogyne hispanica second-stage juveniles (J2). Extracts from Juglans spp. walnut husks were characterized, and the effects of J. nigra extracts on attraction and life cycle of M. hispanica were evaluated. 1,4-Naphthoquinone was the most effective compound causing 42% J2 mortality at 50 ppm. The extract from in natura J. nigra walnut husks presented similar effects on J2 mortality to those observed for pure 1,4-naphthoquinone. The extract from dried husks was repellent and reduced nematode root penetration but did not affect reproduction. Therefore, walnut residues can be valorized as renewable sources of naphthoquinone-based products and potentially employed as bionematicides against Meloidogyne spp.

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Идентификаторы

DOI: 10.1021/acssuschemeng.7b00039

Цитирования и источники

Цитирований: 6Использованных источников: 0

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