Physicochemical and biological properties of the coffee (Coffea arabica) rhizosphere suppress the root-knot nematode Meloidogyne exigua

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorBotelho, Alex Oliveira-
Autor(es): dc.creatorCampos, Vicente Paulo-
Autor(es): dc.creatorSilva, Julio Carlos Pereira da-
Autor(es): dc.creatorFreire, Eduardo Souza-
Autor(es): dc.creatorPinho, Renata Silva Canuto de-
Autor(es): dc.creatorBarros, Aline Ferreira-
Autor(es): dc.creatorOliveira, Denilson Ferreira-
Data de aceite: dc.date.accessioned2026-02-09T12:27:03Z-
Data de disponibilização: dc.date.available2026-02-09T12:27:03Z-
Data de envio: dc.date.issued2020-03-27-
Data de envio: dc.date.issued2020-03-27-
Data de envio: dc.date.issued2019-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/39504-
Fonte completa do material: dc.identifierhttps://www.tandfonline.com/doi/abs/10.1080/09583157.2019.1670781?journalCode=cbst20-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1161582-
Descrição: dc.descriptionWe investigated the properties of rhizospheric soils infested with root-knot nematode (RKN) Meloidogyne exigua in 17 coffee (Coffea arabica) farms from the Southern region of Minas Gerais, Brazil. Physicochemical (pH, clay and organic matter) and biological properties (RKN parasites and microbiota volatile toxicity on M. exigua) were correlated with the number of second-stage juveniles (J2) and the egg hatching of M. exigua extracted from those rhizospheres. In the five most suppressive farms, the number of J2 was less than 50/100 g of soil and the egg hatching was significantly low. The bacterium Pasteuria penetrans was found in four of the most suppressive farms with an average of 30% of J2 infected with endospores. By using in vitro experiments the microbiota volatiles emitted from the most suppressive soils killed more than 83% of the J2. Additionally, volatiles produced by Fusarium oxysporum, Cladosporium sp. and Syncephalastrum sp. isolated from M. exigua eggs, significantly killed the J2. Identification of nematicidal compounds from the soils by GC-MS supported the strong involvement of the microbiota volatile toward RKN suppressiveness. Clay percentage and pH were similar in farms with the most suppressive soils (42.5% and 6.6%, respectively). Finally, the most suppressive soils came from farms with the highest coffee bean yields. Collectively, these results suggest the strong involvement of parasitic microorganisms, clay percentage and the pH suppressing RKN in soils from the major coffee production region in Brazil, and that volatiles emitted from total microbiota and exclusively from egg-isolated fungi are toxic to M. exigua.-
Idioma: dc.languageen-
Publicador: dc.publisherTaylor & Francis-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceBiocontrol Science and Technology-
Palavras-chave: dc.subjectPlant-parasitic nematodes-
Palavras-chave: dc.subjectAbiotic soil activity-
Palavras-chave: dc.subjectAntagonist microbiota-
Palavras-chave: dc.subjectNematicidal compounds-
Palavras-chave: dc.subjectRoot-knot nematode-
Palavras-chave: dc.subjectNematóides parasitas de plantas-
Palavras-chave: dc.subjectAtividade abiótica do solo-
Palavras-chave: dc.subjectCompostos nematicidas-
Palavras-chave: dc.subjectNematoide das galhas-
Título: dc.titlePhysicochemical and biological properties of the coffee (Coffea arabica) rhizosphere suppress the root-knot nematode Meloidogyne exigua-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

Não existem arquivos associados a este item.