Data/hora: 05/06/2024 13:08:21

Biblioteca(s): | Embrapa Semiárido.
Data corrente: | 24/10/2013
Data da última atualização: | 24/10/2013
Autoria: | CAMPOS, M. A. da S.; SILVA, F. S. B.; MELO, A. M. Y.; MELO, N. F. de; PEDROSA, E. M. R.; MAIA, L. C.
Afiliação: | MARYLUCE ALBUQUERQUE DA SILVA CAMPOS, UPE; FÁBIO SÉRGIO BARBOSA DA SILVA, UPE; ADRIANA MAYUMI YANO MELO, UNIVASF; NATONIEL FRANKLIN DE MELO, CPATSA; ELVIRA MARIA RÉGIS PEDROSA, UFRPE; LEONOR COSTA MAIA, UFPE.
Título: | Responses of guava plants to inoculation with arbuscular mycorrhizal fungi in soil infested with Meloidogyne enterolobii.
Ano de publicação: | 2013
Fonte/Imprenta: | Plant Pathology Journal, v. 29, n. 3, p. 242-248, 2013.
Idioma: | Inglês
Conteúdo: | In the Northeast of Brazil, expansion of guava crops has been impaired by Meloidogyne enterolobii that causes root galls, leaf fall and plant death. Considering the fact that arbuscular mycorrhizal Fungi (AMF) improve plant growth giving protection against damages by plant pathogens, this work was carried out to select AMF efficient to increase production of guava seedlings and their tolerance to M. enterolobii. Seedlings of guava were inoculated with 200 spores of Gigaspora albida, Glomus etunicatum or Acaulospora longula and 55 days later with 4,000 eggs of M. enterolobii. The interactions between the AMF and M. enterolobii were assessed by measuring leaf number, aerial dry biomass, CO 2 evolution and arbuscular and total mycorrhizal colonization. In general, plant growth was improved by the treatments with A. longula or with G. albida. The presence of the nematode decreased arbuscular colonization and increased general enzymatic activity. Higher dehydrogenase activity occurred with the A. longula treatment and CO 2 evolution was higher in the control with the nematode. More spores and higher production of glomalin-related soil proteins were observed in the treatment with G. albida. The numbers of galls, egg masses and eggs were reduced in the presence of A. longula . Inoculation with this fungus benefitted plant growth and decreased nematode reproduction.
Palavras-Chave: | FMA; Fungos micorrízicos arbusculares; Guava; Meloidogyne enterolobii.
Thesagro: | Atividade Enzimática; Doença; Fungo; Goiaba; Psidium Guajava.
Categoria do assunto: | O Insetos e Entomologia
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (51003-1) - UPC - AP - DD -  -  -  - DIS