Forest Pathology
Mostrando 1-6 de 6 artigos, teses e dissertações.
-
1. Podridão-do-lenho em plantios homogêneos de Acacia mangium.
O objetivo deste trabalho foi relatar a ocorrência da podridão-do-lenho em plantios homogêneos de Acacia mangium no Estado de Roraima. A observação dos sintomas iniciais em ferimentos de poda indica que a desrama artificial é um fator de predisposição. Estimativas realizadas em dois talhões comerciais constataram cerca de 8 e 39% de incidência da d
Pesquisa Agropecuária Brasileira. Publicado em: 2011
-
2. Fungos associados às sementes de espécies arbóreas da Mata Atlântica.
Amostras de sementes de quatro especies florestais nativas da Mata Atlantica - timbauva (Enterolobium forficata)e coracao-de-negro (Poecilanthe parviflora) - foram examinadas com o objetivo de identificar e de quantificar os fungos e o desenvolvimento das plantulas. Foram utilizados os metodos de papel de filtro e do sintoma em plantulas. Dentre os 20 fungos
Boletim de Pesquisa Florestal. Publicado em: 2011
-
3. Penetration and favorable conditions to infection of Cylindrocladium pteridis in eucalypt / Penetração e condições favoráveis à infecção de Cylindrocladium pteridis em eucalipto
The effects of inoculum concentration, duration of leaf wetness period, plant age, and stem position on the severity of leaf spot and defoliation caused by Cylindrocladium pteridis in eucalypts were assessed in greenhouse studies using two hybrid clones of Eucalyptus grandis x E. urophylla. The pattern of adhesion, germination, and penetration of the pathoge
Publicado em: 2007
-
4. Humoral and cell-mediated immune mechanisms in the production of pathology in avirulent Semliki Forest virus encephalitis.
Seven days after peripheral inoculation with an avirulent strain of Semliki Forest virus, the brains of CBA and nude mice exhibited a mononuclear inflammation and spongiform degeneration. Mice that had received cyclophosphamide (150 mg/kg) 24 h after infection showed no pathology until day 11. However, immunofluorescence studies of the brains of immunosuppre
-
5. Arbovirus of Marine Mammals: a New Alphavirus Isolated from the Elephant Seal Louse, Lepidophthirus macrorhini
A novel alphavirus was isolated from the louse Lepidophthirus macrorhini, collected from southern elephant seals, Mirounga leonina, on Macquarie Island, Australia. The virus displayed classic alphavirus ultrastructure and appeared to be serologically different from known Australasian alphaviruses. Nearly all Macquarie Island elephant seals tested had neutral
American Society for Microbiology.
-
6. Pathology and Epizootiology of Entomophaga maimaiga Infections in Forest Lepidoptera
The insect-pathogenic fungal pathogen Entomophaga maimaiga is endemic to northeastern Asia and was first found in North America in 1989. Due to repeated epizootics and spread within populations of the major forest defoliator in northeastern North America, the gypsy moth (Lymantria dispar), this pathogen has gained much notoriety. Although this pathogen was p
American Society for Microbiology.