Results: 22

Dinámica de la diversidad temporal de los hongos micorrícicos arbusculares de Larrea tridentata (Sesse & Mocino ex DC) Coville en un ecosistema semiárido

Rev. argent. microbiol; 50 (3), 2018
Los hongos micorrícicos arbusculares (HMA) de los ambientes áridos y semiáridos son importantes para el desarrollo de las plantas que crecen bajo estrés biótico y abiótico en áreas naturales o en agroecosistemas. Existe poca información sobre la diversidad temporal de los HMA en plantas perennes ...

Can Aspergillus fumigatus conidia cause false-positive results in the galactomannan enzyme immunoassay test?

Abstract INTRODUCTION: Several factors can cause false-positive results in the galactomannan (GM) test; however, others remain unknown. Presently, the impact of airborne contamination by Aspergillus conidia during enzyme-linked immunosorbent assay (ELISA) remains uninvestigated. METHODS: We studied 1...

Producción de unidades infectivas de Isaria fumosorosea (Hypocreales: Cordycipitaceae) a partir de aislados nativos del noreste de México mediante 3 estrategias de propagación

Rev. argent. microbiol; 50 (1), 2018
El objetivo del presente estudio fue evaluar la producción de blastosporas y conidios de diferentes aislados nativos de México del hongo entomopatógeno Isaria fumosorosea y de una cepa de colección mediante diferentes técnicas de propagación. En la producción de blastosporas se utilizaron 2 medios...

Production of native arbuscular mycorrhizal fungi inoculum under different environmental conditions

Braz. j. microbiol; 48 (1), 2017
Abstract In order to obtain an arbuscular mycorrhizal fungi (AMF) native inoculum from Sierra de Moa and determine the most appropriate conditions for its big scale production, four light and temperature combinations were tested in three plant species (Calophyllum antillanum, Talipariti elatum and Paspal...

Enrichment of arbuscular mycorrhizal fungi in a contaminated soil after rehabilitation

Braz. j. microbiol; 47 (4), 2016
Abstract Spore counts, species composition and richness of arbuscular mycorrhizal fungi, and soil glomalin contents were evaluated in a soil contaminated with Zn, Cu, Cd and Pb after rehabilitation by partial replacement of the contaminated soil with non-contaminated soil, and by Eucalyptus camaldulensis...

Selection and characterization of Beauveria spp. isolates to control the broad mite Polyphagotarsonemus latus (Banks, 1904) (Acari: Tarsonemidae)

Braz. j. biol; 76 (3), 2016
Abstract This study was performed under laboratory conditions to identify isolates of the fungus Beauveria spp. that can control Polyphagotarsonemus latus in the greenhouse and field. Thirty Beauveria spp. isolates were tested by spraying 1 mL conidia (1 × 108 conidia/mL) on pepper leaf discs containing...

Anti-fungal potential of ozone against some dermatophytes

Braz. j. microbiol; 47 (3), 2016
ABSTRACT Dermatophytes are classified in three genera, Epidermophyton, Microsporum and Trichophyton. They have the capacity to invade keratinized tissue to produce a cutaneous infection known as dermatophytoses. This investigation was performed to study the effect of gaseous ozone and ozonized oil on thr...

Arbuscular mycorrhizal fungi in Mimosa tenuiflora (Willd. ) Poir from Brazilian semi-arid

Braz. j. microbiol; 47 (2), 2016
Abstract Many plant species from Brazilian semi-arid present arbuscular mycorrhizal fungi (AMF) in their rhizosphere. These microorganisms play a key role in the establishment, growth, survival of plants and protection against drought, pathogenic fungi and nematodes. This study presents a quantitative an...

Ajuste de un método rápido para la cuantificación de suspensiones de esporas de Fusarium spp. en fitopatología
Adjustment of a rapid method for quantification of Fusarium spp. spore suspensions in plant pathology

Rev. argent. microbiol; 47 (2), 2015
La cámara de Neubauer es un método ampliamente utilizado para cuantificar suspensiones de esporas. Sin embargo, esta técnica requiere personal entrenado y un tiempo considerable. La espectrofotometría demostró ser un método rápido, simple y preciso para estimar la concentración de esporas de aisl...

Efeitos da temperatura e regime de luz sobre Corynespora cassiicola e da temperatura e período de molhamento foliar no desenvolvimento da mancha-alvo em acerola

Arq. Inst. Biol; 82 (), 2015
O presente estudo teve como objetivos: (i) determinar, in vitro, o efeito da temperatura sobre o crescimento micelial (10 a 35oC) e a germinação de conídios (10 a 45oC) de Corynespora cassiicola ; (ii) avaliar, in vitro , o efeito do regime de luz (luz contínua, fotoperíodo de 12 h e escuro) sobre o...