Fusariose do abacaxizeiro no Pará

Verzignassi, J. R.; Santos, Maria de Fátima; Matos, A. P. de; Benchimol, R. L.; Poltronieri, L. S.

doi:10.1590/s0100-54052009000400014

Cited by 5 publications

(3 citation statements)

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“…The seedlings used in this pineapple field were selected from other plantations of the same farmer. Such seedlings may have served as an inoculation mechanism for this pathogen in the new planting area because F. guttiforme can infect the whole plant and some seedlings lightly infected by the fungus may not have been identified by the farmers and acted as a source of the initial inoculum in the new cultivation areas (Verzignassi et al, 2009;Oliveira et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Effect of temperature and photoperiod on the development of fusariosis in pineapples

Ferreira¹,

Sales²,

Araújo³

2015

Afr. J. Agric. Res.

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We examined the incidence of fusariosis in Montes Claros-MG and determined the effect of temperature and photoperiod on the development of Fusarium guttiforme. Four family production units were investigated, from which four isolates of F. guttiforme were isolated. For each isolate, two experiments were set up to assess mycelial growth for 144 h in environments with different temperatures and either a 12 h photoperiod or continuous darkness. To evaluate the development of isolates of F. guttiforme, we used a portion sub-divided randomized block design. The number of conidia produced by each isolate was counted according to the above-mentioned conditions. All production units had occurrence rates ranging from 12.2 to 64.4%. The fungal isolates showed a higher mycelial growth rate when incubated at 25°C under a 12 h photoperiod. However, the production of conidia varied depending on the temperature and on the isolate. With these overall results better understand how the spread of this fungus occurred so quickly. We may use this information to suggest management practices that reduce the incidence of pineapple fusariosis.

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Section: Resultsmentioning

confidence: 99%

Effect of temperature and photoperiod on the development of fusariosis in pineapples

Ferreira¹,

Sales²,

Araújo³

2015

Afr. J. Agric. Res.

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“…Fusariosis is the main disease of pineapple in Brazil, which was reported for the first time in the State of São Paulo by Kimati and Tokeshi (1964). Fusariosis is caused by the fungus Fusarium guttiforme (NIREMBERG;O'DONNELL, 1998), which enters host plants through natural openings or injuries in cuttings, fruits, leaves and roots, causing losses of 30 to 40% of fruits and 20% of cuttings (VERZIGNASSI et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

METHODS FOR INOCULATION WITH Fusarium guttiforme AND GENETIC RESISTANCE OF PINEAPPLE (Ananas comosus var. comosus)

et al. 2017

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-The objective of this work was to evaluate Fusarium guttiforme inoculation methods and genetic resistance of pineapple accessions. Thus, three experiments were conducted: pathogen inoculation of different leaf types (B, D and F) of pineapple (1), pathogen inoculation of pineapple cuttings and detached D leaves (2), and identification of resistance to fusariosis in 19 pineapple accessions (3) sampled in the State of Mato Grosso, Brazil. The cultivars Pérola (susceptible to fusariosis) and BRS-Vitória (resistant to fusariosis) were used as controls. The fusariosis severity was evaluated at 10, 15, 20, 25 and 30 days after inoculation with F. guttiforme. The lesion diameters (severity level) were used in order to calculate the area under the disease progress curve (AUDPC). The inoculation of detached D leaves was the most efficient, fast and inexpensive method, and the one that most satisfactorily reproduced the disease symptoms. The period of 10 to 20 days after inoculation of the D detached leaves with the pathogen is the most suitable to evaluate the resistance of pineapple accessions to fusariosis. The lowest lesion area and AUDPC was found in the accession 1, in all evaluations. Thus, the accession 1 can be used in pineapple breeding programs for resistance to fusariosis.Keywords: Ananas comosus var. comosus. Genetic resistance. Fusariosis. MÉTODOS DE INOCULAÇÃO DE Fusarium guttiforme E RESISTÊNCIA GENÉTICA EM ABACAXIZEIROS (Ananas comosus var. comosus)RESUMO -Objetivou-se avaliar métodos de inoculação de Fusarium guttiforme e a resistência genética em acessos de abacaxizeiro. Para isso, foram realizados três experimentos, a saber: 1-inoculações em folhas de abacaxizeiro dos tipos B, D e F; 2-inoculações em folhas "D" destacadas e em mudas de abacaxizeiro e 3-identificação de resistência à fusariose em 19 acessos de abacaxizeiros coletados no estado de Mato Grosso. As cultivares Pérola (suscetível à fusariose) e BRS-Vitória (resistente à fusariose) foram utilizadas como testemunhas. As avaliações de severidade da fusariose foram conduzidas aos 10, 15, 20, 25 e 30 dias, após inoculação de F. guttiforme. Foram utilizados os diâmetros das lesões (quantificação da severidade), para o cálculo da área abaixo da curva de progresso da doença (AACPD). Dentre os métodos avaliados, observou-se que o método de inoculação em folhas D destacadas foi o mais eficiente, rápido e de baixo custo, além de reproduzir satisfatoriamente os sintomas da doença. O período indicado para avaliar acessos resistentes a fusariose é entre 10 e 20 dias após inoculação do patógeno, em folhas D destacadas. No acesso 1 foi observada menor área de lesão e AACPD, em todas as avaliações realizadas. Este acesso pode ser recomendado para compor programas de melhoramento do abacaxizeiro visando resistência à fusariose. Palavras-chave:Ananas comosus var. comosus. Resistência genética. Fusariose.

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“…O Fusarium moniliforme é um parasita obrigatório que infecta da goma até a planta adulta. Os sintomas da fusariose são variáveis e dependem das condições ambientais, do nível de resistência da variedade e do estágio de desenvolvimento da cultura (Verzignassi, 2009 Desde o começo do século XXI já era verificada a presença de bactérias e esporos de fungos, incluindo os gêneros Alternaria, Cladosporium, Fusariella e Curvularia em fumaça proveniente da queima de biomassa (Ribeiro, 2008;Mims e Mims III, 2004).…”

Section:  No Brasilunclassified

Incidência e fatores de risco de contaminação por fungos filamentosos na mucosa oral normal de trabalhadores rurais das culturas de cana-de-açúcar, laranja e abacaxi da região de Frutal-MG

Rodrigues¹

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Fusariose do abacaxizeiro no Pará

Cited by 5 publications

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Effect of temperature and photoperiod on the development of fusariosis in pineapples

Effect of temperature and photoperiod on the development of fusariosis in pineapples

METHODS FOR INOCULATION WITH Fusarium guttiforme AND GENETIC RESISTANCE OF PINEAPPLE (Ananas comosus var. comosus)

Incidência e fatores de risco de contaminação por fungos filamentosos na mucosa oral normal de trabalhadores rurais das culturas de cana-de-açúcar, laranja e abacaxi da região de Frutal-MG

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