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PATOGENICIDADE DE Lecanicillium fungicola EM Agaricus bisporus

Authors: Caitano, Cinthia Elen Cardoso;

PATOGENICIDADE DE Lecanicillium fungicola EM Agaricus bisporus

Abstract

O fungo Lecanicillium fungicola é um importante patógeno no cultivo de Agaricus bisporus, apresentando diversos sintomas e perdas de produção. O objetivo do trabalho foi avaliar interações in vivo e in vitro dos fungos Lecanicillium fungicola e Agaricus bisporus. Os experimentos in vitro foram feitos utilizando discos de micélio do patógeno e composto colonizado pelo A. bisporus. O composto colonizado também foi utilizado para a frutificação de cogumelos tanto em tamanho menor em placas de petri como em maior quantidade. Foram aplicados quatro suspensões de esporos L. fungicola nos cogumelos em placas de petri, de acordo com o seu tratamento. Não ocorreu a paralisação do crescimento micelial in vitro no momento em que o patógeno e o hospedeiro se encontram. Após 36 horas a inoculação do patógeno foi possível a visualização de manchas no píleo e após 60 horas a visualização de hifas e esporos. A linhagem coloração creme apresentou maior massa e diâmetro do píleo e menor porcentagem de rompimento do véu. A linhagem de A. bisporus de coloração branca obteve maior produtividade do que a linhagem de coloração creme. O isolado LF 19/03 apresentou maior agressividade em ambas as linhagens de A. bisporus. Os diversos sintomas encontrados no decorrer da pesquisa possibilitaram a confecção de uma escala diagramática para auxiliar o produtor na comercialização dos cogumelos doentes.

The fungus Lecanicillium fungicola is an important pathogen in the cultivation of Agaricus bisporus, presenting several symptoms and production losses. The objective of the work was to evaluate interactions in vivo and in vitro of the fungi Lecanicillium fungicola and Agaricus bisporus. The in vitro experiments were done using mycelium discs of the pathogen and compound colonized by A. bisporus. The colonized compost was also used for the fruiting of mushrooms both in smaller size in petri dishes and in greater quantity. Four suspensions of L. fungicola spores were applied to the boxes according to their treatment. Mycelial growth did not stop in vitro at the time the pathogen and host meet. After 36 hours the inoculation of the pathogen made it possible to see spots on the cap and after 60 hours, to view hyphae and spores. The cream-colored lineage showed greater mass and diameter of the cap and lesser percentage of rupture of the veil. The white colored A. bisporus strain obtained higher productivity than the cream colored strain. The isolate LF 19/03 showed greater aggressiveness in both strains of A. bisporus. The various symptoms found in the course of the research enabled the production of a diagrammatic scale to assist the producer in the sale of sick mushrooms.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Pós-graduação em Microbiologia Agropecuária - FCAV

Country
Brazil
Keywords

Fungus, Cogumelos comestíveis, Micologia, Edible mushrooms, Mycology, Fungos

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green