Tolerance to Lecanicillium fungicola and yield of Agaricus bisporus strains used in Brazil

Zied, Diego Cunha; Nunes, José Aírton Rodrigues; Nicolini, Vinicius Franco; Pardo-Giménez, Arturo; Rinker, Danny Lee; Dias, Eustáquio Souza

doi:10.1016/j.scienta.2015.04.021

Cited by 8 publications

(7 citation statements)

References 26 publications

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“…This finding concurs with the results of ZIED et al (2015), who reported conidial germination after 15 hours of inoculation. Most likely, occurrence of the disease is higher when the oils are applied pre-infestation, which occurs because of the volatility of the oils Table 3 -Dry bubble disease incidence means (%) according to strains and period of essential oils application.…”

Section: Resultssupporting

confidence: 93%

“…Santos et al Brazilian Ministry of Agriculture has no registered disease control products for the commercial cultivation of A. bisporus (MAPA -IN 18, 2009); however, the producers apply fungicides daily, following the recommendations made in other countries, particularly the United States. Some modern facilities permitting prophylactic measures are considered onerous; therefore, their implementation is limited only to those mushroom producers possessing high investment capacities (ZIED et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Essential oils in the control of dry bubble disease in white button mushroom

et al. 2017

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Lecanicillium fungicola, which causes Dry bubble disease, induces infections and inflicts major losses in champignon production. The control can be managed through measures of hygiene and use of fungicides; however, in Brazil there are no registered products. This study aimed to estimate the influence of various essential oils extracted from Melissa officinalis, Thymus vulgaris, Origanum vulgare, Eucalyptus globulus, Cinnamomum zeylanicum and Syzygium aromaticum on the in vitro development and their uses. Therefore, analysis was performed of the L. fungicola isolates in vitro and the best oils were tested in vivo. Besides, the Agaricus bisporus - L. fungicola interaction was confirmed by scanning electron microscopy (SEM). Cinnamon and clove oils in concentrations of 0.4% and thyme oil of 0.8% were identified as good growth inhibitors of the pathogenic mycelium. Effective inhibition of the conidial germination was seen in all concentrations by cinnamon oil, and by clove and thyme oils only at 0.4% and 0.8%, respectively. When the essential oils were applied post-infestation in the in vivo experiments the incidence of the disease in the mushrooms was much lower. From the SEM it was clear that 19 hours after the inoculation of A. bisporus with L. fungicola, the spores had already completely germinated, revealing the presence of the infection. Therefore, the findings of this study indicated that the oil extracts of cinnamon, clove and thyme are potential and efficient alternatives in the control of dry bubble disease.

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Section: Resultssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Essential oils in the control of dry bubble disease in white button mushroom

et al. 2017

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“…The following strains of A. bisporus were used in the present work: ABI 04/02, ABI 11/16, ABI 11/19, ABI 11/20, ABI 15/01, and ABI 15/02. The strains ABI 04/02, ABI 11/16, ABI 11/19, ABI 11/20 were previously characterized by Zied et al (2015). The strains ABI 15/01 and ABI 15/02 were isolated by commercial growers of Mogi das Cruzes, State of São Paulo (April 2015), who had imported them from the USA.…”

Section: Strainsmentioning

confidence: 99%

“…Mushroom weight after stipe trimming (cut to remove the casing, approximately 1.5 cm) and the total number of mushrooms picked from each box were recorded daily. The yield was calculated as fresh weight (fw) of mushroom divided by fw of compost multiplied by 100 and expressed as % (Zied et al 2015).…”

Section: Second Stagementioning

confidence: 99%

First study of hormesis effect on mushroom cultivation

Zied

Dourado

Dias

et al. 2017

World J Microbiol Biotechnol

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The use of fungicides is common in mushroom cultivation, but no study was carried out applying reduced doses of fungicides in order to increase yield, taking account the hormesis effect. The aim of this manuscript was to verify the effects of different concentrations of fungicides to stimulate the productivity of different strains of Agaricus bisporus. Two stages were developed, an in vitro study to define the best concentration to be applied in the second experiment an agronomic study, which consisted of the application of the selected fungicides, in their respective concentrations, in an experiment carried out in the mushroom chamber. Clearly, the result of the hormesis effect on mushroom cultivation can be verified. The results obtained in the 1st stage of the study (in vitro) were not always reproduced in the 2nd stage of the study (in vivo). The kresoxim methyl active ingredient may be an important chemical agent, while strain ABI 15/01 may be an extremely important biological agent to increase yield in the study of hormesis effects.

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“…The strains used were maintained in subcultures (Potato Dextrose Agar -PDA; Difco, Lawrence, USA), and were isolated directly from the basidioma, according to Zied et al 25 The L. fungicola strain was isolated from diseased mushrooms collected by growers in the city of Mogi das Cruzes, Sao Paulo State (Brazil). The strains of A. bisporus are described in the manuscript presented by Zied et al 26 Discs (0.5 cm in diam.) containing inoculum of the fungi (A. bisporus strains and L. fungicola) were transferred to a Petri dish (8 cm in diameter) with PDA on opposite sides and maintained at 25 ± 0.5 • C in a controlled chamber.…”

Section: Hyphal Interactionmentioning

confidence: 99%