Inhibition of mycelial growth, conidial germination, and Botrytis cinerea Pers.:Fr colonization in begonia with biocompatible products.

• Autor(a) principal: PIERMANN, L.
• Data de Publicação: 2022
• Outros Autores: FUJINAWA, M. F., PONTES, J. de C., GALVAO, J. A. H., BETTIOL, W.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
• Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1143917; https://doi.org/10.1590/1678-992X-2021-0062
• topic: Botrytis Cinerea; Mofo Cinzento; Controle Biológico; Bacilo; Bicarbonato; Bicarbonato de Sódio; Café; Óleo Vegetal; Begônia; Gray mold; Bacillus subtilis; Biological control; Potassium carbonate; Sodium bicarbonate; Sodium carbonate; Coffee products; Plant fats and oils

Abstract: This study evaluated the effects of potassium and sodium carbonate and bicarbonate, Bacillus subtilis (Cohn, 1872) QST-713, Bacillus pumilus (Meyer & Gottheil, 1901) QST-2808, and crude and roasted coffee oils on the inhibition of mycelial growth and conidial germination in Botrytis cinerea Pers.: Fr and the colonization of begonia (Begonia elatior Hort. ex Steud) leaf discs by B. cinerea inoculated before, simultaneously and after with these alternative products. The assays were carried out using the Baladin begonia cultivar. The inhibition of B. cinerea mycelial growth and conidial germination was proportional to increases in the concentration of all the products. The inhibition of conidial germination was directly proportional to the concentrations of B. pumilus QST-2808 and B. subtilis QST-713. Coffee oils were less efficient in inhibiting germination than the other products. The crude and roasted coffee oils, potassium and sodium carbonates and bicarbonates, and B. pumilus and B. subtilis sprayed 24 h before, simultaneously, or 24 h after pathogen inoculation inhibited the colonization of begonia leaf discs by B. cinerea. The positive results for the suppression of B. cinerea by the alternative products tested herein merit scrutiny. There is a pressing need to evaluate these products in the management of gray mold, as the severity of this disease is usually high under favorable conditions in greenhouses.