Selection of Antarctic yeasts as gray mold biocontrol agents in strawberry.

Autor: Ferreira EMS; Laboratory of General and Applied Microbiology, Federal University of Tocantins, Palmas, TO, Brazil., Garmendia G; Cátedra de Microbiología, Departamento de Biociencias, Facultad de Química, UdelaR, Montevideo, Uruguay., Gonçalves VN; Laboratory of General and Applied Microbiology, Federal University of Tocantins, Palmas, TO, Brazil.; Departament of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil., da Silva JFM; Laboratory of General and Applied Microbiology, Federal University of Tocantins, Palmas, TO, Brazil., Rosa LH; Departament of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil., Vero S; Cátedra de Microbiología, Departamento de Biociencias, Facultad de Química, UdelaR, Montevideo, Uruguay., Pimenta RS; Laboratory of General and Applied Microbiology, Federal University of Tocantins, Palmas, TO, Brazil. pimentars@uft.edu.br.
Jazyk: angličtina
Zdroj: Extremophiles : life under extreme conditions [Extremophiles] 2023 Jul 06; Vol. 27 (2), pp. 16. Date of Electronic Publication: 2023 Jul 06.
DOI: 10.1007/s00792-023-01298-z
Abstrakt: The postharvest disease popularly known as gray mold is considered one of the most limiting factors strawberry fruit production. The most effective way to control this disease is still the use of chemical fungicides. However, other alternative sources of control are being explored. Among these, psychrophilic yeasts adapted to extreme conditions, such as those found in the Antarctic region, may have great potential for use as biocontrol agents. Thus, the present study aimed to select psychrotolerant yeasts obtained from Antarctic region and to evaluate their potential for biocontrol under gray mold, caused by Botrytis cinerea in strawberries stored at low temperature. For this, 20 potential antagonist yeasts were evaluated in vitro (thermotolerance and enzymatic) assays. Debaryomyces hansenii, Rhodotorula mucilaginosa and Dioszegia hungarica were selected for growing in strawberry juice. However, only D. hansenii was selected for in vivo studies and showed a reduction in the incidence of gray mold by 82% for the tests performed on injury and 86% for the tests on non-injured fruits treated by immersion bath. Thus, demonstrating that the selection of this cold-adapted Antarctic yeast can be a promising strategy as a biocontrol agent used to curb the development of gray mold in strawberry fruits.
(© 2023. The Author(s), under exclusive licence to Springer Nature Japan KK, part of Springer Nature.)
Databáze: MEDLINE
Externí odkaz: