Selection of halophilic bacteria for biological control of tomato gray mould caused by Botrytis cinerea

Imane BERRADA, Omar BENKHEMMAR, Jean SWINGS, Najib BENDAOU, Mohamed AMAR

Abstract


In Morocco, tomato gray mould caused by Botrytis cinerea Pers: Fr. is a serious threat for postharvest storage of tomatoes. Fifteen halophilic bacteria were evaluated for their antagonistic activity against B. cinerea: 11 Gram positive strains assigned to the genera Bacillus (9), Jeotgalibacillus (1) and Planococcus (1) and four Gram negative strains assigned to the genera Salinivibrio (1), Vibrio (2) and Photobacterium (1). In in vitro screening, 12 antifungal isolates secreted diffusible compounds, hydrolytic enzymes or volatile compounds. In vivo screening of the isolates, Bacillus safensis CCMM B582 and Bacillus oceanisediminis CCMM B584 showed permanent antagonistic activity on tomato fruits, with 100% inhibition of B. cinerea after 7 days. These two strains may offer potential for biological control of tomato gray mould.

Keywords


halophilic bacteria; antifungal compounds; Lycopersicon esculentum

Full Text:

PDF


DOI: http://dx.doi.org/10.14601/Phytopathol_Mediterr-10627



Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License (CC-BY- 4.0)

 
Firenze University Press
Via Cittadella, 7 - 50144 Firenze
Tel. (0039) 055 2757700 Fax (0039) 055 2757712
E-mail: info@fupress.com