Biological control agents (also called biocontrol agents or BCA) can play an important role in suppressing root pathogens in soilless systems. Biological control has the potential to solve problems with root diseases in soilless systems. Although mutualisms are common in all biological communities, they occur side by side with a wide array of antagonistic interactions. On the other hand, the maximum antagonistic effect of M. palmivorus has been found to act against Fusarium solani and F. thapsinum, and to a lesser degree against Penicillium sp., T. harzianum, and P. cyclopium after 6 to 8 days of incubation. However, not all the pathogens react in a similar fashion to a given antagonist. By continuing you agree to the use of cookies. (1995) found that out of the various sugar analogs tested as potential fungicides against apple and peach pathogens, only 2-deoxy-D-glucose was effective in controlling decay in inoculated fruits. Microbial Antagonists used to Control Postharvest Diseases in Horticultural Commodities Caused by Alternaria Alternata, M. Olstorpe, ... J. Schnürer, in Protective Cultures, Antimicrobial Metabolites and Bacteriophages for Food and Beverage Biopreservation, 2011. Biocontrol agents are those products that control plant pathogens or pests or reduce their amount or their effect by one or more organisms other than man (i.e. A significant reduction in storage decay was achieved by bringing several yeast species in direct contact with wounds in the peel of harvested fruits. Copyright © 2020 Elsevier B.V. or its licensors or contributors. A combination of the yeast antagonist, Pichia guilliermondii (107 cells ml−1 with CaCl2 (136 mM) in dip application, significantly decreased the incidence of green mold caused by Penicillium digitatum in grapefruit wounds (Droby et al., 1997).
The possibilities of using biocontrol agents in greenhouse systems have been reviewed by Paulitz and Bélanger (2001).
Our editors will review what you’ve submitted and determine whether to revise the article. Recently this compound was found to be compatible with the antagonistic yeast, Candida saitoana (El Gaouth et al., 2000b). This creates a substantial risk for mould growth when the plastic tube is opened, or if the plastic is damaged. Although antagonism is commonly thought of as an association between different species, it may also occur between members of the same species through competition and cannibalism. Some yeast species may metabolise lactic acid resulting in an increased pH endangering the hygienic quality (Middelhoven and van Balen 1988).
Whether these killer toxins also play a role in this grain storage system still needs further investigation. This is an interesting mechanism for soilless systems with high water retention capacity, that, as a consequence, have problems with many different zoospore producing pathogens. Some plants and animals may develop physical structures, such as hard coverings and spines, to discourage grazers and predators. However, sometimes yeasts are considered undesirable in feed, as they may confer off-flavours and taints that would affect palatability of the feed (Brooks et al.
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