Modes of action for biological control of Botrytis cinerea by antagonistic bacteria

The role of beneficial bacteria in biocontrol of plant diseases, particularly those caused by the necro-trophic fungus Botrytis cinerea, has been investigated by testing many bacteria under laboratory and field conditions. Bacteria may protect plants against B. cinerea by direct antagonistic interac...

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Published inPhytopathologia mediterranea Vol. 55; no. 3; pp. 301 - 322
Main Authors HAIDAR, Rana, FERMAUD, Marc, CALVO-GARRIDO, Carlos, ROUDET, Jean, DESCHAMPS, Alain
Format Journal Article
LanguageEnglish
Published Florence Firenze University Press 01.12.2016
Subjects
antibiosis
Antifungals
Bacillus
Bacteria
biocontrol
Biological pest control
Botrytis
Botrytis cinerea
competition
Control
Environmental aspects
Fungal infections
grey mold
Life Sciences
Methods
Microbiology
Moas
Pathogens
Phytopathology
Plant diseases
REVIEW
bacterium
botrytis cinerea
contrôle biologique
champignon pathogène
vitis vinifera
competition
grey mold
composé organique volatil
fungal pathogen
metabolite
induced systemic resistance
bactérie
volatile organic compound
biocontrol
antibiosis
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Summary:The role of beneficial bacteria in biocontrol of plant diseases, particularly those caused by the necro-trophic fungus Botrytis cinerea, has been investigated by testing many bacteria under laboratory and field conditions. Bacteria may protect plants against B. cinerea by direct antagonistic interactions between biocontrol agents and this pathogen, as well as indirect effects through the induction of host resistance. This review focuses on various bacteria that act as biological control agents (BCAs) of B. cinerea and their associated mechanisms. The modes of action (MoAs) include: i) synthesis of anti-fungal metabolites, such as antibiotics, cell wall-degrading enzymes and volatile organic compounds (VOCs); ii) competition for nutrients and / or a niche; and iii) induction of host resistance. The challenge for development of BCAs is to reduce the variability of efficiency and to prove persistence under a large range of conditions. We discuss the advantages and drawbacks of MoA for future applications of bacteria in the field and in post-harvest storage, as well as combination of different MoAs as a strategy to achieve a more regular efficacy.
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ISSN:0031-9465
1593-2095
DOI:10.14601/Phytopathol_Mediterr-18079