Agroecological Management of the Grey Mould Fungus Botrytis cinerea by Plant Growth-Promoting Bacteria

Abstract

Botrytis cinerea is the causal agent of grey mould and one of the most important plant pathogens in the world because of the damage it causes to fruits and vegetables. Although the application of botrycides is one of the most common plant protection strategies used in the world, the application of plant-beneficial bacteria might replace botrycides facilitating agroecological production practices. Based on this, we reviewed the different stages of B. cinerea infection in plants and the biocontrol mechanisms exerted by plant-beneficial bacteria, including the well-known plant growth-promoting bacteria (PGPB). Some PGPB mechanisms to control grey mould disease include antibiosis, space occupation, nutrient uptake, ethylene modulation, and the induction of plant defence mechanisms. In addition, recent studies on the action of anti-Botrytis compounds produced by PGPB and how they damage the conidial and mycelial structures of the pathogen are reviewed. Likewise, the advantages of individual inoculations of PGPB versus those that require the joint action of antagonist agents (microbial consortia) are discussed. Finally, it should be emphasised that PGPB are an excellent option to prevent grey mould in different crops and their use should be expanded for environmentally friendly agricultural practices.

Mg–Al LDH nanosheets as a nanotechnological tool in agriculture: an exploratory toxicity evaluation study

“…To continue exploring the effects of Mg–Al LDH nanoparticles on the growth of different organisms involved in the agricultural industry, an experiment was performed to evaluate the effects of Mg–Al LDH on the growth kinetics of two fungi species. The selected organisms were Botrytis cinerea , one of the most important plant pathogens in the agricultural industry, 71 and Thricoderma atroviride , a beneficial plant fungus typically used as a biocontrol agent for Botrytis cinerea. 72 Thus, the toxic effect that Mg–Al LDH could have on these organisms was evaluated by growth monitoring and through the logistic parameters obtained by comparing the growth dynamic of each fungus in the in vitro conditions and at increasing concentrations of the nanoparticles (Fig.…”

Genetic and molecular landscapes of the generalist phytopathogen Botrytis cinerea

“…As a result, growers adopt integrated management strategies to minimize crop losses. These strategies combine multiple approaches such as cultural practices, chemical and biological controls, and use of tolerant/resistant varieties (Chen et al., 2023 ; Hua et al., 2018 ; Orozco‐Mosqueda et al., 2023 ). Because the quantitative nature of host resistance confounds breeding efforts, chemical fungicides are the primary means of control.…”

Microbial Diversity on Grape Surface and Its Research Status

“…Grapevine offers different habitats for microorganisms, such as: roots, leaves, fruits, each of which is unique [80]. As it mentioned previously, researchers are funding the plant growth-promoting bacteria (PGPB) as new agroecological management [81]. It has been proven that PGPB are an excellent option to prevent grey mould, and specific composition and functions of the rhizosphere microbial community contribute to the enhanced tolerance of some grapevines to salt stress [82].…”