Bacterial volatile organic compounds as biopesticides, growth promoters and plant-defense elicitors: Current understanding and future scope

Rani, Annu; Rana, Anuj; Dhaka, Rahul Kumar; Singh, Arvind Pratap; Chahar, Madhvi; Singh, Surender; Nain, Lata; Singh, K. P.; Minz, Dror

doi:10.1016/j.biotechadv.2022.108078

Cited by 41 publications

(26 citation statements)

References 114 publications

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“…Under aerobic conditions, bacteria utilize any carbon source for cell growth, with only a small fraction being used for VOC production. Under microaerophilic and anaerobic conditions, bacteria initiate fermentation by utilizing carbon sources, and these are involved in the biosynthesis and emission of various VOCs [ 58 , 59 ].…”

Section: Resultsmentioning

confidence: 99%

“…Despite all the challenges in field conditions, VOCs can still be effectively utilized, as the necessary concentration of VOCs can be maintained in enclosed environments [ 59 ]. However, to fully assess their effects, multiple analyses and investigations are required to examine the efficacy of VOCs produced under natural conditions during plant–microorganism interactions.…”

Section: Resultsmentioning

confidence: 99%

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Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Rabiço,

Borelli,

Alnoch

et al. 2024

BioTech

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In response to the escalating demand for sustainable agricultural methodologies, the utilization of microbial volatile organic compounds (VOCs) as antagonists against phytopathogens has emerged as a viable eco-friendly alternative. Microbial volatiles exhibit rapid diffusion rates, facilitating prompt chemical interactions. Moreover, microorganisms possess the capacity to emit volatiles constitutively, as well as in response to biological interactions and environmental stimuli. In addition to volatile compounds, these bacteria demonstrate the ability to produce soluble metabolites with antifungal properties, such as APE Vf, pyoverdin, and fragin. In this study, we identified two Pseudomonas strains (BJa3 and MCal1) capable of inhibiting the in vitro mycelial growth of the phytopathogenic fungus Aspergillus flavus, which serves as the causal agent of diseases in sugarcane and maize. Utilizing GC/MS analysis, we detected 47 distinct VOCs which were produced by these bacterial strains. Notably, certain volatile compounds, including 1-heptoxydecane and tridecan-2-one, emerged as primary candidates for inhibiting fungal growth. These compounds belong to essential chemical classes previously documented for their antifungal activity, while others represent novel molecules. Furthermore, examination via confocal microscopy unveiled significant morphological alterations, particularly in the cell wall, of mycelia exposed to VOCs emitted by both Pseudomonas species. These findings underscore the potential of the identified BJa3 and MCal1 Pseudomonas strains as promising agents for fungal biocontrol in agricultural crops.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Rabiço,

Borelli,

Alnoch

et al. 2024

BioTech

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show abstract

“…For example, dimethyl disulfide (DMDS) is a microbial VOC produced by bacteria such as Bacillus species. DMDS contributes to the characteristic smell of soil and is involved in signaling and defense mechanisms in several plants such as potato, rice, tomato, and maize [ 131 , 132 , 133 , 134 ]. The study of Ayaz et al [ 135 ] reported that nematicidal volatiles from Bacillus atrophaeus strain GBSC56 promote growth and stimulate induced systemic resistance in tomato against Meloidogyne incognita by increasing levels of SOD, CAT, POD, APX, PR1, PR5, and SlLOX1 to efficiently manage root-knot disease.…”

Section: Induced Plant Defensementioning

confidence: 99%

Rhizosphere Microorganisms Supply Availability of Soil Nutrients and Induce Plant Defense

Thepbandit,

Athinuwat

2024

Microorganisms

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Plant health is necessary for food security, which is a key determinant of secure and sustainable food production systems. Deficiency of soil nutrients and invasion of plant pathogens or insects are the main destroyers of the world’s food production. Synthetic fertilizers and chemical-based pesticides are frequently employed to combat the problems. However, these have negative impacts on microbial ecosystems and ecosystem functioning. Rhizosphere microorganisms have demonstrated their potency to improve or manage plant nutrients to encourage plant growth, resulting in increased yield and quality by converting organic and inorganic substances around the rhizosphere zone into available plant nutrients. Besides regulating nutrient availability and plant growth enhancement, rhizobacteria or fungi can restrict plant pathogens that cause disease by secreting inhibitory chemicals and boosting plant immunity to combat pests or pathogens. Thus, rhizosphere microorganisms are viewed as viable, alluring economic approaches for sustainable agriculture as biofertilizers and biopesticides. This review provides an overview of the role of rhizosphere microorganisms in soil nutrients and inducing of plant defenses. Moreover, a discussion is presented surrounding the recent consequences of employing these microorganisms and a sustainable strategy towards improving fertilization effectiveness, and encouraging stronger, more pest-resistant plants.

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“…Finally, peroxidases, oxygenases, and other enzymes convert DDT-intermediate metabolites into non-toxic compounds [62] . Lastly, benzaldehyde is produced when lignin-degrading enzymes split the molecule's ring structure [63] , [64] , [65] , [66] .…”

Section: Microbial Ddt Remediationmentioning

confidence: 99%

The role and mechanisms of microbes in dichlorodiphenyltrichloroethane (DDT) and its residues bioremediation

Ebsa,

Gizaw,

Admassie

et al. 2024

Biotechnology Reports

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Bacterial volatile organic compounds as biopesticides, growth promoters and plant-defense elicitors: Current understanding and future scope

Cited by 41 publications

References 114 publications

Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Rhizosphere Microorganisms Supply Availability of Soil Nutrients and Induce Plant Defense

The role and mechanisms of microbes in dichlorodiphenyltrichloroethane (DDT) and its residues bioremediation

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