Phenazine-Producing Pseudomonas spp. as Biocontrol Agents of Plant Pathogens

Arseneault, Tanya; Filion, Martin

doi:10.1007/978-81-322-2644-4_4

Cited by 7 publications

(6 citation statements)

References 100 publications

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“…Pseudomonas is a bacteria genus widely studied as a root colonizer and has been the subject of several reviews on its plant growth-promoting capacity and biocontrol potential, with high interest in an agricultural setting [100]. In the 1990s, several species within the genus were described to have the ability to induce systemic plant resistance by colonizing the roots, and there are currently many studies on different plant species and against different biotic stresses [101].…”

Section: Bacteria As Inductors Of Plant Resistance Against B Cinereamentioning

confidence: 99%

Insight into the Microbiological Control Strategies against Botrytis cinerea Using Systemic Plant Resistance Activation

2020

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Botrytis cinerea is a polyphagous necrotrophic fungus and is the causal agent of grey mold diseases in more than 1400 different hosts. This fungus causes serious economic losses in both preharvest and post-harvest—mainly in grape, strawberry, and tomato crops—and is the second most important pathogen worldwide, to our knowledge. Beneficial bacteria and fungi are efficient biocontrol agents against B. cinerea through direct mechanisms, such as parasitism, antibiosis, and competition, but also indirectly through the activation of systemic plant resistance. The interaction between plants and these microorganisms can lead to the development of defensive responses in distant plant organs, which are highly effective against foliar, flower, and fruit pathogens, such as B. cinerea. This review aimed to explore the systemic plant defense responses against B. cinerea by compiling all cases reported (to the best of our knowledge) on the use of beneficial bacteria and fungi for agriculture, a subject not yet specifically addressed.

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Section: Bacteria As Inductors Of Plant Resistance Against B Cinereamentioning

confidence: 99%

Insight into the Microbiological Control Strategies against Botrytis cinerea Using Systemic Plant Resistance Activation

2020

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“…To date, large numbers of Pseudomonas spp., which possess the biocontrol ability to plant diseases, have been reported. − In this genus, part of the biocontrol ability is derived from the biosynthesized metabolites phenazines. ,− So far, the mass of natural phenazines with diverse chemical structures and physicochemical properties has been discovered and characterized. Many of the natural phenazines have shown an effective role in antibiotic activity and act as survival factors in many infectious diseases. − It also has been developed as a biopesticide for fungal phytopathogens biological control. , For example, “Shenqinmycin” (phenazine-1-carboxylic acid (PCA),) which can prevent rice sheath blight and pepper blight, is mainly produced by Pseudomonas aeruginosa M18 and P.…”

Section: Introductionmentioning

confidence: 99%

Microbial Synthesis of Antibacterial Phenazine-1,6-dicarboxylic Acid and the Role of PhzG in Pseudomonas chlororaphis GP72AN

Guo

Bilal

et al. 2020

J. Agric. Food Chem.

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Pseudomonas chlororaphis have been demonstrated to be environmentally friendly biocontrol strains, and most of them can produce phenazine compounds. Phenazine-1,6-dicarboxylic acid (PDC), with a potential antibacterial activity, is generally found in Streptomyces but not in Pseudomonas. The present study aimed to explore the feasibility of PDC synthesis and the function of PhzG in Pseudomonas. A PDC producer was constructed by replacing phzG in P. chlororaphis with lphzG from Streptomyces lomondensis. Through gene deletion, common start codon changing, gene silence, and in vitro assay, our result revealed that the yield of PDC in P. chlororaphis is associated with the relative expression of phzG to phzA and phzB. In addition, it is found that PDC can be spontaneously synthesized without PhzG. This study provides an efficient way for PDC production and promotes a better understanding of PhzG function in PDC biosynthesis. Moreover, this study gives an alternative opportunity for developing new antibacterial biopesticides.

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“…The production of phenazines demonstrates the potential for use as a BCA against numerous diseases affecting various crops. Phenazine-1-carboxylic acid (PCA), phenazine-1-carboxamide (PCN), pyocyanin (PYO), and hydroxy phenazines (OH-PHZ) are directly involved in reducing several diseases caused by bacteria, fungi, and oomycetes [ 157 , 158 ]. In vitro, P. putida BK8661 inhibited S. tritici and P. recondita f. sp.…”

Section: Current Control Strategies For Cereal Leaf Pathogensmentioning

confidence: 99%

Beneficial Microorganisms as Bioprotectants against Foliar Diseases of Cereals: A Review

Dehbi,

Achemrk,

Ezzouggari

et al. 2023

Plants

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Cereal production plays a major role in both animal and human diets throughout the world. However, cereal crops are vulnerable to attacks by fungal pathogens on the foliage, disrupting their biological cycle and photosynthesis, which can reduce yields by 15–20% or even 60%. Consumers are concerned about the excessive use of synthetic pesticides given their harmful effects on human health and the environment. As a result, the search for alternative solutions to protect crops has attracted the interest of scientists around the world. Among these solutions, biological control using beneficial microorganisms has taken on considerable importance, and several biological control agents (BCAs) have been studied, including species belonging to the genera Bacillus, Pseudomonas, Streptomyces, Trichoderma, Cladosporium, and Epicoccum, most of which include plants of growth-promoting rhizobacteria (PGPRs). Bacillus has proved to be a broad-spectrum agent against these leaf cereal diseases. Interaction between plant and beneficial agents occurs as direct mycoparasitism or hyperparasitism by a mixed pathway via the secretion of lytic enzymes, growth enzymes, and antibiotics, or by an indirect interaction involving competition for nutrients or space and the induction of host resistance (systemic acquired resistance (SAR) or induced systemic resistance (ISR) pathway). We mainly demonstrate the role of BCAs in the defense against fungal diseases of cereal leaves. To enhance a solution-based crop protection approach, it is also important to understand the mechanism of action of BCAs/molecules/plants. Research in the field of preventing cereal diseases is still ongoing.

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Phenazine-Producing Pseudomonas spp. as Biocontrol Agents of Plant Pathogens

Cited by 7 publications

References 100 publications

Insight into the Microbiological Control Strategies against Botrytis cinerea Using Systemic Plant Resistance Activation

Insight into the Microbiological Control Strategies against Botrytis cinerea Using Systemic Plant Resistance Activation

Microbial Synthesis of Antibacterial Phenazine-1,6-dicarboxylic Acid and the Role of PhzG in Pseudomonas chlororaphis GP72AN

Beneficial Microorganisms as Bioprotectants against Foliar Diseases of Cereals: A Review

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