Bacteria in the genus Streptomyces are effective biological control agents for management of fungal plant pathogens: a meta-analysis

LeBlanc, Nicholas

doi:10.1007/s10526-021-10123-5

Cited by 18 publications

(12 citation statements)

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“…Different direct and indirect biocontrol mechanisms have been reported to be utilized by Streptomyces spp. [ 13 ]. The direct mechanisms against soil microorganisms and pathogens include competition for space or nutrients, especially due to their exploratory growth behavior, antibiosis (antibiotics, enzymes, and volatile compounds), and/or hyperparasitism.…”

Section: Discussionmentioning

confidence: 99%

“…The biological control of fungal plant diseases using Streptomyces spp. Has been extensively studied in recent decades [ 12 , 13 , 14 , 15 ]. In this context, Rashad et al [ 16 ] reported a considerable reduction in the disease severity of tomato plants infected with Fusarium wilt disease when treated with the bioagent S. griseorubens E44G.…”

Section: Introductionmentioning

confidence: 99%

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Synergism between Streptomyces viridosporus HH1 and Rhizophagus irregularis Effectively Induces Defense Responses to Fusarium Wilt of Pea and Improves Plant Growth and Yield

El-Sharkawy

Rashad

Elazab

2022

JoF

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Fusarium wilt is a detrimental disease of pea crop, resulting in severe damage and a reduction in its yield. Developing synergistically enhanced bioagents for disease management and growth promotion is pivotal for food safety, security, and sustainability. In this study, biocontrol potential of treating pea plants with Streptomyces viridosporus HH1 and/or their colonization with Rhizophagus irregularis against infection with Fusarium wilt was investigated. Impacts on the expression profiles of defense-related genes, biochemical, and ultrastructural levels, as well as the growth and yield of pea plants in response to these treatments, were also investigated. Data obtained indicated the antifungal activity of S. viridosporus HH1 against F. oxysporum f.sp. pisi in vitro. Furthermore, the GC-MS analysis revealed production of different bioactive compounds by S. viridosporus HH1, including 2,3-butanediol, thioglycolic acid, and phthalic acid. The results from the greenhouse experiment exhibited a synergistic biocontrol activity, resulting in a 77% reduction in disease severity in pea plants treated with S. viridosporus HH1 and colonized with R. irregularis. In this regard, this dual treatment overexpressed the responsive factor JERF3 (5.6-fold) and the defense-related genes β-1,3-glucanase (8.2-fold) and the pathogenesis-related protein 1 (14.5-fold), enhanced the total phenolic content (99.5%), induced the antioxidant activity of peroxidase (64.3%) and polyphenol oxidase (31.6%) enzymes in pea plants, reduced the antioxidant stress, and improved their hypersensitivity at the ultrastructural level in response to the Fusarium wilt pathogen. Moreover, a synergistic growth-promoting effect was also recorded in pea plants in response to this dual treatment. In this regard, due to this dual treatment, elevated levels of photosynthetic pigments and improved growth parameters were observed in pea leaves, leading to an increment in the yield (113%). In addition, application of S. viridosporus enhanced the colonization levels with R. irregularis in pea roots. Based on the obtained data, we can conclude that treating pea plants with S. viridosporus HH1 and colonization with R. irregularis have synergistic biocontrol activity and growth-promoting effects on pea plants against Fusarium wilt. Despite its eco-safety and effectiveness, a field evaluation of this treatment before a use recommendation is quite necessary.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synergism between Streptomyces viridosporus HH1 and Rhizophagus irregularis Effectively Induces Defense Responses to Fusarium Wilt of Pea and Improves Plant Growth and Yield

El-Sharkawy

Rashad

Elazab

2022

JoF

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“…have been studied for over 40 years, and many of them are currently known and characterised for their ability to reduce the incidence of root system and collar diseases [35][36][37]. The most studied species belong to Bacillus, Pseudomonas, Streptomyces and Burkholderia spp., for which efficacy and mode of action in the soil ecosystem have been clearly defined [38][39][40][41]. Recently, new interactions have been described in the rhizosphere between roots and bacteria capable of mitigating the negative action of soil-borne fungal pathogens.…”

Section: Bcas Against Soil-borne Pathogensmentioning

confidence: 99%

Advances and Perspectives in the Use of Biocontrol Agents against Fungal Plant Diseases

et al. 2022

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The use of synthetic fungicides to control fungal diseases has growing limitations due to eco-toxicological risks. Therefore, it is necessary to replace or integrate high risk chemicals with safer tools for human health and environment. Consequently, research on the selection, evaluation, characterization, and use of biocontrol agents (BCAs) has consistently increased in the last decades. BCA formulates, particularly in some countries, are still scarce in coping with the growing demand for their use in sustainable agricultural management. To foster development and utilization of new effective bioformulates, there is a need to optimize BCA activity, to share knowledge on their formulation processes and to simplify the registration procedures. Studies based on new molecular tools can significantly contribute to achieve such objectives. The present review provides the state of the art on biocontrol of fungal plant diseases with special emphasis on (i) features of the most studied BCAs; (ii) key strategies to optimize selection and use of BCAs (iii); mechanisms of action of the main BCAs; (iv) molecular tools and metagenomic studies in the selection and use of BCAs; (v) main issues and constraints in the registration and commercialization of BCAs, and (vi) perspectives in the biocontrol of fungal plant diseases.

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“…Focusing solely on in vitro inhibition overlooks a range of ecological factors that can influence the establishment and persistence of biological control agents in their natural habitats, as highlighted by Kaminsky et al (2019) . When researching microbial methods for controlling plant diseases, the emphasis often falls on specific pathogen-host pairings, raising questions about how effective and applicable these biological control agents are across various plant pathogens and crop varieties, as discussed by LeBlanc (2022) . The primary mechanism associated with the effectiveness of biocontrol is the production of multiple antibiotics.…”

Section: Introductionmentioning

confidence: 99%

“…For example, an organic compound produced by Streptomyces yanglinensis strain 3–10 can inhibit A. flavus from growing and producing toxins in stored soybeans ( Gong et al, 2022 ). In naturally existing disease-suppressive soils, these bacteria hinder the growth of plant pathogens by generating secondary metabolites and engaging in resource competition, such as for carbon and iron ( LeBlanc, 2022 ). Streptomyces species recently discovered are being seriously considered in the agricultural biocontrol field.…”

Section: Introductionmentioning

confidence: 99%

Streptomyces as a promising biological control agents for plant pathogens

Khan,

Srivastava,

Karnwal

et al. 2023

Front. Microbiol.

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Plant diseases caused by pathogenic microorganisms in agriculture present a considerable obstacle, resulting in approximately 30–40% crop damage. The use of conventional techniques to manage these microorganisms, i.e., applying chemical pesticides and antimicrobials, has been discovered to have adverse effects on human health and the environment. Furthermore, these methods have contributed to the emergence of resistance among phytopathogens. Consequently, it has become imperative to investigate natural alternatives to address this issue. The Streptomyces genus of gram-positive bacteria is a potentially viable natural alternative that has been extensively researched due to its capacity to generate diverse antimicrobial compounds, such as metabolites and organic compounds. Scientists globally use diverse approaches and methodologies to extract new bioactive compounds from these bacteria. The efficacy of bioactive compounds in mitigating various phytopathogens that pose a significant threat to crops and plants has been demonstrated. Hence, the Streptomyces genus exhibits potential as a biological control agent for combating plant pathogens. This review article aims to provide further insight into the Streptomyces genus as a source of antimicrobial compounds that can potentially be a biological control against plant pathogens. The investigation of various bioactive compounds synthesized by this genus can enhance our comprehension of their prospective utilization in agriculture.

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Bacteria in the genus Streptomyces are effective biological control agents for management of fungal plant pathogens: a meta-analysis

Cited by 18 publications

References 59 publications

Synergism between Streptomyces viridosporus HH1 and Rhizophagus irregularis Effectively Induces Defense Responses to Fusarium Wilt of Pea and Improves Plant Growth and Yield

Synergism between Streptomyces viridosporus HH1 and Rhizophagus irregularis Effectively Induces Defense Responses to Fusarium Wilt of Pea and Improves Plant Growth and Yield

Advances and Perspectives in the Use of Biocontrol Agents against Fungal Plant Diseases

Streptomyces as a promising biological control agents for plant pathogens

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