Root Colonizing and Biocontrol Competency of Serratia plymuthica A21-4 against Phytophthora Blight of Pepper

Shen, Shun Shan; Choi, Okhee; Park, Sin Hyo; Kim, Chang Guk; Park, Chang Seuk

doi:10.5423/ppj.2005.21.1.064

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…Our findings for S. plymuthica are in agreement with the results of studies with another Serratia isolate in showing suppression of P. capsici symptoms (Shen et al 2005). Lysobacter strains inhibited a wide range of fungal pathogens: Pythium spp.…”

Section: Discussionsupporting

confidence: 93%

An effective biocontrol bioformulation against Phytophthora blight of pepper using growth mixtures of combined chitinolytic bacteria under different field conditions

et al. 2007

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Phytophthora blight of pepper caused by Phytophthora capsici has devastating consequences when combined with other pathogens, including Rhizoctonia solani, Fusarium oxysporum, and Fusarium solani. In order to develop a field-effective biocontrol strategy against Phytophthora blight of pepper, three chitinolytic bacteria, Serratia plymuthica strain C-1, strongly antagonistic to P. capsici, Chromobacterium sp. strain C-61, strongly antagonistic to R. solani, and Lysobacter enzymogenes strain C-3, antagonistic to R. solani and Fusarium spp., were selected. In pot studies, application of cultures combining the three bacterial strains effectively suppressed Phytophthora blight more than application of any single bacterial strain. Bioformulations developed from growth of the strains in a simple medium containing chitin under large batch conditions resulted in effective control in field applications. Efficacy of the bioformulated product depended on both the dose and timing of application. Although the undiluted product suppressed Phytophthora blight under all field conditions, a 10-fold diluted product was effective in solar-sterilized greenhouses and in fields with crop rotation. These results suggest that the developed product could be a new effective system to control Phytophthora blight disease in pepper.

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Section: Discussionsupporting

confidence: 93%

An effective biocontrol bioformulation against Phytophthora blight of pepper using growth mixtures of combined chitinolytic bacteria under different field conditions

et al. 2007

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“…The example of the role of antibiosis in the biological control of plant diseases is the use of Serratia plymuthica (A21-4) species to counteract P. capsici on pepper plants (Capsicum annuum L.) (Shen et al 2005). The authors conducted the research under in vitro conditions and observed that zoosporangium and zoospores growth was hindered by A21-4 strain synthesising macrocyclic lactone.…”

Section: Biological Control Of Blight Diseases Caused By the Oomycetementioning

confidence: 99%

“…Population of S. plymuthica steadily remained in rhizosphere as well as on grafted and newly grown pepper roots. A month after replanting the plants to the medium infected by P. capsici, the damages of control plants reached 75%, whereas the plants under biological control were damaged only at 12.6% (Shen et al 2005). The antibiosis was also investigated by Logeshwaran et al (2011), who showed that antagonistic strains of Gluconacetobacter diazotrophicus (L5 and PAL5) synthesising secondary metabolite with antibiotic properties (pyoluteorin) hindered the mycelium growth of F. oxysporum and F. solani.…”

Section: Biological Control Of Blight Diseases Caused By the Oomycetementioning

confidence: 99%

The possibilities of biologically protecting plants against diseases in nurseries, with special consideration of Oomycetes and Fusarium fungi

Okorski

Oszako

Nowakowska

et al. 2014

Forest Research Papers

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Achieving high quality propagative material is difficult today due to the limited number of pesticides recommended for use. Simultaneously, EU regulations on Integrated Pest Management (IPM) in forest nurseries came into a force, requiring a search for alternative plant protection methods that are safe for humans, animals and the environment. In this paper, we present the possibilities of using bio-fungicides against diseases in forest nurseries, their mechanisms of action, as well as the direction of their development (according to IPM rules). We reviewed the results achieved by different research teams presenting the possibilities and trends in combatting Oomycetes and Fusarium spp. pathogens currently having the most important economic impact.

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“…PGPR can colonize the rhizosphere of plants, enhance the activity of plant antioxidant enzymes, induce the expression of plant resistance genes, and thus protect plants from pathogenic bacteria (Fu et al, 2017;Qiu et al, 2022;Sui et al, 2023). For example, the Serratia plymuthica (S. plymuthica) A21-4 screened from onion rhizosphere soil has a strong antagonistic ability against P. capsici, and has a strong inhibitory effect on the hyphal growth, formation and germination of zoospores and sporangia of P. capsici (Shen et al, 2005). Pseudomonas fluorescens (Pf1 and Py15) and Bacillus subtilis (Bs16) induced the accumulation of defense enzymes and promoted the induction of systemic resistance, hence improving resistance to early blight disease of tomato (Latha et al, 2009).…”

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confidence: 99%

Serratia plymuthicaHK9‐3 enhances tomato resistance against Phytophthora capsici by modulating antioxidant defense systems and rhizosphere micro‐ecological condition

Wang,

Piao,

et al. 2024

Physiologia Plantarum

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Tomatoes are frequently challenged by various pathogens, among which Phytophthora capsici (P. capsici) is a destructive soil‐borne pathogen that seriously threatens the safe production of tomatoes. Plant growth‐promoting rhizobacteria (PGPR) positively induced plant resistance against multiple pathogens. However, little is known about the role and regulatory mechanism of PGPR in tomato resistance to P. capsici. Here, we identified a new strain Serratia plymuthica (S. plymuthica), HK9‐3, which has a significant antibacterial effect on P. capsici infection. Meanwhile, stable colonization in roots by HK9‐3, even under P. capsici infection, improved tomato growth parameters, root system architecture, photosynthetic capacity, and boosted biomass. Importantly, HK9‐3 colonization significantly alleviated the damage caused by P. capsici infection through enhancing ROS scavenger ability and inducing antioxidant defense system and pathogenesis‐related (PR) proteins in leaves, as evidenced by elevating the activities of peroxidase (POD), superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), phenylalanine ammonia lyase (PAL), polyphenol oxidase (PPO), and chitinase, β‐1,3‐glucanase, and increasing the transcripts of POD, SOD, CAT, APX1, PAL1, PAL2, PAL5, PPO2, CHI17 and β‐1,3‐glucanase genes. Notably, HK9‐3 colonization not only effectively improved soil microecology and soil fertility, but also significantly enhanced fruit yield by 44.6% and improved quality. Our study presents HK9‐3 as a promising and effective solution for controlling P. capsici infection in tomato cultivation while simultaneously promoting plant growth and increasing yield, which may have implications for P. capsici control in vegetable production.

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Root Colonizing and Biocontrol Competency of Serratia plymuthica A21-4 against Phytophthora Blight of Pepper

Cited by 9 publications

References 4 publications

An effective biocontrol bioformulation against Phytophthora blight of pepper using growth mixtures of combined chitinolytic bacteria under different field conditions

An effective biocontrol bioformulation against Phytophthora blight of pepper using growth mixtures of combined chitinolytic bacteria under different field conditions

The possibilities of biologically protecting plants against diseases in nurseries, with special consideration of Oomycetes and Fusarium fungi

Serratia plymuthicaHK9‐3 enhances tomato resistance against Phytophthora capsici by modulating antioxidant defense systems and rhizosphere micro‐ecological condition

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