Mixtures of Biological Control Agents and Organic Additives Improve Physiological Behavior in Cape Gooseberry Plants under Vascular Wilt Disease

Cháves-Gómez, Jose Luis; Chávez-Arias, Cristhian Camilo; Prado, Alba Marina Cotes; Gómez-Caro, Sandra; Restrepo-Díaz, Hermann

doi:10.3390/plants10102059

Cited by 6 publications

(4 citation statements)

References 96 publications

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“…Creation or construction of SynComs is generally expected to enhance the abilities or functions of single strains. Some studies have reported that the created SynComs or mixtures produced synergistic effects ( Sylla et al, 2015 ; Berendsen et al, 2018 ; Tsolakidou et al, 2019 ; Chaves-Gómez et al, 2021 ; Yang et al, 2021 ). In particular, Fujiwara et al (2016) showed that individual stains were not effective against Fusarium oxysporum alone but were in combination.…”

Section: Discussionmentioning

confidence: 99%

Synthetic microbial consortia derived from rhizosphere soil protect wheat against a soilborne fungal pathogen

2022

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Synthetic microbial communities (SynComs) could potentially enhance some functions of the plant microbiome and emerge as a promising inoculant for improving crop performance. Here, we characterized a collection of bacteria, previously isolated from the wheat rhizosphere, for their antifungal activity against soilborne fungal pathogens. Ten SynComs with different compositions from 14 bacterial strains were created. Seven SynComs protected wheat from Rhizoctonia solani AG8 infection, although SynComs were not more effective than single strains in reducing wheat root rot disease. Further, the mechanisms of interaction of the tested bacteria with each other and plants were explored. We found that nine bacteria and nine SynComs impacted the root growth of Arabidopsis. Nine bacteria and four SynComs significantly inhibited the growth of AG8 by producing volatiles. The cell-free supernatants from six bacteria inhibited the growth of AG8. Together, this study provided the potential for improving crop resilience by creating SynComs.

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Section: Discussionmentioning

confidence: 99%

Synthetic microbial consortia derived from rhizosphere soil protect wheat against a soilborne fungal pathogen

2022

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“…Biological control methods have shown great potential and are recognized as effective strategies for the control of post-harvest diseases, especially using antagonist microorganisms (biological control agents) and their metabolites ( Jiang et al, 2018 ; Yu et al, 2020 ; Chaves-Gómez et al, 2021 ). Biological control agents have the ability to inhibit post-harvest deterioration and provide efficient eco-compatible biocontrol of post-harvest diseases, on account of their broad-spectrum antimicrobial activity and reduced risk of emergence of resistant fungal strains.…”

Section: Introductionmentioning

confidence: 99%

Transcriptome profiling reveals the underlying mechanism of grape post-harvest pathogen Penicillium olsonii against the metabolites of Bacillus velezensis

et al. 2023

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IntroductionPathogen infection influences the post-harvest shelf life of grape berries. In a preliminary study, metabolites produced by Bacillus velezensis significantly inhibited the growth of the grape postharvest pathogen Penicillium olsonii.MethodsTo investigate the mechanism of interaction between B. velezensis and P. olsonii, a draft genome was generated for P. olsonii WHG5 using the Illumina NovaSeq platform, and the transcriptomic changes in WHG5 were analyzed in response to the exposure to B. velezensis metabolites (10% v/v).ResultsThe expression levels of genes associated with sporulation, including GCY1, brlA, and abaA, were down-regulated compared with those of the control. In addition, spore deformation and abnormal swelling of the conidiophore were observed. The expression of crucial enzymes, including fructose 2,6-bisphosphate and mannitol-2-dehydrogenase, was down-regulated, indicating that the glycolytic pathway of WHG5 was adversely affected by B. velezensis metabolites. The KEGG pathway enrichment analysis revealed that glutathione metabolism and the antioxidant enzyme system were involved in the response to B. velezensis metabolites. The down-regulation of the pathogenesis-related genes, PG1 and POT1, suggested that B. velezensis metabolites decreased the pathogenicity of P. olsonii. B. velezensis metabolites disrupted the homeostasis of reactive oxygen species in P. olsonii by affecting glucose metabolism, resulting in spore deformation and disruption of growth. In addition, the expression of key pathogenesis-related genes was down-regulated, thereby reducing the pathogenicity of P. olsonii.DisscusionThis study provides insights into the responses of P. olsonii to B. velezensis metabolites and identifies potential target genes that may be useful in biocontrol strategies for the suppression of post-harvest spoilage in grapes.

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“…Bacillus species can convert the complex forms or the precipitate forms of essential macronutrients to the available soluble forms for the plants during uptake by plant roots. Some of the reported strains of Bacillus pumilus and B. subtilis can positively fix available nitrogen, solubilize the phosphate, and produce auxins during in vitro studies [30] , [31] . It is reported that Bacillus species have nifH gene and produce nitrogenase involved in nitrogen fixation to delay senescence and enhance plant growth and yield [30] .…”

Section: Biocontrol Mechanism Of Bacillus Species ...mentioning

confidence: 99%

Perspective on utilization of <i>Bacillus</i> species as plant probiotics for different crops in adverse conditions

Singh,

Shyu

2024

AIMSMICRO

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<abstract> <p>Plant probiotic bacteria are a versatile group of bacteria isolated from different environmental sources to improve plant productivity and immunity. The potential of plant probiotic-based formulations is successfully seen as growth enhancement in economically important plants. For instance, endophytic <italic>Bacillus</italic> species acted as plant growth-promoting bacteria, influenced crops such as cowpea and lady's finger, and increased phytochemicals in crops such as high antioxidant content in tomato fruits. The present review aims to summarize the studies of <italic>Bacillus</italic> species retaining probiotic properties and compare them with the conventional fertilizers on the market. Plant probiotics aim to take over the world since it is the time to rejuvenate and restore the soil and achieve sustainable development goals for the future. Comprehensive coverage of all the <italic>Bacillus</italic> species used to maintain plant health, promote plant growth, and fight against pathogens is crucial for establishing sustainable agriculture to face global change. Additionally, it will give the latest insight into this multifunctional agent with a detailed biocontrol mechanism and explore the antagonistic effects of <italic>Bacillus</italic> species in different crops.</p> </abstract>

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Mixtures of Biological Control Agents and Organic Additives Improve Physiological Behavior in Cape Gooseberry Plants under Vascular Wilt Disease

Cited by 6 publications

References 96 publications

Synthetic microbial consortia derived from rhizosphere soil protect wheat against a soilborne fungal pathogen

Synthetic microbial consortia derived from rhizosphere soil protect wheat against a soilborne fungal pathogen

Transcriptome profiling reveals the underlying mechanism of grape post-harvest pathogen Penicillium olsonii against the metabolites of Bacillus velezensis

Perspective on utilization of <i>Bacillus</i> species as plant probiotics for different crops in adverse conditions

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