Interference in quorum sensing and virulence of the phytopathogen Pseudomonas syringae pv. passiflorae by Bacillus and Variovorax species

Jose, Polpass Arul; Krishnamoorthy, Rajagopal; Kwon, Soon-Wo; Janahiraman, Veeranan; Senthilkumar, M.; Gopal, N. O.; Kumutha, K.; Anandham, Rangasamy

doi:10.1007/s10526-019-09932-6

Cited by 12 publications

(6 citation statements)

References 57 publications

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“…BCA mechanism of action may vary from antagonism to induction of plant resistance [6]. Identifying the mechanism of action of each biocontrol isolate was beyond the scope of this study; however, Trichoderma and Bacillus, two of the biocontrol candidates with high BE%, have been reported to promote plant growth, induce resistance, and antagonists of RSSC strains [6,16,[23][24][25]. Species of Variovorax and Taloromyces have been reported to have antagonistic metabolites, compete with plant pathogenic microbes, and promote plant growth [23,25,26].…”

Section: Resultsmentioning

confidence: 99%

“…Identifying the mechanism of action of each biocontrol isolate was beyond the scope of this study; however, Trichoderma and Bacillus, two of the biocontrol candidates with high BE%, have been reported to promote plant growth, induce resistance, and antagonists of RSSC strains [6,16,[23][24][25]. Species of Variovorax and Taloromyces have been reported to have antagonistic metabolites, compete with plant pathogenic microbes, and promote plant growth [23,25,26]. Using the seedling technique, this study demonstrated a fast and cost-effective screening of several BCA isolates with possible different mechanisms of action that can be selected for potential biocontrol application.…”

Section: Resultsmentioning

confidence: 99%

“…Using the seedling technique, this study demonstrated a fast and cost-effective screening of several BCA isolates with possible different mechanisms of action that can be selected for potential biocontrol application. Most studies select BCAs conducting in vitro analysis such as pair culturing to assess the BCA's antagonism effect on the pathogen [24,25,27]. Strains with no in vitro effect are often neglected and not tested in vivo.…”

Section: Resultsmentioning

confidence: 99%

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Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening

Maxwell¹,

Chang²,

Chen³

et al. 2022

Proceedings of the International Symposium Southeast Asia Vegetable 2021 (SEAVEG 2021)

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Tomato is among the most cultivated vegetable crops worldwide, and bacterial wilt (BW) caused by the Ralstonia solanacearum species complex (RSSC) is the most devastating disease affecting tomato, impacting food and nutrition security in many areas. Pesticides used for controlling plant diseases are hazardous to producers, consumers, and the environment, whereas biological control is potentially a sustainable and environmentally safe alternative for disease management. To identify efficient biocontrol agents (BCAs), twenty-five potential BCA isolates were screened for control efficacy to BW on ten-day-old tomato seedlings of highly susceptible (L390) and moderately resistant (L180) cultivars previously inoculated with R. solanacearum strain PSS4 (=Asian origin, Race 1, Phylotype I; Biovar 3). After ten days incubation at 28 °C in the growth chamber, wilting (W%) and biocontrol efficacy (BE%) percent were evaluated. Of the 25 BCAs tested, four significantly reduced W%, with BE% ranging from 50% to 80% for both varieties. The four BCA isolates were identified as Talaromyces sp., Trichoderma sp., Bacillus sp., and Variovorax sp. The seedling method allows the rapid and cost-effective in vivo screening of many potential BCAs to reliably identify those with higher bacterial wilt control efficacy for further testing.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening

Maxwell¹,

Chang²,

Chen³

et al. 2022

Proceedings of the International Symposium Southeast Asia Vegetable 2021 (SEAVEG 2021)

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“…AHL-degrading Lysinibacillus has been shown to reduce potato soft rot disease caused by Pectobacterium carotovorum subsp. carotovorum [76,77].…”

Section: Interference Of Quorum Sensing With Virulencementioning

confidence: 99%

Beneficial Soil Microbiomes and Their Potential Role in Plant Growth and Soil Fertility

Vincze,

Becze,

Laslo

et al. 2024

Agriculture

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The soil microbiome plays an important role in maintaining soil health, plant productivity, and soil ecosystem services. Current molecular-based studies have shed light on the fact that the soil microbiome has been quantitatively underestimated. In addition to metagenomic studies, metaproteomics and metatranscriptomic studies that target the functional part of the microbiome are becoming more common. These are important for a better understanding of the functional role of the microbiome and for deciphering plant-microbe interactions. Free-living beneficial bacteria that promote plant growth by colonizing plant roots are called plant growth-promoting rhizobacteria (PGPRs). They exert their beneficial effects in different ways, either by facilitating the uptake of nutrients and synthesizing particular compounds for plants or by preventing and protecting plants from diseases. A better understanding of plant-microbe interactions in both natural and agroecosystems will offer us a biotechnological tool for managing soil fertility and obtaining a high-yield food production system.

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“…Similarly, using AHL compound N ‐tetradecanoyl homoserine produced by pathogenic P. syringae pv. passiflorae as target substrate, Jose et al ( 2019 ) screened 11 Bacillus strains with AHL degradation activity, and pronounced that these agents can both inhibit the virulence factors and disease induction of P. syringae pv. passiflorae .…”

Section: Biocontrol Mechanisms Of Plant Pathogens By Bacill...mentioning

confidence: 99%

Biocontrol mechanisms of Bacillus: Improving the efficiency of green agriculture

Zhang,

Wang,

Shao

et al. 2023

Microbial Biotechnology

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Species of the genus Bacillus have been widely used for the biocontrol of plant diseases in the demand for sustainable agricultural development. New mechanisms underlying Bacillus biocontrol activity have been revealed with the development of microbiome and microbe‐plant interaction research. In this review, we first briefly introduce the typical Bacillus biocontrol mechanisms, such as the production of antimicrobial compounds, competition for niches/nutrients, and induction of systemic resistance. Then, we discussed in detail the new mechanisms of pathogen quorum sensing interference and reshaping of the soil microbiota. The “cry for help” mechanism was also introduced, in which plants can release specific signals under pathogen attack to recruit biocontrol Bacillus for root colonization against invasion. Finally, two emerging strategies for enhancing the biocontrol efficacy of Bacillus agents, including the construction of synthetic microbial consortia and the application of rhizosphere‐derived prebiotics, were proposed.

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Interference in quorum sensing and virulence of the phytopathogen Pseudomonas syringae pv. passiflorae by Bacillus and Variovorax species

Cited by 12 publications

References 57 publications

Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening

Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening

Beneficial Soil Microbiomes and Their Potential Role in Plant Growth and Soil Fertility

Biocontrol mechanisms of Bacillus: Improving the efficiency of green agriculture

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