TheStreptomycesvolatile 3-octanone alters auxin/cytokinin and growth inArabidopsis thalianavia the gene familyKISS ME DEADLY

Dotson, Bradley R.; Verschut, Vasiliki; Flärdh, Klas; Becher, Paul G.; Rasmusson, Allan G.

doi:10.1101/2020.02.15.949685

Cited by 5 publications

(3 citation statements)

References 53 publications

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“…Intriguingly, some VOCs produced by plant-associated bacteria, including Streptomyces , also have similar functions [ 159 ]. For example, 3-octanone produced by S. coelicolor , promotes the growth of Arabidopsis thaliana by altering auxin/cytokinin homeostasis [ 160 ]. Other VOCs produced by Streptomyces albulus inhibit the growth of the fungal pathogens Sclerotinia sclerotiorum (Family: Sclerotiniaceae) and Fusarium oxysporum (Family: Nectriaceae), which are responsible for cucumber Fusarium wilt and sclerotinia stem rot of oilseed rape, respectively [ 161 ].…”

Section: Discussionmentioning

confidence: 99%

Production of Plant-Associated Volatiles by Select Model and Industrially Important Streptomyces spp.

et al. 2020

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The Streptomyces produce a great diversity of specialized metabolites, including highly volatile compounds with potential biological activities. Volatile organic compounds (VOCs) produced by nine Streptomyces spp., some of which are of industrial importance, were collected and identified using gas chromatography–mass spectrometry (GC-MS). Biosynthetic gene clusters (BGCs) present in the genomes of the respective Streptomyces spp. were also predicted to match them with the VOCs detected. Overall, 33 specific VOCs were identified, of which the production of 16 has not been previously reported in the Streptomyces. Among chemical classes, the most abundant VOCs were terpenes, which is consistent with predicted biosynthetic capabilities. In addition, 27 of the identified VOCs were plant-associated, demonstrating that some Streptomyces spp. can also produce such molecules. It is possible that some of the VOCs detected in the current study have roles in the interaction of Streptomyces with plants and other higher organisms, which might provide opportunities for their application in agriculture or industry.

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Section: Discussionmentioning

confidence: 99%

Production of Plant-Associated Volatiles by Select Model and Industrially Important Streptomyces spp.

et al. 2020

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“…MapMan visualization showed that auxin signaling genes were also highly induced after 24 h in KB001-treated plants. A recent study identified 3-octanone as a Streptomyces compound that alters auxin/cytokinin homeostasis, resulting in the promotion of root growth (Dotson et al, 2020). Auxin signaling is known to play an important role in plant growth promotion (Zamioudis et al, 2013;Spaepen et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

A Plant Stress-Responsive Bioreporter Coupled With Transcriptomic Analysis Allows Rapid Screening for Biocontrols of Necrotrophic Fungal Pathogens

Belt

Foley

O’Sullivan

et al. 2021

Front. Mol. Biosci.

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Streptomyces are soil-borne Actinobacteria known to produce a wide range of enzymes, phytohormones, and metabolites including antifungal compounds, making these microbes fitting for use as biocontrol agents in agriculture. In this study, a plant reporter gene construct comprising the biotic stress-responsive glutathione S-transferase promoter GSTF7 linked to a luciferase output (GSTF7:luc) was used to screen a collection of Actinobacteria candidates for manipulation of plant biotic stress responses and their potential as biocontrol agents. We identified a Streptomyces isolate (KB001) as a strong candidate and demonstrated successful protection against two necrotrophic fungal pathogens, Sclerotinia sclerotiorum and Rhizoctonia solani, but not against a bacterial pathogen (Pseudomonas syringe). Treatment of Arabidopsis plants with either KB001 microbial culture or its secreted compounds induced a range of stress and defense response-related genes like pathogenesis-related (PR) and hormone signaling pathways. Global transcriptomic analysis showed that both treatments shared highly induced expression of reactive oxygen species and auxin signaling pathways at 6 and 24 h posttreatment, while some other responses were treatment specific. This study demonstrates that GSTF7 is a suitable marker for the rapid and preliminary screening of beneficial bacteria and selection of candidates with potential for application as biocontrols in agriculture, including the Streptomyces KB001 that was characterized here, and could provide protection against necrotrophic fungal pathogens.

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“…Streptomyces spp. produce 3-octanone, which has been reported to enhance root growth in Arabidopsis ( 26 ). Hexadecane promoted plant growth and induced systemic resistance in Arabidopsis plants against Pectobacterium carotovorum and Pseudomonas syringae ( 27 ).…”

Section: Introductionmentioning

confidence: 99%

Volatile Organic Compounds Emitted by the Biocontrol Agent Pythium oligandrum Contribute to Ginger Plant Growth and Disease Resistance

et al. 2023

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Plant growth promotion plays a vital role in enhancing production of agricultural crops, and Pythium oligandrum is known for its plant growth-promoting potential through production of auxins and induction of resistance by elicitors. This study highlights the significance of P. oligandrum -produced VOCs in plant growth promotion and disease resistance.

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TheStreptomycesvolatile 3-octanone alters auxin/cytokinin and growth inArabidopsis thalianavia the gene familyKISS ME DEADLY

Abstract: Plants enhance their growth in the presence of particular soil bacteria due to volatile compounds affecting

Cited by 5 publications

References 53 publications

Production of Plant-Associated Volatiles by Select Model and Industrially Important Streptomyces spp.

Production of Plant-Associated Volatiles by Select Model and Industrially Important Streptomyces spp.

A Plant Stress-Responsive Bioreporter Coupled With Transcriptomic Analysis Allows Rapid Screening for Biocontrols of Necrotrophic Fungal Pathogens

Volatile Organic Compounds Emitted by the Biocontrol Agent Pythium oligandrum Contribute to Ginger Plant Growth and Disease Resistance

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