Extended Plant Metarhizobiome: Understanding Volatile Organic Compound Signaling in Plant-Microbe Metapopulation Networks

Raza, Waseem; Wei, Zhong; Jousset, Alexandre; Shen, Qirong; Friman, Ville‐Petri

doi:10.1128/msystems.00849-21

Cited by 27 publications

(18 citation statements)

References 78 publications

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“…First evidence for this strategy was through disease suppressive soils studies [68][69][70]. There is growing evidence that plants recruit beneficial microorganisms through the emission of volatile organic compounds [71,72] or emitted secondary metabolites from roots as among others, coumarins, which can modulate the root microbiota to face iron deficiency [67,73]. Secretion of salicylic acid, ACCEPTED MANUSCRIPT / CLEAN COPY malic acid, flavonoids and strigolactones have also been shown to shape root microbiota assembly [74][75][76][77].…”

Section: From Transient Dysbiotic State To Plant Resilience: the Cry ...mentioning

confidence: 99%

Plant microbiota dysbiosis and the Anna Karenina Principle

Arnault

Mony

Vandenkoornhuyse

2023

Trends in Plant Science

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Section: From Transient Dysbiotic State To Plant Resilience: the Cry ...mentioning

confidence: 99%

Plant microbiota dysbiosis and the Anna Karenina Principle

Arnault

Mony

Vandenkoornhuyse

2023

Trends in Plant Science

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“…It has been proved that organic acids can inhibit soil-borne fungi, such as F. oxysporum , by acidifying the environment and changing the cell membrane permeability of pathogen ( Momma et al, 2006 ). Accumulating evidence suggests that VOCs can act as antimicrobial agents, and are important for the regulation of the interactions between pathogens and beneficial microorganisms ( Raza et al, 2021 ). GCMS analysis identified 29 unique VOCs in the AJ, consisting mainly of esters (11) and alcohols (8) ( Supplementary Table 5 ).…”

Section: Discussionmentioning

confidence: 99%

Agricultural Jiaosu: An Eco-Friendly and Cost-Effective Control Strategy for Suppressing Fusarium Root Rot Disease in Astragalus membranaceus

et al. 2022

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Root rot caused by the pathogenic fungi of the Fusarium genus poses a great threat to the yield and quality of medicinal plants. The application of Agricultural Jiaosu (AJ), which contains beneficial microbes and metabolites, represents a promising disease control strategy. However, the action-effect of AJ on Fusarium root rot disease remains unclear. In the present study, we evaluated the characteristics and antifungal activity of AJ fermented using waste leaves and stems of medicinal plants, and elucidated the mechanisms of AJ action by quantitative real-time PCR and redundancy analysis. The effects of AJ and antagonistic microbes isolated from it on disease suppression were further validated through a pot experiment. Our results indicate that the AJ was rich in beneficial microorganisms (Bacillus, Pseudomonas, and Lactobacillus), organic acids (acetic, formic, and butyric acids) and volatile organic compounds (alcohols and esters). It could effectively inhibit Fusarium oxysporum and the half-maximal inhibitory concentration (IC50) was 13.64%. The antifungal contribution rate of the microbial components of AJ reached 46.48%. Notably, the redundancy analysis revealed that the Bacillus and Pseudomonas genera occupied the main niche during the whole inhibition process. Moreover, the abundance of the Bacillus, Pseudomonas, and Lactobacillus genera were positively correlated with the pH-value, lactic, formic and butyric acids. The results showed that the combined effects of beneficial microbes and organic acid metabolites increased the efficacy of the AJ antifungal activity. The isolation and identification of AJ’s antagonistic microbes detected 47 isolates that exhibited antagonistic activities against F. oxysporum in vitro. In particular, Bacillus subtilis and Bacillus velezensis presented the strongest antifungal activity. In the pot experiment, the application of AJ and these two Bacillus species significantly reduced the disease incidence of Fusarium root rot and promoted the growth of Astragalus. The present study provides a cost-effective method to control of Fusarium root rot disease, and establishes a whole-plant recycling pattern to promote the sustainable development of medicinal plant cultivation.

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“…During host colonization, filamentous fungi and oomycetes release a diverse array of glycoside hydrolases (GHs) as virulence factors (effectors) onto their cell surfaces and the surrounding extracellular environment, which plants utilize during host microbial colonization [ 47 ]. In addition to the aforementioned soluble secondary metabolites, plants also release diverse volatile organic compounds (such as phenylpropanoids, terpenoids, benzenoids, and β-caryophyllenes) that diffuse through the air- and water-filled pores in soil interactions, which further interconnect the plant rhizobiomes through microbial metapopulation networks [ 48 ]. Volatile organic compounds (VOC) predominantly influence soil microbiomes, and contrasting differences in their richness in soil may be correlated with the magnitude of the signal produced by the VOC [ 49 ].…”

Section: Secondary Metabolite: Microbial and Plant Community Modulato...mentioning

confidence: 99%

Tapping into Plant–Microbiome Interactions through the Lens of Multi-Omics Techniques

Mishra

Sudalaimuthuasari

Hazzouri

et al. 2022

Cells

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This review highlights the pivotal role of root exudates in the rhizosphere, especially the interactions between plants and microbes and between plants and plants. Root exudates determine soil nutrient mobilization, plant nutritional status, and the communication of plant roots with microbes. Root exudates contain diverse specialized signaling metabolites (primary and secondary). The spatial behavior of these metabolites around the root zone strongly influences rhizosphere microorganisms through an intimate compatible interaction, thereby regulating complex biological and ecological mechanisms. In this context, we reviewed the current understanding of the biological phenomenon of allelopathy, which is mediated by phytotoxic compounds (called allelochemicals) released by plants into the soil that affect the growth, survival, development, ecological infestation, and intensification of other plant species and microbes in natural communities or agricultural systems. Advances in next-generation sequencing (NGS), such as metagenomics and metatranscriptomics, have opened the possibility of better understanding the effects of secreted metabolites on the composition and activity of root-associated microbial communities. Nevertheless, understanding the role of secretory metabolites in microbiome manipulation can assist in designing next-generation microbial inoculants for targeted disease mitigation and improved plant growth using the synthetic microbial communities (SynComs) tool. Besides a discussion on different approaches, we highlighted the advantages of conjugation of metabolomic approaches with genetic design (metabolite-based genome-wide association studies) in dissecting metabolome diversity and understanding the genetic components of metabolite accumulation. Recent advances in the field of metabolomics have expedited comprehensive and rapid profiling and discovery of novel bioactive compounds in root exudates. In this context, we discussed the expanding array of metabolomics platforms for metabolome profiling and their integration with multivariate data analysis, which is crucial to explore the biosynthesis pathway, as well as the regulation of associated pathways at the gene, transcript, and protein levels, and finally their role in determining and shaping the rhizomicrobiome.

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Extended Plant Metarhizobiome: Understanding Volatile Organic Compound Signaling in Plant-Microbe Metapopulation Networks

Cited by 27 publications

References 78 publications

Plant microbiota dysbiosis and the Anna Karenina Principle

Plant microbiota dysbiosis and the Anna Karenina Principle

Agricultural Jiaosu: An Eco-Friendly and Cost-Effective Control Strategy for Suppressing Fusarium Root Rot Disease in Astragalus membranaceus

Tapping into Plant–Microbiome Interactions through the Lens of Multi-Omics Techniques

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