mVOC 2.0: a database of microbial volatiles

Lemfack, Marie Chantal; Gohlke, Björn-Oliver; Toguem, Serge Mithérand Tengho; Preissner, Saskia; Piechulla, Birgit; Preißner, Robert

doi:10.1093/nar/gkx1016

Cited by 320 publications

(256 citation statements)

References 22 publications

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“…However, other BVCs produced by bacteria protect plants from biotic stress, and previous work demonstrated that B. subtilis strains produce a number of them (Fiddaman and Rossal, 1993; Chaurasia et al, 2005; Farrag et al, 2006; Arrebola et al, 2010). B. simplex and B. subtilis are known to synthesize 2-propanone, phenol, 1-decanol, 2-undecanone, 1-decanol, 1-dodecanol, methyl-tetradecanoate, and 2-ethyl-3,5-dimethylpyrazine, and many other microbial VOCs (Velivelli et al, 2015; Lemfack et al, 2018). Gu et al, 2007 found that B. simplex BVCs from six distinct isolates killed almost 100% of the parasitic nematodes Panagrellus redivivus and Bursaphelenchus xylophilus .…”

Section: Discussionmentioning

confidence: 99%

Antifungal Activity of Bacillus Species Against Fusarium and Analysis of the Potential Mechanisms Used in Biocontrol

et al. 2018

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Fusarium is a complex genus of ascomycete fungi that consists of plant pathogens of agricultural relevance. Controlling Fusarium infection in crops that leads to substantial yield losses is challenging. These economic losses along with environmental and human health concerns over the usage of chemicals in attaining disease control are shifting focus toward the use of biocontrol agents for effective control of phytopathogenic Fusarium spp. In the present study, an analysis of the plant-growth promoting (PGP) and biocontrol attributes of four bacilli (Bacillus simplex 30N-5, B. simplex 11, B. simplex 237, and B. subtilis 30VD-1) has been conducted. The production of cellulase, xylanase, pectinase, and chitinase in functional assays was studied, followed by in silico gene analysis of the PGP-related and biocontrol-associated genes. Of all the bacilli included in this study, B. subtilis 30VD-1 (30VD-1) demonstrated the most effective antagonism against Fusarium spp. under in vitro conditions. Additionally, 100 μg/ml of the crude 1-butanol extract of 30VD-1’s cell-free culture filtrate caused about 40% inhibition in radial growth of Fusarium spp. Pea seed bacterization with 30VD-1 led to considerable reduction in wilt severity in plants with about 35% increase in dry plant biomass over uninoculated plants growing in Fusarium-infested soil. Phase contrast microscopy demonstrated distortions and abnormal swellings in F. oxysporum hyphae on co-culturing with 30VD-1. The results suggest a multivariate mode of antagonism of 30VD-1 against phytopathogenic Fusarium spp., by producing chitinase, volatiles, and other antifungal molecules, the characterization of which is underway.

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Section: Discussionmentioning

confidence: 99%

Antifungal Activity of Bacillus Species Against Fusarium and Analysis of the Potential Mechanisms Used in Biocontrol

et al. 2018

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“…, Lemfack et al. ). Ketones undoubtedly belong to biologically active compounds, since they are able to participate in many chemical interactions (Forney and Markovetz ).…”

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confidence: 99%

“…The first microbial volatile database “mVOC” is available now (Lemfack et al. ). Bacterial VOCs are considered sensitive and specific biomarkers for bacterial detection in human specimens (Sohrabi et al.…”

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confidence: 99%

Inhibition of cyanobacterial photosynthetic activity by natural ketones

Voronova

Konyukhov

Кокшарова

et al. 2019

Journal of Phycology

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Microbial volatiles have a significant impact on the physiological functions of prokaryotic and eukaryotic organisms. Various ketones are present in volatile mixtures produced by plants, bacteria, and fungi. Our earlier results demonstrated the inhibitory effects of soil bacteria volatiles, including ketones, on cyanobacteria. In this work, we thoroughly examined the natural ketones, 2‐nonanone and 2‐undecanone to determine their influence on the photosynthetic activity in Synechococcus sp. PCC 7942. We observed for the first time that the ketones strongly inhibit electron transport through PSII in cyanobacteria cells in vivo. The addition of ketones decreases the quantum yield of primary PSII photoreactions and changes the PSII chlorophyll fluorescence induction curves. There are clear indications that the ketones inhibit electron transfer from QA to QB, electron transport at the donor side of PSII. The ketones can also modify the process of energy transfer from the antenna complex to the PSII reaction center and, by this means, increase both chlorophyll fluorescence quantum yield and the chlorophyll excited state lifetime. At the highest tested concentration (5 mM) 2‐nonanone also induced chlorophyll release from Synechococcus cells that strongly indicates the possible role of the ketones as detergents.

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“…Our data highlight that soil microbes were strongly associated with soil's volatilome. Bacteria and fungi are well known emitters of volatile compounds (Lemfack et al ., ), and we have speculated earlier based on undescribed (and mostly uncultivable) microbial taxa that soil might contain a huge diversity of undescribed volatiles (Schenkel et al ., ). This hypothesis is corroborated here by the fact that most volatiles of the present study could not be identified.…”

Section: Discussionmentioning

confidence: 94%

Linking soil's volatilome to microbes and plant roots highlights the importance of microbes as emitters of belowground volatile signals

Schenkel

Deveau

Niimi

et al. 2019

Environmental Microbiology

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Summary Plants and microbes release a plethora of volatiles that act as signals in plant–microbe interactions. Characterizing soil's volatilome and microbiome might shed light on the nature of relevant volatile signals and on their emitters. This hypothesis was tested by characterizing plant cover, soil's volatilome, nutrient content and microbiomes in three grasslands of the Swiss Jura Mountains. The fingerprints of soil's volatiles were generated by solid‐phase micro‐extraction gas chromatography/mass spectrometry, whereas high‐throughput sequencing was used to create a snapshot of soil's microbial communities. A high similarity was observed in plant communities of two out of three sites, which was mirrored by the soil's volatilome. Multiple factor analysis evidenced a strong association among soil's volatilome, plant and microbial communities. The proportion of volatiles correlated to single bacterial and fungal taxa was higher than for plants. This suggests that those organisms might be major contributors to the volatilome of grassland soils. These findings illustrate that key volatiles in grassland soils might be emitted by a handful of organisms that include specific plants and microbes. Further work will be needed to unravel the structure of belowground volatiles and understand their implications for plant health and development.

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mVOC 2.0: a database of microbial volatiles

Cited by 320 publications

References 22 publications

Antifungal Activity of Bacillus Species Against Fusarium and Analysis of the Potential Mechanisms Used in Biocontrol

Antifungal Activity of Bacillus Species Against Fusarium and Analysis of the Potential Mechanisms Used in Biocontrol

Inhibition of cyanobacterial photosynthetic activity by natural ketones

Linking soil's volatilome to microbes and plant roots highlights the importance of microbes as emitters of belowground volatile signals

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