Volatile dimethyl disulfide affects root system architecture of Arabidopsis via modulation of canonical auxin signaling pathways

Kim, Kang-Min; Cho, Min; Lee, Kui Jae

doi:10.1007/s42398-019-00060-6

Cited by 17 publications

(15 citation statements)

References 24 publications

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“…2). The results are in agreement with previous studies in which acetoin, 2,3-BD, and DMDS produced by Bacillus, Pseudomonas, Stenotrophomonas, and Burkholderia improved plant www.nature.com/scientificreports www.nature.com/scientificreports/ growth by increasing the chlorophyll content, altering phytohormone expression, and providing the sulfur nutrient under sulfur-limiting conditions 10,[13][14][15][16]27 .…”

Section: Discussionsupporting

confidence: 92%

“…However, few studies have been conducted on the mode of action of such compounds. In a previous study, we observed a dose-dependent effect of DMDS on the growth of Arabidopsis and its interference with the auxin signaling pathways 13 . In this study, we show that volatile DMDS not only controls the fungal pathogens but can also induce resistance against S. minor in tomato.…”

Section: Discussionmentioning

confidence: 86%

“…Tomato seeds (cultivar cerasiforme; Green Heart Bio Pvt. Ltd., South Korea) were surface sterilized using 0.1% mercury chloride, as described by Tyagi et al 13 , and grown aseptically on sterilized filter paper. For in planta experiments, young seedlings were transferred to pots filled with sterilized soil (gardening soil:vermiculite:perlite = 4:3:3) and incubated in the plant-growth chamber under 16-h www.nature.com/scientificreports www.nature.com/scientificreports/ day/8-h night condition with 200 μmol/m 2 /sec light intensity at 24 °C.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, MVCs, mainly consisting of benzyl alcohol, propanol, butanol, and other sulfur-containing compounds, were reported to improve the growth of Arabidopsis, Nicotiana, and agaves 8,12 . The root system of Arabidopsis was modulated upon exposure to the volatile DMDS, which affected the canonical auxin signaling pathway 13 . Increased number of lateral roots and root hairs helped the plants to absorb more nutrients resulting in the improvement of their health.…”

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confidence: 99%

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Dimethyl disulfide exerts antifungal activity against Sclerotinia minor by damaging its membrane and induces systemic resistance in host plants

Lee

Shukla

Chae

2020

Sci Rep

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Microbial volatile compounds (MVCs) significantly influence the growth of plants and phytopathogens. However, the practical application of MVCs at the field level is limited by the fact that the concentrations at which these compounds antagonize the pathogens are often toxic for the plants. In this study, we investigated the effect of dimethyl disulfide (DMDS), one of the MVCs produced by microorganisms, on the fitness of tomato plants and its fungicidal potential against a fungal phytopathogen, Sclerotinia minor. DMDS showed strong fungicidal and plant growth promoting activities with regard to the inhibition of mycelial growth, sclerotia formation, and germination, and reduction of disease symptoms in tomato plants infected with S. minor. DMDS exposure significantly upregulated the expression of genes related to growth and defense against the pathogen in tomato. Especially, the overexpression of PR1 and PR5 suggested the involvement of the salicylic acid pathway in the induction of systemic resistance. Several morphological and ultrastructural changes were observed in the cell membrane of S. minor and the expression of ergosterol biosynthesis gene was significantly downregulated, suggesting that DMDS damaged the membrane, thereby affecting the growth and pathogenicity of the fungus. In conclusion, the tripartite interaction studies among pathogenic fungus, DMDS, and tomato revealed that DMDS played roles in antagonizing pathogen as well as improving the growth and disease resistance of tomato. Our findings provide new insights into the potential of volatile DMDS as an effective tool against sclerotial rot disease.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 86%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Dimethyl disulfide exerts antifungal activity against Sclerotinia minor by damaging its membrane and induces systemic resistance in host plants

Lee

Shukla

Chae

2020

Sci Rep

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“…Exposure of A. thaliana to 1‐decene, a plant growth promoting Trichoderma VOC, led to the differential expression of 123 genes, 17 of which were upregulated and several of which were auxin related (Lee et al ., 2019). Similarly, dimethyl disulfide altered the root system architecture of A. thaliana , which were dependent on canonical auxin signalling pathways, with mutants deficient in auxin responsive genes and transcription factors not exhibiting lateral root development or growth enhancement (Tyagi et al ., 2019).…”

Section: Role Of Volatiles In Plant Growth Promotionmentioning

confidence: 99%

Harnessing microbial volatiles to replace pesticides and fertilizers

Thomas

Withall

Birkett

2020

Microbial Biotechnology

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Global agricultural systems are under increasing pressure to deliver sufficient, healthy food for a growing population. Seasonal inputs, including synthetic pesticides and fertilizers, are applied to crops to reduce losses by pathogens, and enhance crop biomass, although their production and application can also incur several economic and environmental penalties. New solutions are therefore urgently required to enhance crop yield whilst reducing dependence on these seasonal inputs. Volatile Organic Compounds (VOCs) produced by soil microorganisms may provide alternative, sustainable solutions, due to their ability to inhibit plant pathogens, induce plant resistance against pathogens and enhance plant growth promotion. This review will highlight recent advances in our understanding of the biological activities of microbial VOCs (mVOCs), providing perspectives on research required to develop them into viable alternatives to current unsustainable seasonal inputs. This can identify potential new avenues for mVOC research and stimulate discussion across the academic community and agri-business sector.

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Bacillus toyonensis COPE52 Modifies Lipid and Fatty Acid Composition, Exhibits Antifungal Activity, and Stimulates Growth of Tomato Plants Under Saline Conditions

et al. 2020

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Volatile dimethyl disulfide affects root system architecture of Arabidopsis via modulation of canonical auxin signaling pathways

Cited by 17 publications

References 24 publications

Dimethyl disulfide exerts antifungal activity against Sclerotinia minor by damaging its membrane and induces systemic resistance in host plants

Dimethyl disulfide exerts antifungal activity against Sclerotinia minor by damaging its membrane and induces systemic resistance in host plants

Harnessing microbial volatiles to replace pesticides and fertilizers

Bacillus toyonensis COPE52 Modifies Lipid and Fatty Acid Composition, Exhibits Antifungal Activity, and Stimulates Growth of Tomato Plants Under Saline Conditions

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