Analysis of Volatile Organic Compounds Emitted by Plant Growth-Promoting Fungus Phoma sp. GS8-3 for Growth Promotion Effects on Tobacco

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  • Naznin Hushna Ara
    The United Graduate School of Agricultural Sciences, Gifu University
  • Kimura Minako
    Laboratory of Plant Pathology, Faculty of Applied Biological Sciences, Gifu University
  • Miyazawa Mitsuo
    Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University
  • Hyakumachi Mitsuro
    Laboratory of Plant Pathology, Faculty of Applied Biological Sciences, Gifu University

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  • Analysis of Volatile Organic Compounds Emitted by Plant Growth-Promoting Fungus <i>Phoma</i> sp. GS8-3 for Growth Promotion Effects on Tobacco
  • Analysis of volatile organic compounds emitted by plant growth-promoting fungus <italic>Phoma</italic> sp. GS8-3 for growth promotion effects on tobacco

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We extracted volatile organic compounds (VOCs) emitted by a plant growth-promoting fungus (PGPF) Phoma sp. GS8-3 by gas chromatography and identified them by mass spectrometry. All of the identified compounds belonged to C4-C8 hydrocarbons. Volatiles varied in number and quantity by the culture period of the fungus (in days). 2-Methyl-propanol and 3-methyl-butanol formed the main components of the volatile blends for all the culture periods of fungus. Growth-promoting effects of the identified synthetic compounds were analyzed individually and in blends using tobacco plants. We found that the mixture of volatiles extracted from 3-day-old culture showed significant growth promotion in tobacco in vitro. The volatile blend showed better growth promotion at lower than higher concentrations. Our results confirm the potential role of volatile organic compounds in the mechanism of growth enhancement by GS8-3.<br>

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