Effects of fungal volatile organic compounds on Arabidopsis thaliana growth and gene expression
| Autor: | Samantha Lee, Gregory Behringer, Richard Hung, Joan W. Bennett |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification Ecology biology Ecological Modeling fungi food and beverages Plant Science Fungus biology.organism_classification 010603 evolutionary biology 01 natural sciences chemistry Auxin Arabidopsis Trichoderma Gene expression Botany Shoot Arabidopsis thaliana Gene Ecology Evolution Behavior and Systematics 010606 plant biology & botany |
| Zdroj: | Fungal Ecology. 37:1-9 |
| ISSN: | 1754-5048 |
| DOI: | 10.1016/j.funeco.2018.08.004 |
| Popis: | Many microorganisms produce volatile organic compounds (VOCs) with biological effects on plants. In this study, Arabidopsis seeds or 14-day-old vegetative plants were exposed to 0.5 μg/l of chemical standards of 26 VOCs previously identified from the biocontrol fungus Trichoderma. Seven compounds (1-decene, 2-heptylfuran, 2-methyl-1-propanol, 2-methyl-1-butanol, 3-methyl-1- butanol, 2-heptanone, and 1-octen-3-ol) were further tested at the physiological concentration (10 ng/l) and 3-methyl-1-butanol, 1-decene, and 2-heptylfuran induced significant increases in fresh weight and total chlorophyll content. Plants exposed to 1-decene had the greatest increase in plant fresh shoot weight (38.9%) and chlorophyll content (67.8%). An RNA sequencing analysis was performed on plants treated with vapors of 1-decene. The expression of 123 genes was differentially affected, encompassing genes involved in cell wall modification, auxin induction, stress, and defense responses, with several major classes of stress-related genes showing down-regulation. To our knowledge, this is the first report of the effect of a plant growth promoting VOC on gene expression in Arabidopsis thaliana. As the role of fungal VOCs in biocontrol moves from correlative studies to more hypothesis driven approaches, our findings can guide both basic and applied studies in agricultural research. |
| Databáze: | OpenAIRE |
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