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Volatile organic compounds of some Trichoderma spp. increase growth and induce salt tolerance in Arabidopsis thaliana |
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| Institution: | 1. Bu-Ali Sina University, Department of Plant Protection, College of Agriculture, Hamedan, Iran;2. Razi University, Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, Kermanshah, Iran;1. Division of Biotechnology, Chonbuk National University, 79 Gobong-ro, Iksan-si, Jeollabuk-do 54596, Republic of Korea;2. Advanced Institute of Environment and Bioscience, Plant Medical Research Center, and Institute of Bio-industry, Chonbuk National University, Republic of Korea;1. Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration, Wanju 565-851, South Korea;2. Department of Microbial Ecology, Netherlands Institute of Ecology, 6708 PB, Wageningen, The Netherlands;1. Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET), Universidad Nacional de Córdoba, Avenida Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina;2. Instituto de Ciencia y Tecnología de los Alimentos (ICTA), FCEFyN−Universidad Nacional de Córdoba, Avenida Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina;1. Department of Plant Pathology, University of Georgia, Athens, GA, United States;2. Toxicology and Mycotoxin Research Unit, National Poultry Research Center, USDA-ARS, Athens, GA, United States |
| Abstract: | Many beneficial effects of Trichoderma spp. on plant growth and/or resistance to biotic/abiotic stresses can result from the production of bioactive compounds including volatile organic compounds (VOCs). We evaluated the effects of the volatile mixtures from 13 strains of different Trichoderma species on induction of tolerance to salt stress (100 mM NaCl) as well as growth promotion of Arabidopsis thaliana. Plants responded differently due to the presence of VOCs from various Trichoderma species ranging from both growth promotion and induction of salt tolerance to no significant changes under any of the conditions tested. In plants exposed for 2 weeks to VOCs of the selected strain, i.e. Trichoderma koningii, there was less H2O2 accumulation under salt stress compared to that in control plants. This result may reflect the possible role of VOCs of this strain in plant protection against oxidative damage under salt stress. Together, induction of salt tolerance using VOCs should be added to the known mechanisms of plant vigor enhancement by Trichoderma spp. |
| Keywords: | Volatile organic compounds (VOCs) Induced systemic tolerance (IST) Abiotic stress Growth promotion Salt tolerance Bioactive compounds 3 3′-Diaminobenzidine Reactive oxygen species (ROS) |
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