Effect of Exogenic Humic Substances on Various Growth Endpoints of Alternaria alternata and Trichoderma harzianum in the Experimental Conditions
| Autor: | Maria Pukalchik, D. A. Khundzhua, Svetlana V. Patsaeva, Elena Fedoseeva, Vera Terekhova |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification Growth medium Environmental Engineering integumentary system biology Renewable Energy Sustainability and the Environment Chemistry 020209 energy Biomass Trichoderma harzianum 02 engineering and technology biology.organism_classification complex mixtures 01 natural sciences Alternaria alternata Conidium chemistry.chemical_compound 010608 biotechnology 0202 electrical engineering electronic engineering information engineering Leonardite Organic matter Food science Waste Management and Disposal Mycelium |
| Zdroj: | Waste and Biomass Valorization. 12:211-222 |
| ISSN: | 1877-265X 1877-2641 |
| DOI: | 10.1007/s12649-020-00974-x |
| Popis: | Industrial humic products (HPs) manufactured from various organic matter resources, including fossils, peat, lake-bottom sediments and organic waste materials, have found multiple applications in soil environments. Fungi play a crucial role in the turnover of humic substances (HSs). However, the data on the biological effects of HSs on soil fungi are contradictory. Revealing mechanisms of how HSs interact with soil filamentous fungi is essential for understanding a sustainable soil system. Here we study the responses of phytopathogenic Alternaria alternata and the potential antagonist Trichoderma harzianum, to exogenic HPs (from leonardite and lignosulfonate) at two concentrations (0.1 and 0.02%) in growth media with varying sucrose concentrations (0, 3 and 30 g/L). We assessed the fungal growth endpoints including the mycelium biomass accumulation, fungal colony size and conidia production. Our results demonstrate the significant relationships between the extent of inhibitory/stimulation effect of HPs on the investigated fungi and the carbon status of the growth medium, some features of the fungal species, as well as the type and concentration of the introduced HPs. The responses of plant pathogens correlated specifically with various types of HPs. HP from lignosulfonate exhibited a more stimulating effect on A. alternata compared to the effect of HP from leonardite. |
| Databáze: | OpenAIRE |
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