Ecotoxicological test to assess effects of herbicides on spore germination of Rhizophagus clarus and Gigaspora albida
| Autor: | Sonia Purin da Cruz, Gilvani Carla Mallmann, Aline de Liz Ronsani Malfatti, Osmar Klauberg-Filho, Luís Carlos Iuñes de Oliveira Filho, Letícia Scopel Camargo Carniel |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Paraquat
Glyphosate Health Toxicology and Mutagenesis Glycine 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Biology Ecotoxicology Plant Roots 01 natural sciences Environmental pollution Soil chemistry.chemical_compound Rhizophagus (fungus) Mycorrhizae Spore germination Soil Pollutants Soil ecology GE1-350 Glomeromycota Soil Microbiology 0105 earth and related environmental sciences Soil ecotoxicology 021110 strategic defence & security studies Herbicides Fungi Public Health Environmental and Occupational Health Agriculture General Medicine Spores Fungal biology.organism_classification Pollution Spore Environmental sciences Germination inhibition Horticulture TD172-193.5 chemistry Germination Diuron |
| Zdroj: | Ecotoxicology and Environmental Safety, Vol 207, Iss, Pp 111599-(2021) |
| ISSN: | 0147-6513 |
| DOI: | 10.1016/j.ecoenv.2020.111599 |
| Popis: | Given the essential role of arbuscular mycorrhizal fungi (AMF) in soil systems and agriculture, their use as biological indicators has risen in all fields of microbiology research. However, AMF sensitivity to chemical pesticides is poorly understood in field conditions, and not explored in ecotoxicology protocols. Hence, the goal of this study was to evaluate the effects of different concentrations of glyphosate (Roundup®) and diuron+paraquat (Gramocil®) on the germination of spores of Gigaspora albida and Rhizophagus clarus in a tropical artificial soil. This study was conducted in 2019 at the Soil Ecology and Ecotoxicology Laboratory of the Universidade do Estado de Santa Catarina. The nominal concentrations of glyphosate were 0, 10, 50, 100, 250, 500, 750 and 1000 mg a.i. kg−1. For diuron+paraquat, the concentrations tested were 0, 10 + 20, 50 + 100, 100 + 200, 250 + 500, 500 + 1000, 750 + 1500 and 1000 + 2000 mg a.i. kg−1. Glyphosate did not alter germination of G. albida, but germination inhibition of R. clarus spores was of 30.8% at 1000 mg kg−1. Diuron+paraquat inhibited by 8.0% germination of G. albida, but only at the highest concentration tested. On the other hand, effects on R. clarus were detected at 50 + 100 mg kg−1 concentration and above, and inhibition was as high as 57.7% at the highest concentration evaluated. These results suggest distinct response mechanisms of Rhizophagus and Gigaspora when exposed to herbicides, with the former being more sensitive than the later. |
| Databáze: | OpenAIRE |
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