Limited Diclosulam Herbicide Uptake and Translocation-Induced Tolerance in Crotalaria juncea
| Autor: | Patricia Andrea Monquero, Jéssica Ferreira Lourenço Leal, Camila da Costa Barros de Souza, Rodrigo Floriano Pimpinato, Junior Borella, Valdemar Luiz Tornisielo, Camila Ferreira de Pinho |
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| Rok vydání: | 2019 |
| Předmět: |
Plant growth
Health Toxicology and Mutagenesis Chromosomal translocation 010501 environmental sciences Toxicology Photosynthesis 01 natural sciences Soil Crotalaria juncea 0105 earth and related environmental sciences Sulfonamides biology Herbicides Chlorophyll A fungi food and beverages Biological Transport 04 agricultural and veterinary sciences General Medicine Metabolism Triazoles biology.organism_classification Pollution Plant Leaves Horticulture 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Crotalaria |
| Zdroj: | Bulletin of environmental contamination and toxicology. 104(1) |
| ISSN: | 1432-0800 |
| Popis: | The study was to identify the potential tolerance of Crotalaria juncea to diclosulam uptake and translocation and its effects on the physiological metabolism of plants. Two experiments were carried out; I—Evaluation of uptake and translocation of 14C-diclosulam (35 g a.i. ha−1) in C. juncea, at seven and 14 days after emergence. II—Evaluation of chlorophyll a transient fluorescence of dark-adapted C. juncea leaves when applied diclosulam in pre-emergence. Plants of C. juncea presented an anatomical/metabolic barrier to diclosulam translocation in the stem, which may confer tolerance to this herbicidal, besides reduced translocation due to low accumulation in the cotyledons. In addition, plants can maintain photosynthetic metabolism active when growing in soil with diclosulam by not changing the dynamics of energy dissipation. Thus, when cultivated in soil with residual of diclosulam, C. juncea can tolerate the herbicide to maintain plant growth. |
| Databáze: | OpenAIRE |
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