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Radiometric approaches with carbon-14-labeled molecules for determining herbicide fate in plant systems.
Munhoz-Garcia, Gustavo Vinícios; Takeshita, Vanessa; Pinácio, Camila de Werk; Cardoso, Brian Cintra; Vecchia, Bruno Dalla; Nalin, Daniel; Oliveira, Ana Laura Camachos de; Felix, Leandro Fernando; Tornisielo, Valdemar Luiz.
Afiliación
  • Munhoz-Garcia GV; Center of Nuclear Energy in Agriculture, University of São Paulo, Av. Centenário 303, Piracicaba, SP 13400-970, Brazil. Electronic address: gvmgarcia@usp.br.
  • Takeshita V; Center of Nuclear Energy in Agriculture, University of São Paulo, Av. Centenário 303, Piracicaba, SP 13400-970, Brazil. Electronic address: vanessatakeshita@usp.br.
  • Pinácio CW; Superior School of Agriculture "Luiz de Queiroz", University of São Paulo, Av. Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil.
  • Cardoso BC; Superior School of Agriculture "Luiz de Queiroz", University of São Paulo, Av. Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil.
  • Vecchia BD; Superior School of Agriculture "Luiz de Queiroz", University of São Paulo, Av. Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil.
  • Nalin D; Center of Nuclear Energy in Agriculture, University of São Paulo, Av. Centenário 303, Piracicaba, SP 13400-970, Brazil.
  • Oliveira ALC; Superior School of Agriculture "Luiz de Queiroz", University of São Paulo, Av. Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil.
  • Felix LF; Superior School of Agriculture "Luiz de Queiroz", University of São Paulo, Av. Pádua Dias, 11, Piracicaba, SP 13418-900, Brazil.
  • Tornisielo VL; Center of Nuclear Energy in Agriculture, University of São Paulo, Av. Centenário 303, Piracicaba, SP 13400-970, Brazil.
Ecotoxicol Environ Saf ; 284: 117003, 2024 Sep 07.
Article en En | MEDLINE | ID: mdl-39244878
ABSTRACT
Weeds cause economic losses in cropping systems, leading to the use of 1.7 million tons of herbicides worldwide for weed control annually. Once in the environment, herbicides can reach non-target organisms, causing negative impacts on the ecosystem. Herbicide retention, transport, and degradation processes determine their environmental fate and are essential to assure the safety of these molecules. Radiometric strategies using carbon-14 herbicides (14C) are suitable approaches for determining herbicide absorption, translocation, degradation, retention, and transport in soil, plants, and water. In this work, we demonstrate how 14C-herbicides can be used from different perspectives. Our work focused on herbicide-plant-environment interactions when the herbicide is applied (a) through the leaf, (b) in the soil, and (c) in the water. We also quantified the mass balance in each experiment. 14C-mesotrione foliar absorption increased with oil and adjuvant addition (5-6 % to 25-46 %), and translocation increased only with adjuvant. More than 80 % of 14C-quinclorac and 14C-indaziflam remained in the soil and cover crops species absorbed less than 20 % of the total herbicides applied. In water systems, Salvinia spp. plants removed 10-18 % of atrazine from the water. Atrazine metabolism was not influenced by the presence of the plants. The radiometric strategies used were able to quantify the fate of the herbicide in different plant systems and the mass balance varied from 70 % to 130 %. Importantly, we highlight a critical and practical view of tracking herbicides in different matrices. This technique can aid scientists to explore other pesticides as environmental contaminants.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ecotoxicol Environ Saf Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Ecotoxicol Environ Saf Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos