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Krenchinski FH, Costa RN, Pereira VGC, Bevilaqua NC, Alcántara-de la Cruz R, Velini ED, Carbonari CA. Glyphosate hormesis induced by treatment via seed stimulates the growth and biomass accumulation in soybean seedlings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 918:170387. [PMID: 38280604 DOI: 10.1016/j.scitotenv.2024.170387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 01/17/2024] [Accepted: 01/21/2024] [Indexed: 01/29/2024]
Abstract
Glyphosate hormesis, identified as a potential means to enhance crop yields, encounters practical constraints because it is typically assessed through foliar applications. The expression and extend of hormesis in this approach are influenced by unpredictable environmental conditions, highlighting the need to explore alternative glyphosate application methods, such as seed treatment. This study aimed to assess glyphosate hormesis on growth rates and biomass accumulation in seedlings soybean cultivars. Two dose-response experiments [doses from 0 to 2880 g acid equivalent (ae) ha-1], one via foliar and one via seed, were conducted on three soybean cultivars [one non-glyphosate-resistant (NGR) and two glyphosate-resistant (GR, one RR and one RR2)]. In a subsequent experiment, three safe glyphosate doses (0, 90 and 180 g ae ha-1) applied via seed were evaluated on four soybean cultivars (two RR and two RR2). For foliar applications, the range of glyphosate doses increasing growth rates and dry biomass by 12-28 % were 5.6-45 g ae ha-1 for the NGR cultivar, of 45-720 g ae ha-1 for RR and of 11.25-180 g ae ha-1 for RR2. In the seed treatment, biomass increases of 16-60 % occurred at 45-180 g ae ha-1 for the NGR and RR cultivars, and 90-360 g ae ha-1 for RR2. Glyphosate doses of 90 and 180 g ae ha-1, applied via seeds, provided greater growth and biomass accumulation for the RR and RR2 soybean cultivars. Both foliar and seed applications of glyphosate increased growth and biomass accumulation in soybean cultivars, with seed treatments showing greater and more consistent enhancements. These findings propose practical and viable alternative for harnessing glyphosate hormesis to facilitate the early development of soybeans and potentially enhance crop yield.
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Affiliation(s)
- Fábio Henrique Krenchinski
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034 Botucatu, Brazil
| | - Renato Nunes Costa
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034 Botucatu, Brazil
| | - Vinicius Gabriel Canepelle Pereira
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034 Botucatu, Brazil
| | - Natália Cunha Bevilaqua
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034 Botucatu, Brazil
| | - Ricardo Alcántara-de la Cruz
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034 Botucatu, Brazil.
| | - Edivaldo D Velini
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034 Botucatu, Brazil
| | - Caio A Carbonari
- Center for Advanced Research in Weed Science, Department of Plant Protection, College of Agricultural Sciences, São Paulo State University, 18610-034 Botucatu, Brazil
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de Faria GS, Carlos L, Jakelaitis A, de Freitas STF, Vicentini TA, Silva IOF, Vasconcelos Filho SC, Lourenço LL, Farnese FS, Batista MA, Vitorino LC. Hormetic Effect Caused by Sublethal Doses of Glyphosate on Toona ciliata M. Roem. PLANTS (BASEL, SWITZERLAND) 2023; 12:4163. [PMID: 38140490 PMCID: PMC10747235 DOI: 10.3390/plants12244163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/08/2023] [Accepted: 11/15/2023] [Indexed: 12/24/2023]
Abstract
This study aimed to evaluate the response of Toona ciliata seedlings to sublethal doses of glyphosate. The increasing use of glyphosate in agriculture concerns the scientific community, as the drift of this pollutant into aquatic systems or atmospheric currents can affect non-target species. Therefore, we need to understand how non-target species respond to small doses of this herbicide. T. ciliata seedlings (clone BV-1110) were exposed to sublethal doses of glyphosate (0, 9.6, 19.2, 38.4, 76.8 g ae ha-1). Anatomical, physiological, and photochemical analyses were performed 60 days after herbicide application, and growth assessments were carried out after 160 days of cultivation. We found that sublethal doses of glyphosate above 19.2 g ae ha-1 induced toxicity symptoms in Toona ciliata leaves. These symptoms were mild in some cases, such as chlorosis, but severe in other cases, such as tissue necrosis. We observed a positive relationship between increased plant height and photochemical yield with plant exposure to sub-doses 9.6 and 19.2 g ae ha-1. A sublethal dose of 38.4 g ae ha-1 improved the photosynthetic rate and carboxylation efficiency. Thus, we confirmed the hypothesis of a hormetic effect when T. ciliata was exposed to sub-doses of glyphosate equal to or lower than 38.4 g ae ha-1. However, the sublethal dose of 76.8 g ae ha-1 must be considered toxic, impacting photosynthetic activity and, consequently, the height of T. ciliata. The stem diameter of T. ciliata responded positively to increasing glyphosate doses. This occurs to compensate for the negative effect of glyphosate on water absorption. Further research will provide valuable information for harnessing the potential benefits of hormesis to improve the productivity of T. ciliata.
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Affiliation(s)
- Giselle Santos de Faria
- Programa de Pós-Graduação em Ciências Agrárias, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (G.S.d.F.); (L.C.); (A.J.); (S.T.F.d.F.); (I.O.F.S.)
| | - Leandro Carlos
- Programa de Pós-Graduação em Ciências Agrárias, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (G.S.d.F.); (L.C.); (A.J.); (S.T.F.d.F.); (I.O.F.S.)
| | - Adriano Jakelaitis
- Programa de Pós-Graduação em Ciências Agrárias, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (G.S.d.F.); (L.C.); (A.J.); (S.T.F.d.F.); (I.O.F.S.)
| | - Samylla Tassia Ferreira de Freitas
- Programa de Pós-Graduação em Ciências Agrárias, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (G.S.d.F.); (L.C.); (A.J.); (S.T.F.d.F.); (I.O.F.S.)
| | - Taíza Andressa Vicentini
- Programa de Pós-Graduação em Biodiversidade e Conservação, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (T.A.V.); (S.C.V.F.); (L.L.L.); (F.S.F.)
| | - Igor Olacir Fernandes Silva
- Programa de Pós-Graduação em Ciências Agrárias, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (G.S.d.F.); (L.C.); (A.J.); (S.T.F.d.F.); (I.O.F.S.)
| | - Sebastião Carvalho Vasconcelos Filho
- Programa de Pós-Graduação em Biodiversidade e Conservação, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (T.A.V.); (S.C.V.F.); (L.L.L.); (F.S.F.)
| | - Lucas Loram Lourenço
- Programa de Pós-Graduação em Biodiversidade e Conservação, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (T.A.V.); (S.C.V.F.); (L.L.L.); (F.S.F.)
| | - Fernanda Santos Farnese
- Programa de Pós-Graduação em Biodiversidade e Conservação, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (T.A.V.); (S.C.V.F.); (L.L.L.); (F.S.F.)
| | - Marco Aurélio Batista
- Programa de Pós-Graduação em Recursos Naturais do Cerrado, Universidade Estadual de Goiás, BR-153, Km 99, Qd. Área, Km 99, Campus Bairro São João, Anápolis 75132-903, GO, Brazil;
| | - Luciana Cristina Vitorino
- Programa de Pós-Graduação em Biodiversidade e Conservação, Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano, Campus Rio Verde), Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde 75901-970, GO, Brazil; (T.A.V.); (S.C.V.F.); (L.L.L.); (F.S.F.)
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