000			02997nab a2200325 i 4500
003			BR-BrBNA
005			20230925142144.0
008			230731b2020 bl.ar|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aH60 _b0336
072			_aP35
100			_aBenedetti, L.
100			_aScherner, A.
100			_aCuchiara, C.C.
100			_aMoraes, I.L.
100			_aAvila, L.A.
100			_aDeuner, S.
245			_aSoybean plant osmotic and oxidative stress as affected by herbicide and salinity levels in soil
500			_aPublicação on-line; 37 ref.; 6 illus.; Summary (En)
520			_a ABSTRACT Background: Soybean cultivation has been an option used to diversify the production system and perform herbicide rotation in irrigated rice crops in the lowland soils of the Rio Grande do Sul State, southern Brazil. However, elevated salinity levels have been detected in these soils that can inhibit plant growth due to the reduction of the osmotic potential of the soil solution and can causes toxicity. The combination of stress factors in the plantation areas can intensify deleterious effects, such as changes in salinity associated with herbicides that trigger oxidative stress in crops. Objective: This study aimed to evaluate osmotic potential, cell damage, and enzyme activities of the antioxidant metabolism on soybean after treatment with herbicides and salinity stress conditions. Methods: For this purpose, completely randomized design was used in a factorial scheme with three replicates. The A factor included four herbicide treatments, as follows: control (no herbicide), sulfentrazone, Smetolachlor, and sulfentrazone + S-metolachlor. The B factor was represented by the following three salinity levels: 0 (control), 60, and 120 mM NaCl, which were applied 24 hours after soybean sowing. Results: The results showed a significant alteration in the osmotic potential of soybean plants, mainly at higher salt concentrations. Although an increase in the lipid peroxidation has been detected in some treatments, antioxidant enzyme action combined with osmotic adjustment to reduce oxidative damage were mechanisms found to be employed by plants to reduce hydrogen peroxide levels. Conclusions: We concluded that herbicide treatment, in combination with saline stress, can alter physiological and biochemical processes of soybean plants Keywords: Glycine max sulfentrazone S-metolachlor antioxidant enzymes saline stress cellular damage.
650			_aGLYCINE MAX
650			_aSOJA
650			_aENZIMA
650			_aSALINIDADE
650			_aHERBICIDA
773	0		_0886 _91817 _dLondrina-PR : Sociedade Brasileira da Ciência das Plantas Daninhas, 1978 _o2023-031024 _tPlanta Daninha (Brazil) _x0100-8358; 1806-9681 (on-line) _gv. 38 p. 1-7; (2020) _wBR2023000824
856			_uhttps://www.scielo.br/j/pd/a/P65PxLKHLR8F4DPzRHgCDxv/?format=pdf&lang=en
942			_cAnalítica
999			_c9710 _d9710