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Mitigating salt stress by conditioning seeds with ultraviolet light (UV-C) in white oats (Avena sativa L.).
Stefanello, Raquel; Puntel, Raissa Tainá; da Silva Garcia, Wagner Jesus; Strazzabosco Dorneles, Lucio.
Afiliação
  • Stefanello R; Department of Biology, Federal University of Santa Maria, Santa Maria, Brazil.
  • Puntel RT; Graduate of Agronomy, Federal University of Santa Maria, Santa Maria, Brazil.
  • da Silva Garcia WJ; Department of Physics, Federal University of Santa Maria, Santa Maria, Brazil.
  • Strazzabosco Dorneles L; Laboratory of Nanostructured Magnetic Materials, Department of Physics, Federal University of Santa Maria, Santa Maria, Brazil.
J Toxicol Environ Health A ; 87(13): 533-540, 2024 Jul 02.
Article em En | MEDLINE | ID: mdl-38660981
ABSTRACT
Seed conditioning with ultraviolet light (UV-C) might (1) improve crop yield and quality, (2) reduce the use of agrochemicals during cultivation, and (3) increase plant survival in high salinity environments. The aim of this study was to examine the effects of UV-C conditioning of white oat seeds at two doses (0.85 and 3.42 kJ m-2) under salinity stress (100 mM NaCl). Seeds were sown on germination paper and kept in a germination chamber at 20°C. Germination and seedling growth parameters were evaluated after 5 and 10 days. Data demonstrated that excess salt reduced germination and initial growth of white oat seedlings. In all the variables analyzed, exposure of seeds to UV-C under salt stress exerted a positive effect compared to non-irradiated control. The attenuating influence of UV-C in germination was greater at 0.85 than at 3.42 kJ m-2. Thus, data indicate that conditioning white oat seeds in UV-C light produced greater tolerance to salt stress. These findings suggest that UV-C conditioning of white oat seeds may be considered as a simple and economical strategy to alleviate salt-induced stress.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Sementes / Raios Ultravioleta / Avena / Germinação Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Sementes / Raios Ultravioleta / Avena / Germinação Idioma: En Ano de publicação: 2024 Tipo de documento: Article