Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/34318
metadata.artigo.dc.title: Selenium protects rice plants from water deficit stress
metadata.artigo.dc.creator: Andrade, Fabrício Ribeiro
Silva, Geanderson Nascimento da
Guimarães, Karina Carvalho
Barreto, Herlon Bruno Ferreira
Souza, Kamila Rezende Dázio de
Guilherme, Luiz Roberto Guimarães
Faquin, Valdemar
Reis, André Rodrigues dos
metadata.artigo.dc.subject: Agronomic biofortification
Sodium selenate
Food composition
Antioxidant enzymes
Abiotic stress
metadata.artigo.dc.publisher: Elsevier
metadata.artigo.dc.date.issued: Nov-2018
metadata.artigo.dc.identifier.citation: ANDRADE, F. R. et al. Selenium protects rice plants from water deficit stress. Ecotoxicology and Environmental Safety, [S.l.], v. 164, p. 562-570, Nov. 2018.
metadata.artigo.dc.description.abstract: Selenium (Se) is essential to humans and animals due to its antioxidant properties. Although it is not considered an essential nutrient for higher plants. Many studies show that Se in low concentrations (up to 0.5 mg kg−1) provides beneficial effects to non-hyperaccumulating plants by participating in antioxidant defense systems and enhancing tolerance to abiotic stress. Therefore, this study aimed to evaluate the effects of Se application rates on rice plants under different soil water conditions. The experiment was conducted on an Oxisol using four Se rates (0, 0.5, 1.0 and 2.0 mg kg−1) and two soil water conditions (irrigated and water deficit). Selenium application via soil up to 0.5 mg kg−1 increased the plant height, chlorophyll index, sulfur and copper accumulation in shoots, carbon dioxide assimilation, superoxide dismutase (EC 1.15.1.1) activity and decreased the hydrogen peroxide concentration in rice leaves. The accumulation of Se in shoot biomass and Se concentration in seeds increased linearly with the applied rates. Water deficit strongly decreased the plant growth and yield. However, rice plants treated with Se showed higher net photosynthesis, water use efficiency and antioxidant system. This study provides useful information about the roles of Se in protecting rice plants from water deficit stress.
metadata.artigo.dc.identifier.uri: https://www.sciencedirect.com/science/article/pii/S0147651318307528
http://repositorio.ufla.br/jspui/handle/1/34318
metadata.artigo.dc.language: en_US
Appears in Collections:DCS - Artigos publicados em periódicos

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