Data/hora: 08/06/2024 18:08:30

Provedor de dados: | Anais da Academia Brasileira de Ciências
País: | Brazil
Título: | Croton argenteus preparation inhibits initial growth, mitochondrial respiration and increase the oxidative stress from Senna occidentalis seedlings
Autores: | RECH,KATLIN S.; SILVA,CRISTIANE B.; KULIK,JULIANA D.; DIAS,JOSIANE F.G.; ZANIN,SANDRA M.W.; KERBER,VITOR A.; OCAMPOS,FERNANDA M.M.; DALARMI,LUCIANE; SANTOS,GEDIR O.; SIMIONATTO,EUCLÉSIO; LIMA,CRISTINA P.; MIGUEL,OBDÚLIO G.; MIGUEL,MARILIS D.
Data: | 2015-06-01
Ano: | 2015
Palavras-chave: | Alelochemicals; Fedegoso; Velame branco; ATP synthesis; Antioxidant defense.
Resumo: | Senna ocidentalis is a weed, native to Brazil, considered to infest crops and plantations, and is responsible for yield losses of several crops, particularly soybean. The aim of this work was to evaluate if theCroton argenteus extract and fractions possess phytotoxic activity on S. ocidentalis. The crude ethanolic extract (CEE) and its hexanic (HF), chloroformic (CLF) and ethyl acetate (EAF) fractions were tested in germination, growth, oxidative stress increase, Adenosine triphosphate, L-malate and succinate synthesis. The crude extract and its fractions slowed down the germination of S. ocidentalis and decreased the final percentage of germination. Oxidative stress was also increased in the seedlings, by an increase of catalase, peroxidase, superoxide dismutase, glutathione reductase and lipid peroxidation; and it became clear that the ethyl acetate fraction was more phytotoxic. The results indicate that the crude extract and fractions of C. argenteus compromise the mitochondrial energy metabolism, by the inhibition of mitochondrial ATP production, with a decrease in the production of L-malate and succinate. The ethyl acetate fraction of C. argenteus showed high activity on germination and growth, and these effects take place by means of mitochondrial metabolism alterations and increase the oxidative stress, leading the seedling death.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200753
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201520140238
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.87 n.2 2015
Fonte: | info:eu-repo/semantics/openAccess