Data/hora: 10/06/2024 09:02:13

Provedor de dados: | 65
País: | Brazil
Título: | Liming as a means of reducing copper toxicity in black oats
Autores: | Comin,Jucinei José; Ambrosini,Vítor Gabriel; Rosa,Daniel José; Basso,Alex; Loss,Arcângelo; Melo,George Wellington Bastos de; Lovato,Paulo Emílio; Lourenzi,Cledimar Rogério; Ricachenevsky,Felipe Klein; Brunetto,Gustavo.
Data: | 2018-01-01
Ano: | 2018
Palavras-chave: | Heavy metal; Phytotoxicity; Limestone; Rhizosphere.
Resumo: | ABSTRACT:  Soils which are cultivated with grapevines have high available copper (Cu) content, which can be toxic to cover crops cohabiting vineyards, such as black oats. This study aimed to assess the effect of liming in reducing Cu toxicity in black oats grown in sandy soils. Samples of a Typic Hapludalf were collected at 0-20cm, dried and subjected to the addition of Cu (0 to 50Mg kg-1) and limestone (0, 1.5, and 3.0Mg ha-1). The soil was placed in a rhizobox and black oats were grown for 30 days. We assessed root and shoot dry matter production, copper (Cu), calcium (Ca) and magnesium (Mg) contents in the tissues; Cu content in the root symplast and apoplast, as well as Cu, carbon and pH values in the rhizosphere and bulk soil. Liming reduced Cu toxicity in black oats. Cu was preferentially accumulated in the roots, mostly in the apoplast, which may be the result of a plant tolerance mechanism to prevent the transport of Cu to the shoots.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000400252
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20170278
Formato: | text/html
Fonte: | Ciência Rural  v.48 n.4 2018
Fonte: | info:eu-repo/semantics/openAccess