Data/hora: 13/06/2024 00:38:09

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 14/01/2002
Data da última atualização: | 14/01/2002
Autoria: | SAGNER, S.; KNEER, R.; WANNER, G.; JEAN-PIERRE, C.; DEUS-NEUMANN, B.; ZENK, M. H.
Título: | Hyperaccumulation, complexation and distribution of nickel in Sebertia acuminata
Ano de publicação: | 1998
Fonte/Imprenta: | Phytochemistry, v.47, n.3, p.339-347, 1998
Idioma: | Inglês
Conteúdo: | The nickel content in different parts of the hyperaccumulating tree sebertia acuminata was analysed by atomic absorption apectroscopy. Nickel was found to be mainly located in laticifers. The total nickel content of a single mature tree was estimated to be 37 kg. by gel filtration and NMR spectroscopy, citric acid was unequivocally identified as counter ion for about 40% of this metal present. Nitrate was assumed to be a further partner  for a complete ionic balance. Phytochelatins were not found to be involved in nickel detoxification in Sebertia. The localization of nickel complexes inside the laticifers was demonstrated by light microscopy as well as by scanning electron microscopy in combination with an EDX systems for the analysis of elements.
Palavras-Chave: | nickel complexation; nickel distribution; nickel hyperacumulation; repellen effect; sibertia acuminata.
Thesagro: | Sapotaceae.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (19372-1) - ADC - SP - -- - 12083 -  - 12083 - DIS