Data/hora: 09/06/2024 17:45:27

Biblioteca(s): | Embrapa Soja.
Data corrente: | 08/07/1992
Data da última atualização: | 08/07/1992
Autoria: | GIANINAZZI, S.; GIANINAZZI-PEARSON, V.; DEXHEIMER, J.
Título: | Enzymatic studies on the metabolism of vesicular-arbuscular mycorrhiza. III. Ultrastructural localization of acid and alkaline phosphatase in onion roots infected by Glomus mosseae (Nicol. & Gerd.).
Ano de publicação: | 1979
Fonte/Imprenta: | New Phytologist, v.82, p.127-132, 1979.
Idioma: | Inglês
Conteúdo: | The structural distribution of acid and alkaline phosphatase in 6-week-old onion roots infected by Glomus mosseae has been investigated cytochemically. Significant acid phosphatase activity was only observed in the vacuolated, immature terminal arbuscule branches of the mycorrhizal whilst strong alkaline a-naphthyl phosphatase and b-glycerophosphatase activities were localized within the vacuoles of the mature arbuscular and intercellular hyphae. In the host cells neither acid nor alkaline phosphatase distribution was modified with vesicular-arbuscular mycorrhiza formation. These results are discussed in relation to previosly reported mycorrhiza-specific alkaline phosphatase (Gianinazzi-Pearson and Gianinazzi, 1976, 1978) and the metabolism of phosphorus in vesicular-arbuscular mycorrhizal systems.
Palavras-Chave: | Fungus; Mycorrhiza.
Thesagro: | Fungo; Glomus Mosseae; Micorriza.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (13730-1) - ADD - SP - -- - 9591 -  - 9591 - DIS