Endogenous polyamine content and metabolism in the ectomycorrhizal fungus Paxillus involutus

Endogenous polyamine content of the ectomycorrhizal fungus Paxillus involutus, as well as the activity of its biosynthetic enzymes in relation to mycelia ageing were investigated in this work. Polyamines in free, PCA-soluble and insoluble conjugated forms, are present in Paxillus involutus mycelia i...

Description complète

Détails bibliographiques
Publié dans:The New phytologist. - 1984. - 143(1999), 3 vom: 18. Sept., Seite 581-587
Auteur principal: Fornalé, Silvia (Auteur)
Autres auteurs: Sarjala, Tytti, Bagni, Nello
Format: Article en ligne
Langue:English
Publié: 1999
Accès à la collection:The New phytologist
Sujets:Journal Article Paxillus involutus arginine decarboxylase ornithine decarboxylase polyamine release polyamine uptake polyamines
Description
Résumé:Endogenous polyamine content of the ectomycorrhizal fungus Paxillus involutus, as well as the activity of its biosynthetic enzymes in relation to mycelia ageing were investigated in this work. Polyamines in free, PCA-soluble and insoluble conjugated forms, are present in Paxillus involutus mycelia in relatively high amounts and the ratio of putrescine to spermidine is age-dependent. Both arginine- and ornithine-decarboxylases are present, but putrescine biosynthesis proceeds mostly via ornithine decarboxylase and decreases with the age of mycelia. There was a large release of free polyamines from mycelia which showed age-dependent features. Clear polyamine uptake was observed in 2-wk-old mycelia and no competition between putrescine and cadaverine was detected. Putrescine uptake seems to reduce ornithine decarboxylase activity, but does not affect arginine decarboxylase
Description:Date Revised 19.04.2021
published: Print
Citation Status PubMed-not-MEDLINE
ISSN:1469-8137
DOI:10.1046/j.1469-8137.1999.00480.x