Uptake and accumulation of putrescine in the lichen Evernia prunastri

Putrescine uptake and accumulation by Evernia prunastri thallus was studied. Putrescine is effectively taken by lichen cells in the mono-protonated form and then accumulated whithout significant enzymatic degradation of diamine. However, the diprotonated form, which is produced at pH 5.0, is trapped...

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Bibliographic Details
Authors: Legaz, María Estrella, Escribano, M. Isabel
Format: article
Status:Published version
Publication Date:1987
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/244055
Online Access:http://hdl.handle.net/10261/244055
Access Level:Open access
Description
Summary:Putrescine uptake and accumulation by Evernia prunastri thallus was studied. Putrescine is effectively taken by lichen cells in the mono-protonated form and then accumulated whithout significant enzymatic degradation of diamine. However, the diprotonated form, which is produced at pH 5.0, is trapped on the cell walls and a high proportion of it can be degraded before uptake by a secretable diamine oxidase, which is produced at acidic pH values.