In order to gain some insight into mitochondria permeability under water stress, intact coupled mitochondria were isolated from water stress adapted potato cells and investigations were made of certain transport processes including the succinatemalate and ADP ATP exchanges, the plant mitochondrial ATP-sensitive potassium channel (PmitoKATP) and the plant uncoupling mitochondrial protein (PUMP). The Vmax values measured for succinatemalate and ADPATP carriers, as photometrically investigated, as well as the same values for the PmitoKATP and the PUMP were found to increase; this suggested that mitochondria adaptation to water stress can cause an increase in the membrane permeability.
Increase of membrane permeability of mitochondria isolated from water stress adapted potato cells
FRATIANNI A;PALLOTTA, Maria Luigia;
2001-01-01
Abstract
In order to gain some insight into mitochondria permeability under water stress, intact coupled mitochondria were isolated from water stress adapted potato cells and investigations were made of certain transport processes including the succinatemalate and ADP ATP exchanges, the plant mitochondrial ATP-sensitive potassium channel (PmitoKATP) and the plant uncoupling mitochondrial protein (PUMP). The Vmax values measured for succinatemalate and ADPATP carriers, as photometrically investigated, as well as the same values for the PmitoKATP and the PUMP were found to increase; this suggested that mitochondria adaptation to water stress can cause an increase in the membrane permeability.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
