Hormone Action and Sensitivity: Possible Relation to Aging

Catalase Is Differentially Expressed in Dividing and Nondividing Protoplasts

“…Synthetic auxins stimulate the production of ethylene, the biosynthesis of which is dependent on oxygen and free radicals. Auxins enhance the altemate pathway of mitochondrial respiration and stimulate residual oxygen metabolism, which is attributed to increased lipoxygenase activity (Van der Linde, 1990). The components of the culture medium, especially metal cations and FeEDTA, are known to stimulate free radical production and lipid peroxidation in other systems, and they may also participate in the oxidative stress of protoplasts.…”

Moderation of morphogenetic and oxidative stress responses in flax in vitro cultures by hydroxynonenal and desferrioxamine

“…Damage caused by free radicals may thus be a factor in promoting stress and ageing in plant tissue cultures (Benson, 2000a, b;Van der Linde, 1990). Indirect evidence indicates, that dOH and O 2 dÀ , both highly toxic oxygen species, are produced by dedifferentiated plant cultures (Benson and Withers, 1987).…”

Αντιοξειδωτικα Ενζυμικα Συστηματα Σε Πρωτοπλαστες Απο Μεσοφυλλο Vitis Vinifera L. Και Nicotiana Tabacum L.

“…Synthetic auxins stimulate the production of ethylene, the biosynthesis of which is dependent on oxygen and free radicals. Auxins enhance the alternate pathway of mitochondrial respiration and stimulate residual oxygen metabolism, which is attributed to increased lipoxygenase activity (Van der Linde, 1990). The components of the culture medium, especially metal cations and FeEDTA, are known to stimulate free radical production and lipid peroxidation in other systems, and they may also participate in the oxidative stress«of protoplasts.…”