title: Development of cyanide-resistant respiration in mitochondria from potato tubers treated with ethanol, acetaldehyde, and acetic acid.
abstract: Treatment of intact potato (Solanum tuberosum L.) tubers with acetaldehyde, ethanol or acetic-acid vapors led to a respiratory upsurge which was further increased when the volatiles were applied in 100% O2. Mitochondria from tubers held in 100% O2 (O2 control) displayed a substrate state, state 3, and state 4 in respiration, whereas in mitochondria from the volatile-treated tubers the respiratory rate of the different states was virtually indistinguishable. This respiratory pattern was companied by the development of a cyanide-resistant respiration since these mitochondria exhibited resistance to CN and sensitivity to CN+salicylhydroxamic acid. Acetaldehyde-treated potatoes showed a time-course development (up to 36 h) of cyanide resistance and concomitant sensitivity to salicylhydroxamic acid, indicating the onset of synthetic processes leading to the observed changes in mitochondrial respiration.
authors.affiliation: Department of Horticulture and Forestry, Rutgers University, 08903, New Brunswick, NJ, USA.
authors.forename: H W
authors.initials: HW
authors.lastname: Janes
authors.forename: A
authors.initials: A
authors.lastname: Rychter
authors.forename: C
authors.initials: C
authors.lastname: Frenkél