title: The effects of drought stress on respiration of isolated corn mitochondria.
abstract: Mitochondria were isolated from etiolated corn shoots (Zea mays L.) that were stressed to a measured water potential. The rates of mitochondrial respiration in state III, state IV, and without phosphate or ADP on a milligram protein basis decreased as water stress increased with succinate, malatepyruvate, or reduced nicotinamide adenine dinucleotide as substrates. Coupling (as determined by respiratory control and ADP/O ratios) did not decrease with increasing water stress. At water potentials greater than -35 bars all respiration had ceased.
authors.affiliation: Department of Agronomy, University of Illinois, Urbana, Illinois 61801.
authors.forename: D T
authors.initials: DT
authors.lastname: Bell
authors.forename: D E
authors.initials: DE
authors.lastname: Koeppe
authors.forename: R J
authors.initials: RJ
authors.lastname: Miller