- K van Leyen, RM Duvoisin, H Engelhardt, M Wiedmann. A function for lipoxygenase in programmed
organelle degradation. Nature 395:392–395, 1998.
- WR Belknap, JR Garbarino. The role of ubiquitin in plant senescence and stress responses. Trends Plant Sci
1:331–335, 1996.
- AR Bahrami, JE Gray. Expression of a proteasome alpha-type subunit gene during tobacco development and
senescence. Plant Mol Biol 39:325–333, 1999.
- C-Z Jiang, SR Rodermel, RM Shibles. Photosynthesis, Rubisco activity and amount, and their regulation by
transcription in senescing soybean leaves. Plant Physiol 101:105–112, 1993.
- LW Peterson, GE Kleinkopf, RC Huffaker. Evidence for lack of turnover of RuDP carboxylase in barley
leaves. Plant Physiol 51:1042–1045, 1973.
- T Mae, A Makino, K Ohira. Changes in the amount of ribulose bisphosphate carboxylase synthesized and
degraded during the life span of rice leaf (Oryza sativaL.). Plant Cell Physiol 24:1079–1086, 1983.
- L Peñarrubia, J Moreno. Increased susceptibility of ribulose-1,5-bisphosphate carboxylase/oxygenase to
proteolytic degradation caused by oxidative treatments. Arch Biochem Biophys 281:319–323, 1990.
- C García-Ferris, J Moreno. Redox regulation of enzymatic activity and proteolytic susceptibility of ribulose
1,5-bisphosphate carboxylase/oxygenase from Euglena gracilis. Photosynth Res 35:55–66, 1993.
- J Moreno, RJ Spreitzer. C172S substitution in the chloroplast-ebcoded large subunit affects stability and stress-
induced turnover of ribulose-1,5-bisphosphate carboxylase/oxygenase. J Biol Chem 274:26789–26793,
- J Moreno, L Peñarrubia, C García-Ferris. The machanism of redox regulation of ribulose-1.5-bisphosphate
carboxylase/oxygenase turnover. A hypothesis. Plant Physiol Biochem 33:121–127, 1995.
- RB Ferreira, DD Davies. Conversion of ribulose-1,5-bisphosphate carboxylase to an acidic and catalitically
inactive form by extracts of osmotically stressed Lemna minorfronds. Planta 179:448–455, 1989.
- RA Mehta, TW Fawcett, D Porath, AK Mattoo. Oxidative stress causes rapid membrane translocation and in
vivo degradation of ribulose-1,5-bisphosphate carboxylase/oxygenase. J Biol Chem 267:2810–2816, 1992.
- C García-Ferris, J Moreno. Oxidative modification and breakdown of ribulose 1,5-bisphosphate carboxy-
lase/oxygenase induced in Euglena gracilisby nitrogen starvation. Planta 193:208–215, 1994.
- T Kubawara, Y Hashimoto. Purification of a dithiothreitol-sensitive tetrameric protease from spinach PS II
membranes. Plant Cell Physiol 31:581–589, 1990.
- R Landolt, P Matile. Glyoxisome-like microbodies in senescent spinach leaves. Plant Sci 72:159–164, 1990.
- L De Bellis, M Nishimura. Development of enzymes of the glyoxilate cycle during senescence of pumpkin
cotyledons. Plant Cell Physiol 32:555–562, 1991.
- K Kamachi, T Yamaya, T Hayakawa, T Mae, K Ojima. Changes in cytosolic glutamine synthetase polypep-
tide and its mRNA in a leaf blade of rice plants during natural senescence. Plant Physiol 98:1323–1329,
- K Kamachi, T Yamaya, T Mae, K Ojima. A role for glutamine synthetase in the remobilization of leaf nitrogen
during natural senescence in rice leaves. Plant Physiol 96:411–417, 1991.
- R Vincent, V Fraisier, S Chaillou, MA Limami, E Deleens, B Phillipson, C Douat, JP Boutin, B Hirel. Over-
expression of a soybean gene encoding cytosolic glutamine synthetase in shoots of transgenic Lotus cornicu-
latusL. plants triggers changes in ammonium assimilation and plant development. Planta 201:424–433, 1997.
- I Szamosi, DL Shaner, BK Singh. Identification and characterization of a biodegradative form of threonine
dehydratase in senescing tomato (Lycopersicon esculentum) leaf. Plant Physiol 101:999–1004, 1993.
- JE Thompson, RL Legge, RF Barber. The role of free radicals in senescence and wounding. New Phytol
105:317–344, 1987.
- T Jabs, RA Dietrich, JL Dang. Initiation of runaway cell death in an Arabidopsismutant by extracellular
superoxide. Science 273:1853–1856, 1996.
- EF Elstner. Oxygen activation and oxygen toxicity. Annu Rev Plant Physiol 33:73–96, 1982.
- GI Jenkins, HW Woolhouse. Photosynthetic electron transport during senescence of the primary leaves of
Phaseolus vulgarisL. II. The reactivity of photosystems one and two and a note on the site of reduction of
ferricyanide. J Exp Bot 32:989–997, 1981.
- B Halliwell, JMC Gutteridge. Free Radicals in Biology and Medicine. 3rd ed. Oxford: Clarendon Press, 1999.
- A Kacperska, M Kubacka-Zebalska. Formation of stress ethylene depends both on ACC synthesis and on the
activity of free radical–generating systems. Physiol Plant 77:231–237, 1989.
- H Greppin, C Penel, T Gaspar. Molecular and Physiological Aspects of Plant Peroxidases. Geneva: University
of Geneva, 1986.
- IK Smith, TL Vierheller, CA Thorne. Properties and functions of glutathione reductase in plants. Physiol Plant
77:449–456, 1989.
- C Bowler, M Van Montagu, D Inzé. Superoxide dismutase and stress tolerance. Annu Rev Plant Physiol Plant
Mol Biol 43:83–116, 1992.
- L Guan, J G Scandalios. Characterization of the catalase antioxidant defense gene cat1of maize and its
developmentally regulated expression in transgenic tobacco. Plant J 3:527–536, 1993.
- K Asada. Ascorbate peroxidase—a hydrogen peroxide–scavenging enzyme in plants. Physiol Plant
85:235–241, 1992.
200 PEÑARRUBIA AND MORENO