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Titolo:
ADAPTATION OF PEA TO ELEVATED ATMOSPHERIC CO2 - RUBISCO, PHOSPHOENOLPYRUVATE CARBOXYLASE AND CHLOROPLAST PHOSPHATE TRANSLOCATOR AT DIFFERENT LEVELS OF NITROGEN AND PHOSPHORUS-NUTRITION
Autore:
RIVIEREROLLAND H; CONTARD P; BETSCHE T;
Indirizzi:
FED CTR CEREAL POTATO & LIPID RES,POB 1354 D-32703 DETMOLD GERMANY CEA CADARACHE,DEPT PHYSIOL VEGETALE & ECOSYST F-13108 ST PAUL DURANCEFRANCE
Titolo Testata:
Plant, cell and environment
fascicolo: 1, volume: 19, anno: 1996,
pagine: 109 - 117
SICI:
0140-7791(1996)19:1<109:AOPTEA>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRIFOLIUM-SUBTERRANEUM L; SINK REGULATION; CARBON-DIOXIDE; ANTISENSE RBCS; C-3 PLANTS; PHOTOSYNTHESIS; GROWTH; LIGHT; OXYGENASE; CELLS;
Keywords:
ELEVATED CO2; RUBISCO; CHLOROPLAST PHOSPHATE TRANSLOCATOR; PHOSPHOENOLPYRUVATE CARBOXYLASE; CARBON NITROGEN ALLOCATION; NITROGEN PHOSPHATE NUTRITION; PHOTOSYNTHETIC CO2 FIXATION; ACCLIMATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
H. Riviererolland et al., "ADAPTATION OF PEA TO ELEVATED ATMOSPHERIC CO2 - RUBISCO, PHOSPHOENOLPYRUVATE CARBOXYLASE AND CHLOROPLAST PHOSPHATE TRANSLOCATOR AT DIFFERENT LEVELS OF NITROGEN AND PHOSPHORUS-NUTRITION", Plant, cell and environment, 19(1), 1996, pp. 109-117

Abstract

Resource allocation in high CO2 was studied with respect to plant nutrition. Pea (Pisum sativum) was grown in CO2-enriched air (1000 cm(3) m(-3) CO2) during the entire vegetative phase, or grown in ambient air(340 cm(3) m(-3) CO2), with different levels of nitrogen or phosphorus supply. Rubisco specific activity, abundance and small subunit transcript levels were unaltered at high N but declined at reduced N depending upon the degree of N deprivation. It is proposed that (a) a threshold value for the N status occurs in pea above which Rubisco is not down-regulated by high CO2 and (b) a high leaf level of soluble carbohydrates is not a sufficient condition to down-regulate Rubisco in high CO2. Phesphoenolpyruvate (PEP) carboxylase decreased, and chloroplast phosphate (P)-translocator increased, in high CO2. In contrast to Rubisco, down-regulation of PEP carboxylase was alleviated by low N and enhanced by low P. The increase in the P-translocator was little affectedby N but was accentuated by low P. The increase in the P-translocatoris considered to be one way of alleviating low P conditions in the chloroplast and thus re-balancing carbon partitioning between starch andsoluble carbohydrates and amino acids. It is proposed that acclimation of PEP carboxylase and P-translocator reflects adaptation to metabolic perturbations caused by high CO2.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 02:23:09