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Titolo:
Computer modelling and experimental evidence for two steady states in the photosynthetic Calvin cycle
Autore:
Poolman, MG; Olcer, H; Lloyd, JC; Raines, CA; Fell, DA;
Indirizzi:
Oxford Brookes Univ, Sch Biol & Mol Sci, Oxford OX3 0BP, England Oxford Brookes Univ Oxford England OX3 0BP Sci, Oxford OX3 0BP, England Dumlupinar Univ, Fen Edebiyat Fak, Biyoloji Bolumu, Kutahya, Turkey Dumlupinar Univ Kutahya Turkey at Fak, Biyoloji Bolumu, Kutahya, Turkey Univ Essex, Dept Biol Sci, Colchester CO4 3SQ, Essex, England Univ Essex Colchester Essex England CO4 3SQ ester CO4 3SQ, Essex, England
Titolo Testata:
EUROPEAN JOURNAL OF BIOCHEMISTRY
fascicolo: 10, volume: 268, anno: 2001,
pagine: 2810 - 2816
SICI:
0014-2956(200105)268:10<2810:CMAEEF>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE-OXYGENASE; ISOLATED SPINACH-CHLOROPLASTS; TRANSGENIC TOBACCO PLANTS; FLUX-CONTROL COEFFICIENTS; ANTISENSE RBCS; POTATO PLANTS; PHOSPHATE; GROWTH; STARCH; LIGHT;
Keywords:
photosynthesis; computer modelling; SBPase; bistability; metabolic control analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Poolman, MG Oxford Brookes Univ, Sch Biol & Mol Sci, Oxford OX3 0BP, England Oxford Brookes Univ Oxford England OX3 0BP OX3 0BP, England
Citazione:
M.G. Poolman et al., "Computer modelling and experimental evidence for two steady states in the photosynthetic Calvin cycle", EUR J BIOCH, 268(10), 2001, pp. 2810-2816

Abstract

We present observations of photosynthetic carbon dioxide assimilation, andleaf starch content from genetically modified tobacco (Nicotiana tabacum) plants in which the activity of the Calvin cycle enzyme, sedoheptulose-1,7-bisphosphatase, is reduced by an antisense construct. The measurements weremade on leaves of varying ages and used to calculate the flux control coefficients of sedoheptulose-1,7-bisphosphatase over photosynthetic assimilation and starch synthesis. These calculations suggest that control coefficients for both are negative in young leaves, and positive in mature leaves. This behaviour is compared to control coefficients obtained from a detailed computer model of the Calvin cycle. The comparison demonstrates that the experimental observations are consistent with bistable behaviour exhibited by the model, and provides the first experimental evidence that such behaviourin the Calvin cycle occurs in vivo as well as in silico.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 20:12:44