Plant physiology (Bethesda), 1989-03, Vol.89 (3), p.735-739
1989
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Details
- Autor(en) / Beteiligte
- Titel
- Activity ratios of ribulose-1,5-bisphosphate carboxylase accurately reflect carbamylation ratios
- Ist Teil von
- Plant physiology (Bethesda), 1989-03, Vol.89 (3), p.735-739
- Ort / Verlag
- Rockville, MD: American Society of Plant Physiologists
- Erscheinungsjahr
- 1989
- Quelle
- Free E-Journal (出版社公開部分のみ）
- Beschreibungen/Notizen
- Activity ratios and carbamylation ratios of ribulose-1,5-bisphosphate carboxylase (RuBPCase) were determined for leaves of Phaseolus vulgaris and Spinacia oleracea exposed to a variety of partial pressures of CO2 and O2 and photon flux densities (PFD). It was found that activity ratios accurately predicted carbamylation ratios except in extracts from leaves held in low PFD. In particular, it was confirmed that the loss of RuBPCase activity in low partial pressure of O2 and high PFD results from reduced carbamylation. Activity ratios of RuBPCase were lower than carbamylation ratios for Phaseolus leaves sampled in low PFD, presumbaly because of the presence of 2-carboxyarabinitol 1-phosphate. Spinacia leaves sampled in darkness also exhibited lower activity ratios than carbamylation ratios indicating that this species may also have an RuBPCase inhibitor even though carboxyarabinitol 1-phosphate has not been detected in this species in the past
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0032-0889eISSN: 1532-2548DOI: 10.1104/pp.89.3.735Titel-ID: cdi_osti_scitechconnect_5047072
- Format
- –
- Schlagworte
- 551000 - Physiological Systems, ACTIVIDAD ENZIMATICA, ACTIVITE ENZYMATIQUE, ALKALINE EARTH METAL COMPOUNDS, BASIC BIOLOGICAL SCIENCES, Biological and medical sciences, CARBAMATE, CARBAMATES, CARBAMATOS, CARBON COMPOUNDS, CARBON DIOXIDE, CARBON DIOXIDE FIXATION, CARBON OXIDES, CARBON-CARBON LYASES, CARBONIC ACID DERIVATIVES, CARBOXY-LYASES, CARBOXYLATION, CARBOXYLIC ACID SALTS, CHALCOGENIDES, Chemical precipitation, CHEMICAL REACTIONS, Communications, DIOXIDO DE CARBONO, DIOXYDE DE CARBONE, ELEMENTS, ENZYME ACTIVITY, ENZYMES, EXIGENCE DES PLANTES, FEUILLE, FLUX DENSITY, FOOD, Fundamental and applied biological sciences. Psychology, HOJAS, LEAVES, LEGUMINOSAE, LIASAS, Liquids, LYASE, LYASES, MAGNESIUM COMPOUNDS, MAGNOLIOPHYTA, MAGNOLIOPSIDA, Metabolism, NECESIDADES DE LAS PLANTAS, NONMETALS, ORGANIC COMPOUNDS, ORGANIC NITROGEN COMPOUNDS, OXIDES, OXIGENO, OXYGEN, OXYGEN COMPOUNDS, OXYGENE, PARTIAL PRESSURE, PHASEOLUS, PHASEOLUS VULGARIS, Phosphates, Photosynthesis, Photosynthesis, respiration. Anabolism, catabolism, Plant physiology and development, PLANTS, Ratios, RIBULOSE DIPHOSPHATE CARBOXYLASE, Scintillation, SPINACH, SPINACIA OLERACEA, VEGETABLES