scholarly journals PHOTOSYNTHETIC PHOSPHORYLATION AS ENERGY SOURCE FOR PROTEIN SYNTHESIS AND CARBON DIOXIDE ASSIMILATION BY CHLOROPLASTS

1968 ◽  
Vol 59 (2) ◽  
pp. 606-612 ◽  
Author(s):  
J. M. Ramirez ◽  
F. F. D. Campo ◽  
D. I. Arnon
Keyword(s):  
Carbon Dioxide ◽  
Energy Source ◽  
Protein Synthesis ◽  
Carbon Dioxide Assimilation

scholarly journals HEAVY CARBON AS A TRACER IN HETEROTROPHIC CARBON DIOXIDE ASSIMILATION

1941 ◽  
Vol 139 (1) ◽  
pp. 365-376 ◽  
Author(s):  
H.G. Wood ◽  
C.H. Werkman ◽  
Allan Hemingway ◽  
A.O. Nier
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Assimilation ◽  
Heavy Carbon

Nitrogen Economy and Canopy Carbon Dioxide Assimilation of Tropical Lowland Rice

1990 ◽  
Vol 82 (3) ◽  
pp. 451-459 ◽  
Author(s):  
H. F. Schnier ◽  
M. Dingkuhn ◽  
S. K. De Datta ◽  
K. Mengel ◽  
E. Wijangco ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Lowland Rice ◽  
Carbon Dioxide Assimilation ◽  
Nitrogen Economy ◽  
Tropical Lowland

scholarly journals Protein synthesis in chloroplasts. Characteristics and products of protein synthesis in vitro in etioplasts and developing chloroplasts from pea leaves

1975 ◽  
Vol 146 (3) ◽  
pp. 675-685 ◽  
Author(s):  
S G Siddell ◽  
R J Ellis
Keyword(s):  
Energy Source ◽  
Protein Synthesis ◽  
Large Subunit ◽  
Sodium Dodecyl ◽  
Supernatant Fraction ◽  
Pisum Sativum L ◽  
Fraction I ◽  
Plastid Ribosomes

The function of plastid ribosomes in pea (Pisum sativum L.) was investigated by characterizing the products of protein synthesis in vitro in plastids isolated at different stages during the transition from etioplast to chloroplast. Etioplasts and plastids isolated after 24, 48 and 96h of greening in continuous white light, use added ATP to incorporate labelled amino acids into protein. Plastids isolated from greening leaves can also use light as the source of energy for protein synthesis. The labelled polypeptides synthesized in isolated plastids were analysed by electrophoresis in sodium dodecyl sulphate-ureapolyacrylamide gels. Six polypeptides are synthesized in etioplasts with ATP as energy source. Only one of these polypeptides is present in a 150 000g supernatant fraction. This polypeptide has been identified as the large subunit of Fraction I protein (3-phospho-D-glycerate carboxylyase EC 4.1.1.39) by comparing the tryptic ‘map’ of its L-(35S)methionine-labelled peptides with the tryptic ‘map’ of large subunit peptides from Fraction I labelled with L-(35S)methionine in vivo. The same gel pattern of six polypeptides is seen when plastids isolated from greening leaves are incubated with either added ATP or light as the energy source. However, the rates of synthesis of particular polypeptides are different in plastids isolated at different stages of the etioplast to chloroplast transition. The results support the idea that plastid ribosomes synthesize only a small number of proteins, and that the number and molecular weight of these proteins does not alter during the formation of chloroplasts from etioplasts.

scholarly journals The Effect of NAA and BA on Carbon Dioxide Assimilation by Shoot Leaves of Spur-type `Delicious' and `Empire' Apple Trees

1997 ◽  
Vol 122 (6) ◽  
pp. 837-840 ◽  
Author(s):  
Matej Stopar ◽  
Brent L. Black ◽  
Martin J. Bukovac
Keyword(s):  
Carbon Dioxide ◽  
Acetic Acid ◽  
Gas Exchange ◽  
Malus Domestica ◽  
Assimilation Rate ◽  
Carbon Dioxide Assimilation ◽  
Gas Exchange Parameters ◽  
Apple Trees ◽  
Fruit Thinning ◽  
Exchange Parameters

The effects of NAA, BA, or Accel on CO2 assimilation of shoot leaves of mature bearing Redchief `Delicious' and `Empire' apple (Malus ×domestica Borkh.) trees were evaluated over two seasons. BA at 50 mg·L-1 did not significantly affect any of the gas-exchange parameters measured. NAA (15 mg·L-1) consistently suppressed CO2 assimilation rate (from ≈10% to 24% below that of the control). This suppression was NAA-concentration dependent, continued for >15 days after treatment, and was completely overcome in `Empire', but only partially or not at all in `Delicious' when BA was combined with NAA. These results are discussed in relation to fruit thinning and NAA-induced inhibition of fruit growth in spur-type `Delicious'. Chemical names used: 2-(1-napthyl) acetic acid (NAA); N-(phenyl)-1H-purine-6-amine (BA); BA + gibberellin A (GA)4+7 (Accel).

The response of western juniper (Juniperusoccidentalis) to reductions in above-and below-ground tissue

1991 ◽  
Vol 21 (2) ◽  
pp. 207-216 ◽  
Author(s):  
P. M. Miller ◽  
L. E. Eddleman ◽  
J. M. Miller
Keyword(s):  
Carbon Dioxide ◽  
Water Use ◽  
Lateral Roots ◽  
Nitrogen Concentration ◽  
Carbon Dioxide Assimilation ◽  
Ground Tissue ◽  
Photosynthetic Nitrogen Use Efficiency ◽  
Nitrogen Use ◽  
Below Ground ◽  
Use Efficiency

Plants are balanced systems that integrate processes of carbon fixation and uptake of water and nutrients to optimize resource acquisition. Response of Juniperusoccidentalis Hook. to reductions in above- and below-ground tissue was measured to determine effects on carbon dioxide assimilation, leaf conductance, intercellular carbon dioxide, xylem water potential, foliage nutrient concentration, aboveground growth, water-use efficiency, and potential photosynthetic nitrogen-use efficiencies. Approximately 50% of the old foliage was removed and lateral roots were severed at the canopy edge in early April 1988; physiological processes were measured during three periods in the summer of 1988. Foliage removal increased rates of carbon dioxide assimilation and photosynthetic nitrogen-use efficiency, but neither increased growth nor improved water status or nitrogen concentration of remaining foliage. Cutting lateral roots reduced assimilation, leaf conductance, foliage nitrogen concentration, branchlet elongation, water-use efficiency, and photosynthetic nitrogen-use efficiency. By late August, juvenile and small-adult J. occidentalis in the cut-top treatment had compensated for foliage removal by reestablishing patterns of water-use efficiencies similar to those of control plants, which may indicate that an overall metabolic control was functioning to regulate the balance between carbon dioxide assimilation and water loss. Cutting lateral roots had a more lasting effect on efficiencies; by late August, juveniles and small adults still had significantly lower water-use efficiencies than controls.

Soil Moisture Modulates Carbon Dioxide Assimilation in Soybean (Glycine max)

2021 ◽  
Author(s):  
Louis Hortensius Mwamlima ◽  
Erick Kimutai Cheruiyot ◽  
Josephine Pamela Ouma
Keyword(s):  
Carbon Dioxide ◽  
Soil Moisture ◽  
Glycine Max ◽  
Carbon Dioxide Assimilation

scholarly journals Effects of Bicarbonate on the Respiration and Glycolytic Activity of Boar Spermatozoa

1978 ◽  
Vol 31 (4) ◽  
pp. 385 ◽  
Author(s):  
RN Murdoch ◽  
WD Davis
Keyword(s):  
Carbon Dioxide ◽  
Energy Source ◽  
Oxygen Consumption ◽  
Apparent Effect ◽  
Glycolytic Activity ◽  
Low Levels ◽  
Presence And Absence ◽  
Boar Spermatozoa

The metabolism of washed boar spermatozoa was studied in the presence and absence of low levels of bicarbonate (6 mM) and carbon dioxide (2 %). Bicarbonate stimulated the oxygen consumption of the spermatozoa but had no apparent effect on glycolysis. The stimulatory effect of bicarbonate on respiration depended on the presence of a utilizable exogenous energy source such as glucose, fructose, lactate, or pyruvate and no stimulation occurred when no substrate was added or when acetate was used as substrate. The response of the spermatozoa to bicarbonate also depended on the presence of adequate concentrations of potassium (5 mM) and to a lesser extent magnesium (1 mM).

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