Results 251 to 260 of about 64,640 (280)
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Biochimica et Biophysica Acta, 1956
A method is described for simultaneously recording carbon dioxide and oxygen concentrations in suspensions of algae. This method has been applied to the study of transitory rates of gas exchange in Chlorella suspensions during intermittent illumination. A correlation was observed between high initial rates of oxygen evolution and partially anaerobic
Spruit, C.J.P., Kok, B.
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A method is described for simultaneously recording carbon dioxide and oxygen concentrations in suspensions of algae. This method has been applied to the study of transitory rates of gas exchange in Chlorella suspensions during intermittent illumination. A correlation was observed between high initial rates of oxygen evolution and partially anaerobic
Spruit, C.J.P., Kok, B.
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Changes in the capacity of algae to fluoresce during steady-state photosynthesis
Biochimica et Biophysica Acta (BBA) - Biophysics including Photosynthesis, 1966Abstract A suspension of Chlorella was illuminated long enough for the induction period to be complete and thus for stead-state photosynthesis to be achieved. Then the exciting light was chopped by a slotter about 4 times per sec and the capacity of the algae to fluoresce was followed by means of a low-intensity measuring beam during the dark period.
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The size of the lumenal proton pool in leaves during induction and steady-state photosynthesis
Photosynthesis Research, 2011This report describes a new method to measure the chloroplastic lumenal proton pool in leaves (tobacco and sunflower). The method is based on measurement of CO(2) outbursts from leaves caused by the shift in the CO(2) + H(2)O ↔ HCO(3)(-) + H(+) equilibrium in the chloroplast stroma as protons return from the lumen after darkening.
Vello, Oja +2 more
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Unifying model for the photoinactivation of Photosystem II in vivo under steady-state photosynthesis
Photosynthesis Research, 1998We present a unifying mechanism for photoinhibition based on current obsevations from in vivo studies rather than from in vitro studies with isolated thylakoids or PS II membranes. In vitro studies have limited relevance for in vivo photoinhibition because very high light is used with photon exposures rarely encountered in nature, and most of the ...
Jan M. Anderson +2 more
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Australian Journal of Plant Physiology, 1989
A mathematical framework was developed to analyse rate limitation of non-steady-state photosynthesis following an increase in photon flux density (PFD). This analysis was employed to resolve an exponential phase of the photosynthetic response of Spinacia oleracea L. to a step increase from darkness to moderate PFD.
IE Woodrow, KA Mott
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A mathematical framework was developed to analyse rate limitation of non-steady-state photosynthesis following an increase in photon flux density (PFD). This analysis was employed to resolve an exponential phase of the photosynthetic response of Spinacia oleracea L. to a step increase from darkness to moderate PFD.
IE Woodrow, KA Mott
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Plant, Cell & Environment, 2006
ABSTRACTPlants are much more dynamic than we usually expect them to be. This dynamic behaviour is of paramount importance for their performance under natural conditions, when resources are distributed heterogeneously in space and time. However, plants are not only the cue ball of their physical and chemical environment.
U, Schurr, A, Walter, U, Rascher
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ABSTRACTPlants are much more dynamic than we usually expect them to be. This dynamic behaviour is of paramount importance for their performance under natural conditions, when resources are distributed heterogeneously in space and time. However, plants are not only the cue ball of their physical and chemical environment.
U, Schurr, A, Walter, U, Rascher
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Photosynthesis Research, 2005
Cultures of the obligate psychrophilic diatom Fragilariopsis cylindrus (Grunow) were grown for 4 months under steady-state conditions at -1 degrees C and +7 degrees C (50 micromol photons m(-2) s(-1)) prior to measurements in order to investigate long-term acclimation of photosynthesis to both temperatures.
Mock, Thomas, Hoch, Nikolai
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Cultures of the obligate psychrophilic diatom Fragilariopsis cylindrus (Grunow) were grown for 4 months under steady-state conditions at -1 degrees C and +7 degrees C (50 micromol photons m(-2) s(-1)) prior to measurements in order to investigate long-term acclimation of photosynthesis to both temperatures.
Mock, Thomas, Hoch, Nikolai
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Journal of Plant Biochemistry and Biotechnology, 1996
Existence of diurnal fluctuations at steady-state transcript level has been found for chloroplast-encoded genes psbA, psaA and rbcL in rice. Transcript levels are low in the morning, high in the noon and show a decline In the evening. The rhythm shows dampening with advancing age.
M. Grover, S. C. Maheshwari, A. K. Tyagi
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Existence of diurnal fluctuations at steady-state transcript level has been found for chloroplast-encoded genes psbA, psaA and rbcL in rice. Transcript levels are low in the morning, high in the noon and show a decline In the evening. The rhythm shows dampening with advancing age.
M. Grover, S. C. Maheshwari, A. K. Tyagi
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The requirements for a steady state in the C3 reductive pentose phosphate pathway of photosynthesis
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1985Abstract A simplified model of the C 3 reductive pentose phosphate pathway of photosynthesis is analysed and the steady-state equations describing the system are solved. The solutions show that certain restrictions are placed upon the magnitude of the apparent kinetic parameters of the enzymes involved in starch synthesis, export of triose phosphate
Ian E. Woodrow +3 more
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Canadian Journal of Botany, 1996
Export and distribution of 14C assimilates during a period of steady-state photosynthesis were studied in attached leaflets of the second trifoliate of Phaseolus vulgaris for 2 weeks following inoculation with Xanthomonas campestris pv. phaseoli. The control was the leaflet opposite the inoculated leaflet at the same node.
Jirong Jiao +2 more
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Export and distribution of 14C assimilates during a period of steady-state photosynthesis were studied in attached leaflets of the second trifoliate of Phaseolus vulgaris for 2 weeks following inoculation with Xanthomonas campestris pv. phaseoli. The control was the leaflet opposite the inoculated leaflet at the same node.
Jirong Jiao +2 more
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