94 research outputs found
Temperature response of photosynthesis and its interaction with light intensity in sweet orange leaf discs under non-photorespiratory condition
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A developmental study of Glycine max cell and protoplast isolation in relation to leaf age and photosynthetic competence
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Photosynthetic electron transport and establishment of an associated trans-thylakoid proton electrochemical gradient during development of the wheat leaf.
No full textFluorescent staining of chromosomes and nuclear structures in living LM- and HeLa-cells with new acridine dyes
No full textSalt relations of Dunaliella. Transitional changes in glycerol content and oxygen exchange reactions on water stress
No full textThermostabilities of cell-membrane and photosynthesis in cabbage cultivars differing in heat tolerance
No full textMeasurement of O<sub>2</sub> uptake and evolution in leaves in vivo using stable isotopes and membrane inlet mass spectrometry
No full textOxygen is both product and substrate of photosynthesis and metabolism in plants, by oxygen evolution through water splitting and uptake by photorespiration and respiration. It is important to investigate these processes simultaneously in leaves, especially in response to environmental variables, such as light and temperature. To distinguish between processes that evolve or take up O2 in leaves in the light, in vivo gas exchange of stable isotopes of oxygen and membrane inlet mass spectrometry is used. A closed-cuvette system for gas exchange of leaf disks is described, using the stable isotopes 16O2 and 18O2, with a semipermeable membrane gas inlet and isotope mass separation and detection by mass spectrometry. Measurement of evolution and uptake, as well as CO2 uptake, at a range of light levels allows composition of a light–response curve, here described for French bean and maize leaf disks.</p
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