THE PHOTOCHEMICAL REACTION IN PHOTOSYNTHESIS
نویسندگان
چکیده
منابع مشابه
The Photochemical Reaction in Photosynthesis
Measurements of photosynthesis were made in continuous and flashing light of high intensity, using cells varying in chlorophyll content. The amount of chlorophyll present per molecule of carbon dioxide reduced per single flash of light was found to be about 2480 molecules. The length of time required for one unit in the photosynthetic mechanism to complete the cycle of photochemical and Blackma...
متن کاملPicosecond detection of an intermediate in the photochemical reaction of bacterial photosynthesis.
Preparations of photosynthetic reaction centers from Rhodopseudomonas sphaeroides were excited with flashes lasting approximately 8 psec. Immediately after the excitation, there appeared a transient state which was characterized by new absorption bands near 500 and 680 nm, by a bleaching of bands near 540, 600, 760, and 870 nm, and by a blue shift of a band near 800 nm. The transient state deca...
متن کاملIs PsbS the site of non-photochemical quenching in photosynthesis?
The PsbS protein of photosystem II functions in the regulation of photosynthetic light harvesting. Along with a low thylakoid lumen pH and the presence of de-epoxidized xanthophylls, PsbS is necessary for photoprotective thermal dissipation (qE) of excess absorbed light energy in plants, measured as non-photochemical quenching of chlorophyll fluorescence. What is known about PsbS in relation to...
متن کاملAnoxygenic Photosynthesis —A Photochemical Reaction That Does Not Contribute to Oxygen Reproduction—
Plants, algae, and cyanobacteria perform photosynthesis with the resultant production of oxygen, which supports all organisms that consume it through their respiration. This type of photosynthesis is an indispensable part of the global oxygen flux. However, another type of photochemical reaction , photosynthesis without oxygen production, exists, and has been designated anoxygenic photosynthesi...
متن کاملNature of the Blackman Reaction in Photosynthesis.
Among those writing on the mechanism of photosynthesis, which include WARBURG (7), WILLSTATTER (9), and FRANCK (3), the opinion is widely held that the Blackman reaction, which limits the rate of assimilation at high light intensities and carbon dioxide concentrations, involves the decomposition of a peroxide, formed in a preceding photochemical reaction, by the enzyme catalase. The best experi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1932
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.16.2.191