Spinach Leaf Chloroplast CO2 and NO2− Photoassimilations Do Not Compete for Photogenerated Reductant
نویسندگان
چکیده
منابع مشابه
Isolation and characterization of the cytosolic and chloroplast forms of spinach leaf fructose diphosphate aldolase.
Two different isoenzymes of fructose-P2 aldolase can be resolved by chromatography of crude spinach leaf extracts on DEAE-cellulose columns. The acidic isoenzyme comprises about 85% of the total leaf aldolase activity. The two forms differ in primary structure as judged by their distinctive amino acid compositions, tryptic peptide patterns, and immunological properties. Only the acidic isoenzym...
متن کاملCarbon dioxide and nitrite photoassimilatory processes do not intercompete for reducing equivalents in spinach and soybean leaf chloroplasts.
Previously, C Baysdorfer and JM Robinson (1985 Plant Physiol 77: 318-320) demonstrated that, in a reconstituted spinach chloroplast system, NADP photoreduction functioning at most maximal rate and reductant demand, was the successful competitor with NO(2) (-) photoreduction for reduced ferredoxin. This resulted in a repression of NO(2) (-) reduction until all NADP available had been almost tota...
متن کاملChloroplast replication and chloroplast DNA synthesis in spinach leaves
Cultured leaf disks from young spinach leaves have been used to study chloroplast DNA synthesis in relation to chloroplast growth and repli cation. Autoradiographs prepared from thin sections show th a t labelling throughout disks is uniform. We consider th a t cultured leaf disks serve as a model system for studies of cell expansion and chloroplast replication during the development of spinac...
متن کاملChloroplast replication and chloroplast DNA synthesis in spinach leaves
Cultured leaf disks from young spinach leaves have been used to study chloroplast DNA synthesis in relation to chloroplast growth and repli cation. Autoradiographs prepared from thin sections show th a t labelling throughout disks is uniform. We consider th a t cultured leaf disks serve as a model system for studies of cell expansion and chloroplast replication during the development of spinac...
متن کاملUncouplers of Spinach Chloroplast Photosynthetic
tion at pH 5.5 resulted in preferential destruction of IC photoreduction ability. 4. Addition of zinc ion preferentially inhibited the photooxidation of ascorbic acid. 5. Treatment of chloroplasts with digitonin resulted in a drastic loss of ability to catalyze the Hill reaction and IC photoreduction, yet yielded a preparation which was over 6 times as active in terms of ascorbic acid photooxid...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1988
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.88.4.1373