Decarboxylation of Malate in the Crassulacean Acid Metabolism Plant Bryophyllum (Kalanchoe) fedtschenkoi (Role of NAD-Malic Enzyme)
نویسندگان
چکیده
منابع مشابه
Malate Decarboxylation by Kalanchoë daigremontiana Mitochondria and Its Role in Crassulacean Acid Metabolism.
Mitochondria isolated from Kalanchoë daigremontiana, a Crassulacean acid metabolism plant, decarboxylate added malate to pyruvate at rates of up to 100 micromoles per hour per milligram original chlorophyll in the presence of ADP. Omitting ADP reduces this rate by approximately 50%. Antimycin A inhibits malate decarboxylation and this inhibition could be relieved by addition of aspartate and al...
متن کاملEffects of light quantity and quality on the decarboxylation of malic Acid in crassulacean Acid metabolism photosynthesis.
The rate of malic acid consumption in the Crassulacean acid metabolism (CAM) plant Kalanchoë daigremontiana Hamet et Perrier was found to be more rapid than the rate of photosynthetic oxygen evolution under all levels of irradiation by white light. This accounts for the accumulation of carbon dioxide in CAM tissues in the light.Action spectra of malate consumption and photosynthetic oxygen evol...
متن کاملMalate Dehydrogenase and NAD Malic Enzyme in the Oxidation of Malate by Sweet Potato Mitochondria.
Over a range of concentrations from less than 0.1 mm to more than 70 mm, sweet potato root mitochondria display a bimodal substrate saturation isotherm for malate. The high affinity portion of the isotherm has an apparent Km for malate of 0.85 mm and fits a rectangular hyperbolic function. The low affinity portion of the isotherm is sigmoid in character and gives an apparent S(0.5) of 40.6 mm a...
متن کاملEnzyme Regulation in Crassulacean Acid Metabolism Photosynthesis : Studies on Thioredoxin-Linked Enzymes of KalanchoE daigremontiana.
Fructose-1,6-bisphosphatase (FBPase) and sedoheptulose-1,7-bisphosphatase (SBPase) were identified and purified from the Crassulacean acid metabolism (CAM) plant, Kalanchoë daigremontiana. FBPase and SBPase showed respective molecular weights of 180,000 and 76,000, and exhibited immunological cross-reactivity with their counterparts from chloroplasts of C(3) (spinach) and C(4) (corn) plants. Ba...
متن کاملA malic Acid permease in isolated vacuoles of a crassulacean Acid metabolism plant.
Vacuoles isolated from mesophyll protoplasts of the Crassulacean acid metabolism plant Bryophyllum daigremontianum take up [(14)C]l-malic acid from the medium. The initial rates of uptake show saturation kinetics (apparent K(m) about 1 millimolar). In competition experiments, the uptake rates of l-malic acid are greatly reduced in the presence of a surplus of d-malic and tartronic acid. A numbe...
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: Plant Physiology
سال: 1995
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.109.4.1301