Metabolic fractionation of C13 & C12 in plants
نویسندگان
چکیده
منابع مشابه
Measurement of isotope shifts in C12 and C13 glyoxal absorption at visible wavelengths, and first application to DOAS retrievals
Glyoxal (CHOCHO) is an atmospheric trace gas produced by the radical-initiated oxidation of hydrocarbons. High resolution measurements of the glyoxal absorption spectrum in the visible wavelength range are needed as reference spectra to calibrate optical spectroscopic measurements of this gas. The UV-vis absorption spectra of C13-disubstituted glyoxal and ambient (C12) glyoxal were collected at...
متن کاملEnhancement of Palmarumycin C12 and C13 Production by the Endophytic Fungus Berkleasmium sp. Dzf12 in an Aqueous-Organic Solvent System.
The endophytic fungus Berkleasmium sp. Dzf12, isolated from Dioscorea zingiberensis, was found to produce palmarumycins C12 and C13 which possess a great variety of biological activities. Seven biocompatible water-immiscible organic solvents including n-dodecane, n-hexadecane, 1-hexadecene, liquid paraffin, dibutyl phthalate, butyl oleate and oleic acid were evaluated to improve palmarumycins C...
متن کاملTemperature Dependence of Carbon Isotope Fractionation in CAM Plants.
The carbon isotope fractionation associated with nocturnal malic acid synthesis in Kalanchoë daigremontiana and Bryophyllum tubiflorum was calculated from the isotopic composition of carbon-4 of malic acid, after appropriate corrections. In the lowest temperature treatment (17 degrees C nights, 23 degrees C days), the isotope fractionation for both plants is -4 per thousand (that is, malate is ...
متن کاملShort-term measurement of carbon isotope fractionation in plants.
Combustion-based studies of the carbon-13 content of plants give only an integrated, long-term value for the isotope fractionation associated with photosynthesis. A method is described here which permits determination of this isotope fractionation in 2 to 3 hours. To accomplish this, the plant is enclosed in a glass chamber, and the quantity and isotopic content of the CO(2) remaining in the at...
متن کاملEnhancement of palmarumycin C12 and C13 production in liquid culture of the endophytic fungus Berkleasmium sp. Dzf12 by oligosaccharides from its host plant Dioscorea zingiberensis.
Three crude oligosaccharides were respectively prepared by acid hydrolysis of three polysaccharides, which were water-extracted polysaccharide (WEP), sodium hydroxide-extracted polysaccharide (SEP) and acid-extracted polysaccharide (AEP) from the rhizomes of Dioscorea zingiberensis. Among the three oligosaccharides, the crude oligosaccharide prepared by acid hydrolysis of WEP was found to be th...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1961
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.36.2.133