carbon fixation

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carbon fixation

The reduction of CO2 to organic compounds by living organisms—classically equated to photosynthesis, which requires sunlight and H2O as an electron donor, converting inorganic carbon (CO2) into organic compounds.
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References in periodicals archive ?
where A is rate of carbon assimilation ([micro]mol C[O.sub.2]/[m.sup.2]s), [R.sub.dark] is the dark respiration rate ([micro]molC[O.sub.2]/[m.sup.2]s), [Q.sub.app] is apparent quantum yield (mol/mol), I is the applied photosynthetic photon flux density ([micro]mol/[m.sup.2]s), [A.sub.max] is the maximum assimilation rate ([micro]mol C[O.sub.2]/[m.sup.2]s) and [theta] describes the curvature.
No statistically significant difference was observed in CO2 compensation point (CCP), day respiration (Rd), and maximum net photosynthetic rate (Amax) between the two biotypes at ambient CO2 (Table 2), indicating that the two biotypes had the same capacity of carbon assimilation. Elevated CO2 caused a significant decrease in Amax (Pless than 0.5) in the R biotype, but the change was inconsistent with CE (Table 2).
Since the increase of [P.sub.max] and decrease of [I.sub.comp] both are good indicators of increased carbon assimilation capacity of plants [18, 30], the significantly increased [P.sub.max] values and decreased [I.sub.comp] values obtained from the regression analysis of NEE-PAR relationship at our two mangrove sites indicated that the carbon assimilation capacity of mangrove forests was increased by spring tides in comparison with neap tides.
Photosynthetic carbon assimilation and associated metabolism in relation to water deficits in higher plants.
Malate synthase, GLcB, initially was characterized as an important enzyme of the glyoxylate shunt involved in carbon assimilation as energy source to bacilli [6].
But more importantly, it has the potential to leave more carbon dioxide, ranked as the first strongest greenhouse gas, in the atmosphere by decreasing carbon assimilation in trees.
A separate measure of total carbon assimilation per each class was not made for this study because total carbon abundance was too high for the mass spectrometer to measure.
Louis, MO) has patented nucleic acid sequences from plant cells, in particular, nucleic acid sequences from maize and soybean associated with the carbon assimilation pathway enzymes.
We hypothesized that carbon assimilation and allocation will be affected by flooding regimes, with a general shift toward reduction in belowground:aboveground ratios of production.
Carbon assimilation tests were performed on 112 random isolates using a simplified panel of carbon sources (histamine, histidine, citrate, malonate, trans-aconitate, phenylalanine, DL-4 aminobutyrate) (2).
This indicates that stomatal control of WUE predominates over that by carbon assimilation capacity among the rice genotypes examined in this study.