@article{dubois_fiscus_booker_flowers_reid_2007, title={Optimizing the statistical estimation of the parameters of the Farquhar-von Caemmerer-Berry model of photosynthesis}, volume={176}, ISSN={["1469-8137"]}, DOI={10.1111/j.1469-8137.2007.02182.x}, abstractNote={The model of Farquhar, von Caemmerer and Berry is the standard in relating photosynthetic carbon assimilation and concentration of intercellular CO(2). The techniques used in collecting the data from which its parameters are estimated have been the object of extensive optimization, but the statistical aspects of estimation have not received the same attention. The model segments assimilation into three regions, each modeled by a distinct function. Three parameters of the model, namely the maximum rate of Rubisco carboxylation (V(c max)), the rate of electron transport (J), and nonphotorespiratory CO(2) evolution (R(d)), are customarily estimated from gas exchange data through separate fitting of the component functions corresponding to the first two segments. This disjunct approach is problematic in requiring preliminary arbitrary subsetting of data into sets believed to correspond to each region. It is shown how multiple segments can be estimated simultaneously, using the entire data set, without predetermination of transitions by the investigator. Investigation of the number of parameters that can be estimated in the two-segment model suggests that, under some conditions, it is possible to estimate four or even five parameters, but that only V(c max), J, and R(d), have good statistical properties. Practical difficulties and their solutions are reviewed, and software programs are provided.}, number={2}, journal={NEW PHYTOLOGIST}, author={Dubois, Jean-Jacques B. and Fiscus, Edwin L. and Booker, Fitzgerald L. and Flowers, Michael D. and Reid, Chantal D.}, year={2007}, pages={402–414} }
 @article{reid_fiscus_burkey_1999, title={Effects of chronic ozone and elevated atmospheric CO2 concentrations on ribulose-1,5-bisphosphate in soybean (Glycine max)}, volume={106}, ISSN={["1399-3054"]}, DOI={10.1034/j.1399-3054.1999.106404.x}, abstractNote={Ribulose‐1,5‐bisphosphate (RuBP) pool size was determined at regular intervals during the growing season to understand the effects of tropospheric ozone concentrations, elevated atmospheric carbon dioxide concentrations and their interactions on the photosynthetic limitation by RuBP regeneration. Soybean (Glycine max [L.] Merr. cv. Essex) was grown from seed to maturity in open‐top field chambers in charcoal‐filtered air (CF) either without (22 nmol O3 mol−1) or with added O3 (83 nmol mol−1) at ambient (AA, 369 μmol CO2 mol−1) or elevated CO2 (710 μmol mol−1). The RuBP pool size generally declined with plant age in all treatments when expressed on a unit leaf area and in all treatments but CF‐AA when expressed per unit ribulose‐1,5‐bisphosphate carboxylase/oxygenase (Rubisco; EC 4.1.1.39) binding site. Although O3 in ambient CO2 generally reduced the RuBP pool per unit leaf area, it did not change the RuBP pool per unit Rubisco binding site. Elevated CO2, in CF or O3‐fumigated air, generally had no significant effect on RuBP pool size, thus mitigating the negative O3 effect. The RuBP pools were below 2 mol mol−1 binding site in all treatments for most of the season, indicating limiting RuBP regeneration capacity. These low RuBP pools resulted in increased RuBP regeneration via faster RuBP turnover, but only in CF air and during vegetative and flowering stages at elevated CO2. Also, the low RuBP pool sizes did not always reflect RuBP consumption rates or the RuBP regeneration limitation relative to potential carboxylation (%RuBP). Rather, %RuBP increased linearly with decrease in the RuBP pool turnover time. These data suggest that amelioration of damage from O3 by elevated atmospheric CO2 to the RuBP regeneration may be in response to changes in the Rubisco carboxylation.}, number={4}, journal={PHYSIOLOGIA PLANTARUM}, author={Reid, CD and Fiscus, EL and Burkey, KO}, year={1999}, month={Aug}, pages={378–385} }
 @article{reid_fiscus_burkey_1998, title={Combined effects of chronic ozone and elevated CO2 on Rubisco activity and leaf components in soybean (Glycine max)}, volume={49}, ISSN={["1460-2431"]}, DOI={10.1093/jexbot/49.329.1999}, number={329}, journal={JOURNAL OF EXPERIMENTAL BOTANY}, author={Reid, CD and Fiscus, EL and Burkey, KO}, year={1998}, month={Dec}, pages={1999–2011} }
 @article{reid_fiscus_1998, title={Effects of elevated [CO2] and/or ozone on limitations to CO2 assimilation in soybean (Glycine max)}, volume={49}, ISSN={["1460-2431"]}, DOI={10.1093/jexbot/49.322.885}, number={322}, journal={JOURNAL OF EXPERIMENTAL BOTANY}, author={Reid, CD and Fiscus, EL}, year={1998}, month={May}, pages={885–895} }
 @article{reid_tissue_fiscus_strain_1997, title={Comparison of spectrophotometric and radioisotopic methods for the assay of Rubisco in ozone-treated plants}, volume={101}, ISSN={["0031-9317"]}, DOI={10.1034/j.1399-3054.1997.1010221.x}, number={2}, journal={PHYSIOLOGIA PLANTARUM}, author={Reid, CD and Tissue, DT and Fiscus, EL and Strain, BR}, year={1997}, month={Oct}, pages={398–404} }
 @article{fiscus_reid_miller_heagle_1997, title={Elevated CO2 reduces O-3 flux and O-3-induced yield losses in soybeans: Possible implications for elevated CO2 studies}, volume={48}, ISSN={["0022-0957"]}, DOI={10.1093/jxb/48.2.307}, abstractNote={Soybeans were grown for three seasons in open-top field chambers to determine (1) whether elevated CO2 (360 versus 700 //mol mol"1) alleviates some of the yield loss due to pollutant 0 3, (2) whether the partial stomatal closure resulting from chronic 03 exposure (charcoal-filtered air versus 1.5 x ambient concentrations) is a cause or result of decreased photosynthesis, and (3) possible implications of C0 2 /0 3 interactions to climate change studies using elevated CO2. Leaf conductance was reduced by elevated C02, regardless of O3 level, or by exposure to 03 alone. As. a result of these effects on conductance, high C0 2 reduced estimated midday 03 flux into the leaf by an average of 50% in charcoal-filtered air and 35% in the high 03 treatment. However, while exposure to O 3 reduced seed yields by 41% at ambient CO2 levels, the yield reduction was completely ameliorated by elevated CO2. The threshold midday 03 flux for yield loss appears to be 20-30 nmol m~2 s" 1 in this study. Although elevated CO2 increased total biomass production, it did not increase seed yields. A/C, curves show a large reduction in the stomatal limitation to photosynthesis due to elevated CO2, but no effect of O3. These data demonstrate that (1) reduced conductance due to O3 is the result, and not the cause, of reduced photosynthesis, (2) 700 //mol mol"' CO2 can completely ameliorate yield losses due to 03 within the limits of these experiments, and (3) some reports of increased yields under elevated CO2 treatments may, at least in part, reflect the amelioration of unrecognized suppression of yield by 03 or other stresses.}, number={307}, journal={JOURNAL OF EXPERIMENTAL BOTANY}, author={Fiscus, EL and Reid, CD and Miller, JE and Heagle, AS}, year={1997}, month={Feb}, pages={307–313} }
 @article{booker_reid_brunschonharti_fiscus_miller_1997, title={Photosynthesis and photorespiration in soybean [Glycine max (L.) Merr.] chronically exposed to elevated carbon dioxide and ozone}, volume={48}, ISSN={["0022-0957"]}, DOI={10.1093/jexbot/48.315.1843}, number={315}, journal={JOURNAL OF EXPERIMENTAL BOTANY}, author={Booker, FL and Reid, CD and BrunschonHarti, S and Fiscus, EL and Miller, JE}, year={1997}, month={Oct}, pages={1843–1852} }