Matches in SemOpenAlex for { <https://semopenalex.org/work/W4328049299> ?p ?o ?g. }
- W4328049299 endingPage "1253" @default.
- W4328049299 startingPage "1234" @default.
- W4328049299 abstract "Abstract Mesophyll conductance to CO2 from the intercellular air space to the CO2–H2O exchange site has been estimated using δ18O measurements (gm18). However, the gm18 estimates are affected by the uncertainties in the δ18O of leaf water where the CO2–H2O exchange takes place and the degree of equilibration between CO2 and H2O. We show that measurements of Δ17O (i.e.Δ17O=δ17O−0.528×δ18O) can provide independent constraints on gm (gmΔ17) and that these gm estimates are less affected by fractionation processes during gas exchange. The gm calculations are applied to combined measurements of δ18O and Δ17O, and gas exchange in two C3 species, sunflower (Helianthus annuus L. cv. ‘sunny’) and ivy (Hedera hibernica L.), and the C4 species maize (Zea mays). The gm18 and gmΔ17 estimates agree within the combined errors (P-value, 0.876). Both approaches are associated with large errors when the isotopic composition in the intercellular air space becomes close to the CO2–H2O exchange site. Although variations in Δ17O are low, it can be measured with much higher precision compared with δ18O. Measuring gmΔ17 has a few advantages compared with gm18: (i) it is less sensitive to uncertainty in the isotopic composition of leaf water at the isotope exchange site and (ii) the relative change in the gm due to an assumed error in the equilibration fraction θeq is lower for gmΔ17 compared with gm18. Thus, using Δ17O can complement and improve the gm estimates in settings where the δ18O of leaf water varies strongly, affecting the δ18O (CO2) difference between the intercellular air space and the CO2–H2O exchange site." @default.
- W4328049299 created "2023-03-22" @default.
- W4328049299 creator A5061944416 @default.
- W4328049299 creator A5070297535 @default.
- W4328049299 creator A5071349296 @default.
- W4328049299 creator A5071923047 @default.
- W4328049299 creator A5089648479 @default.
- W4328049299 date "2023-03-21" @default.
- W4328049299 modified "2023-09-26" @default.
- W4328049299 title "Exploring the potential of Δ17O in CO2 for determining mesophyll conductance" @default.
- W4328049299 cites W13906460 @default.
- W4328049299 cites W1629874813 @default.
- W4328049299 cites W1775234348 @default.
- W4328049299 cites W1953489825 @default.
- W4328049299 cites W1958189697 @default.
- W4328049299 cites W1986509684 @default.
- W4328049299 cites W1986824185 @default.
- W4328049299 cites W2000337743 @default.
- W4328049299 cites W2000901137 @default.
- W4328049299 cites W2011042168 @default.
- W4328049299 cites W2013096897 @default.
- W4328049299 cites W2015459247 @default.
- W4328049299 cites W2016080370 @default.
- W4328049299 cites W2023026659 @default.
- W4328049299 cites W2028815436 @default.
- W4328049299 cites W2032089081 @default.
- W4328049299 cites W2036278044 @default.
- W4328049299 cites W2036477875 @default.
- W4328049299 cites W2042083184 @default.
- W4328049299 cites W2042466364 @default.
- W4328049299 cites W2043211416 @default.
- W4328049299 cites W2043227641 @default.
- W4328049299 cites W2057260631 @default.
- W4328049299 cites W2074641884 @default.
- W4328049299 cites W2086361936 @default.
- W4328049299 cites W2089991605 @default.
- W4328049299 cites W2098488652 @default.
- W4328049299 cites W2099531714 @default.
- W4328049299 cites W2101228230 @default.
- W4328049299 cites W2104220976 @default.
- W4328049299 cites W2105688850 @default.
- W4328049299 cites W2109453823 @default.
- W4328049299 cites W2112607014 @default.
- W4328049299 cites W2118004656 @default.
- W4328049299 cites W2119612204 @default.
- W4328049299 cites W2120777708 @default.
- W4328049299 cites W2120906990 @default.
- W4328049299 cites W2124011928 @default.
- W4328049299 cites W2125972816 @default.
- W4328049299 cites W2128634461 @default.
- W4328049299 cites W2128710934 @default.
- W4328049299 cites W2135440345 @default.
- W4328049299 cites W2136343563 @default.
- W4328049299 cites W2138696096 @default.
- W4328049299 cites W2139164188 @default.
- W4328049299 cites W2139165023 @default.
- W4328049299 cites W2139945357 @default.
- W4328049299 cites W2140528337 @default.
- W4328049299 cites W2141510263 @default.
- W4328049299 cites W2143804637 @default.
- W4328049299 cites W2146456441 @default.
- W4328049299 cites W2149950077 @default.
- W4328049299 cites W2150291323 @default.
- W4328049299 cites W2151628719 @default.
- W4328049299 cites W2155016538 @default.
- W4328049299 cites W2155809773 @default.
- W4328049299 cites W2158890045 @default.
- W4328049299 cites W2160156450 @default.
- W4328049299 cites W2250743841 @default.
- W4328049299 cites W2296837080 @default.
- W4328049299 cites W2297366033 @default.
- W4328049299 cites W2299469823 @default.
- W4328049299 cites W2299680664 @default.
- W4328049299 cites W2312565527 @default.
- W4328049299 cites W2332082993 @default.
- W4328049299 cites W2529286203 @default.
- W4328049299 cites W2552281135 @default.
- W4328049299 cites W2560239095 @default.
- W4328049299 cites W2605743607 @default.
- W4328049299 cites W2756005186 @default.
- W4328049299 cites W2764331510 @default.
- W4328049299 cites W2774673928 @default.
- W4328049299 cites W2792874907 @default.
- W4328049299 cites W2805076011 @default.
- W4328049299 cites W2885697063 @default.
- W4328049299 cites W2888342231 @default.
- W4328049299 cites W2914675619 @default.
- W4328049299 cites W2916313860 @default.
- W4328049299 cites W2944407816 @default.
- W4328049299 cites W2950864565 @default.
- W4328049299 cites W2972351687 @default.
- W4328049299 cites W3001215081 @default.
- W4328049299 cites W3013720927 @default.
- W4328049299 cites W3022166453 @default.
- W4328049299 cites W3097486414 @default.
- W4328049299 cites W3104345125 @default.
- W4328049299 cites W3116930859 @default.
- W4328049299 cites W3131238880 @default.