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- W4306643388 abstract "Abstract The cause of reduced leaf-level transpiration under elevated CO2 remains largely elusive. Here, we assessed stomatal, hydraulic, and morphological adjustments in a long-term experiment on Aleppo pine (Pinus halepensis) seedlings germinated and grown for 22–40 months under elevated (eCO2; c. 860 ppm) or ambient (aCO2; c. 410 ppm) CO2. We assessed if eCO2-triggered reductions in canopy conductance (gc) alter the response to soil or atmospheric drought and are reversible or lasting due to anatomical adjustments by exposing eCO2 seedlings to decreasing [CO2]. To quantify underlying mechanisms, we analyzed leaf abscisic acid (ABA) level, stomatal and leaf morphology, xylem structure, hydraulic efficiency, and hydraulic safety. Effects of eCO2 manifested in a strong reduction in leaf-level gc (−55%) not caused by ABA and not reversible under low CO2 (c. 200 ppm). Stomatal development and size were unchanged, while stomatal density increased (+18%). An increased vein-to-epidermis distance (+65%) suggested a larger leaf resistance to water flow. This was supported by anatomical adjustments of branch xylem having smaller conduits (−8%) and lower conduit lumen fraction (−11%), which resulted in a lower specific conductivity (−19%) and leaf-specific conductivity (−34%). These adaptations to CO2 did not change stomatal sensitivity to soil or atmospheric drought, consistent with similar xylem safety thresholds. In summary, we found reductions of gc under elevated CO2 to be reflected in anatomical adjustments and decreases in hydraulic conductivity. As these water savings were largely annulled by increases in leaf biomass, we do not expect alleviation of drought stress in a high CO2 atmosphere." @default.
- W4306643388 created "2022-10-18" @default.
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- W4306643388 date "2022-10-17" @default.
- W4306643388 modified "2023-09-27" @default.
- W4306643388 title "Anatomical adjustments of the tree hydraulic pathway decrease canopy conductance under long-term elevated CO2" @default.
- W4306643388 cites W1951724000 @default.
- W4306643388 cites W1982350179 @default.
- W4306643388 cites W1987855621 @default.
- W4306643388 cites W2000212150 @default.
- W4306643388 cites W2000607425 @default.
- W4306643388 cites W2006395315 @default.
- W4306643388 cites W2017374111 @default.
- W4306643388 cites W2018043145 @default.
- W4306643388 cites W2019381671 @default.
- W4306643388 cites W2022224360 @default.
- W4306643388 cites W2025483180 @default.
- W4306643388 cites W2025666368 @default.
- W4306643388 cites W2028419992 @default.
- W4306643388 cites W2028616242 @default.
- W4306643388 cites W2029703374 @default.
- W4306643388 cites W2037916079 @default.
- W4306643388 cites W2049144998 @default.
- W4306643388 cites W2054676783 @default.
- W4306643388 cites W2054973614 @default.
- W4306643388 cites W2076932267 @default.
- W4306643388 cites W2090392211 @default.
- W4306643388 cites W2096732509 @default.
- W4306643388 cites W2099540110 @default.
- W4306643388 cites W2101707536 @default.
- W4306643388 cites W2115401941 @default.
- W4306643388 cites W2115464807 @default.
- W4306643388 cites W2116038545 @default.
- W4306643388 cites W2116411802 @default.
- W4306643388 cites W2116522578 @default.
- W4306643388 cites W2118390206 @default.
- W4306643388 cites W2119026703 @default.
- W4306643388 cites W2119243854 @default.
- W4306643388 cites W2120342468 @default.
- W4306643388 cites W2120889498 @default.
- W4306643388 cites W2123863927 @default.
- W4306643388 cites W2123894420 @default.
- W4306643388 cites W2124206596 @default.
- W4306643388 cites W2125610532 @default.
- W4306643388 cites W2129832806 @default.
- W4306643388 cites W2134891082 @default.
- W4306643388 cites W2137335813 @default.
- W4306643388 cites W2144661611 @default.
- W4306643388 cites W2145460613 @default.
- W4306643388 cites W2147639276 @default.
- W4306643388 cites W2148534890 @default.
- W4306643388 cites W2157472357 @default.
- W4306643388 cites W2157912201 @default.
- W4306643388 cites W2159476659 @default.
- W4306643388 cites W2161868151 @default.
- W4306643388 cites W2166771088 @default.
- W4306643388 cites W2168444258 @default.
- W4306643388 cites W2169110569 @default.
- W4306643388 cites W2170860770 @default.
- W4306643388 cites W2171683709 @default.
- W4306643388 cites W2178711053 @default.
- W4306643388 cites W2183712777 @default.
- W4306643388 cites W2328302852 @default.
- W4306643388 cites W2329960882 @default.
- W4306643388 cites W2359292793 @default.
- W4306643388 cites W2395761737 @default.
- W4306643388 cites W2466560771 @default.
- W4306643388 cites W2478947988 @default.
- W4306643388 cites W2535082270 @default.
- W4306643388 cites W2546729042 @default.
- W4306643388 cites W2556285931 @default.
- W4306643388 cites W2767998632 @default.
- W4306643388 cites W2786373059 @default.
- W4306643388 cites W2791993945 @default.
- W4306643388 cites W2795932935 @default.
- W4306643388 cites W2850876416 @default.
- W4306643388 cites W2948554537 @default.
- W4306643388 cites W3005531375 @default.
- W4306643388 cites W3016394488 @default.
- W4306643388 cites W3097134184 @default.
- W4306643388 cites W3123255822 @default.
- W4306643388 cites W3169858067 @default.
- W4306643388 cites W3197069464 @default.
- W4306643388 cites W3197227086 @default.
- W4306643388 cites W3204518084 @default.
- W4306643388 cites W3205435296 @default.
- W4306643388 cites W3205794117 @default.
- W4306643388 doi "https://doi.org/10.1093/plphys/kiac482" @default.
- W4306643388 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36250901" @default.
- W4306643388 hasPublicationYear "2022" @default.
- W4306643388 type Work @default.