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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1111/nph.18178
|2 doi
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|a pubmed25n1133.xml
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|a (DE-627)NLM340070609
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|a (NLM)35478172
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Sun, Wu
|e verfasserin
|4 aut
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| 245 |
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|a Leaf relative uptake of carbonyl sulfide to CO2 seen through the lens of stomatal conductance-photosynthesis coupling
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 03.08.2022
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|a Date Revised 24.08.2022
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|a published: Print-Electronic
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|a CommentIn: New Phytol. 2022 Sep;235(5):1686-1688. doi: 10.1111/nph.18337. - PMID 35867578
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|a Citation Status MEDLINE
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| 520 |
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|a © 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.
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|a Carbonyl sulfide (COS) has emerged as a multi-scale tracer for terrestrial photosynthesis. To infer ecosystem-scale photosynthesis from COS fluxes often requires knowledge of leaf relative uptake (LRU), the concentration-normalized ratio between leaf COS uptake and photosynthesis. However, current mechanistic understanding of LRU variability remains inadequate for deriving robust COS-based estimates of photosynthesis. We derive a set of closed-form equations to describe LRU responses to light, humidity and CO2 based on the Ball-Berry stomatal conductance model and the biochemical model of photosynthesis. This framework reproduces observed LRU responses: decreasing LRU with increasing light or decreasing humidity; it also predicts that LRU increases with ambient CO2 . By fitting the LRU equations to flux measurements on a C3 reed (Typha latifolia), we obtain physiological parameters that control LRU variability, including an estimate of the Ball-Berry slope of 7.1 without using transpiration measurements. Sensitivity tests reveal that LRU is more sensitive to photosynthetic capacity than to the Ball-Berry slope, indicating stomatal response to photosynthesis. This study presents a simple framework for interpreting observed LRU variability and upscaling LRU. The stoma-regulated LRU response to CO2 suggests that COS may offer a unique window into long-term stomatal acclimation to elevated CO2
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|a Journal Article
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| 650 |
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|a Research Support, Non-U.S. Gov't
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| 650 |
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 650 |
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4 |
|a Typha latifolia (broadleaf cattail)
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| 650 |
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4 |
|a carbonyl sulfide (COS or OCS)
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| 650 |
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|a leaf COS : CO2 relative uptake (LRU)
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| 650 |
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|a leaf carbonyl sulfide uptake
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| 650 |
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|a leaf-to-canopy upscaling
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| 650 |
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4 |
|a stomatal conductance
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| 650 |
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4 |
|a stomatal conductance-photosynthesis coupling
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| 650 |
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|a Sulfur Oxides
|2 NLM
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| 650 |
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|a Carbon Dioxide
|2 NLM
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| 650 |
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7 |
|a 142M471B3J
|2 NLM
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| 650 |
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7 |
|a carbonyl sulfide
|2 NLM
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| 650 |
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7 |
|a 871UI0ET21
|2 NLM
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| 700 |
1 |
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|a Berry, Joseph A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yakir, Dan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Seibt, Ulli
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 235(2022), 5 vom: 27. Sept., Seite 1729-1742
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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| 773 |
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|g volume:235
|g year:2022
|g number:5
|g day:27
|g month:09
|g pages:1729-1742
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| 856 |
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|u http://dx.doi.org/10.1111/nph.18178
|3 Volltext
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