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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1111/nph.18077
|2 doi
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|a pubmed24n1126.xml
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|a (NLM)35263440
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|a DE-627
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|e rakwb
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|a eng
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|a Choury, Zineb
|e verfasserin
|4 aut
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|a Tropical rainforest species have larger increases in temperature optima with warming than warm-temperate rainforest trees
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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 20.04.2022
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|a Date Revised 31.07.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.
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|a While trees can acclimate to warming, there is concern that tropical rainforest species may be less able to acclimate because they have adapted to a relatively stable thermal environment. Here we tested whether the physiological adjustments to warming differed among Australian tropical, subtropical and warm-temperate rainforest trees. Photosynthesis and respiration temperature responses were quantified in six Australian rainforest seedlings of tropical, subtropical and warm-temperate climates grown across four growth temperatures in a glasshouse. Temperature-response models were fitted to identify mechanisms underpinning the response to warming. Tropical and subtropical species had higher temperature optima for photosynthesis (ToptA ) than temperate species. There was acclimation of ToptA to warmer growth temperatures. The rate of acclimation (0.35-0.78°C °C-1 ) was higher in tropical and subtropical than in warm-temperate trees and attributed to differences in underlying biochemical parameters, particularly increased temperature optima of Vcmax25 and Jmax25 . The temperature sensitivity of respiration (Q10 ) was 24% lower in tropical and subtropical compared with warm-temperate species. Overall, tropical and subtropical species had a similar capacity to acclimate to changes in growth temperature as warm-temperate species, despite being grown at higher temperatures. Quantifying the physiological acclimation in rainforests can improve accuracy of future climate predictions and assess their potential vulnerability to warming
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a maximum carboxylation rate Vcmax25
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|a maximum electron transport Jmax25
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|a photosynthesis
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|a rainforest
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|a respiration
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|a temperature
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|a Carbon Dioxide
|2 NLM
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|a 142M471B3J
|2 NLM
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| 700 |
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|a Wujeska-Klause, Agnieszka
|e verfasserin
|4 aut
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| 700 |
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|a Bourne, Aimee
|e verfasserin
|4 aut
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| 700 |
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|a Bown, Nikki P
|e verfasserin
|4 aut
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|a Tjoelker, Mark G
|e verfasserin
|4 aut
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|a Medlyn, Belinda E
|e verfasserin
|4 aut
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|a Crous, Kristine Y
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 234(2022), 4 vom: 27. Mai, Seite 1220-1236
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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|g volume:234
|g year:2022
|g number:4
|g day:27
|g month:05
|g pages:1220-1236
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|u http://dx.doi.org/10.1111/nph.18077
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