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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/eru443
|2 doi
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|a pubmed25n0811.xml
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|a (DE-627)NLM243556489
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|a (NLM)25399006
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Niinemets, Ülo
|e verfasserin
|4 aut
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|a How light, temperature, and measurement and growth [CO2] interactively control isoprene emission in hybrid aspen
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|c 2015
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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 08.03.2016
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|a Date Revised 29.01.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © The Author 2014. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Plant isoprene emissions have been modelled assuming independent controls by light, temperature and atmospheric [CO2]. However, the isoprene emission rate is ultimately controlled by the pool size of its immediate substrate, dimethylallyl diphosphate (DMADP), and isoprene synthase activity, implying that the environmental controls might interact. In addition, acclimation to growth [CO2] can shift the share of the control by DMADP pool size and isoprene synthase activity, and thereby alter the environmental sensitivity. Environmental controls of isoprene emission were studied in hybrid aspen (Populus tremula × Populus tremuloides) saplings acclimated either to ambient [CO2] of 380 μmol mol(-1) or elevated [CO2] of 780 μmol mol(-1). The data demonstrated strong interactive effects of environmental drivers and growth [CO2] on isoprene emissions. Light enhancement of isoprene emission was the greatest at intermediate temperatures and was greater in elevated-[CO2]-grown plants, indicating greater enhancement of the DMADP supply. The optimum temperature for isoprene emission was higher at lower light, suggesting activation of alternative DMADP sinks at higher light. In addition, [CO2] inhibition of isoprene emission was lost at a higher temperature with particularly strong effects in elevated-[CO2]-grown plants. Nevertheless, DMADP pool size was still predicted to more strongly control isoprene emission at higher temperatures in elevated-[CO2]-grown plants. We argue that interactive environmental controls and acclimation to growth [CO2] should be incorporated in future isoprene emission models at the level of DMADP pool size
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|a Journal Article
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|a CO2 response
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|a dimethylallyl diphosphate
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|a elevated [CO2]
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|a isoprene emission
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|a light sensitivity
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|a temperature optimum
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|a temperature response.
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|a Butadienes
|2 NLM
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|a Hemiterpenes
|2 NLM
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|a Pentanes
|2 NLM
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| 650 |
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|a isoprene
|2 NLM
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| 650 |
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|a 0A62964IBU
|2 NLM
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|a Carbon Dioxide
|2 NLM
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|a 142M471B3J
|2 NLM
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1 |
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|a Sun, Zhihong
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 66(2015), 3 vom: 15. Feb., Seite 841-51
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:66
|g year:2015
|g number:3
|g day:15
|g month:02
|g pages:841-51
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|u http://dx.doi.org/10.1093/jxb/eru443
|3 Volltext
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