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Can leaf net photos...
Can leaf net photosynthesis acclimate to rising and more variable temperatures?
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- Vico, Giulia (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtproduktionsekologi,Department of Crop Production Ecology
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Way, Danielle A. (författare)
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- Hurry, Vaughan (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology
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- Manzoni, Stefano (författare)
- Stockholms universitet,Institutionen för naturgeografi,Stockholm University
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(creator_code:org_t)
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- 2019-03-22
- 2019
- Engelska.
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Ingår i: Plant, Cell and Environment. - : Wiley. - 0140-7791 .- 1365-3040. ; 42:6, s. 1913-1928
- Relaterad länk:
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https://zenodo.org/r...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://res.slu.se/i...
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Abstract
Ämnesord
Stäng
- Under future climates, leaf temperature (T-l) will be higher and more variable. This will affect plant carbon (C) balance because photosynthesis and respiration both respond to short-term (subdaily) fluctuations in T-l and acclimate in the longer term (days to months). This study asks the question: To what extent can the potential and speed of photosynthetic acclimation buffer leaf C gain from rising and increasing variable T-l? We quantified how increases in the mean and variability of growth temperature affect leaf performance (mean net CO2 assimilation rates, A(net); its variability; and time under near-optimal photosynthetic conditions), as mediated by thermal acclimation. To this aim, the probability distribution of A(net) was obtained by combining a probabilistic description of short- and long-term changes in T-l with data on A(net) responses to these changes, encompassing 75 genera and 111 species, including both C3 and C4 species. Our results show that (a) expected increases in T-l variability will decrease mean A(net) and increase its variability, whereas the effects of higher mean T-l depend on species and initial T-l, and (b) acclimation reduces the effects of leaf warming, maintaining A(net) at >80% of its maximum under most thermal regimes.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
Nyckelord
- climate change
- global change
- leaf net CO2 assimilation rate
- rising temperatures
- stochastic process
- temperature variability
- thermal acclimation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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