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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erw104
|2 doi
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|a pubmed24n0861.xml
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|a (NLM)26969744
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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 Yin, Xinyou
|e verfasserin
|4 aut
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|a Temperature response of bundle-sheath conductance in maize leaves
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 16.11.2017
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|a Date Revised 13.11.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a A small bundle-sheath conductance (g bs) is essential for the C4 CO2-concentrating mechanism to suppress photorespiration effectively. To predict the productivity of C4 crops accurately under global warming, it is necessary to examine whether and how g bs responds to temperature. We investigated the temperature response of g bs in maize by fitting a C4 photosynthesis model to combined gas exchange and chlorophyll fluorescence measurements of irradiance and CO2 response curves at 21% and 2% O2 within the range of 13.5-39 °C. The analysis was based on reported kinetic constants of C4 Rubisco and phosphoenolpyruvate carboxylase and temperature responses of C3 mesophyll conductance (g m). The estimates of g bs varied greatly with leaf temperature. The temperature response of g bs was well described by the peaked Arrhenius equation, with the optimum temperature being ~34 °C. The assumed temperature responses of g m had only a slight impact on the temperature response of g bs In contrast, using extreme values of some enzyme kinetic constants changed the shape of the response, from the peaked optimum response to the non-peaked Arrhenius pattern. Further studies are needed to confirm such an Arrhenius response pattern from independent measurement techniques and to assess whether it is common across C4 species
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Diffusive resistance
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|a Zea mays.
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|a maximum PEPc activity
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|a maximum Rubisco activity
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|a modelling
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|a warming effect
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|a Carbon Dioxide
|2 NLM
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|a 142M471B3J
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|a van der Putten, Peter E L
|e verfasserin
|4 aut
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|a Driever, Steven M
|e verfasserin
|4 aut
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|a Struik, Paul C
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 67(2016), 9 vom: 11. Apr., Seite 2699-714
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:67
|g year:2016
|g number:9
|g day:11
|g month:04
|g pages:2699-714
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|u http://dx.doi.org/10.1093/jxb/erw104
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