Three distinct biochemical subtypes of C-4 photosynthesis? A modelling analysis

Wang Y, Bräutigam A, Weber APM, Zhu X-G (2014)
Journal of Experimental Botany 65(13): 3567-3578.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
OA 3.55 MB
Autor/in
; ; ;
Abstract / Bemerkung
C-4 photosynthesis has higher light-use, nitrogen-use, and water-use efficiencies than C-3 photosynthesis. Historically, most of C-4 plants were classified into three subtypes (NADP-malic enzyme (ME), NAD-ME, or phosphoenolpyruvate carboxykinase (PEPCK) subtypes) according to their major decarboxylation enzyme. However, a wealth of historic and recent data indicates that flexibility exists between different decarboxylation pathways in many C-4 species, and this flexibility might be controlled by developmental and environmental cues. This work used systems modelling to theoretically explore the significance of flexibility in decarboxylation mechanisms and transfer acids utilization. The results indicate that employing mixed C-4 pathways, either the NADP-ME type with the PEPCK type or the NAD-ME type with the PEPCK type, effectively decreases the need to maintain high concentrations and concentration gradients of transport metabolites. Further, maintaining a mixture of C-4 pathways robustly affords high photosynthetic efficiency under a broad range of light regimes. A pure PEPCK-type C-4 photosynthesis is not beneficial because the energy requirements in bundle sheath cells cannot be fulfilled due to them being shaded by mesophyll cells. Therefore, only two C-4 subtypes should be considered as distinct subtypes, the NADP-ME type and NAD-ME types, which both inherently involve a supplementary PEPCK cycle.
Stichworte
Efficiency; flexibility; mixture; NADP-ME; NAD-ME; PEPCK
Erscheinungsjahr
2014
Zeitschriftentitel
Journal of Experimental Botany
Band
65
Ausgabe
13
Seite(n)
3567-3578
ISSN
0022-0957
eISSN
1460-2431
Page URI
https://pub.uni-bielefeld.de/record/2915135

Zitieren

Wang Y, Bräutigam A, Weber APM, Zhu X-G. Three distinct biochemical subtypes of C-4 photosynthesis? A modelling analysis. Journal of Experimental Botany. 2014;65(13):3567-3578.
Wang, Y., Bräutigam, A., Weber, A. P. M., & Zhu, X. - G. (2014). Three distinct biochemical subtypes of C-4 photosynthesis? A modelling analysis. Journal of Experimental Botany, 65(13), 3567-3578. doi:10.1093/jxb/eru058
Wang, Y., Bräutigam, A., Weber, A. P. M., and Zhu, X. - G. (2014). Three distinct biochemical subtypes of C-4 photosynthesis? A modelling analysis. Journal of Experimental Botany 65, 3567-3578.
Wang, Y., et al., 2014. Three distinct biochemical subtypes of C-4 photosynthesis? A modelling analysis. Journal of Experimental Botany, 65(13), p 3567-3578.
Y. Wang, et al., “Three distinct biochemical subtypes of C-4 photosynthesis? A modelling analysis”, Journal of Experimental Botany, vol. 65, 2014, pp. 3567-3578.
Wang, Y., Bräutigam, A., Weber, A.P.M., Zhu, X.-G.: Three distinct biochemical subtypes of C-4 photosynthesis? A modelling analysis. Journal of Experimental Botany. 65, 3567-3578 (2014).
Wang, Yu, Bräutigam, Andrea, Weber, Andreas P. M., and Zhu, Xin-Guang. “Three distinct biochemical subtypes of C-4 photosynthesis? A modelling analysis”. Journal of Experimental Botany 65.13 (2014): 3567-3578.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Copyright Statement:
This Item is protected by copyright and/or related rights. [...]
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
2019-09-06T09:18:54Z
MD5 Prüfsumme
ee2160d2f12c25186713a2fe048a222d

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 24609651
PubMed | Europe PMC

Suchen in

Google Scholar