Night and day - Circadian regulation of night-time dark respiration and light-enhanced dark respiration in plant leaves and canopies

Gessler, Arthur; Roy, Jacques; Kayler, Zachary; Ferrio Díaz, Juan Pedro; Alday, Josu G.; Bahn, Michael; Del Castillo, Jorge; Devidal, Sébastien; García-Muñoz, Sonia; Landais, Damien; Martín Gómez, Paula; Milcu, Alexandru; Piel, Clément; Pirhofer Walzl, Karin; Galiano, Lucia; Schaub, Marcus; Haeni, Matthias; Ravel, Olivier; Salekin, Serajis; Tissue, David T.; Tjoelker, Mark G.; Voltas Velasco, Jordi; Hoch, Güter; Resco de Dios, Víctor

doi:https://doi.org/10.1016/j.envexpbot.2017.01.014

Visualitza/Obre

Postprint (568.5Kb)

Data de publicació

2017

Autor/a

Gessler, Arthur

Roy, Jacques

Kayler, Zachary

Ferrio Díaz, Juan Pedro

Alday, Josu G.

Bahn, Michael

Del Castillo, Jorge

Devidal, Sébastien

García-Muñoz, Sonia

Landais, Damien

Martín Gómez, Paula

Milcu, Alexandru

Piel, Clément

Pirhofer Walzl, Karin

Galiano, Lucia

Schaub, Marcus

Haeni, Matthias

Ravel, Olivier

Salekin, Serajis

Tissue, David T.

Tjoelker, Mark G.

Voltas Velasco, Jordi

Hoch, Güter

Resco de Dios, Víctor

Citació recomanada

Gessler, Arthur; Roy, Jacques; Kayler, Zachary; Ferrio Díaz, Juan Pedro; Alday, Josu G.; Bahn, Michael; ... Resco de Dios, Víctor. (2017) . Night and day - Circadian regulation of night-time dark respiration and light-enhanced dark respiration in plant leaves and canopies. Environmental and Experimental Botany, 2017, vol. 137, p. 14-25. https://doi.org/10.1016/j.envexpbot.2017.01.014.

Resum

The potential of the vegetation to sequester C is determined by the balance between assimilation and respiration. Respiration is under environmental and substrate-driven control, but the circadian clock might also contribute. To assess circadian control on night-time dark respiration (RD) and on light enhanced dark respiration (LEDR) - the latter providing information on the metabolic reorganization in the leaf during light-dark transitions - we performed experiments in macrocosms hosting canopies of bean and cotton. Under constant darkness (plus constant air temperature and air humidity), we tested whether circadian regulation of RD scaled from leaf to canopy respiration. Under constant light (plus constant air temperature and air humidity), we assessed the potential for leaf-level circadian regulation of LEDR. There was a clear circadian oscillation of leaf-level RD in both species and circadian patterns scaled to the canopy. LEDR was under circadian control in cotton, but not in bean indicating species-specific controls. The circadian rhythm of LEDR in cotton might indicate variable suppression of the normal cyclic function of the tricarboxylic-acid-cycle in the light. Since circadian regulation is assumed to act as an adaptive memory to adjust plant metabolism based on environmental conditions from previous days, circadian control of RD may help to explain temporal variability of ecosystem respiration.

URI

http://hdl.handle.net/10459.1/60520

DOI

https://doi.org/10.1016/j.envexpbot.2017.01.014

És part de

Environmental and Experimental Botany, 2017, vol. 137, p. 14-25

Col·leccions

Els fitxers de llicència següents estan associats amb aquest element:

Creative Commons

Aquest document està subjecte a una llicència Creative Commons.cc-by-nc-nd, (c) Elsevier, 2017