Acclimation of leaf respiration temperature responses across thermally contrasting biomes

Autor: Patrick Meir, Lasantha K. Weerasinghe, Kevin L. Griffin, Danielle Creek, Mark G. Tjoelker, John J. G. Egerton, Lingling Zhu, Shinichi Asao, Keith J. Bloomfield, Vaughan Hurry, Michael J. Liddell, Matthew H. Turnbull, Lucy Hayes, Owen K. Atkin
Přispěvatelé: Australia's national university, Western Sydney University, Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant (PIAF), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Clermont Auvergne (UCA), Columbia University [New York], Swedish University of Agricultural Sciences (SLU), James Cook University (JCU), University of Kent [Canterbury], Australian Research Council / DP0986823, DP130101252, CE140100008Australian Government
Rok vydání: 2020
Předmět:
Zdroj: New Phytologist
New Phytologist, Wiley, 2021, 229 (3), pp.1312-1325. ⟨10.1111/nph.16929⟩
New Phytologist, 2021, 229 (3), pp.1312-1325. ⟨10.1111/nph.16929⟩
Zhu, L, Bloomfield, K J, Asao, S, Tjoelker, M G, Egerton, J J G, Hayes, L, Weerasinghe, L K, Creek, D, Griffin, K L, Hurry, V, Liddell, M, Meir, P, Turnbull, M & Atkin, O K 2021, ' Acclimation of leaf respiration temperature responses across thermally contrasting biomes ', New Phytologist, vol. 229, no. 3, pp. 1312-1325 . https://doi.org/10.1111/nph.16929
ISSN: 1469-8137
0028-646X
Popis: International audience; Short-term temperature response curves of leaf dark respiration (R-T) provide insights into a critical process that influences plant net carbon exchange. This includes how respiratory traits acclimate to sustained changes in the environment. Our study analysed 860 high-resolutionR-T(10-70 degrees C range) curves for: (a) 62 evergreen species measured in two contrasting seasons across several field sites/biomes; and (b) 21 species (subset of those sampled in the field) grown in glasshouses at 20 degrees C : 15 degrees C, 25 degrees C : 20 degrees C and 30 degrees C : 25 degrees C, day : night. In the field, across all sites/seasons, variations inR(25)(measured at 25 degrees C) and the leafTwhereRreached its maximum (T-max) were explained by growthT(mean air-Tof 30-d before measurement), solar irradiance and vapour pressure deficit, with growthThaving the strongest influence.R(25)decreased andT(max)increased with rising growthTacross all sites and seasons with the single exception of winter at the cool-temperate rainforest site where irradiance was low. The glasshouse study confirmed thatR(25)andT(max)thermally acclimated. Collectively, the results suggest: (1) thermal acclimation of leafRis common in most biomes; and (2) the highTthreshold of respiration dynamically adjusts upward when plants are challenged with warmer and hotter climates.
Databáze: OpenAIRE
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