title: Acclimation of photosynthesis and respiration is asynchronous in response to changes in temperature regardless of plant functional group.
abstract: Gas exchange, fluorescence, western blot and chemical composition analyses were combined to assess if three functional groups (forbs, grasses and evergreen trees/shrubs) differed in acclimation of leaf respiration (R) and photosynthesis (A) to a range of growth temperatures (7, 14, 21 and 28 degrees C). When measured at a common temperature, acclimation was greater for R than for A and differed between leaves experiencing a 10-d change in growth temperature (PE) and leaves newly developed at each temperature (ND). As a result, the R : A ratio was temperature dependent, increasing in cold-acclimated plants. The balance was largely restored in ND leaves. Acclimation responses were similar among functional groups. Across the functional groups, cold acclimation was associated with increases in nonstructural carbohydrates and nitrogen. Cold acclimation of R was associated with an increase in abundance of alternative and/or cytochrome oxidases in a species-dependent manner. Cold acclimation of A was consistent with an initial decrease and subsequent recovery of thylakoid membrane proteins and increased abundance of proteins involved in the Calvin cycle. Overall, the results point to striking similarities in the extent and the biochemical underpinning of acclimation of R and A among contrasting functional groups differing in overall rates of metabolism, chemical composition and leaf structure.
authors: Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, S-901 87 Umeå, Sweden.|Department of Biology (Area 2), The University of York, PO Box 373, York YO10 5YW, UK.
authors: Catherine
authors: C
authors: Campbell
authors: Department of Biology (Area 2), The University of York, PO Box 373, York YO10 5YW, UK.
authors: Lindsey
authors: L
authors: Atkinson
authors: Department of Biology (Area 2), The University of York, PO Box 373, York YO10 5YW, UK.
authors: Joana
authors: J
authors: Zaragoza-Castells
authors: Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, S-901 87 Umeå, Sweden.
authors: Maria
authors: M
authors: Lundmark
authors: Department of Biology (Area 2), The University of York, PO Box 373, York YO10 5YW, UK.
authors: Owen
authors: O
authors: Atkin
authors: Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, S-901 87 Umeå, Sweden.
authors: Vaughan
authors: V
authors: Hurry
mesh_terms: D000064:Acclimatization; D050260:Carbohydrate Metabolism; D002245:Carbon Dioxide / Q000378:metabolism; D003080:Cold Temperature; D006706:Homeostasis; D009584:Nitrogen / Q000378:metabolism; D010788:Photosynthesis; D018515:Plant Leaves / Q000378:metabolism; D010944:Plants / Q000378:metabolism*
chemical_list: D002245:Carbon Dioxide; D009584:Nitrogen
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