Spatial and seasonal variability of temperature responses of biochemical photosynthesis parameters and leaf nitrogen content within a Pinus densiflora crown.

We measured seasonal variation in area-based nitrogen concentration (N), maximum rate of carboxylation (Vcmax) and maximum rate of electron transport (Jmax) in 1-year-old needles along four first-order branches within a Pinus densiflora Sieb. & Zucc. crown, and analyzed their relationships to growth irradiance and temperature. Each leaf light environment was expressed as a ratio of the monthly mean of daily integrated photosynthetically active irradiance (Iint) for the particular needle to Iint above the canopy (Irel). Needle N decreased in the upper crown during the development of new needles, whereas it remained fairly constant in the lower crown, reflecting differences between upper and lower crown needles in their contribution to the nitrogen of new needles. Gradients of N within the crown were correlated with Irel in all seasons (r2 = 0.40-0.78). Seasonal variation in N was weakly correlated with mean daily air minimum temperatures. Both Vcmax and Jmax showed seasonal variation in all first-order branches, and decreased to their lowest values in winter. The gradients of Vcmax and Jmax within the crown were not correlated with Irel in some seasons, but were correlated with changes in N in most months (r2 = 0.33-0.75), except in the winter. Furthermore, the regression slope of the relationship between N and Vcmax and the temperature response of Vcmax and Jmax exhibited seasonal variation.

[1]  D. Campbell,et al.  Seasonal changes in photosystem II organisation and pigment composition in Pinus sylvestris , 1995, Planta.

[2]  J. Berry,et al.  A biochemical model of photosynthetic CO2 assimilation in leaves of C3 species , 1980, Planta.

[3]  J. Bunce,et al.  Acclimation of photosynthesis to temperature in eight cool and warm climate herbaceous C3 species: Temperature dependence of parameters of a biochemical photosynthesis model , 2004, Photosynthesis Research.

[4]  J. R. Evans.  Photosynthesis and nitrogen relationships in leaves of C3 plants , 2004, Oecologia.

[5]  Horizontal and vertical variations in photosynthetic capacity in a Pinus densiflora crown in relation to leaf nitrogen allocation and acclimation to irradiance. , 2003, Tree physiology.

[6]  D. Whitehead,et al.  Seasonal and temperature dependence of photosynthesis and respiration for two co-occurring broad-leaved tree species with contrasting leaf phenology. , 2003, Tree physiology.

[7]  Qingmin Han,et al.  Photoprotective role of rhodoxanthin during cold acclimation in Cryptomeria japonica , 2003 .

[8]  Denis Loustau,et al.  Temperature response of parameters of a biochemically based model of photosynthesis. II. A review of experimental data , 2002 .

[9]  B. Medlyn,et al.  Temperature response of parameters of a biochemically based model of photosynthesis. I. Seasonal changes in mature maritime pine (Pinus pinaster Ait.) , 2002 .

[10]  Antonio Donato Nobre,et al.  Acclimation of photosynthetic capacity to irradiance in tree canopies in relation to leaf nitrogen concentration and leaf mass per unit area , 2002 .

[11]  G. Öquist,et al.  Photosynthetic electron transport adjustments in overwintering Scots pine (Pinus sylvestris L.) , 2001, Planta.

[12]  Dennis D. Baldocchi,et al.  Leaf age affects the seasonal pattern of photosynthetic capacity and net ecosystem exchange of carbon in a deciduous forest , 2001 .

[13]  M. Adams,et al.  Distribution of N, Rubisco and photosynthesis in Pinus pinaster and acclimation to light , 2001 .

[14]  X. Le Roux,et al.  Temperature response of leaf photosynthetic capacity in seedlings from seven temperate tree species. , 2001, Tree physiology.

[15]  Dennis D. Baldocchi,et al.  Spatial and seasonal variability of photosynthetic parameters and their relationship to leaf nitrogen in a deciduous forest. , 2000, Tree physiology.

[16]  D. Ellsworth.  Seasonal CO(2) assimilation and stomatal limitations in a Pinus taeda canopy. , 2000, Tree physiology.

[17]  R. Ceulemans,et al.  Effects of season, needle age and elevated atmospheric CO(2) on photosynthesis in Scots pine (Pinus sylvestris). , 2000, Tree physiology.

[18]  Ü. Niinemets,et al.  Shape of leaf photosynthetic electron transport versus temperature response curve is not constant along canopy light gradients in temperate deciduous trees , 1999 .

[19]  Michael Bahn,et al.  Inter‐specific variation of the biochemical limitation to photosynthesis and related leaf traits of 30 species from mountain grassland ecosystems under different land use , 1999 .

[20]  K. Hikosaka,et al.  Balancing carboxylation and regeneration of ribulose‐1,5‐ bisphosphate in leaf photosynthesis: temperature acclimation of an evergreen tree, Quercus myrsinaefolia , 1999 .

[21]  X. Le Roux,et al.  Parameterization and testing of a biochemically based photosynthesis model for walnut (Juglans regia) trees and seedlings. , 1999, Tree physiology.

[22]  P. Jarvis,et al.  Long-term photosynthetic acclimation to increased atmospheric CO(2) concentration in young birch (Betula pendula) trees. , 1998, Tree physiology.

[23]  E. Schulze,et al.  Nutrient contents and concentrations in relation to growth of Picea abies and Fagus sylvatica along a European transect. , 1997, Tree physiology.

[24]  D. Whitehead,et al.  The response of photosynthetic model parameters to temperature and nitrogen concentration in Pinus radiata D. Don , 1997 .

[25]  John Tenhunen,et al.  A model separating leaf structural and physiological effects on carbon gain along light gradients for the shade‐tolerant species Acer saccharum , 1997 .

[26]  D. Pury,et al.  Simple scaling of photosynthesis from leaves to canopies without the errors of big‐leaf models , 1997 .

[27]  T. Dawson,et al.  Seasonal air and soil temperature effects on photosynthesis in red spruce (Picea rubens) saplings. , 1997, Tree physiology.

[28]  J. Hansen,et al.  Assimilation, allocation and utilization of carbon by 3-year-old Scots pine (Pinus sylvestris L .) trees during winter and early spring , 1996, Trees.

[29]  M. Battaglia,et al.  Photosynthetic temperature responses of Eucalyptus globulus and Eucalyptus nitens. , 1996, Tree physiology.

[30]  Dennis D. Baldocchi,et al.  Scaling carbon dioxide and water vapour exchange from leaf to canopy in a deciduous forest. I. Leaf model parametrization , 1995 .

[31]  Dennis D. Baldocchi,et al.  Scaling carbon dioxide and water vapour exchange from leaf to canopy in a deciduous forest. II. Model testing and application , 1995 .

[32]  A. Makino,et al.  Effects of Growth Temperature on the Responses of Ribulose-1,5-Biphosphate Carboxylase, Electron Transport Components, and Sucrose Synthesis Enzymes to Leaf Nitrogen in Rice, and Their Relationships to Photosynthesis , 1994, Plant physiology.

[33]  A. Makino,et al.  Responses of Ribulose-1,5-Bisphosphate Carboxylase, Cytochrome f, and Sucrose Synthesis Enzymes in Rice Leaves to Leaf Nitrogen and Their Relationships to Photosynthesis , 1994, Plant physiology.

[34]  Stan D. Wullschleger,et al.  Biochemical Limitations to Carbon Assimilation in C3 Plants—A Retrospective Analysis of the A/Ci Curves from 109 Species , 1993 .

[35]  James F. Reynolds,et al.  Modelling photosynthesis of cotton grown in elevated CO2 , 1992 .

[36]  E. K. Sadanandan Nambiar,et al.  Nutrient retranslocation in temperate conifers. , 1991, Tree physiology.

[37]  P. Reich,et al.  Leaf age and season influence the relationships between leaf nitrogen, leaf mass per area and photosynthesis in maple and oak trees , 1991 .

[38]  H. Mooney,et al.  Plant Physiological Ecology-Field Methods and Instrumentation. , 1990 .

[39]  J. Ehleringer.  Temperature and energy budgets , 1989 .