Changes in total leaf nitrogen and partitioning of leaf nitrogen drive photosynthetic acclimation to light in fully developed walnut leaves Export

@article{citeulike:4372676, abstract = {Comprehensive studies on the processes involved in photosynthetic acclimation after a sudden change in light regime are scarce, particularly for trees. We tested (i) the ability of photosynthetic acclimation in the foliage of walnut trees growing outdoors after low-to-high and high-to-low light transfers made early or late in the vegetation cycle, and (ii) the relative importance of changes in total leaf nitrogen versus changes in the partitioning of leaf nitrogen between the different photosynthetic functions during a 2 month period after transfer. Changes in maximum carboxylation rate, light-saturated electron transport rate, respiration rate, total leaf nitrogen, ribulose 1·5-bisphosphate carboxylase/oxygenase (Rubisco) and total chlorophylls were surveyed before and after the change in light regime. Respiration rate acclimated fully within 1 week of transfer, and full acclimation was observed 1 month after transfer for the amount of Rubisco. In contrast, total nitrogen and photosynthetic capacity acclimated only partially during the 2 month period. Changes in photosynthetic capacity were driven by changes in both total leaf nitrogen and leaf nitrogen partitioning. The extent of acclimation also depended strongly on leaf age at the time of the change in light regime.}, address = {UMR-PIAF Integrated Tree Physiology (INRA-University Blaise Pascal), 234 avenue du Brzet, 63039 Clermont- Ferrand cedex 02, France, ; Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen AB15 8QH, UK and ; UMR INRA-UHP Ecologie-Ecophysiologie Forestire, 54280 Champenoux, France}, author = {Frak, E. and Le Roux, X. and Millard, P. and Dreyer, E. and Jaouen, G. and Saint-Joanis, B. and Wendler, R.}, citeulike-article-id = {4372676}, citeulike-linkout-0 = {http://dx.doi.org/10.1046/j.0016-8025.2001.00784.x}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/118987335/ABSTRACT}, doi = {10.1046/j.0016-8025.2001.00784.x}, journal = {Plant, Cell \& Environment}, keywords = {walnut}, number = {12}, pages = {1279--1288}, posted-at = {2009-04-21 18:18:35}, priority = {2}, title = {Changes in total leaf nitrogen and partitioning of leaf nitrogen drive photosynthetic acclimation to light in fully developed walnut leaves}, url = {http://dx.doi.org/10.1046/j.0016-8025.2001.00784.x}, volume = {24}, year = {2001} }

TY - JOUR ID - citeulike:4372676 L3 - citeulike-article-id:4372676 N2 - Comprehensive studies on the processes involved in photosynthetic acclimation after a sudden change in light regime are scarce, particularly for trees. We tested (i) the ability of photosynthetic acclimation in the foliage of walnut trees growing outdoors after low-to-high and high-to-low light transfers made early or late in the vegetation cycle, and (ii) the relative importance of changes in total leaf nitrogen versus changes in the partitioning of leaf nitrogen between the different photosynthetic functions during a 2 month period after transfer. Changes in maximum carboxylation rate, light-saturated electron transport rate, respiration rate, total leaf nitrogen, ribulose 1·5-bisphosphate carboxylase/oxygenase (Rubisco) and total chlorophylls were surveyed before and after the change in light regime. Respiration rate acclimated fully within 1 week of transfer, and full acclimation was observed 1 month after transfer for the amount of Rubisco. In contrast, total nitrogen and photosynthetic capacity acclimated only partially during the 2 month period. Changes in photosynthetic capacity were driven by changes in both total leaf nitrogen and leaf nitrogen partitioning. The extent of acclimation also depended strongly on leaf age at the time of the change in light regime. IS - 12 JF - Plant, Cell & Environment AD - UMR-PIAF Integrated Tree Physiology (INRA-University Blaise Pascal), 234 avenue du Brzet, 63039 Clermont- Ferrand cedex 02, France, ; Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen AB15 8QH, UK and ; UMR INRA-UHP Ecologie-Ecophysiologie Forestire, 54280 Champenoux, France EP - 1288 TI - Changes in total leaf nitrogen and partitioning of leaf nitrogen drive photosynthetic acclimation to light in fully developed walnut leaves VL - 24 SP - 1279 KW - walnut AU - Frak, E AU - Le Roux, X AU - Millard, P AU - Dreyer, E AU - Jaouen, G AU - Saint-Joanis, B AU - Wendler, R PY - 2001/// UR - http://dx.doi.org/10.1046/j.0016-8025.2001.00784.x ER -