EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Relationship between CO(2)-dependent O(2) evolution and photosystem II activity in oak (Quercus petraea) trees grown in the field and in seedlings grown in ambient or elevated CO(2)


Tree Physiology 14(7_9): 725-733
Relationship between CO(2)-dependent O(2) evolution and photosystem II activity in oak (Quercus petraea) trees grown in the field and in seedlings grown in ambient or elevated CO(2)
The light-response of the apparent quantum yield of photosynthetic O2 evolution under non-photorespiratory conditions was measured together with the photochemical efficiency of PS II, the photochemical efficiency of open PS II reaction centers and the photochemical fluorescence quenching (q(p)) of leaf disks punched from oak leaves of seedlings grown in ambient (350 micromoles mol-1) or elevated (700 micromoles mol-1) CO2 in a greenhouse, and from sunlit leaves of mature oak trees (Quercus petraea (Man.) Liebl.). There were marked differences between seedlings and trees. In seedlings, CO2 concentration during growth did not modify the light response of photosynthesis or PS II activity. There was a single linear relationship between apparent quantum yield of photosynthetic O2 evolution and photochemical efficiency of PS II in seedling leaves that was independent of the CO2 concentration imposed during growth. In contrast, this relationship was curvilinear in sunlit leaves of adult trees. In seedling leaves, the decrease in q(p) (i.e., the proportion of open PS II reaction centers) largely accounted for the decrease in photochemical efficiency of PS II, whereas the decrease in photochemical efficiency of PS II in sunlit leaves of mature oak trees was dependent on both q(p) and the photochemical efficiency of open PS II reaction centers.


Accession: 002477662

PMID: 14967643

DOI: 10.1093/treephys/14.7-8-9.725



Related references

Field performance of Quercus petraea seedlings grown under competitive conditions: influence of prior undercutting in the seedbed. New Forests 28(1): 37-47, 2004

Competition and patterns of resource use among seedlings of five tropical trees grown at ambient and elevated CO2. Oecologia 79(2): 212-222, 1989

Competition and patterns of resource use among seedlings of five tropical trees grown at ambient and elevated carbon dioxide. Oecologia (Berlin) 79(2): 212-222, 1989

Photosynthesis of oak trees (Quercus petraea (Matt.) Liebl.) during drought under field conditions: diurnal course of net CO2 assimilation and photochemical efficiency of photosystem II. Plant, Cell and Environment 15(7): 809-820, 1992

Photosynthesis, Rubisco activity and mitochondrial malate oxidation in pedunculate oak (Quercus robur L.) seedlings grown under present and elevated atmospheric CO2 concentrations. Annales des Sciences Forestieres 53(2/3): 469-474, 1996

Photosynthesis of oak trees quercus petraea matt. liebl. during drought under field conditions diurnal course of net carbon dioxide assimilation and photochemical efficiency of photosystem ii. Plant Cell and Environment 15(7): 809-820, 1992

Geographical variation in phenology of Quercus petraea (Matt.) Liebl and Quercus robur L. oak grown in a greenhouse. Scandinavian Journal of Forest Research 23(2): 179-188, 2008

Greater antioxidant and respiratory metabolism in field-grown soybean exposed to elevated O3 under both ambient and elevated CO2. Plant, Cell & Environment 35(1): 169-184, 2014

Growth and quality of young oaks Quercus robur and Quercus petraea grown in cluster plantings in central Europe A weighted meta-analysis. Forest Ecology and Management 283(none), 2012

Responses of photosynthetic and defence systems to high temperature stress in Quercus suber L. seedlings grown under elevated CO2. Plant Biology 1(3): 365-371, 1999