Atmospheric CO2 enrichment: Kinetics of chlorophyll a fluorescence and photosynthetic CO2 uptake in individual, attached cotton leaves

1994 ◽  
Vol 34 (1) ◽  
pp. 75-86 ◽  
Author(s):  
Thomas Betsche
Keyword(s):  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Co2 Enrichment ◽  
Atmospheric Co2 ◽  
Co2 Uptake ◽  
Kinetics Of

scholarly journals Influence of Drought Acclimation and CO2 Enrichment on Osmotic Adjustment and Chlorophyll a Fluorescence of Sunflower during Drought

1988 ◽  
Vol 86 (4) ◽  
pp. 1108-1115 ◽  
Author(s):  
Jann P. Conroy ◽  
James M. Virgona ◽  
Robert M. Smillie ◽  
Edward W. Barlow
Keyword(s):  
Chlorophyll A ◽  
Osmotic Adjustment ◽  
Chlorophyll A Fluorescence ◽  
Co2 Enrichment ◽  
Drought Acclimation

Chlorophyll a fluorescence study revealing effects of flooding in canola hybrids

Biologia ◽  
2012 ◽  
Vol 67 (2) ◽  
Author(s):  
Anelise Perboni ◽  
Daniela Cassol ◽  
Fabio Silva ◽  
Diolina Silva ◽  
Marcos Bacarin
Keyword(s):  
Chlorophyll Fluorescence ◽  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Cell Metabolism ◽  
Brassica Napus L ◽  
Soil Flooding ◽  
Performance Indexes ◽  
Chlorophyll A Fluorescence Transient ◽  
The Difference ◽  
Kinetics Of

AbstractBy generating stress conditions soil flooding can induce alterations in the cell metabolism and thus is detrimental to plant growth. This study was done under the greenhouse conditions to determine the effect of soil flooding on the chlorophyll fluorescence of some hybrids of canola (Brassica napus L.). Fifty five days old plants were subjected to flooding for six days. There was no difference in the parameters modulate chlorophyll fluorescence, in contrast, some the parameters related to the energy flux in photosystem II varied due to flooding stress. At the end of the six days, the performance indexes (PItotal and PIABS) decreased, in all hybrids except in ‘Hyola 420’. The difference kinetics of the chlorophyll a fluorescence transient showed different effects on different sites of the photosynthetic machinery. It could be concluded that compared to the other hybrids, ‘Hyola 420’ was less sensitive to flooding.

CO2 uptake and chlorophyll a fluorescence of Suaeda fruticosa grown under diurnal rhythm and after transfer to continuous dark

2019 ◽  
Vol 142 (2) ◽  
pp. 211-227 ◽  
Author(s):  
Silas Wungrampha ◽  
Rohit Joshi ◽  
Ray S. Rathore ◽  
Sneh L. Singla-Pareek ◽  
Govindjee ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Diurnal Rhythm ◽  
Chlorophyll A Fluorescence ◽  
Co2 Uptake ◽  
Suaeda Fruticosa

Characterization of diurnal photosynthetic rhythms in the marine diatom Skeletonema costatum grown in synchronous culture under ambient and elevated CO2

2004 ◽  
Vol 31 (4) ◽  
pp. 399 ◽  
Author(s):  
Xiongwen Chen ◽  
Kunshan Gao
Keyword(s):  
Chlorophyll A ◽  
Elevated Co2 ◽  
Skeletonema Costatum ◽  
Co2 Enrichment ◽  
Light Period ◽  
Marine Diatom ◽  
Initial Slope ◽  
Co2 Uptake ◽  
Chlorophyll A Content ◽  
Ambient Co2

Photosynthetic performance was examined in Skeletonema costatum (Greville) Cleve. under 12 : 12-h light : dark (LD) cycle at ambient CO2 (350 μL L–1) and elevated CO2 (1000 μL L–1). At ambient CO2, the cellular chlorophyll a content, the light-saturated photosynthetic rate (Pm), the initial slope of the light saturation curves (α), the photochemical efficiency of PSII (Fv / Fm), the apparent carboxylating efficiency (ACE) and the photosynthetic affinity for CO2 [1 / Km(CO2)] all showed rhythmical changes with different amplitudes during the light period. The Pm had similar changing pattern in the light period with the ACE and 1 / Km(CO2) rather than with the α and Fv / Fm, indicating that rhythmical changes of photosynthetic capacity may be mainly controlled by the activity of C-reduction associated with CO2 uptake during the light period. The CO2 enrichment reduced the ACE and the affinity to CO2, and increased the α, cellular chlorophyll a content and Pm based on cell number. By contrast, the changing patterns of all photosynthetic parameters examined here during the light period had almost the same for cells grown at ambient CO2 and elevated CO2, suggesting that the photosynthetic rhythms of S. costatum are not affected by CO2 enrichment.

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