scholarly journals Glycolaldehyde Inhibits CO2 Fixation in the Cyanobacterium Synechococcus UTEX 625 without Inhibiting the Accumulation of Inorganic Carbon or the Associated Quenching of Chlorophyll a Fluorescence

1989 ◽  
Vol 91 (3) ◽  
pp. 1044-1049 ◽  
Author(s):  
Anthony G. Miller ◽  
David T. Canvin
Keyword(s):  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Co2 Fixation ◽  
Inorganic Carbon

Effect of the intracellular inorganic carbon pool on chlorophyll a fluorescence quenching and O2 photoreduction in air-grown cells of the cyanobacterium Synechococcus UTEX 625

1997 ◽  
Vol 75 (6) ◽  
pp. 946-954 ◽  
Author(s):  
Qinglin Li ◽  
David Thomas Canvin
Keyword(s):  
Electron Transport ◽  
Fluorescence Quenching ◽  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Inorganic Carbon ◽  
Electron Flow ◽  
Close Correlation ◽  
Carbon Pool ◽  
Key Words Cyanobacteria ◽  
Highly Correlated

Simultaneous measurements were made of O2 exchange, inorganic carbon (Ci) accumulation and assimilation, and chlorophyll a fluorescence of the cyanobacterium Synechococcus UTEX 625. The addition of Ci to cells at the CO2 compensation point resulted in quenching of chlorophyll a fluorescence in the presence or absence of the CO2 fixation inhibitor, iodoacetamide. The magnitude of quenching was related to electron flow to terminal electron acceptors such as CO2 and O2. When photosynthetic CO2 fixation was allowed, the rate of electron transport, as expressed by (F*m – F)/F*m, was highly correlated with the onset of photosynthesis. When CO2 fixation was inhibited by the addition of iodoacetamide, the observed fluorescence quenching was consistent with the enhanced rate of O2 photoreduction that occurred when Ci was added. There was a close correlation (r = 0.98) between the magnitude of O2-dependent fluorescence quenching and the amount of O2 photoreduction. The degree of stimulation of electron flow to O2 photoreduction was dependent on the inorganic carbon concentration. The K1/2 (Ci) for extracellular Ci was 1.36 ± 0.13 μM (mean ± SD, n = 3) and K1/2 (Ci) for the intracellular Ci pool was 1.4 ± 0.18 mM (mean ± SD, n = 3). The reduction of N,N-dimethyl-p-nitrosoaniline was also stimulated by the addition of Ci, whereas the addition of Ci had no effect on the reduction of 2,6-dimethylbenzoquinone and ferricyanide. The results suggest that Ci stimulates electron flow in photosystem I. Key words: cyanobacteria, O2 photoreduction, fluorescence, Ci concentrating mechanism, inorganic carbon pool, linear electron transport, kinetic study.

CO2 fixation and chlorophyll a fluorescence in leaves of Ramonda serbica during a dehydration–rehydration cycle

2008 ◽  
Vol 165 (7) ◽  
pp. 723-733 ◽  
Author(s):  
Elena Degl’Innocenti ◽  
Lucia Guidi ◽  
Branka Stevanovic ◽  
Flavia Navari
Keyword(s):  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Co2 Fixation

scholarly journals Remote sensing of sun-induced chlorophyll-a fluorescence in inland and coastal waters: Current state and future prospects

2021 ◽  
Vol 262 ◽  
pp. 112482
Author(s):  
Remika S. Gupana ◽  
Daniel Odermatt ◽  
Ilaria Cesana ◽  
Claudia Giardino ◽  
Ladislav Nedbal ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Chlorophyll A ◽  
Coastal Waters ◽  
Chlorophyll A Fluorescence ◽  
Future Prospects ◽  
Current State

scholarly journals Simultaneously measuring carbon uptake capacity and chlorophyll a fluorescence dynamics in algae

2021 ◽  
Vol 58 ◽  
pp. 102399
Author(s):  
Jason Hupp ◽  
Johnathan I.E. McCoy ◽  
Allen J. Millgan ◽  
Graham Peers
Keyword(s):  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Carbon Uptake ◽  
Uptake Capacity

scholarly journals Chlorophyll a fluorescence illuminates a path connecting plant molecular biology to Earth-system science

Nature Plants ◽  
2021 ◽  
Author(s):  
Albert Porcar-Castell ◽  
Zbyněk Malenovský ◽  
Troy Magney ◽  
Shari Van Wittenberghe ◽  
Beatriz Fernández-Marín ◽  
...  
Keyword(s):  
Molecular Biology ◽  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Plant Molecular Biology ◽  
Earth System ◽  
Earth System Science ◽  
System Science

Linking changes in chlorophyll a fluorescence with drought stress susceptibility in mung bean [ Vigna radiata (L.) Wilczek]

2021 ◽  
Author(s):  
Hussan Bano ◽  
Habib‐ur‐Rehman Athar ◽  
Zafar Ullah Zafar ◽  
Hazem M. Kalaji ◽  
Muhammad Ashraf
Keyword(s):  
Drought Stress ◽  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Stress Susceptibility
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