Nitrate, nitrite and ammonia assimilation by leaves: Effect of light, carbon dioxide and oxygen

Planta ◽  
1974 ◽  
Vol 116 (3) ◽  
pp. 207-224 ◽  
Author(s):  
D. T. Canvin ◽  
C. A. Atkins
Keyword(s):  
Carbon Dioxide ◽  
Ammonia Assimilation ◽  
Effect Of Light

scholarly journals Shedding light on biogas: a transparent reactor triggers the development of a biofilm dominated by Rhodopseudomonas faecalis that holds potential for improved biogas production

2019 ◽  
Author(s):  
Christian Abendroth ◽  
Adriel Latorre- Pérez ◽  
Manuel Porcar ◽  
Claudia Simeonov ◽  
Olaf Luschnig ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Biogas Production ◽  
Rrna Gene ◽  
Metagenomic Sequencing ◽  
Nanopore Sequencing ◽  
Anaerobic Conditions ◽  
Complete Darkness ◽  
Anaerobic Digesters ◽  
Shotgun Metagenomic Sequencing ◽  
Effect Of Light

AbstractConventional anaerobic digesters intended for the production of biogas usually operate in complete darkness. Therefore, little is known about the effect of light on microbial communities operating in anaerobic digesters. In the present work, we have studied through 16S rRNA gene amplicon Nanopore sequencing and shotgun metagenomic sequencing the taxonomic and functional structure of the microbial community forming a biofilm on the inner wall of a lab-scale transparent anaerobic biodigester illuminated with natural sunlight. The biofilm was composed of microorganisms involved in the four metabolic processes needed for biogas production. The biofilm proved surprisingly rich in Rhodopseudomonas faecalis, a versatile bacterium able to carry out a photoautotroph metabolism when grown under anaerobic conditions. Our results suggest that this bacterium, able to fix carbon dioxide, could be considered for its use in transparent biogas fermenters in order to contribute to the production of optimized biogas with a higher CH4:CO2 ratio than the biogas produced in regular, opaque digesters. To the best of our knowledge, this is the first study supporting illuminated bioreactors as a new bioprocess for the obtention of biogas enriched in methane.

THE EFFECT OF LIGHT AND TEMPERATURE ON THE GROWTH AND RESPIRATION OF BOTRYTIS SQUAMOSA

1958 ◽  
Vol 36 (6) ◽  
pp. 927-934 ◽  
Author(s):  
R. H. Stinson ◽  
R. S. Gage ◽  
E. B. MacNaughton
Keyword(s):  
Carbon Dioxide ◽  
Maximum Growth ◽  
Temperature Sensitive ◽  
Gas Analyzer ◽  
Botrytis Squamosa ◽  
Light Levels ◽  
Considerable Portion ◽  
Mycelial Mass ◽  
Infrared Gas Analyzer ◽  
Effect Of Light

The fungus organism Botrytis squamosa Walker when maintained at constant temperature is unaffected by light levels as high as 100 ft-c for periods of several days and by levels of 250 ft-c for periods of a few hours. This is contrary to an earlier report which said that an illuminance of 70 ft-c would prevent growth of the organism. It is suspected that a combination of undetected temperature gradients and the variability of the organism lead to the earlier report of a light inhibition.The organism is temperature sensitive. No growth occurred at, or beyond, 30 °C. Maximum growth occurred at 23 °C, the lowest temperature used in the investigations.While all portions of the mycelial mass evolve some carbon dioxide, the most active evolution is generally around the circumference. Variations in age and circumference accounted for a considerable portion of the variability in the carbon dioxide evolution.Measuring techniques involved the use of thermocouples, a radiation thermopile and photronic cell, and an infrared gas analyzer.

ZIF/Co-C3N4 with enhanced electrocatalytic reduction of carbon dioxide activity by photoactivation process

Nanoscale ◽  
2021 ◽  
Author(s):  
Huihui Qi ◽  
Yunjie Zhou ◽  
Yi Li ◽  
Fan Liao ◽  
Zhenzhen Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Reduction ◽  
Composite Catalyst ◽  
Electrocatalytic Reduction ◽  
Effect Of Light

Introducing the effect of light into electrocatalytic system is an effective method to improve electrocatalytic carbon dioxide reduction (CO2RR). Here, the composite catalyst (ZIF/Co-C3N4) was prepared for electrocatalytic reduction of...

scholarly journals The Effect of Light of Different Intensities, Reduced Selectively and Non-selectively, upon the Rate of Growth of Nitzschia closterium

1931 ◽  
Vol 17 (3) ◽  
pp. 633-653 ◽  
Author(s):  
F. A. Stanbury
Keyword(s):  
Carbon Dioxide ◽  
Plant Growth ◽  
Nitzschia Closterium ◽  
Rate Of Growth ◽  
Effect Of Light

The effect of light upon plant growth is a problem which has attracted many workers since the discovery of Priestly, in 1771, that a plant could purify fixed air, carbon dioxide, which was followed by the supplementary work of Ingen-Housz and Senebier, who showed that the phenomenon was associated with the nourishment of the plant, and took place only in sunlight and through the agency of the green portions of the plant.

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