Dark CO2 fixation in leaves of tomato plants grown with ammonium and nitrate as nitrogen sources

1981 ◽  
Vol 60 (2) ◽  
pp. 213-222 ◽  
Author(s):  
Motoki Ikeda ◽  
Yoshio Yamada
Keyword(s):  
Co2 Fixation ◽  
Nitrogen Sources ◽  
Tomato Plants ◽  
Dark Co2 Fixation

scholarly journals Dark CO2 Fixation and its Role in the Growth of Plant Tissue

1966 ◽  
Vol 41 (5) ◽  
pp. 755-759 ◽  
Author(s):  
Walter E. Splittstoesser
Keyword(s):  
Plant Tissue ◽  
Co2 Fixation ◽  
Dark Co2 Fixation

scholarly journals Physico-chemical characteristics and productivity of tomato plants in function of nitrogen sources and doses

2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Natália Silva Assunção ◽  
Natalia Oliveira Silva ◽  
Flávio Lemes Fernandes ◽  
Leonardo Angelo de Aquino ◽  
Maria Elisa De Sena Fernandes
Keyword(s):  
Ammonium Nitrate ◽  
Ph Value ◽  
Block Design ◽  
Fruit Size ◽  
Nitrogen Sources ◽  
Physicochemical Characteristics ◽  
Leaf Nitrogen ◽  
Nitrogen Fertilizers ◽  
Control Treatment ◽  
Tomato Plants

The objective of this study was to evaluate the effect of nitrogen sources and rates on the physicochemical characteristics and yield of tomato plants. Forty hybrids were cultivated at 100 and 400 kg ha-1 of N, combined with four sources (urea, ammonium sulfate, ammonium nitrate and calcium), plus a treatment without N application in a randomized complete block design four replicates. Size, stem diameter, number of leaves, SPAD (Soil Plant Analysis Development), leaf nitrogen, number of fruits / plants, fruit firmness, bark thickness and average fruit size, ° BRIX, pH, calcium, potassium and sodium in fruits. There was an increase in SPAD index, Brix and longitudinal diameter of fruits as a function of the N dose. The use of ammonium nitrate and calcium provided stronger fruits. Urea and ammonium nitrate provided the highest pH value in tomato fruits. The application of the 100 kg ha-1 dose of N resulted in the highest potassium content in fruits. The highest productivity was obtained with the application of sources containing ammonium and the lowest in the control treatment. Sources and doses of nitrogen fertilizers influenced growth, productivity and parameters related to tomato quality.  

Pod photosynthesis and seed dark CO2 fixation support oil synthesis in developingBrassica seeds

1995 ◽  
Vol 20 (1) ◽  
pp. 49-58 ◽  
Author(s):  
H. R. Singal ◽  
Gurmeet Talwar ◽  
Anita Dua ◽  
Randhir Singh
Keyword(s):  
Co2 Fixation ◽  
Oil Synthesis ◽  
Pod Photosynthesis ◽  
Dark Co2 Fixation

Effects of preillumination with light of different wavelengths on subsequent dark CO2-fixation in Chlorella cells

1970 ◽  
Vol 48 (6) ◽  
pp. 1203-1207 ◽  
Author(s):  
Shigetoh Miyachi ◽  
Daisuke Hogetsu
Keyword(s):  
Blue Light ◽  
Co2 Fixation ◽  
Red Light ◽  
Anaerobic Conditions ◽  
Nitrogen Gas ◽  
Pep Carboxylase ◽  
Radioactive Carbon ◽  
Initial Fixation ◽  
Dark Fixation ◽  
Dark Co2 Fixation

The effects of preillumination with monochromatic red or blue light on the subsequent dark 14CO2-fixation in Chlorella cells were studied under aerobic as well as anaerobic conditions. When the cell suspension was made aerobic by bubbling air (CO2-free) throughout the periods of preillumination and the following dark 14CO2-fixation, the initial fixation product was mainly PGA. The radioactive carbon first incorporated in PGA was transferred mostly to aspartate during the later periods of dark 14CO2-fixation. The rate of 14C-incorporation into aspartate after preillumination with blue light was 2 to 3 times as high as that observed after red-light pretreatment. The observations support our previous inference that the activity of PEP carboxylase in Chlorella cells is stimulated by preillumination with blue light. When nitrogen gas was used during preillumination and the subsequent dark fixation, the radioactivity of 14C incorporated during the initial enhanced 14CO2-fixation was eventually transferred to alanine and lactate. The increase in radioactivity of alanine and lactate was more pronounced during dark fixation after preillumination with red light than after preillumination with blue light.

Environmental influences on light and dark CO2 fixation by Kalanchoe daigremontiana

1975 ◽  
Vol 53 (11) ◽  
pp. 1132-1138 ◽  
Author(s):  
E. Nalborczyk ◽  
L. J. Lacroix ◽  
R. D. Hill
Keyword(s):  
Co2 Fixation ◽  
Red Light ◽  
Day Length ◽  
Low Oxygen ◽  
Long Day ◽  
C Value ◽  
Warm Night ◽  
Dark Co2 Fixation ◽  
Kalanchoë Daigremontiana ◽  
Kalanchoe Daigremontiana

The influence of day length, light quality, temperature, drought, and oxygen concentration on gas exchange of Kalanchoe daigremontiana was investigated. The ratio of photosynthesis to dark CO2 fixation with plants under a long-day and short-warm-night regime was 2.0 and under a short-day and long-cool-night regime, 0.2. With drought conditions this value may be less than 0.02. Under low oxygen concentrations high photosynthetic rates of about 20 mg CO2 dm−2 h−1 were observed with a compensation point of about 20 ppm. Restricting CO2 supply to dark periods produced plants with a δ13C value of −10.6‰. Restricting CO2 supply to light periods gave a δ13C value of −25.9‰, whereas no control of CO2 gave δ13C values of −15‰. The data obtained suggest that variations in δ13C values in Kalanchoe result from changes in the proportion of light and dark CO2 fixation.Far-red light and oxygen promoted the release of CO2 from Kalanchoe after the plants had undergone a period of dark CO2 fixation. Maximum release occurred within about 1 h. The effect could be reversed by removal of either far-red light or oxygen. Decreases in the acidity of the plants accompanied CO2 release, which indicated that decarboxylation of a C4 acid was the source of the CO2.

Malonote synthesis via dark CO2 fixation in bush-bean roots

1961 ◽  
Vol 46 (2) ◽  
pp. 403-405 ◽  
Author(s):  
Ray C. Huffaker ◽  
Arthur Wallace
Keyword(s):  
Co2 Fixation ◽  
Bush Bean ◽  
Dark Co2 Fixation

scholarly journals High abundance and dark CO2 fixation of chemolithoautotrophic prokaryotes in anoxic waters of the Baltic Sea

2008 ◽  
Vol 53 (1) ◽  
pp. 14-22 ◽  
Author(s):  
Jost GÜnter ◽  
Mikhail V. Zubkov ◽  
Evgeniy Yakushev ◽  
Matthias Labrenz ◽  
Klaus JÜrgens
Keyword(s):  
Baltic Sea ◽  
Co2 Fixation ◽  
High Abundance ◽  
The Baltic Sea ◽  
Anoxic Waters ◽  
The Baltic ◽  
Dark Co2 Fixation
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