Dark respiration

Patterson, M. R., Sebens, K. P. and Olson, R. R. (1991). In situ measurements of flow effects on primary production and dark respiration in reef corals, Limnol. Oceanogr., 36, 936-948. [Pg.146]

A 10-year-old boy was hospitalized with serious bums during the next 2.5 days his bums were treated by applying 7.5 L of an antiseptic solution containing 2% phenol his urine became dark, respiration became labored, he fell into a coma, and died. Post mortem analysis of urine showed 200 mg/L of conjugated phenol (Cronin and Brauer 1949). [Pg.79]

To measure the dark respiration rates of photosynthetic tissue, measurements have to be performed in complete darkness, or with apparatus specially designed for this purpose. Long term rates of photosynthesis can be evaluated indirectly by dry matter accumulation. However, this is a somewhat inaccurate measure, because the measured amount of dry matter accumulated under stress conditions is less than it would be under non-stressed ones. [Pg.164]

Photosynthesis is the major means of dry matter accumulation in plants. Net photosynthesis is a measure of the gain in assimilate by the plant, after photorespiration and dark respiration losses have been accounted for, and is proportional to quantitative yield production.1... [Pg.119]

Effect of Temperature on the Rate of Dark Respiration of Individual Plant Parts from Three Jerusalem Artichoke Cultivars... [Pg.296]

The biogeochemical activities of microbes in the oceans was of interest since initial reports of elemental cycles in the oceans (Redfield, 1958). Initial attempts to determine rates of heterotrophic synthesis focused upon dark respiration rates of... [Pg.1107]

Burris, J. (1977). Photosynthesis, photorespiration, and dark respiration in eight species of algae. Mar. Biol. 39, 371-379. [Pg.1616]

Lin G. H. and Ehleringer J. R. (1997) Carbon isotopic fractionation does not occur during dark respiration in C3 and C4. Plant Physiol. 114(1), 391-394. [Pg.2121]

Tcherkez G., Nogues S., Bleton J., Comic G., Badeck F., and Ghashghaie J. (2003) Metabolic origin of carbon isotope composition of leaf dark-respired CO2 in French bean. Plant Physiol. 131(1), 237-244. [Pg.2123]

Semikhatova O. A. (2000) Ecological physiology of plant dark respiration its past, present and future. Bot. Zh. 85, 15-32. [Pg.4111]

Four types of oxygen consumption occur in plants dark respiration, photorespiration, chloroplast respiration, and cyanide-resistant respiration. Other reviews of photorespiration have been published 41, 42) therefore it will not be discussed here. Also, because knowledge of respiratory ETS in plants is based on the higher plants in contrast to the algae, this section will be confined largely to the higher plant literature. [Pg.183]

Carbon dioxide is also fixed in the dark by photosynthetic organisms by the so-called Wood-Werkman reaction (Wood and Stjemholm, 1962). The CO2 assimilated, however, rarely exceeds that formed by dark respiration i.e. there is no net CO2 uptake. On the other hand, the amount of organic carbon derived from CO2 may be as high as 30% in heterotrophic bacteria and 90% in mixotrophic organisms. In the natural environment, non-photo-synthetic CO2 fixation by these organisms, together with the above-mentioned dark fixation by photosynthetic organisms, may under some condi-... [Pg.49]

Respiration is the reduction of O2 to H2O during the oxidation of carbohydrate to CO2. There are two types of respiration in photosynthetic organisms a dark respiration and a photorespiration [3]. Dark respiration includes O2 reduction and the oxidation of NADH and FADH2 in mitochondrial membranes, glycolysis, the Krebs cycle, and the oxidative pentose phosphate pathway. Respiration is commonly subdivided into two functional components growth respiration, supplying energy for new biomass production, and... [Pg.540]

Mitochondria from maize leaves do in fact respond to a series of strobilurins, but are in this case less sensitive than mitochondria from non-plant species (yeast, Botrytis, rat, house fly) [59]. Note that, generally, inhibition of mitochondrial respiration in plants ( dark respiration ) does not lead to severe undesired influences on plant physiology. [Pg.481]

Richardson (1967) has used an infrared gas analyzer to follow CO 2 exchange (dark respiration and net photosynthesis) through the first 248 hr of germination of cotton seeds. [Pg.520]

Geider RJ, Osborne BA Respiration and microalgal growth a review of the quantitative relationship between dark respiration and growth. New Phytol 112(3) 327—341, 1989. [Pg.253]

The effect of VPD level on limiting quantum yield of CO2 fixation and fluorescence yield is shown in Table 1. Quantum yields were calculated from the slope of the CO2 assimilation versus irradiance at 17 mbars O2 and 350 pbars CO2. The quantum yield for photochemistry was reduced by 20% while dark respiration and fluorescence yields were unaffected by the high VPD. [Pg.397]

Table 2. Dark respiration of different parts of Samantha roses at stage 3 of shoot development at 25°C. Numbers in brackets are percent of C loss from each part.

PHOTOSYNTHESIS DARK RESPIRATION AND PLANT PRODUCTION IN NICOTIANA TABACUM GENOTYPES DERIVED FROM HAPLOIDS SELECTED BY LOW C02 SURVIVAL. [Pg.2810]

Leaf photosynthesis and dark respiration largely determine biomass accumulation by plants so that both parameters has been used as a selection criteria to improve crop s yield (1 2). [Pg.2810]

Because the selection criteria applied in the screening of haploid populations was clearly related to the carbon economy of entire plant, and also because the significant increase in dry matter production and leaf area per plant of selected genotypes on different field assays (7), the aim of this work was to characterize the photosynthesis and dark respiration of these genotypes in order to know the extent of possible physiological modifications which able them to survive in a low CO2 atmosphere and to yield higher plant production in field conditions. [Pg.2810]

TABLE 2. Dark respiration rates of young and old tobacco leaves... [Pg.2812]

Fig. 2B plots the slopes Ip from several experiments such as that shown in Fig. 1. The ordinate scale is chosen so that relative changes in Ip are scaled to relative changes in 02/Chl hr. Then the same curve used in Fig. 2A is drawn upon Fig. 2B. It is evident that the upshift in light intensity increases both the rate of dark respiration and the value of Ip in a closely related fashion. Fig. 2A and 2B also show the effects of return to darkness after 2 h of high light. Effects on dark respiration and on Ip are qualitatively similar although less closely related in time.

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