The circadian rhythm of CO2 assimilation in detached leaves of Bryophyllum fedtschenkoi at 15 ~ C in normal air and continuous illumination is inhibited both by exposure to darkness, and to an atmosphere enriched with 5% CO2. During such exposures substantial fixation of CO2 takes place, and the mal
Light-induced changes in the period of the circadian rhythm of carbon dioxide output inBryophyllumleaves
β Scribed by Philip J. C. Harris; Malcolm B. Wilkins
- Publisher
- Springer-Verlag
- Year
- 1976
- Tongue
- English
- Weight
- 566 KB
- Volume
- 129
- Category
- Article
- ISSN
- 0032-0935
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The rhythm of carbon dioxide output in Bryophyllum leaves was entrained on exposure to 0.25 h of white light every 24 h. Entrainment also occurred on similar exposure to monochromatic radiation in spectral bands centred at 660 nm and, to a lesser extent, at 730 nm, but a band centred at 450 nm was w
The role of the epidermis in the generation of the endogenous circadian rhythm of CO2 exchange in leaves of Bryophyllum fedtschenkoi has been examined. At 25Β° C the rhythm of CO2 output exhibited by whole leaves kept in continuous darkness and an initially CO2-free air stream also occurs in isolated
Detached shoots of iBryophyllum ]edtschenkoi maintained in a closed system in the light exhibited an endogenous circadian rhythm in CO 2 compensation. The rhythm was sensitive to changes in light intensity and temperature. At 15~ it damped rapidly in light of 78 J m -2 s -1, but at 10~ a rhythm of c