| | 1 | Author
| Jack Dekker, RonaldG. Burmester | Requires cookie* | | | Title
| Differential Pleiotropy in a psbA Gene Mutant of Brassica napus Implies Altered Temporal Photosynthesis and Thermal Tolerance  | | | | Abstract
| Studies were conducted to test the hypothesis that the mutation to the psbA. plastid gene that confers s-triazine resistance (R) also results in an altered diurnal pattern o f photosynthetic car bon reduction (CER) relative to that o f the susceptible (S) wild-type. In all experiments CER approximated the increasing and decreasing light levels during the diurnal. S C ER exceeded that o f R during the midday period, but R CER was greater early and late in the diurnal at 25 °C. R CER exceeded that o f S for most o f the diurnal at 35 °C and in older, crowded, nitrogen-starved plants. These studies support the stated hypothesis and indicate a more complex model o f photosynthetic productivity than previously observed. An assessment o f the photosynthetic competence o f either biotype may be a function o f the time o f day or the environmental condi tions the plants are exposed to, especially temperature. | | | |
Reference
| Z. Naturforsch. 45c, 474 (1990); received October 18 1989 | | | |
Published
| 1990 | | | |
Keywords
| Photosystem II, D -l Protein, Electron Transport, C hronobiology, Diurnal Rhythms | | | |
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| default:Reihe_C/45/ZNC-1990-45c-0474.pdf | | | | Identifier
| ZNC-1990-45c-0474 | | | | Volume
| 45 | |
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