Structure and Function of the Genetic Information in Plastids
| Autor: | Th. Börner, K. Timofeev, F.H. Herrmann, D. Matorin, R. Hagemann, Rubin Ab |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
Photosystem II
Pelargonium zonale ved/biology fungi ved/biology.organism_classification_rank.species Mutant food and beverages macromolecular substances General Medicine General Chemistry Biology Photosystem I Photosynthesis biology.organism_classification Antirrhinum majus Botany Biophysics Light emission Plastid |
| Zdroj: | Biochemie und Physiologie der Pflanzen. 165:393-400 |
| ISSN: | 0015-3796 |
| DOI: | 10.1016/s0015-3796(17)30979-4 |
| Popis: | Summary The primary reactions of photosynthesis in pale green mutant plastids of the plastom mutants, en : viridis-1 of Antirrhinum majus and en : gil-1 (“Mrs. Pollock”) of Pelargonium zonale have been studied by biochemical and biophysical methods. The en : viridis-1 plastids of Antirrhinum are not able to reduce the Hill-oxydant DPIP indicating a defect in photosystem II. The measurement of DLE (delayed light emission) shows a strongly reduced activity of photosystem II. However, the activity of photosystem I is entirely normal in this mutant. In accordance with this result, the ESR-signal (electron spin resonance) assigned to P 700 is present as normal. –In the greenish en : gil-1 plastids of Pelargonium a normal, distinct DLE could be detected indicating the normal function of photosystem II. A defect in photosystem I is shown by the absence of light induced short-lived ESR-signals. The defects in mutant plastids of the plastom mutants en : viridis-1 of Antirrhinum and en : gil-1 of Pelargonium are caused by mutations of the plastid DNA. Thus, the results obtained suggest that the plastid DNA controls particular reactions in both photosystem I and photosystem II. |
| Databáze: | OpenAIRE |
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