By Prof. Dr. Rudolf Hagemann (auth.), K. Esser, U. Lüttge, W. Beyschlag, F. Hellwig (eds.)
With one quantity every year, this sequence retains scientists and complicated scholars knowledgeable of the most recent advancements and ends up in all components of the plant sciences.
The current quantity contains studies on genetics, telephone biology, body structure, comparative morphology, ecology and crops science.
Read Online or Download Progress in Botany: Genetics. Physiology. Ecology PDF
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Additional resources for Progress in Botany: Genetics. Physiology. Ecology
This mutant, according to Martinez-Zapater et al. (1992), does not primarily affect the plastome, but causes rearrangements of the mitochondrial genome. Therefore the possibility was discussed that this primary action on mitochondria may also be true for other genes causing "gene-induced plastome mutations". At present, however, this remains an open question. 7 The Path into Molecular Genetics of Plastids A very important new era of plastid genetics began in the years 19621964. This time period marks the opening ofthe field of molecular genetics of plastids.
Together with D1, the D2 protein forms a heterodimer which binds most of the cofactors for charge separation in photosystem II, and thus represents the main part of the reaction center of photosystem II. The Cterminus of D2 is highly conserved and obviously plays an important functional role. Its mutational change in the plastome mutant en:alba-4 severely impairs the function of photo system II (Schaffner 1995; Hagemann et al. 1996). Studies with mutants of Pelargonium zonale were performed in parallel and in comparison to the Antirrhinum mutants.
In addition trans-acting factors play an important role in the editing process (Bock and Koop 1987; Chaudhuri and Maliga 1996). Presumably, the essential upstream cis-sequence element serves as binding site for a trans-acting factor. These studies on RNA editing in plastids are also relevant to RNA editing in plant mitochondria, in which many similar investigations are performed; both systems seem to have many molecular features in 40 Review common. Detailed studies on RNA editing processes in mammals have already led to stimulating insights into the participating enzymatic activities and the molecular structure of the editing complex termed "editosome" (Maas and Rich 2000).