Advances in Photosynthesis Research pp 805-808 | Cite as
Phytochrome Localization in Chloroplasts
Abstract
The involvement of phytochrome in the control of chloroplast development has been well established. It has been demonstrated at the level of chloroplast enzyme synthesis (Withrow et al. 1956) and at the ultrastructural level (Mego, Jagendorf 1961). The last authors showed that development of plastids in darkness can be stimulated by the active form of phytochrome. Wellburn and Wellburn (1973) found that this phytochrome control is not limited to intact tissue but also occurs in isolated etioplasts. These authors explained the autonomy of the plastids in photomorphogenesis by assuming the presence of phytochrome in the plastids or in the chloroplast envelope. Evans (1976) detected phytochrome spectrophotometrically in a purified chloroplast suspension. Assignments of phytochrome presence to definite cellular compartments based on spectrophotometry of isolated cell fractions have been subjected to criticism (Quail,Gressel 1976; Pratt 1978).
Keywords
Bundle Sheath Cell Chloroplast Envelope Light Grown Seedling Chloroplast Suspension Green ChloroplastPreview
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