Origin of Thylakoid Membranes in Chlamydomonas reinhardtii y-1 at 38°C

Autor:	Paavola Lg, Hoober Jk, Boyd Co
Rok vydání:	1991
Předmět:	Photosystem II Physiology food and beverages Chlamydomonas reinhardtii Plant Science Biology biology.organism_classification Chloroplast membrane Chloroplast chemistry.chemical_compound Membrane chemistry Biochemistry Chlorophyll Thylakoid Genetics Biophysics Photosystem
Zdroj:	Plant Physiology. 96:1321-1328
ISSN:	1532-2548 0032-0889
DOI:	10.1104/pp.96.4.1321
Popis:	The origin of thylakoid membranes was studied in Chlamydomonas reinhardtii y-1 cells during greening at 38°C. Previous studies showed that, when dark-grown cells are exposed to light under these conditions, the initial rates of accumulation of chlorophyll and the chlorophyll a/b-binding proteins in membranes are maximal (MA Maloney JK Hoober, DB Marks [1989] Plant Physiol 91: 1100-1106; JK Hoober MA Maloney, LR Asbury, DB Marks [1990] Plant Physiol 92: 419-426). As shown in this paper, photosystem II activity, which was nearly absent in dark-grown cells, also increased at a linear rate in parallel with chlorophyll. As compared with those made at 25°C, photosystem II units assembled during greening at 38°C were photochemically more efficient, as judged by saturation at a lower fluence of light and a negligible loss of excitation energy as fluorescence. Electron microscopy of cells in light for 5 or 15 minutes at 38°C showed that these initial, functional thylakoid membranes developed in association with the chloroplast envelope.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::76b6a0c230a3eac73918b9d75b638b90 https://doi.org/10.1104/pp.96.4.1321 Zobrazit plný text záznamu