Plant and Cell Physiology, 1985, Vol. 26, No. 1 131-139
© 1985
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Subchloroplast Fractions from the Brown Alga Fucus serratus: Phosphatidylglycerol Contents
1 Laboratoire de Biologie Végétale, Université de Perpignan Avenue de Villeneuve, F66025 Perpignan Cedex France
2 Laboratoire de Cytophysiologie Végétale E.N.S., 24, rue Lhomond, F75231 Paris Cedex 05 France
Five pigment-protein complexes were isolated from digitonin-solubilized thylakoids of Fucus serratus using sucrose density gradient centrifugation. Two heavy fractions corresponded to PS I and PS II antennae with their active reaction-centers. A light fraction was identified as a light-harvesting antenna, while the two other fractions were not very well defined. The light-harvesting fractions contained the major part of the C16:1-trans-phosphatidylglycerol. The results are discussed and compared with those from Chl a/b plants taking into account the basic organization of brown alga chloroplasts.
(Received May 15, 1984; Accepted October 25, 1984)
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