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Plant Physiology 71:437-439 (1983) © 1983 American Society of Plant Biologists Enclosure of Mitochondria by Chloroplasts 1Department of Agronomy, University of Georgia, Athens, Georgia 30602, Richard B. Russell Agricultural Research Center, United States Department of Agriculture, Agricultural Research Service, Athens, Georgia 30613
In Panicum species of the Laxa group, some of which have characteristics intermediate to C3 and C4 photosynthesis species, some mitochondria in leaf bundle sheath cells are surrounded by chloroplasts when viewed in profile. Serial sectioning of leaves of one Laxa species, Panicum schenckii Hack, shows that these mitochondria are enclosed by chloroplasts. Complete enclosure rather than invagination also is indicated by absence of two concentric chloroplast membranes surrounding the mitochondrial profiles.
1 Supported by state and Hatch funds allocated to the Georgia Agricultural Experiment Stations and by the United States Department of Agriculture, Agricultural Research Service, under Cooperative Agreement No. 58-7B30-1-270.
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