New ultrastructural features of organelles in leaf cells of Deschampsia antarctica Desv |
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| Authors: | Irena Gielwanowska Ewa Szczuka |
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| Affiliation: | (1) Department of Plant Physiology and Biotechnology, University of Warmia and Mazury, Oczapowskiego 1A, 10-719 Olsztyn, Poland;(2) Department of Antarctic Biology, Polish Academy of Sciences, Ustrzycka 10/12, 02-141 Warsaw, Poland;(3) Department of Plant Anatomy and Cytology, Maria-Curie Skodowska University, Akademicka 19, 20-033 Lublin, |
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| Abstract: | An electron microscope has been used to investigate the ultrastructure of leaf cells in Deschampsia antarctica Desv. (Poaceae). The leaf anatomy exhibits features typical of xerophytes. New ultrastructural features were found in mesophyll cells. Chloroplasts in mesophyll cells of D. antarctica leaves form small vesicles and pockets. The outer chloroplast membrane forms vesicles, and pockets are invaginations of both membranes. The invaginations contain small vesicles, mitochondria, or lipid droplets. The mitochondria or peroxisomes adhere very tightly to the chloroplasts. |
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