RT Journal Article SR Electronic A1 Stoyneva, Maya P. A1 Ingolić, Elisabeth A1 Gärtner, Georg A1 Vyverman, Wim T1 The pyrenoid ultrastructure in Oocystis lacustris. JF Fottea YR 2009 VO 9 IS 1 SP 149 OP 154 DO 10.5507/fot.2009.013 UL https://fottea.czechphycology.cz/artkey/fot-200901-0013.php AB The fine structure of vegetative cells of Oocystis lacustris has been studied with special attention to the ultrastructure of the pyrenoid and its starch sheath. The TEM-investigation showed that the pyrenoid matrix is homogenous, not traversed by thylakoids and the surrounding starch sheath is continuous, horseshoe-shaped or fragmented in 2 starch plates. This starch sheath structure is regarded as a common feature within Oocystis and closely related genera Eremosphaera and Neglectella.