Abstract
Summary Endocyanelles in the rhizopod Paulinella chromatophora Lauterb. were examined under a light microscope complemented by DAPI fluorescent staining. They resemble the cyanobacterium Synechococcus elongatus (Nag.) Nag. f. thermalis Geitl., of 14 examined species of the genus Synechococcus . They both have a similar size, the mode of cell division as well as the shape and structure of nucleoid. These findings confirm Pascher's (1929 b) suggestion that these endocyanelles belong to the genus Synechococcus Nag. The rhizopod contains 2-6 blue-green sausage-shaped endocyanelles (3-4 × 16-18μm). They divide by invagination of the cell wall, upright to the long axis of the cyanelle, into almost equal parts. After DAPI staining, the central part of the cyanelles (nucleoids) emits intensive bluish fluorescence (as does the nucleus of the rhizopod). The fluorescence disappears after DNAse treatment, which proves the presence of DNA in DAPI-stained material in cyanelles.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
