We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
ELECTRON MICROSCOPY OF MEMBRANOUS BODIES AND GENOPHORE IN CHLOROPLASTS OF <em>BOTRYOCLADIA BOTRYOIDES</em> (RHODYMENIALES, RHODOPHYTA).
- Authors
Tripodi, Giacomo; Gargiulo, Gaetano M.; de Masi, Flora
- Abstract
An ultrastructure study on the chloroplasts of the red alga Botryocladia botryoides (Wulfen) J. Feldmann has been carried out to investigate the morphology of globular membranaous bodies (MBs) located between thylakoids. These membranous bodies show an electron dense lumen, in which a pair of denser cores occasionally occurs. The lumen is electron transparent in the chloroplasts of vacuolized, non-dividing cells. The surface of MBs is in contact with the fibrils representing the plastidial genophore; the fibrils sometimes bridge the surface of MBs with the nearest thylakoid. In some planes of section a membranous stalk connecting a MB with thylakoids has been made evident. Because the presence of similar bodies in chloroplasts and mitochondria of other red algae, as well as in mitochondria of yeast in which an intense synthesis of DNA occurs, the authors propose that MBs in red algae have a role in the replication of the genophore.
- Subjects
CHLOROPLASTS; ULTRASTRUCTURE (Biology); RED algae; ELECTRON microscopy; RHODYMENIALES; THYLAKOIDS
- Publication
Journal of Phycology, 1986, Vol 22, Issue 4, p560
- ISSN
0022-3646
- Publication type
Article
- DOI
10.1111/j.1529-8817.1986.tb02504.x