Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-08T08:32:31.885Z Has data issue: false hasContentIssue false

The role of the cytoskeleton in brown algal physode movement

Published online by Cambridge University Press:  01 August 1999

MONICA E. A. SCHOENWAELDER
Affiliation:
Department of Biological Sciences, Monash University, Clayton, 3168, Victoria, Australia
MARGARET N. CLAYTON
Affiliation:
Department of Biological Sciences, Monash University, Clayton, 3168, Victoria, Australia
Get access

Abstract

Phenolic compounds, packaged within vesicles known as physodes, are a major cytoplasmic constituent of eggs and zygotes of the Australasian fucoid Hormosira banksii. Physode movement in early life stages of Hormosira is described. We have used the cytoskeletal inhibitors cytochalasin B, latrunculin B and nocodazole added during different stages of development to investigate the role of the cytoskeleton in movement of these vesicles to regions of active wall formation in the growing rhizoid tip and the plane of cytokinesis prior to cell division. Actin inhibition prevented polarization, cross-wall formation and physode movement. When microtubules were disrupted polarization was still possible, but cross-wall formation and physode movement were prevented. Both actin microfilaments and microtubules are necessary to move physodes to regions of accumulation and active wall formation.

Type
Research Article
Copyright
© 1999 British Phycological Society

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)