Morphogenesis in the red alga,Griffithsia pacifica: Regeneration from single cells

✍ Scribed by Ellen C. S. Duffield; Susan Drury Waaland; Robert Cleland

• Publisher: Springer-Verlag
• Year: 1972
• Tongue: English
• Weight: 569 KB
• Volume: 105
• Category: Article
• ISSN: 0032-0935
• DOI: 10.1007/bf00385390

✦ Synopsis

The regeneration of plants of the red alga Gri//ithsia paci/ica from single, isolated cells is described. Regeneration can start from any cell and is triggered by the removal of an abutting cell. An isolated, single shoot cell forms a shoot and a rhizoidal cell within one day. The shoot then adds new cells by apical division at the rate of 1-2 cells/day; branches are formed at predictable but not fixed locations by budding of subapical cells. Each shoot cell enlarges for 6-8 days. The resulting plant consists of uniseriate, pseudodichotomously-branched shoot filaments with multicellular rhizoidal filaments at their base. The predictability and rapidity of this development combined with the large size of these cells (1.0 • 0.2 ram) facilitate developmental studies on this organism.