ISSN:
1573-5176
Keywords:
Gracilaria cornea
;
Gracilaria tikvahiae
;
Ulva lactuca
;
epiphyte attachment
;
red algal cell wall
;
algal cuticle
;
decklamelle
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Use of light, transmission, and scanning electronmicroscopes revealed that the epidermal cell wall ofthe red algal agarophytes Gracilaria tikvahiaeMcLachlan and G. cornea J. Agardh consists of adecklamelle and outer and inner wall layers. The twospecies differed, with G. cornea having asignificantly thicker outer wall and a more diffusedecklamelle. After induction, the zooids of Ulvalactuca would attach to glass slides and the twospecies of Gracilaria via an adhesion pad. Within a few days, 3–5 celled germlings penetrated thedecklamelle and outer wall layer of both basiphytes. By the time the epiphyte germlings reached the 15celled stage, they had penetrated the inner walllayer. The differences in epidermal cell wallconstruction between the two basiphytes may play arole in the ability of zooids of U. lactuca toattach in nature where epiphytization of G.cornea is infrequent.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1026501613984
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