Affiliation:
1. The University of Texas, Marine Science Institute, Port Aransas, Texas 78373
2. Microbiology Department, The University of Texas at Austin, Texas 78712
Abstract
A unicellular blue-green alga,
Agmenellum quadruplicatum
, and a filamentous blue-green alga,
Lyngbya lagerheimíi
, were grown heterotrophically in dim light with glucose as major source of carbon and possibly energy. The dim-light conditions did not support autotrophic growth. The two blue-green algae appeared to have the same metabolic block, namely an incomplete tricarboxylic acid cycle, as has been found in other obligately phototrophic blue-green algae. Under dim-light conditions, glucose made a greater contribution to cell constituents (amino acids) of
A. quadruplicatum
and
L. lagerheimii
than under high-light conditions.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
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