Premium
EFFECTS OF IRON DEFICIENCY ON ISOCHRYSIS GALBANA (CHRYSOPHYCEAE) AND PHAEODACTYLUM TRICORNUTUM (BACILLARIOPHYCEAE) 1
Author(s) -
Glover Hilary
Publication year - 1977
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1977.tb02917.x
Subject(s) - phaeodactylum tricornutum , biology , isochrysis galbana , photosynthesis , chlorophyll , iron deficiency , glycine , serine , chlorophyll a , biochemistry , carotenoid , botany , algae , alanine , amino acid , food science , medicine , anemia , enzyme
Cultures of Isochrysis galbana Parks and Phaeodactylum tricornutum Bohlin were grown in iron‐limited chemostats. With increasing iron deficiency, photosynthetic rate per cell and assimilation number decreased. The pattern of photosynthesis was also altered; in Fe deficient cells the proportion of 14 C fixed in glycine and serine decreased with an accompanying increase into alanine after 3 min assimilation. Although there was no significant effect of Fe deficiency on the proportion of 14 C incorporated into total amino acids and amides, the percentage of total 14 C fixed in protein increased with increasing Fe deficiency. Cellular levels of chlorophyll a , carotenoids, cytochromes and protein also decreased with increasing Fe deficiency. However, the reduction in chlorophyll a/ cell was not as great as that of cytochrorne f 1 and Fe deficient cells therefore showed a marked increase in chlorophyll a:cytochrorne f 1 ratio.