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Tricarboxylic Acid Cycle Enzymes in Tetrahymena pyriformis after Infection of the Cockroach Periplaneta americana 1
Author(s) -
SEAMAN GERALD R.,
CLEMENT JACOB J.
Publication year - 1970
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1970.tb02371.x
Subject(s) - periplaneta , cockroach , tetrahymena pyriformis , biology , biochemistry , citric acid cycle , american cockroach , enzyme , succinate dehydrogenase , dehydrogenase , tetrahymena , ecology
SYNOPSIS. Activities of enzymes of the tricarboxylic acid cycle in extracts of Tetrahymena pyriformis S, axenically recovered after living in the hemocoel of female cockroaches Periplaneta americana for 48 hr, were compared with activities in ciliates not exposed to the cockroach. Malic dehydrogenase activity was depressed after recovery from the cockroach; isocitric and succinic dehydrogenases and α‐ketoglutaric oxidase activities were unchanged. Citrate synthetase activity was increased, and pyruvi oxidase activity decreased, after ciliates had been in the cockroach. These alterations persisted for several hundred generations after recovery from the insect.