Main Content

The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 3351

Janine Dupy-Blanc, Claude-Alain Groliere, Rached Berrada, and Lucien David; [Action Comparee de deux Antibiotiques Ionophores (Nigericine et Epinigericine) sur les Teneurs en ADN Macronucleaire du Cilie Tetrahymena pyriformis GL, en Culture Synchrone]. Europ.J.Protistol. 24(2):138-144, 1989

Reprint

In File

Notes

Antibiotics (30 mg/l) added at T 60 mn. lead, in a part of the population, to an increase of the macronuclear DNA content resulting from DNA activity during a phase S2 which begins after the phase G2. The largest cells have the highest DNA content and the longest generation time. The results are confirmed by autoradiography with tritiated thymidine. The percentage of macronuclear labelling increases from T 150 to a maximum at T 180, and it is greater with nigericin (46%) than with epinigericin (37%). Thus, epinigericin is less toxic than nigericin.