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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 7746

Janina Kaczanowska and Jerzy Moraczewski; Stimulation of Phagocytosis and Autophagy in the Ciliate Chilodonella steini. Protistologica XXI(2):175-185, 1985

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The herbivorous ciliata Chilodonella steini, in its immature period and in a permanent selfing phase may cease feeding in the presence of the available food and tend to disperse. Starving cells may be stimulated anew with fresh food but their capacity to uptake particles is limited. Starving cells of different kinds, i.e. prestarved cells, non-feeding immature cells which stopped feeding in the presence of food, and non-feeding cells involved in sexual activity, form autophagolysosomes. Through manipulation with the feeding regimes, the stimulation of phagocytosis and phagocytic activity itself are dissociated. It is assumed that autophagy interferes with the rate of phagocytosis possibly due to a sequestration of some cellular components used in both digestive pathways.