caa a22 4500 46579033X CHVBK 20180323112022.0 cr unu---uuuuu 170327e19900501xx s 000 0 eng 10.1007/BF02017175 doi (NATIONALLICENCE)springer-10.1007/BF02017175 The role of secreted acid hydrolases in the utilization of complex nutrients by Tetrahymena [Elektronische Daten] [Jorge Florin-Christensen, Monica Florin-Christensen, Arno Tiedtke, Leif Rasmussen] In an attempt to extend our knowledge of the biology of feeding of the ciliateTetrahymena thermophila, this organism was grown axenically on complex organic material. The nutrient substrate was based on autoclaved wheat grains and adjusted to either pH 5.5 or 7.5. In wild type cultures the cells grew and multiplied only under acidic conditions. In cultures of a mutant cell line blocked in the secretion of acid hydrolases the cells did not grow at either pH value. Thus released acid hydrolases may play a key role in the utilization of complex nutrients in combination with uptake of small organic molecules. Mechanisms in the feeding biology ofTetrahymena thermophila andParamecium tetraurelia are compared. Springer-Verlag New York Inc., 1990 Florin-Christensen Jorge Center of Parasite and Vector Research, National University of La Plata, Argentina aut Florin-Christensen Monica Center of Parasite and Vector Research, National University of La Plata, Argentina aut Tiedtke Arno Institute of Zoology, University of Münster, FRG aut Rasmussen Leif Institute of Anatomy and Cytology, Odense University, 5230, Odense, Denmark aut Microbial Ecology Springer-Verlag 19/3(1990-05-01), 311-316 0095-3628 19:3<311 1990 19 248 https://doi.org/10.1007/BF02017175 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02017175 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Florin-Christensen Jorge Center of Parasite and Vector Research, National University of La Plata, Argentina aut NATIONALLICENCE 700 1- Florin-Christensen Monica Center of Parasite and Vector Research, National University of La Plata, Argentina aut NATIONALLICENCE 700 1- Tiedtke Arno Institute of Zoology, University of Münster, FRG aut NATIONALLICENCE 700 1- Rasmussen Leif Institute of Anatomy and Cytology, Odense University, 5230, Odense, Denmark aut NATIONALLICENCE 773 0- Microbial Ecology Springer-Verlag 19/3(1990-05-01), 311-316 0095-3628 19:3<311 1990 19 248 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer