A study on the conditions for infection of Holospora caryophila, a macronuclear symbiont of Paramecium biaurelia

摘要: Abstract The macronuclear symbiont of stock 562, Paramecium biaurelia , has been classified into a new genus, Holospora by previous authors. This is infectious via the external medium or micro-injection. long from agent. Various factors were investigated to enable maximum infection occur. These time exposure, concentration bacteria in homogenate purified preparations, following exposure before cells examined for life cycle stage treated cells, temperature at which was attempted and presence absence other particulate bodies. Infection caudatum, P. primaurelia tetraurelia achieved. no doubt due discovery role process. In particular, food vacuoles process using homogenates unfolded. can, however, be circumvented symbionts are also lost spontaneously re-infection can only occur under some conditions, example, when present with passage time. genes maintenance still unclear.