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Production of a Male‐Inducing Hormone by a Parthenosporic Volox aureus *
Author(s) -
DARDEN WILLIAM H.
Publication year - 1968
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.1550-7408.1968.tb02149.x
Subject(s) - hormone , staphylococcus aureus , strain (injury) , mechanism (biology) , biology , medicine , endocrinology , bacteria , anatomy , genetics , philosophy , epistemology
SYNOPSIS. Male production in the M5 strain of Volvox aureus is controlled by a diffusible hormone. A new strain of V. aureus , DS, is described whose control mechanism for male production is deficient. DS forms males very rarely despite production of a fully functional male‐inducing hormone, M5 colonies serving as testers. The DS and M5 hormones were both non‐dialyzable, and both were > 50% inactivated when kept at 60 C for 30 min.