Spore germination in strains of Dictyostelium discoideum and other members of the Dictyosteliaceae.

Abstract:

:Spores of all strains of Dictyostelium discoideum tested in this study germinated after a heat shock of 45 C for 30 min. Whereas the strains differed in their rates of germination, the rate for each strain was constant. A correlation existed between the rate of germination and the rate of vegetative growth when spores were inoculated into bacterial streaks. Heat shock clearly increased spore germination in D. purpureum, but the response was less dramatic than in D. discoideum. Enhancement also occurred in D. rosarium, but only in media containing peptone. Strains of D. mucoroides gave varied responses, and these could be divided into those which required mutrients for spore germination and those which did not. The spores of Polysphondylium pallidum were resistant to mild heat (45 C), but were not activated; peptone was required for germination. In contrast, the microcysts of this species were heat-labile and required no added nutrients for excystment.

journal_name

J Bacteriol

journal_title

Journal of bacteriology

authors

Cotter DA,Raper KB

doi

10.1128/JB.96.5.1690-1695.1968

subject

Has Abstract

pub_date

1968-11-01 00:00:00

pages

1690-5

issue

5

eissn

0021-9193

issn

1098-5530

journal_volume

96

pub_type

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