Bibliographic Detail
Trainor, F.R. & McLean, R J. , 1964
Reference:
Trainor, F.R. & McLean, R J. (1964). A study of a new species of Spongiochloris introduced into sterile soil. American Journal of Botany 51: 57-60, 8 figs, 1 table.
Publication Date:
January 1964
Notes:
A new species of Spongiochloris, S. typica, was isolated from a Connecticut soil. It can be distinguished from other species by the presence of many pyrenoids; by the cell size of light-grown cells (up to 80 $\mu$), usually with thin walls; and by the vacuolate older cells. Zoospores present favorable material for observation of withdrawal of flagella upon quiescence. The organism was reintroduced into sterile soil, the soil was then air-dried, and the viability of the organism in soil was measured during 1 year. Each month, a 0.5-g sample of soil was heated at 100 C for 1 hr prior to incubation in basal medium; a control sample was incubated, along with the treated soil, in continuous illumination. By means of 10-fold dilutions of such cultures, it was determined that more than 10,000 cells per 0.5 g of soil survived heat pretreatment and more than 100,000 cells per 0.5 g were viable in the desiccated soil after 1 year.
