Stability of soil algae Bracteacoccus minor var. Desertorum (Friedmann & Ocampo-Paus) to high temperature

The resistance of the strain ACKU 507-06 * Bracteacoccus minor var. desertorum (Friedmann & Ocampo-Paus) to high temperatures was studied. Temperature 58-70ºC caused cell death of B.minor var. desertorum. At temperature 54-56ºC 60-90% of cells died, at the same time some part of cells retained their morphological characteristics. At temperature 30-50ºC algae cells remained unchanged. With temperature increasing diameter of vegetative cells of B.minor var. desertorum decreased. It is established, B.minor var. desertorum was more resistant to the influence of high positive temperatures than Bracteacoccus minor (Chodat) Petrová, Xanthonema exile (Klebs) Silva (Xanthophyta).