Криосфера Земли, 2019, Том XXIII, № 6, с. 27-36

МИКРООРГАНИЗМЫ ВЕЧНОЙ МЕРЗЛОТЫ В КОСМИЧЕСКОМ ПРОСТРАНСТВЕ: РЕЗУЛЬТАТЫ ЭКСПЕРИМЕНТА “ЭКЗОБИОФРОСТ”

Е.М. Ривкина, Е.В. Спирина, А.В. Шатилович, Л.А. Шмакова, А.А. Абрамов

Институт физико-химических и биологических проблем почвоведения РАН,
142290, Пущино, Московская обл., ул. Институтская, 2, Россия; elizaveta.rivkina@gmail.com

The results of the “Exobiofrost” experiment aboard the BION-M1 biosatellite showed that the impact of space flight factors (ionizing radiation, g-force, and temperature fluctuations) did not lead to complete sterilization of the permafrost samples. According to the Post-flight analysis, a significant part of the bacterial community has remained viable after the space experiment. A comparison with control samples showed that modern tundra colpodas are more resistant to the effects of space conditions, than representatives of ancient permafrost, and that Colpoda steinii strains are more resistant than ciliates of the Exocolpoda augustini species. The greatest resistance to space flight conditions demonstrated by acanthamoeba cysts (Acanthamoeba sp.) allows to view them as model organisms for both the Earth and space experiments in future.

Permafrost, microorganisms, outer space

DOI: 10.21782/KZ1560-7496-2019-6(27-36)