MORPHOLOGICAL ANALYSIS OF AEROBIC MICROORGANISMS IN DEEP-DRILLING CORE SAMPLES FROM LAKE BAIKAL
I. S. Andreeva, E. I. Ryabchikova, N. I. Pechurkina, B. N. Zaitsev, V. F. Geletii, E. D. Korobushkina, T. P. Vinogradova, T. Torok, J. Hunter-Cevera, and V. E. Repin
Keywords: Baikal Rift Zone, drilling, bottom sediments, ancient microorganisms, cells ultrastructure
Pages: 220-230
Abstract
Microorganisms of the Baikal Rift are of peculiar interest owing to their isolated evolution and the ancient origin of Lake Baikal. Samples of rocks sedimented at various stages of the Baikal Rift development have been obtained by drilling. Based on microbiological examination of bottom samples from the Baikal basin, a collection of more than 2200 microbial isolates was made. They include the genera Micrococcus, Staphylococcus, Bacillus, and Nocardia; numerous nonsporogenous cocci and bacilli with well-pronounced capsules; fast-moving Gram-negative rods, assigned to pseudomonads; sessile Gram-negative cells, actinomycetes, and yeast. The eukaryotes of the ground samples also contain mold fungi.
The morphological features were studied by light microscopy of colored microbial cells and using scanning and transmission microscopes.
|
