NDLI: Population density and size of bacteria in the course of cultivation of their small forms

Content Provider	Springer Nature Link
Author	Polyanskaya, L. M. Gorodnichev, R. B. Vorob’eva, E. A. Zvyagintsev, D. G.
Copyright Year	2015
Abstract	The population density, size, and biomass of the soil bacteria from a mountain meadow-steppe soil of Tajikistan and a light sierozem of the Negev Desert have been analyzed using the method of “cascade” filtration. It was shown that, when cultivating small fractions of soil bacteria, the total number of bacteria increased by 1.5 times and the bacterial size became greater. The number of coarse cells with a size of 1.85 and 0.43 μm essentially increased in both soils. If the contribution of these fractions was about 10–20% in the initial soils, it increased up to 50–60% in the incubated filtrates. The cells with a size of 0.38 and 0.23 μm accounted for about 70% of the total bacteria in the initial soils, while, in the incubated filtrates, the share of 0.23 μm cells composed about 30% in the filtrate and that of 0.38 μm cells reached 45–50% in the filtrate. The average diameter of the bacteria increased from 0.4 to 0.8–0.9 μm; the biomass of bacteria in these filtrates increased by 7–8 times in comparison with the initial soils at the expense of an increasing number of large cells after cultivation.
Starting Page	395
Ending Page	399
Page Count	5
File Format	PDF
ISSN	10642293
Journal	Eurasian Soil Science
Volume Number	48
Issue Number	4
e-ISSN	1556195X
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-04-15
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mollic Leptosols Haplic Calcisols (Endosalic, Yermic) bacteria cell size cultivation biomass Geotechnical Engineering & Applied Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Soil Science

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