Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

[Text] / O. V. Menyailo, W. R. Abraham, R. . Conrad // Soil Biol. Biochem. - 2010. - Vol. 42, Is. 1. - P101-107, DOI 10.1016/j.soilbio.2009.10.005. - Cited References: 50. - We thank Esther Surges for the isotope ratio measurements, Svetlana Dedysh and Peter Frenzel for discussion of the data. The funding was provided by the Alexander von Humboldt Foundation, Marie Curie Fellowship and by the Russian President Award for best professors awarded to OVM. . - 7. - ISSN 0038-0717РУБ Soil Science

Аннотация: Plant species exert strong effects on ecosystem functions and one of the emerging, and difficult to test hypotheses, is that plants alter soil functions through changing the community structure of soil microorganisms. We tested the hypothesis for atmospheric CH4 oxidation by using soil samples from a Siberian afforestation experiment and exposing them to C-13-CH4. We determined the activity of the soil methanotrophs under different tree species at three levels of initial CH4 concentration (30, 200 and 1000 ppm) thus distinguishing the activities of low- and high-affinity methanotrophs. Half of the samples were incubated with C-13-enriched CH4 (99.9%) and half with C-12-CH4. This allowed an estimation of the amount of C-13 incorporated into individual PLFAs and determination of PLFAs of methanotrophs involved in CH4 oxidation at the different CH4 concentrations. Tree species strongly altered the activity of atmospheric CH4 oxidation without appearing to change the composition of high-affinity methanotrophs as evidenced by PLFA C-13 labeling. The low diversity of atmospheric CH4 oxidizers, presumably belonging to the UCS alpha group, may explain the lack of tree species effects on the composition of soil methanotrophs. We submit that the observed tree species effects on atmospheric CH4 oxidation indicate an effect on biomass or cell-specific activities rather than by a community change and this may be related to the impact of the tree species on soil N cycling. (C) 2009 Elsevier Ltd. All rights reserved.

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Держатели документа:
[Menyailo, Oleg V.] SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Menyailo, Oleg V.
Conrad, Ralf] Max Planck Inst Terr Microbiol, D-35043 Marburg, Germany
[Abraham, Wolf-Rainer] Helmholtz Ctr Infect Res, D-38124 Braunschweig, Germany

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Menyailo, O.V.; Abraham, W.R.; Conrad, R...

/ N. V. Semenova, V. N. Shmakov, M. E. Park [и др.] // Biol. Membr. - 2020. - Vol. 37, Is. 3. - С. 215-223, DOI 10.31857/S0233475520020127. - Cited References:41 . - ISSN 0233-4755РУБ Cell Biology

Аннотация: It was found that glycerides were dominant for both types of cell lines. It was found that triglycerides (TG) and 1,2-diglycerides (1,2-DG) accumulated 1.5-3 times more actively in embryogenic cell lines, which was probably connected with the necessity of the involvement of TG and 1,2-DG in the processes of tissue differentiation. A high relative content of free fatty acids (FFA) was also characteristic of the embryogenic lines. The found differences in the ratio of sterols to their ethers (the content of sterol esters was 1.5-3 times lower in embryogenic cell lines) can indicate that sterols get activated from their inert form to contribute to the embryogenesis processes at a stage of embryo formation.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Siberian Inst Plant Physiol & Biochem, Irkutsk 664033, Russia.
Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Semenova, N., V; Shmakov, V. N.; Park, M. E.; Tretyakova, I. N.; Konstantinov, Yu M.; Dudareva, L., V