Труды сотрудников ИВМ СО РАН

[Text] / N. S. Pechurkin [et al.] // Microbiology. - 1997. - Vol. 66, Is. 4. - P461-465. - Cited References: 9 . - ISSN 0026-2617РУБ Microbiology

Аннотация: The influence of two rhizosphere bacteria-Pseudomonas fluorescens and Pseudomonas putida-on the growth of wheat seedlings was studied under conditions of complete mineral supply and nitrogen deficiency in the medium. On complete mineral medium, the plants that developed from the seeds inoculated with the pseudomonads had some advantages for growth over those developed from the non-inoculated seeds. Inoculated plants showed an increased transpiration and a higher content of organic nitrogen in their biomass. Under conditions of nitrogen deficiency in the medium, no differences were found between inoculated and noninoculated plants. No competition for the nitrogen sources was revealed between the bacteria and plants; the development of the rhizosphere bacteria was limited by the rate of organic compound excretion by plant roots. The stimulatory effect produced on plant growth by the rhizosphere bacteria was shown to vary depending on the environmental factors.

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Держатели документа:
RUSSIAN ACAD SCI,CTR COMP,KRASNOYARSK,RUSSIA
ИВМ СО РАН
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
State Agrarian University, Russian Federation
Computing Center, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Pechurkin, N.S.; Somova, L.A.; Polonskii, V.I.; Pisman, T.I.; Sarangova, A.B.; Polonskaya, D.E.; Sadovskaya, G.M.; Садовская, Галина Михайловна

/ L. A. Somova [et al.] // Advances in Space Research. - 1997. - Vol. 20, Is. 10. - P1939-1943 . - ISSN 0273-1177
Аннотация: The effect has been studied of inoculation of seeds of wheat with two species of rhizospheric microorganisms, -Pseudomonas fluorescens and Pseudomonas putida - on young plant growth with complete and with nitrogen deficit mineral nutrition. With complete mineral medium, plants grown from seeds inoculated with bacteria of Pseudomonas genus (experiment plants) have been found to have better growth over plants not inoculated with these bacteria (control plants). The experiment plants had increased transpiration and their biomass had higher organic nitrogen content. With nitrogen deficit medium, the plants inoculated with bacteria and those without them, have not revealed changes in growth. Neither case demonstrated competition of microorganisms with plants for nitrogen sources. В© 1997 COSPAR. Published by Elsevier Science Ltd.

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Держатели документа:
Institute of Biophysics, Krasnoyarsk 6600036, Russian Federation
CEA-Sciences du Vivant, DEVM, CEA/Cadarache, Saint-Paul-Lez-Durance Cedex, France
Computing Center Russian, Krasnoyarsk 6600036, Russian Federation
ИВМ СО РАН
ИБФ СО РАН

Доп.точки доступа:
Somova, L.A.; Pechurkin, N.S.; Polonsky, V.I.; Pisman, T.I.; Sarangova, A.B.; Andre, M.; Sadovskaya, G.M.; Садовская, Галина Михайловна

/ A. D. Aponasenko, L. A. Shchur // Microbiology. - 2016. - Vol. 85, Is. 2. - P243-248, DOI 10.1134/S0026261716020028 . - ISSN 0026-2617
Аннотация: Quantitative ratios of the biomasses of bacterio- and phytoplankton, interrelation of their production characteristics, and association of the functional characteristics with environmental factors were studied for Lake Khanka, the Yenisei River, and the Krasnoyarsk Reservoir. The ratio between the biomasses of bacterioplankton (Bb) and phytoplankton (Bp) in these water bodies was shown to vary within the range exceeding three orders of magnitude. Bacterioplankton biomass was relatively stable and varied from sample to sample by an order of magnitude. In more than 50% of the samples (total sample number, 495), bacterioplankton biomass exceeded that of the phytoplankton. The average Bb/Bp ratios for Lake Khanka, Yenisei River, and Krasnoyarsk Reservoir were 5.1, 2, and 1.4, respectively. Increased Bb/Bp ratios were found to correlate with elevated specific (per unit biomass) phytoplankton production. This finding indicated additional supply of biogenic elements to phytoplankton due to their recycling by bacterial communities. The ratio between bacterioplankton and phytoplankton production for Lake Khanka varied from year to year (0.07 to 0.76). For the Yenisei River and the Krasnoyarsk Reservoir these ratios were on average 0.19 and 0.27, respectively. According to the literature data for other water bodies, bacterial production may reach from 10 to over 100% of the primary production. The equilibrium density of bacterioplankton (maximal density of the population) in Lake Khanka was ~1.5 times higher than in the Yenisei River and the Krasnoyarsk Reservoir due to higher content of suspended mineral matter and associated organo-mineral detritus in the lake. The interaction between dissolved organic compounds sorbed on the surface of mineral particles results in chemical alteration of biochemically stable substrate into compounds which may be assimilated by aquatic microorganisms. © 2016, Pleiades Publishing, Ltd.

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Держатели документа:
Institute of Computational Modelling, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aponasenko, A. D.; Shchur, L. A.