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

: сборник научных трудов / H. Santruckova, O. B. Shibistova // Tree species effects on soils: implications for global change. - 2005. - С. 229-246. - Библиогр. в конце ст.
Аннотация: Microbial parameters derived from the short-term Michaelis-Menten type model are tested and applied on the ecosystem study Soil dried immediately after sampling and stored at 4 graduate C was moistened to 60% water holding capacity and CO2 production was measured (GC) after 24 h (respiration response to water supply, Vds). The glucose was added into the soil and CO2 production was measured 16 to 24 h later (maximum respiration, Vmax). Substrate saturation kinetics of respiration was measured after addition of glucose in 6 different concentrations. Soil heterotrophic respiratory potential was expressed as Vds/Vmax ratio; biologically available C (ACbr) and potential flush of the biologically available C (ACds/ACbr) was estimated using Michaelis-Menten type model. After moistening of the soils, extra C is released, the amount of which is characteristic for the given soil. Application pf the short-term kinetic approach on the upper soil layer of various ecosystems (Western Canada, Central Siberia transect).

Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28

Доп.точки доступа:
Santruckova, H.; Сантрукова Н.; Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна
Имеются экземпляры в отделах:
РСФ (13.03.2007г. (1 экз.) - Б.ц.) - свободны 1

[Text] / J. . SUOMELA, V. . OSSIPOV, E. . HAUKIOJA // J. Chem. Ecol. - 1995. - Vol. 21, Is. 10. - P1421-1446, DOI 10.1007/BF02035143. - Cited References: 81 . - 26. - ISSN 0098-0331РУБ Biochemistry & Molecular Biology + Ecology

Аннотация: Leaf quality of the mountain birch (Betula pubescens ssp. tortuosa) for herbivores was studied at several hierarchical levels: among trees, among ramets within trees, among branches within ramets, and among short shoots within branches. The experimental units at each level were chosen randomly. The indices of leaf quality were the growth rate of the larvae of a geometrid, Epirrita autumnata, and certain biochemical traits of the leaves (total phenolics and individual phenolic compounds, total carbohydrates and individual sugars, free and protein-bound amino acids). We also discuss relationships between larval growth rate and biochemical foliage traits. Larval growth rates during two successive years correlated positively at the level of tree, the ramet, and the branch, indicating that the relationships in leaf quality remained constant between seasons both among and within trees. The distribution of variation at different hierarchical levels depended on the trait in question. In the case of larval growth rate, ramets and short shoots accounted for most of the explained variation. In the case of biochemical compounds, trees accounted for most of the variance in the content of total phenolics and individual low-molecular-weight phenolics. In the content of carbohydrates (total carbohydrates, starch, fructose, glucose, and sucrose) and amino acids, variation among branches was generally larger than variation among trees. Variation among ramets was low for most compounds. No single leaf trait played a paramount role in larval growth. Secondary compounds, represented by phenolic compounds, or primary metabolites, particularly sugars, may both be important in determining the suitability of birch leaves for larvae. If phenols are causally more important, genet-specific analyses of foliage chemistry are needed. If sugars are of primary importance, within-genet sampling and analysis of foliage chemistry are necessary.

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Держатели документа:
TURKU UNIV,KEVO SUBARCTIC RES STN,SF-20500 TURKU,FINLAND
INST FOREST,KRASNOYARSK 660036,RUSSIA

Доп.точки доступа:
SUOMELA, J...; OSSIPOV, V...; HAUKIOJA, E...

[Text] / B. . Wild [et al.] // Soil Biol. Biochem. - 2014. - Vol. 75. - P143-151, DOI 10.1016/j.soilbio.2014.04.014. - Cited References: 47. - This study was funded by the Austrian Science Fund (FWF) as part of the International Program CryoCARB (Long-term Carbon Storage in Cryoturbated Arctic Soils; FWF - I370-B17). . - ISSN 0038-0717РУБ Soil Science

Аннотация: Rising temperatures in the Arctic can affect soil organic matter (SOM) decomposition directly and indirectly, by increasing plant primary production and thus the allocation of plant-derived organic compounds into the soil. Such compounds, for example root exudates or decaying fine roots, are easily available for microorganisms, and can alter the decomposition of older SUM ("priming effect"). We here report on a SUM priming experiment in the active layer of a permafrost soil from the central Siberian Arctic, comparing responses of organic topsoil, mineral subsoil, and cryoturbated subsoil material (i.e., poorly decomposed topsoil material subducted into the subsoil by freeze-thaw processes) to additions of C-13-labeled glucose, cellulose, a mixture of amino acids, and protein (added at levels corresponding to approximately 1% of soil organic carbon). SUM decomposition in the topsoil was barely affected by higher availability of organic compounds, whereas SUM decomposition in both subsoil horizons responded strongly. In the mineral subsoil, SUM decomposition increased by a factor of two to three after any substrate addition (glucose, cellulose, amino acids, protein), suggesting that the microbial decomposer community was limited in energy to break down more complex components of SOM. In the cryoturbated horizon, SUM decomposition increased by a factor of two after addition of amino acids or protein, but was not significantly affected by glucose or cellulose, indicating nitrogen rather than energy limitation. Since the stimulation of SUM decomposition in cryoturbated material was not connected to microbial growth or to a change in microbial community composition, the additional nitrogen was likely invested in the production of extracellular enzymes required for SUM decomposition. Our findings provide a first mechanistic understanding of priming in permafrost soils and suggest that an increase in the availability of organic carbon or nitrogen, e.g., by increased plant productivity, can change the decomposition of SUM stored in deeper layers of permafrost soils, with possible repercussions on the global climate. (C) 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).

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Держатели документа:
[Wild, Birgit
Schnecker, Joerg
Watzka, Margarete
Richter, Andreas] Univ Vienna, Dept Microbiol & Ecosyst Sci, Div Terr Ecosyst Res, Vienna, Austria
[Wild, Birgit
Schnecker, Joerg
Alves, Ricardo J. Eloy
Gittel, Antje
Urich, Tim
Richter, Andreas] Austrian Polar Res Inst, Vienna, Austria
[Alves, Ricardo J. Eloy
Urich, Tim] Univ Vienna, Dept Ecogen & Syst Biol, Div Archaea Biol & Ecogen, Vienna, Austria
[Barsukov, Pavel
Shibistova, Olga] Russian Acad Sci, Siberian Branch, Inst Soil Sci & Agrochem, Novosibirsk, Russia
[Barta, Jiri
Capek, Petr
Santruckova, Hana] Univ South Bohemia, Dept Ecosyst Biol, Ceske Budejovice, Czech Republic
[Gentsch, Norman
Guggenberger, Georg
Mikutta, Robert
Shibistova, Olga] Leibniz Univ Hannover, Inst Soil Sci, D-30167 Hannover, Germany
[Gittel, Antje] Univ Bergen, Ctr Geobiol, Dept Biol, Bergen, Norway
[Lashchinskiy, Nikolay] Russian Acad Sci, Siberian Branch, Cent Siberian Bot Garden, Novosibirsk, Russia
[Shibistova, Olga
Zrazhevskaya, Galina] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk, Russia
ИЛ СО РАН

Доп.точки доступа:
Wild, B...; Schnecker, J...; Alves, RJE; Barsukov, P...; Barta, J...; Capek, P...; Gentsch, N...; Gittel, A...; Guggenberger, G...; Lashchinskiy, N...; Mikutta, R...; Rusalimova, O...; Santruckova, H...; Shibistova, O...; Urich, T...; Watzka, M...; Zrazhevskaya, G...; Richter, A...; Austrian Science Fund (FWF) as part of the International Program CryoCARB [FWF - I370-B17]

/ K. T. Rinne [et al.] // Plant Cell Environ. - 2015. - Vol. 38, Is. 11. - P2340-2352, DOI 10.1111/pce.12554 . - ISSN 0140-7791
Аннотация: Little is known about the dynamics of concentrations and carbon isotope ratios of individual carbohydrates in leaves in response to climatic and physiological factors. Improved knowledge of the isotopic ratio in sugars will enhance our understanding of the tree ring isotope ratio and will help to decipher environmental conditions in retrospect more reliably. Carbohydrate samples from larch (Larix gmelinii) needles of two sites in the continuous permafrost zone of Siberia with differing growth conditions were analysed with the Compound-Specific Isotope Analysis (CSIA). We compared concentrations and carbon isotope values (δ13C) of sucrose, fructose, glucose and pinitol combined with phenological data. The results for the variability of the needle carbohydrates show high dynamics with distinct seasonal characteristics between and within the studied years with a clear link to the climatic conditions, particularly vapour pressure deficit. Compound-specific differences in δ13C values as a response to climate were detected. The δ13C of pinitol, which contributes up to 50% of total soluble carbohydrates, was almost invariant during the whole growing season. Our study provides the first in-depth characterization of compound-specific needle carbohydrate isotope variability, identifies involved mechanisms and shows the potential of such results for linking tree physiological responses to different climatic conditions. © 2015 John Wiley & Sons Ltd.

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Текст статьи,
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Держатели документа:
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), Villigen, Switzerland
V.N. Sukachev Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk, Russian Federation
Institute of Terrestrial Ecosystems, ETH Zurich, Zurich, Switzerland

Доп.точки доступа:
Rinne, K. T.; Saurer, M.; Kirdyanov, A. V.; Bryukhanova, M. V.; Prokushkin, A. S.; Churakova Sidorova, O. V.; Siegwolf, R.T. W.

/ G. G. Polyakova, V. A. Senashova // Mikol. Fitopatol. - 2017. - Vol. 51, Is. 3. - С. 168-177 . - ISSN 0026-3648
Аннотация: Biotrophic fungus Melampsorella caryophyllacearum (Pucciniastraceae, Pucciniomycetes, Basidiomycota) developing in tissues of a fir (Abies sibirica) causes broom rust. Physiological mechanisms of plant resistance and fungus pathogenicity are not clear. The purpose of this work was an assessment of a role of secondary compounds and carbohydrates in mechanisms of interaction of Siberian fir and fungus M. caryophyllacearum. The 20-year age trees of Siberian fir grow in a mountain taiga zone in suburban forests of Krasnoyarsk (Central Siberia). Two options (one-year axes and needles of the current year without signs of damage by the fungus, and infected ones) were compared. Samples were taken on 3 trees 3 times during vegetation season: on June 21 (a phenology stage of shoot growth and a formation of pathogen etion), on July 19 (a phenology stage of summer vegetation and the period of active sporulation) and on September 10 (a phenology stage of autumn coloration of leaves and dying off the infected needles). The lignin and resin content were determined by weight method (the lignin determined with thioglycolic acid, the resins - by dissolving in pentane), carbohydrates - by the method of copper reduction using glucose as a standard, PAs - by coloring of solution after adding n-butanol / HCl mixture and heating. Starch was determined by coloring with iodine. The analysis of ANOVA proved reliable influence of various factors (phenology stage, plant organ (needles, axis), presence/absence of fungus infestation) on the content of PAs, lignin, monosaccharides (p < 0.05). The content of resin depended on plant organ only (resin content was more in axes, than in needles; p < 0.05). The tendency to starch accumulation in the infected axes during vegetation appeared to be caused by breakage of carbohydrates outflow. Infecting by the fungus caused decrease in the content of monosaccharides (p<0.05) that probably was connected with active consumption of mobile carbohydrates by the biotroph. The accumulation of PAs was revealed in needles and axes induced by M. caryophyllacearum fungus. Unlike PAs, the lignin concentration differently changed in the infected plant tissues. The accumulation of lignin was noted in diseased needles. In the infected axes in July the lignin content was significantly lower in comparison with control (p < 0.05). The found effect appeared to be manifestation of successful inhibition of plant protection by fungus. We suggested a hypothesis of the delayed lignification according to which a fungus inhibits synthesis of lignin and increases the chances in overcoming of protective barriers of a host. Perhaps, the pathogen influences carbon distribution by reducing its part for synthesis of lignin and increasing thereby synthesis of carbohydrates which further actively uses. The obtained data is agreed with concept according to which with effector molecules, biotrophs manipulate the defense machinery of the host in order to delay defense responses to gain enough time to multiply and spread into neighboring cells. © 2017 Russian Academy of Sciences. All rights reserved.

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Держатели документа:
Sukachev Institute of Forest, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Polyakova, G. G.; Senashova, V. A.

/ J. Cui, Z. Zhu, X. Xu [et al.] // Soil Biol. Biochem. - 2020. - Vol. 142. - Ст. 107720, DOI 10.1016/j.soilbio.2020.107720 . - ISSN 0038-0717
Аннотация: The impact of increasing amounts of labile C input on priming effects (PE) on soil organic matter (SOM) mineralization remains unclear, particularly under anoxic conditions and under high C input common in microbial hotspots. PE and their mechanisms were investigated by a 60-day incubation of three flooded paddy soils amended with13C-labeled glucose equivalent to 50–500% of microbial biomass C (MBC). PE (14–55% of unamended soil) peaked at moderate glucose addition rates (i.e., 50–300% of MBC). Glucose addition above 300% of MBC suppressed SOM mineralization but intensified microbial N acquisition, which contradicted the common PE mechanism of accelerating SOM decomposition for N-supply (frequently termed as “N mining”). Particularly at glucose input rate higher than 3 g kg?1 (i.e., 300–500% of MBC), mineral N content dropped on day 2 close to zero (1.1–2.5 mg N kg?1) because of microbial N immobilization. To cope with the N limitation, microorganisms greatly increased N-acetyl glucosaminidase and leucine aminopeptidase activities, while SOM decomposition decreased. Several discrete peaks of glucose-derived CO2 (contributing >80% to total CO2) were observed between days 13–30 under high glucose input (300–500% of MBC), concurrently with CH4 peaks. Such CO2 dynamics was distinct from the common exponential decay pattern, implicating the recycling and mineralization of 13C-enriched microbial necromass driven by glucose addition. Therefore, N recycling from necromass was hypothesized as a major mechanism to alleviate microbial N deficiency without SOM priming under excess labile C input. Compound-specific 13C-PLFA confirmed the redistribution of glucose-derived C among microbial groups, i.e., necromass recycling. Following glucose input, more than 4/5 of total 13C-PLFA was in the gram-negative and some non-specific bacteria, suggesting these microorganisms as r-strategists capable of rapidly utilizing the most labile C. However, their 13C-PLFA content decreased by 70% after 60 days, probably as a result of death of these r-strategists. On the contrary, the 13C-PLFA in gram-positive bacteria, actinomycetes and fungi (K-strategists) was initially minimal but increased by 0.5–5 folds between days 2 and 60. Consequently, the necromass of dead r-strategists provided a high-quality C–N source to the K-strategists. We conclude that under severe C excess, N recycling from necromass is a much more efficient microbial strategy to cover the acute N demand than N acquisition from the recalcitrant SOM. © 2020 Elsevier Ltd

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Держатели документа:
Key Laboratory of Agro-ecological Processes in Subtropical Region & Changsha Research Station for Agricultural and Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan, 410125, China
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Gongdong, 510640, China
Jiangsu Provincial Key Laboratory for Bioresources of Coastal Saline Soils, Jiangsu Coastal Biological Agriculture Synthetic Innovation Center, Yancheng Teachers' University, Yancheng, 224002, China
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
School of Environment, Natural Resources & Geography, Bangor University, Gwynedd, LL57 2UW, United Kingdom
Department of Agricultural Soil Science, Department of Soil Science of Temperate Ecosystems, University of G?ttingen, G?ttingen, Germany
Institute of Environmental Sciences, Kazan Federal University, Kazan, 420049, Russian Federation
Agro-Technological Institute, RUDN University, Moscow, 117198, Russian Federation
Departamento de Ciencias Quimicas y Recursos Naturales, Universidad de La Frontera, Temuco, Chile
VN Sukachev Institute of Forest, SB-RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Cui, J.; Zhu, Z.; Xu, X.; Liu, S.; Jones, D. L.; Kuzyakov, Y.; Shibistova, O.; Wu, J.; Ge, T.

/ J. Cui, Z. K. Zhu, X. L. Xu [et al.] // Soil Biol. Biochem. - 2020. - Vol. 142. - Ст. 107720, DOI 10.1016/j.soilbio.2020.107720. - Cited References:80. - The study was supported by the National Key Research and Development Program of China (2017YFD0800104), the National Natural Science Foundation of China (41430860, 41771337, 41977093 and 31872695), State Key Laboratory of Organic Geochemistry, GIGCAS (SKLOG-201728), Hunan Province Base for Scientific and Technological Innovation Cooperation (2018WK4012), the Youth Innovation Team Project of Institute of Subtropical Agriculture, Chinese Academy of Sciences (2017QNCXTD_GTD), NSFC-RFBR joint project (N 19-54-53026) and Innovation Groups of National Natural Science Foundation of Hunan Province (2019JJ10003). We thank the Public Service Technology Center, Institute of Subtropical Agriculture, Chinese Academy of Sciences for technical assistance. The publication was supported by the Government Program of Competitive Growth of Kazan Federal University and with the support of the "RUDN University program 5-100." . - ISSN 0038-0717РУБ Soil Science

Аннотация: The impact of increasing amounts of labile C input on priming effects (PE) on soil organic matter (SOM) mineralization remains unclear, particularly under anoxic conditions and under high C input common in microbial hotspots. PE and their mechanisms were investigated by a 60-day incubation of three flooded paddy soils amended with(13)C-labeled glucose equivalent to 50-500% of microbial biomass C (MBC). PE (14-55% of unamended soil) peaked at moderate glucose addition rates (i.e., 50-300% of MBC). Glucose addition above 300% of MBC suppressed SOM mineralization but intensified microbial N acquisition, which contradicted the common PE mechanism of accelerating SOM decomposition for N-supply (frequently termed as "N mining"). Particularly at glucose input rate higher than 3 g kg(-1) (i.e., 300-500% of MBC), mineral N content dropped on day 2 close to zero (1.1-2.5 mg N kg(-1)) because of microbial N immobilization. To cope with the N limitation, microorganisms greatly increased N-acetyl glucosaminidase and leucine aminopeptidase activities, while SOM decomposition decreased. Several discrete peaks of glucose-derived CO2 (contributing >80% to total CO2) were observed between days 13-30 under high glucose input (300-500% of MBC), concurrently with CH4 peaks. Such CO2 dynamics was distinct from the common exponential decay pattern, implicating the recycling and mineralization of C-13-enriched microbial necromass driven by glucose addition. Therefore, N recycling from necromass was hypothesized as a major mechanism to alleviate microbial N deficiency without SOM priming under excess labile C input. Compound-specific C-13-PLFA confirmed the redistribution of glucose-derived C among microbial groups, i.e., necromass recycling. Following glucose input, more than 4/5 of total C-13-PLFA was in the gram-negative and some non-specific bacteria, suggesting these microorganisms as r-strategists capable of rapidly utilizing the most labile C. However, their C-13-PLFA content decreased by 70% after 60 days, probably as a result of death of these r-strategists. On the contrary, the C-13-PLFA in gram-positive bacteria, actinomycetes and fungi (K-strategists) was initially minimal but increased by 0.5-5 folds between days 2 and 60. Consequently, the necromass of dead r-strategists provided a high-quality C-N source to the K-strategists. We conclude that under severe C excess, N recycling from necromass is a much more efficient microbial strategy to cover the acute N demand than N acquisition from the recalcitrant SOM.

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Держатели документа:
Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.
Chinese Acad Sci, Inst Subtrop Agr, Changsha Res Stn Agr & Environm Monitoring, Changsha 410125, Hunan, Peoples R China.
Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Gongdong 510640, Peoples R China.
Yancheng Teachers Univ, Jiangsu Prov Key Lab Bioresources Coastal Saline, Jiangsu Coastal Biol Agr Synthet Innovat Ctr, Yancheng 224002, Peoples R China.
Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China.
Bangor Univ, Sch Environm Nat Resources & Geog, Bangor LL57 2UW, Gwynedd, Wales.
Univ Gottingen, Dept Agr Soil Sci, Dept Soil Sci Temperate Ecosyst, Gottingen, Germany.
Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia.
RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia.
Univ La Frontera, Dept Ciencias Quim & Recursos Nat, Temuco, Chile.
RAS, SB, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Cui, Jun; Zhu, Zhenke; Xu, Xingliang; Liu, Shoulong; Jones, Davey L.; Kuzyakov, Yakov; Shibistova, Olga; Wu, Jinshui; Ge, Tida; National Key Research and Development Program of China [2017YFD0800104]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41430860, 41771337, 41977093, 31872695]; State Key Laboratory of Organic Geochemistry, GIGCAS [SKLOG-201728]; Hunan Province Base for Scientific and Technological Innovation Cooperation [2018WK4012]; Youth Innovation Team Project of Institute of Subtropical Agriculture, Chinese Academy of Sciences [2017QNCXTD_GTD]; NSFC-RFBR joint project [N 19-54-53026]; Innovation Groups of National Natural Science Foundation of Hunan Province [2019JJ10003]; Government Program of Competitive Growth of Kazan Federal University; RUDN University program 5-100

/ M. S. Gromova, A. I. Matvienko, M. I. Makarov [et al.] // Eurasian Soil Sci. - 2020. - Vol. 53, Is. 3. - P377-382, DOI 10.1134/S1064229320020052. - Cited References:32. - This work was supported by the Russian Foundation for Basic Research, project nos. 17-04-01776 and 18-54-52005. . - ISSN 1064-2293. - ISSN 1556-195XРУБ Soil Science

Аннотация: Basal respiration is one of the key indicators of soil C mineralization. Temperature sensitivity (Q(10)) of basal respiration is important for predicting changes in C mineralization due to warming. A modified methodology of Q(10) determination is proposed. Soil samples were incubated at 25 degrees C with periodic short-term (2 h) decline of temperature to 15 degrees C and high-frequency measurements of CO2 production rates. The temperature sensitivity is estimated as the average rate of CO2 production at 25 degrees C (before and after temperature decline) divided by the rate of CO2 production at 15 degrees C. With this method we demonstrated that glucose addition most strongly affects the Q(10) values at low temperature ranges (20-10 degrees C), while temperature range affects Q(10) stronger than the glucose additions. The negative effect of soil moisture on Q(10) of basal respiration was demonstrated: the Q(10) values decreased with increasing soil moisture.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia.
Lomonosov Moscow State Univ, Moscow 119991, Russia.
Natl Taiwan Univ, Sch Forestry & Resources Conservat, Taipei 10617, Taiwan.

Доп.точки доступа:
Gromova, M. S.; Matvienko, A. I.; Makarov, M. I.; Cheng, C. -H.; Menyailo, O. V.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [17-04-01776, 18-54-52005]

/ X. M. Wei, Z. K. Zhu, Y. Liu [et al.] // Biol. Fertil. Soils. - 2020, DOI 10.1007/s00374-020-01468-7. - Cited References:78. - This study was financially supported by the National Natural Science Foundation of China (41430860, 41877104, and 41761134095); Innovative Research Groups of the Natural Science Foundation of Hunan Province (2019JJ10003); Natural Science Foundation of Hunan Province (2019JJ30028); the Youth Innovation Team Project of the Institute of Subtropical Agriculture, Chinese Academy of Sciences (2017QNCXTD_GTD); the Youth Innovation Promotion Association (2019357); the China Scholarship Council (201904910049); and the Chinese Academy of Sciences President's International Fellowship Initiative to Georg Guggenberger (2018VCA0031). . - Article in press. - ISSN 0178-2762. - ISSN 1432-0789РУБ Soil Science

Аннотация: Stoichiometric control of input substrate (glucose) and native soil organic C (SOC) mineralization was assessed by performing a manipulation experiment based on N or P fertilization in paddy soil. Glucose mineralization increased with nutrient addition up to 11.6% with combined N and P application compared with that without nutrient addition. During 100 days of incubation, approximately 4.5% of SOC was mineralized and was stimulated by glucose addition. Glucose and SOC mineralization increased exponentially with dissolved organic C (DOC):NH4+-N, DOC:Olsen P, and microbial biomass (MB)C:MBN ratios. The relative abundances of Clostridia and beta-Proteobacteria (r-strategists) were increased with combined C and NP application at the beginning of the experiment, while the relative abundances of Acidobacteria (K-strategists) were enhanced with the exhaustion of available resource at the end of incubation. The bacteria abundance and diversity were negatively related to the DOC:NH4+-N and DOC:Olsen P, which had direct positive effects (+ 0.63) on SOC mineralization. Combined glucose and NP application decreased the network density of the bacterial community. Moreover, P addition significantly decreased the negative associations among bacterial taxa, which suggested that microbial competition for nutrients was alleviated. The relative abundances of keystone species showed significant positive correlations with SOC mineralization in the soils without P application, revealing that microbes increased their activity for mining of limited nutrients from soil organic matter. Hence, bacteria shifted their community composition and their interactions to acquire necessary elements by increasing SOC mineralization to maintain the microbial biomass C:N:P stoichiometric balance in response to changes in resource stoichiometry.

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Держатели документа:
Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changde 410125, Hunan, Peoples R China.
Chinese Acad Sci, Inst Subtrop Agr, Changsha Res Stn Agr & Environm Monitoring, Changde 410125, Hunan, Peoples R China.
Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
Zhejiang Univ, Inst Soil & Water Resources & Environm Sci, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China.
Jiangxi Univ Sci & Technol, Sch Resources & Environm Engn, Ganzhou 341000, Peoples R China.
Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China.
Univ Vienna, Ctr Microbiol & Ecosyst Sci, A-1090 Vienna, Austria.
Leibniz Univ Hannover, Inst Soil Sci, D-30419 Hannover, Germany.
SB RAS, VN Sukachev Inst Forest, Krasnoyarsk, Russia.

Доп.точки доступа:
Wei, Xiaomeng; Zhu, Zhenke; Liu, Y.i.; Luo, Y.u.; Deng, Yangwu; Xu, Xingliang; Liu, Shoulong; Richter, Andreas; Shibistova, Olga; Guggenberger, Georg; Wu, Jinshui; Ge, Tida; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41430860, 41877104, 41761134095]; Innovative Research Groups of the Natural Science Foundation of Hunan Province [2019JJ10003]; Natural Science Foundation of Hunan ProvinceNatural Science Foundation of Hunan Province [2019JJ30028]; Youth Innovation Team Project of the Institute of Subtropical Agriculture, Chinese Academy of Sciences [2017QNCXTD_GTD]; Youth Innovation Promotion Association [2019357]; China Scholarship CouncilChina Scholarship Council [201904910049]; Chinese Academy of Sciences President's International Fellowship Initiative [2018VCA0031]

[Текст] / А. И. Матвиенко, М. С. Громова, О. В. Меняйло // Почвоведение. - 2023. - № 5. - С. 579-585, DOI 10.31857/S0032180X22601281 . - ISSN 0032-180X

ГРНТИ

68.05

Аннотация: Изучена температурная чувствительность (Q10) минерализации С в почвах двух типов: серая лесная (Phaeozems, экосистема лесная поляна) и дерново-подзолистая (Retisols, экосистема сосняк мертвопокровный). Показано, что температурная чувствительность больше на лесной поляне, чем в сосняке, и возрастает вниз по почвенному профилю. Глубина почв оказалась самым сильным фактором, определяющим вариацию Q10. Внесение азота (NH4NO3) увеличило Q10 в верхних горизонтах почв, а внесение глюкозы, наоборот уменьшило Q10 в обеих экосистемах. Наиболее сильно эффект внесения глюкозы проявлялся в нижних горизонтах. Совместное внесение глюкозы и азота влияло на Q10 также, как внесение только глюкозы, указывая, что доступность легкоразлагаемого субстрата – более сильный фактор, влияющий на температурную чувствительность, чем азот. Полученные данные позволяют прогнозировать изменение вклада гетеротрофной составляющей эмиссии СО2 из почв при глобальном потеплении, увеличении поступления корневых экссудатов, фитодетрита и экзогенного азота в почву.
The temperature sensitivity of C mineralization in the soils of two ecosystems was studied: a forest glade and a dead cover pine forest. It is shown that the temperature sensitivity is higher in the forest glade than in the pine forest and increases down the soil profile. Soil depth was found to be the strongest determinant of Q10 variation. The application of nitrogen (NH4NO3) increased Q10 in the upper soil horizons, and the application of glucose, on the contrary, decreased Q10 in both ecosystems, the effect of glucose was most pronounced in the lower horizons. The co-application of glucose and nitrogen affected Q10 as well as the addition of glucose alone, indicating that the availability of a readily degradable substrate is a stronger factor influencing temperature sensitivity than nitrogen. The data obtained make it possible to predict the change in the contribution of the heterotrophic component of CO2 emission from soils during global warming and an increase in the influx of living root inputs, phytodetritus and exogenous nitrogen into the soil.

РИНЦ

Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28

Доп.точки доступа:
Громова, М.С.; Меняйло, Олег Владимирович; Menyaylo, Oleg Vladimirovich