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

[Text] / P. Fonti [et al.] // Trees-Struct. Funct. - 2015. - Vol. 29, Is. 4. - P1165-1175, DOI 10.1007/s00468-015-1197-0. - Cited References:71. - This work profited from discussions and activities within the framework of the COST Action STReESS (COST-FP1106). The authors are thankful for support from the Swiss State Secretariat for Education for Research and Innovation SERI for the C12.0100 grant. MT received a President scholarship from the Ministry of Education in Science of the Russian Federation for a four-month stay at WSL in Switzerland to perform measurements and analysis. AK has sampled the wood material and measured tree-ring width (Russian Science Foundation; project 14-14-00295). . - ISSN 0931-1890. - ISSN 1432-2285РУБ Forestry

Аннотация: This study provides new data and an alternative framework to the debate of tree carbon economy in a context of increasing stress. For long-living trees, the resilience in times of stress is directly linked to the amount of accessible reserves. Despite the simplicity of this principle, the understanding of how carbon reserves limit growth and/or induce mortality under global change is still debated. In this study, we quantify how anatomical properties of rays-one of the main container for carbon reserves in tree stems-vary among sites, individuals, and annual rings of Larix gmelinii growing in contrasting sites in Siberia to verify if (1) the ray proportion and anatomical structure is linked to the environment, and/or (2) to changes in other wood tissues. Our observations have highlighted that ray proportion mainly varies among individuals, but little among sites and consecutive annual rings. We also observed that ray size and density scale to the wood structure with a relatively constant ratio of 2.5 rays per tracheid, independent of site conditions. These results suggest that the functional connection between the anatomy of rays and tracheid is unaffected by environment and highlight the importance of considering allometric relations in ecological comparisons. Comparative studies of long-term trajectory of ray proportion of living and dead trees might unravel observed variability among individuals validating the link between long-term depleted reserves and mortality.

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Держатели документа:
Swiss Fed Inst Forest Snow & Landscape Res WSL, CH-8903 Birmensdorf, Switzerland.
VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Fonti, Patrick; Tabakova, Maria A.; Kirdyanov, Alexander V.; Bryukhanova, Marina V.; von Arx, Georg; Swiss State Secretariat for Education for Research and Innovation SERI [C12.0100]; Ministry of Education in Science of the Russian Federation; Russian Science Foundation [14-14-00295]

/ A. Bolsunovsky [et al.] // J. Environ. Radioact. - 2019. - Vol. 207. - P1-6, DOI 10.1016/j.jenvrad.2019.05.014 . - ISSN 0265-931X
Аннотация: The Allium-test is commonly used to assess genotoxicity of chemical and physical factors. In the present study, the roots of germinating onion (Allium cepa) were exposed to 0.02–13 Gy of ?-radiation. The dose dependencies of the frequency of chromosomal aberrations and micronuclei were nonlinear. An increase in the frequency of chromosomal aberrations in germinating seed root cells was first found under exposure to low doses of ?-radiation (0.05 and 0.1 Gy). Micronuclei inductions at low doses of radiation were not significantly different from the control. Our study suggests that germinating onion seed roots are a sensitive bioassay material for assessing the genotoxic effects of low-dose ?-radiation. © 2019 Elsevier Ltd

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Держатели документа:
Institute of Biophysics Siberian Branch of Russian Academy of Sciences, 50-50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Institute of Forest Siberian Branch of Russian Academy of Sciences, 50-28 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, 11 Lavrentyev Ave., Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Bolsunovsky, A.; Dementyev, D.; Trofimova, E.; Iniatkina, E.; Kladko, Y.; Petrichenkov, M.

/ M. A. Tabakova, K. A. Tabakova, K. I. Khotcinskaia [et al.] // Russ. J. Ecol. - 2021. - Vol. 52, Is. 5. - P406-411, DOI 10.1134/S106741362105012X. - Cited References:23. - This work was carried out in the Laboratory for complex studies of forest dynamics of Eurasia of the Siberian Federal University (FSRZ-2020-0014), with financial support from the Russian Science Foundation (Grant 18-14-00072, sampling and measurements) and (Grant 18-74-10048, data analysis). . - ISSN 1067-4136. - ISSN 1608-3334РУБ Ecology

Аннотация: The forest-steppe ecotone in southern Siberia is the natural transition zone from the dry steppe in the south to the wetter taiga in the north, where tree growth is increasingly limited due to drought. Within this zone, tree growth limitation is expected to intensify due to ongoing climate changes, reducing forest productivity, affecting tree physiological processes and increasing tree mortality, with potential implications for the regional and global carbon cycle. We explored Pinus sylvestris L. tree ring growth and structure response to climate in southern Siberia. We measured tree-ring width (RW) and xylem parenchyma represented as the percentage of ring surface occupied by parenchyma rays (PERPAR) and the total amount of ray parenchyma per sample width (TOTRAY) within the growth rings for the 1967-2018 period. The results showed an influence of environmental conditions before and during the formation of ray parenchyma, with an independent climate response from the observed in the RW. Therefore, pine xylem parenchyma-based chronologies have potential as a proxy to evaluate climate sensitivity in P. sylvestris. However, the dependence on climate conditions might affect ray parenchyma's critical role in conifers as P. sylvestris under the current temperature-induced drought trend in the forest-steppe.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
RAS, Krasnoyarsk Sci Ctr, Fed Res Ctr, Sukachev Inst Forest,SB, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Tabakova, M. A.; Tabakova, K. A.; Khotcinskaia, K. I.; Sergeeva, O. V.; Arzac, A.; Laboratory for complex studies of forest dynamics of Eurasia of the Siberian Federal University [FSRZ-2020-0014]; Russian Science FoundationRussian Science Foundation (RSF) [18-14-00072, 18-74-10048]