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

[Text] / G. F. Antonova, I. A. Chapligina ; ed.: R Lagana, S Kurjatko, , S Kurjat // WOOD STRUCTURE AND PROPERTIES' 06 : ARBORA PUBLISHERS, 2006. - 5th International Symposium Wood Structure and Properties (SEP 03-06, 2006, Sliac Siehnica, SLOVAKIA). - P25-31. - Cited References: 22 . - 7. - ISBN 978-80-968869-4-4РУБ Materials Science, Paper & Wood

Аннотация: The deposition of cellulose, matrix polysaccharides and lignin during secondary cell wall development of early- and latewood in larch (Larix sibirica Ldb.) were studied using biochemical and histochemical methods. Active tissues at successive stages of secondary cell wall development were sampled from larch trunk and characterized by morphological parameters and the content of cellulose, lignin and matrix hemicelluloses, being the structural base for lignification. Matrix polysaccharides were divided by their solubility in 4 % and 24 % KOH and neutral medium. All data were accounted per dry weight and per cell. The amount of biomass (as cell wall cross-section area) deposited before lignification was more in earlywood tracheids than in latewood ones. In contrast. the amount of cellulose at this stage was more in latewood tracheids. The intensity of cellulose synthesis was the highest at the initial stage of lignin deposition in both earlywood and latewood and then declined towards to mature xylem. The intensity of lignin deposition was the highest at the last stage of secondary cell wall development during earlywood formation and from the outset of latewood lignification, dropping towards mature xylem. The contents of A and B hemicellulose fractions linked or not with cellulose, before and after beginning of lignification were different during earlywood and latewood formation. Before lignin deposition, the content of B-4 fraction in both earlywood and latewood was practically equal as well as of B-24, while the amount of A-4 fraction before lignification of early xylem was two times more than that of latewood. This shows different matrix base for the beginning of lignification. All together can be the reason for different physicochemical properties of two types of wood in larch.

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Держатели документа:
Russian Acad Siences, SB, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Antonova, G.F.; Chapligina, I.A.; Lagana, R \ed.\; Kurjatko, S \ed.\; Kurjat, , S \ed.\

/ E. A. Tyutkova [et al.] // J. Therm. Anal. Calorim. - 2017. - Vol. 130, Is. 3. - P1391-1397, DOI 10.1007/s10973-017-6550-7. - Cited References:33 . - ISSN 1388-6150. - ISSN 1588-2926РУБ Thermodynamics + Chemistry, Analytical + Chemistry, Physical

Аннотация: This paper deals with the results of a study of the thermodestruction of the earlywood and latewood in the 1988-1998 growth rings of Gmelin larch (Larix gmelinii (Rupr.) Rupr.) trees growing along the polar tree line (70(A)52'53aEuro(3)N, 102A degrees 58'26aEuro(3)E, Taimyr Peninsula). The study used methods of thermogravimetry (TG/DTG) and differential scanning calorimetry (DSC). Thermogravimetric data obtained were analyzed by Ozawa-Flynn-Wall kinetic model. We determined macrokinetic parameters of thermodestruction. Earlywood and latewood showed no significant difference in cellulose/hemicellulose/lignin ratio, whereas they differed significantly in destruction average value of activation energy (197.55 and 55.90 kJ mol(-1), respectively). Our analysis of the correlation of thermodestruction values with mean monthly air temperature and precipitation revealed that component composition of both earlywood and latewood was influenced more by the weather conditions at the beginning of the growing season (April-June). Air temperature had markable influence on the wood component composition during cell wall synthesis only in latewood, whereas precipitation influenced the composition in both latewood and earlywood. TG/DTG and DSC methods were found to be promising for developing information on biochemical composition of early and latewood tracheids in stems and for identifying the extent of the influence of climatic changes on cell wall synthesis.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Forest Inst, Lab Phys & Chem Biol Woody Plants, Akad Dorodork 50-28, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Forest Inst, Dendroecol Dept,Lab Tree Ring Struct, Krasnoyarsk, Russia.

Доп.точки доступа:
Tyutkova, E. A.; Loskutov, S. R.; Shashkin, A. V.; Benkova, V. E.

/ T. T. Efremova, A. F. Avrova, S. P. Efremov // Contemp. Probl. Ecol. - 2017. - Vol. 10, Is. 7. - P728-737, DOI 10.1134/S1995425517070046. - Cited References:21 . - ISSN 1995-4255. - ISSN 1995-4263РУБ Ecology

Аннотация: We have classified morphogenetic types of mossy litter by a multivariate statistical analysis of a fractional group of organic-matter composition. Three clusters of mossy litters-peats, peaty, and high-ash peaty-are recognized. This results in 94% prediction. Indicators contribute to discriminants in the following descending order : C : N > cellulose > HA-2 > HA-3 > FA-3 > hemicellulose = FA-1 = HA-1. According to canonical analysis, there were two significant roots in cluster determination. The first segregates mainly the peat cluster from two others. The share of canonical function of the root one is 58% of possible discrimination, mainly due to the weight of cellulose and C : N. Canonical function 2, describing 42% of the explained dispersion, discriminates the peaty cluster from the others due to the dominant contribution of FA-1 and FA-3. The classification function for the recognition of new objects was calculated and evaluated. The humus content of various types and clusters of mossy litters was examined. Morphogenetic classification follows the transformation of forest litter in the course of litter formation (continuum phase), quantitative biochemical discrimination is a discrete phase of this process.

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Держатели документа:
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Efremova, T. T.; Avrova, A. F.; Efremov, S. P.

/ E. A. Tyutkova, S. R. Loskutov, N. P. Shestakov // Wood Mater. Sci. Eng. - 2019, DOI 10.1080/17480272.2018.1562495 . - Article in press. - ISSN 1748-0272
Аннотация: This paper presents the results of FTIR spectroscopy of the 1988–1998 annual ring early and latewood of Larix gmelinii (Rupr.) Rupr.) found along the polar treeline (Taimyr Peninsula, 70°52?53? N, 102°58?26? E). We analyzed samples of early and latewood to identify absorption bands of groups of wood components, as well as the bands that characterized the interactions among the components. We studied bound water spectral characteristics for wood formed in different years. An analysis of the correlation between the values of spectral absorption bands and mean monthly air temperature and precipitation showed that May-August weather had the greatest influence on the synthesis of the main polymeric components of early and latewood. Air temperature had a considerable effect on polymer composition of cell walls forming in early and latewood, whereas precipitation influenced only earlywood. FTIR spectroscopy is a promising tool to develop information on the biochemical composition of the walls of early and late tracheids of annual rings and on weather and climate influences on cell wall synthesis. © 2018, © 2019 Informa UK Limited, trading as Taylor & Francis Group.

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Держатели документа:
V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Tyutkova, E. A.; Loskutov, S. R.; Shestakov, N. P.

/ T. T. Efremova [et al.] // Eurasian Soil Sci. - 2019. - Vol. 52, Is. 8. - P892-902, DOI 10.1134/S1064229319080076. - Cited References:46 . - ISSN 1064-2293. - ISSN 1556-195XРУБ Soil Science

Аннотация: Cryogenic oligotrophic (Hyperdystric Cryic Fibric Histosols), oligomesotrophic (Dystric Fibric Histosols), mesoeutrophic (Oligeoeutric Fibric Histosols), and eutrophic (Hypereutric Fibric Histosols) peat soils were studied on the eastern slopes of the Kuznetsk Alatau Ridge (Republic of Khakassia). Their altitudinal differentiation was examined, and clustering according to the qualitative and quantitative composition of organic matter was performed. The most informative indicators of similarity and/or differences between the clusters were suggested. The group composition of organic matter was analyzed using acid and alkaline extractions. Multivariate statistical analyses (cluster, discriminant, and canonic) were applied for evaluation of the humus status. Indicators of organic matter status, which are significant for discrimination form two discriminant functions. Function 1 discriminates between the clusters (80%) and includes the indicators characterizing the depths of peat soil transformation: humification degree ( n-ary sumation HA + n-ary sumation FA), type of humus (C-HA/C-FA ratio), and ratio between the fractions of humic acids extracted by 0.02 N NaOH and 0.1 N NaOH (C-0.02 n NaOH/C-0.1 n NaOH). Function 1 clearly separates clusters of permafrost-affected oligotrophic peat soils of the alpine tundra zone (>1460 m a.s.l.) from oligo-mesotrophic peat soils of the subalpine zone (1087 m a.s.l.). Function 2 discriminates (at the 16% difference level) the clusters of peat soils of the forest zone-meso-eutrophic peat soils of the taiga zone (832 m a.s.l.) and eutrophic peat soils of the subtaiga-forest-steppe zone (622-573 m a.s.l.); it also includes hemicellulose and cellulose-characteristics of the initial state of peat-forming plants. The humus status of the mountainous peat soils corresponds to their diagnostics according to the base saturation and pH criteria and reflects a general pedogenetic trend in mountains: an increase in the humus content in soils with the altitude, which was earlier shown for mineral soils.

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Держатели документа:
Russian Acad Sci, Sukachev Inst Forestry, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Efremova, T. T.; Efremov, S. P.; Melent'eva, N. V.; Avrova, A. F.

/ E. A. Tyutkova, S. R. Loskutov, N. P. Shestakov // Wood Mater. Sci. Eng. - 2020. - Vol. 15, Is. 4. - P205-212, DOI 10.1080/17480272.2018.1562495. - Cited References:33 . - ISSN 1748-0272. - ISSN 1748-0280РУБ Materials Science, Paper & Wood

Аннотация: This paper presents the results of FTIR spectroscopy of the 1988-1998 annual ring early and latewood of Larix gmelinii (Rupr.) Rupr.) found along the polar treeline (Taimyr Peninsula, 70 degrees 52' 53 '' N, 102 degrees 58'26 '' E). We analyzed samples of early and latewood to identify absorption bands of groups of wood components, as well as the bands that characterized the interactions among the components. We studied bound water spectral characteristics for wood formed in different years. An analysis of the correlation between the values of spectral absorption bands and mean monthly air temperature and precipitation showed that May-August weather had the greatest influence on the synthesis of the main polymeric components of early and latewood. Air temperature had a considerable effect on polymer composition of cell walls forming in early and latewood, whereas precipitation influenced only earlywood. FTIR spectroscopy is a promising tool to develop information on the biochemical composition of the walls of early and late tracheids of annual rings and on weather and climate influences on cell wall synthesis.

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Держатели документа:
Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk, Russia.
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk, Russia.

Доп.точки доступа:
Tyutkova, E. A.; Loskutov, S. R.; Shestakov, N. P.

[Текст] / С. Р. Лоскутов, Е. А. Тютькова, М. А. Пляшечник, Е. А. Петрунина [и др.] // Сибирский лесной журнал. - 2021. - № 6. - С. 39-45, DOI 10.15372/SJFS20210604 . - ISSN 2311-1410

ГРНТИ

68

68.47.37

Аннотация: Исследовалось изменение физико-химических показателей древесины сосны обыкновенной ( Pinus sylvestris L.) на ранней стадии развития в ней грибной инфекции с помощью методов ИК-Фурье спектроскопии и сканирующей электронной микроскопии (СЭМ). Анализ СЭМ-изображений локально поврежденной древесины показал наличие гифов как в межклеточном пространстве, так и люменах единичных трахеид. Из сравнения результатов анализов поврежденной и здоровой древесины установлен ряд параметров ИК-спектров - изменение отношений интенсивности поглощения на характеристических частотах (волновых числах, см-1) для полимеров древесинного вещества (гемицеллюлоз, целлюлозы, лигнина) и грибов (хитина и глюканов) I 1512/898, I 1512/1157, I 1512/894, I 1647/1551, I 1695/1533, I 1620/1564, позволяющий идентифицировать наличие и степень воздействия грибной инфекции на древесину. Представлен новый вариант оценки изменений в строении древесинного вещества, заключающийся в сравнительном анализе вторых производных ИК-спектров поглощения здоровой и поврежденной древесины. Способ существенно улучшает визуализацию изменений по спектрам и позволяет с большей точностью определять «адреса» воздействия грибной инфекции на древесинное вещество по интенсивности и частоте полос поглощения. Кроме того, может быть использован для мониторинга появления азотсодержащих соединений в результате присутствия грибов. Реализованные методические приемы указывают на возможность использования в работе радиальных кернов с целью проведения их сопряженного анализа, «привязывая» результаты ИК-Фурье спектроскопии к параметрам годичных колец и в целом к хронологиям, а также соотнося их с морфолого-анатомическим строением годичного кольца и отдельных трахеид по данным сканирующей электронной микроскопии. Предложенный подход к диагностике повреждения древесины на ранней стадии развития грибной инфекции признан эффективным, экспрессным и не требующим сложной пробоподготовки
The changes in the physico-chemical parameters of Scotch pine Pinus sylvestris L. wood were studied at an early stage of a fungal infection development in it using the methods of IR-Fourier spectroscopy and scanning electron microscopy (SEM). Analysis of SEM-images of locally damaged wood showed the presence of hyphae both in the intercellular space and in the lumens of single tracheids. From the comparison of the results of analyses of damaged and healthy wood, a number of parameters of the IR spectra were established - a change in the ratio of the absorption intensity at characteristic frequencies (wave numbers, cm-1) for polymers of wood substance (hemicellulose, cellulose, lignin) and fungi (chitin and glucans) I 1512/898, I 1512/1157, I 1512/894, I 1647/1551, I 1695/1533, I 1620/1564, which allows identifying the presence and degree of exposure to fungal infection on wood. A new version of the assessment of changes in the structure of the wood substance is presented, which consists in a comparative analysis of the second derivatives of the IR absorption spectra of sound and damaged wood. The method significantly improves not only the visualization of changes in the spectra, but also allows to more accurately determine the «addresses» of the impact of a fungal infection on the wood substance by the intensity and frequency of the absorption bands. In addition, it can be used to monitor the appearance of nitrogen-containing compounds because of the presence of fungi. The implemented methodological techniques indicate the possibility of using radial cores in the work for the purpose of conducting their conjugate analysis, «linking» the results of IR-Fourier spectroscopy to the parameters of the annual rings and, in general, to chronologies, as well as correlating them with the morphological and anatomical structure of the annual ring and individual tracheids according to scanning electron microscopy data. The proposed approach to the diagnosis of wood damage at an early stage of the development of a fungal infection is effective, rapid and does not require complex sample preparation

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

Доп.точки доступа:
Тютькова, Е.А.; Tyut'kova E.A.; Пляшечник, Мария Анатольевна; Plyashechnik Mariya Anatol'yevna; Петрунина, Е.А.; Шапченкова, Ольга Александровна; Shapchenkova Ol'ga Alexandrovna; Анискина, Антонина Александровна; Aniskina Antonina Alexandrovna; Loskutov Sergey Redzhinal'dovich