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

/ E. V. Bazhina // Biophysics. - 2020. - Vol. 65, Is. 4. - P642-648, DOI 10.1134/S0006350920040041 . - ISSN 0006-3509
Аннотация: The crown of the Siberian fir (Abies sibirica) is characterized by a specific organization, namely, a narrow-pyramidal form, apical dominance, tiering by types of sexualization, and whorled branching. The gravitational vector is clearly manifested at all levels of the organization of the crown, that is, in the architecture (diageotropism of branches), morphostructure (dorsoventrality of tissues and organs of shoots, as well as the location of reproductive organs in the tree crown and on the shoot), and physiological processes. It was shown that the internal state of the tree is a determining factor in graviperception. When Siberian fir trees weaken, the diageotropism of branches is lost, which can serve as a universal biomarker of impairment of homeostasis. © 2020, Pleiades Publishing, Inc.

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Держатели документа:
Sukachev Institute of Forestry, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Bazhina, E. V.

/ D. A. Mashukov, A. V. Benkova, V. E. Benkova [et al.] // Contemp. Probl. Ecol. - 2021. - Vol. 14, Is. 7. - P767-774, DOI 10.1134/S1995425521070143. - Cited References:23. - The study was carried out with the financial support from the Russian Foundation for Basic Research (17-0401186, 16-34-00181 mol_a), the Russian Science Foundation (14-14-00295, 18-14-00072), and a Government Grant of the Russian Federation (14.V25.31.0031). . - ISSN 1995-4255. - ISSN 1995-4263РУБ Ecology

Аннотация: The results are presented for a study of the radial growth dynamics and xylotomic structure along the trunk of healthy and stag-headed Dahurian larch trees (Larix gmelinii (Rupr.) Rupr.) growing in an evenly aged forest stand (64 degrees 19 ' 23 '' N, 100 degrees 13 ' 28 '' E) on permafrost on a north-facing slope. The annual ring widths, as well as the tracheid lumens and wall thickness were measured at 1/4, 1/2, and 3/4 of the trunk height and directly near the top for 25 intact and stag-headed trees. It was discovered that the aforementioned parameters demonstrate a negative gradient from root to top that was especially evident in stag-headed trees. The annual rings on the upper part of the trunk has undergone anatomic modifications over the last 20 years: disturbance of the tracheid rows and thinning of the walls of early- and late tracheids. It was found based on the climatic moving response functions of radial growth that the trees on north-facing slope suffer from a water deficit from the end of May until the twenties of June. The presence of both stag-headed and healthy trees on the north-facing slope can be explained by the high variation in the soil's hydrothermal properties due to the high degree of tessellation of the moss-lichen layer. With time, the sensitivity of certain trees to a water shortage can lead to drying of their tops.

WOS

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

Доп.точки доступа:
Mashukov, D. A.; Benkova, A., V; Benkova, V. E.; Shashkin, A., V; Prokushkin, A. S.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [17-0401186, 16-34-00181 mol_a]; Russian Science FoundationRussian Science Foundation (RSF) [14-14-00295, 18-14-00072]; Government Grant of the Russian FederationRussian Federation [14.V25.31.0031]