| Summary: | The content of photosynthetic pigments and the ratio of their forms has been studied in the needles of Juniperus communis L. of the southern taiga subzone (the vicinity of Lake Tavatui and the pine forest of the city of Rezh), in the mountainous middle taiga dark coniferous forests of the Southern Ural (the Bolshoi Taganai ridge) and larch woodlands of the western part of the plateau Putorana in the Northern Krasnoyarsk Territory. Comparing the coenopopulations in mountainous and lowland conditions makes it possible to assess the plants adaptive capabilities, such as changing the ratio of pigment forms, however the content of the pigment composition does not depend on the age of these generative and postgenerative individuals. Comparative characteristics of photosynthetic pigments within each coenopopulation revealed that the magnitude of the correlation depends on the geographical position of the juniper habitat area. The Tavatui coenopopulation is located in the most favorable microclimatic and ecological conditions, and it differs from others in the maximum content of a total pigment fund. With an increase in altitude in the Taganai coenopopulation, the ratio of different forms of pigments changes, and the content of chlorophyll b, an essential part of the light-harvesting complex, increases. The Putorana coenopopulation has the highest content of carotenoids, which function as protection against photoinhibition, but the lowest content of green pigments. Thus, a change in the ratio of pigment forms determines the resistance of plants and their survival in the most severe conditions. © 2021, Izdatel'stvo Nauka. All rights reserved. Исследовано содержание фотосинтетических пигментов и соотношение их форм в хвое Juniperus communis L. подзоны южной тайги (окрестности озера Таватуй и сосновом лесу г. Реж), в горных среднетаежных темнохвойных лесов Южного Урала (хребет Большой Таганай) и Север Красноярского края лиственничного редколесья западной части плато Путорана. Сравнение ценопопуляций в горных и равнинных ...
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