Page 97 - Наукові записки Державного природознавчого музею, 2025 Вип. 41

96 Кіт Н.А.

hydrothermal regime and high insolation of anthropogenically disturbed areas of forest ecosystems,
compared to the zone of complete conservation, the activity of enzymes and the content of TBA-active
compounds increased in the cells of dominant moss species Atrichum undulatum and Plagiomnium
еlatum, which indicates the activation of protective mechanisms and increased resistance of mosses to
environmental stress factors. It was found that the activity of antioxidant enzymes depends on the
species characteristics of the studied mosses, and it is significantly higher for Atrichum undulatum,
which turned out to be more resistant to abiotic stress factors, in particular, unfavorable temperature
and water conditions, which indicates a high level of antioxidant protection and the ability of plants to
effectively neutralize reactive oxygen species. The results obtained indicate that changes in enzyme
activity and the content of TBA-active products in the gametophyte of mosses largely depend on
microclimatic conditions of the habitat and are a manifestation of protective reactions of bryophytes to
the influence of unfavorable environmental factors. It was noted that peroxidation processes and the
level of antioxidant activity are interconnected and are an important indicator of the impact of various
factors, in particular water deficit and increased insolation, on plants.
Keywords: mosses, microclimatic conditions, peroxidase, superoxide dismutase, catalase, TBA-
active products.