PHYSIOLOGICAL AND BIOCHEMICAL BIOMARKERS OF MACROPHYTE  RESILIENCE TO MILITARY-RELATED TOXIC STRESSORS

Tsyhanenko-Dziubenko, I.; Kireitseva, H.; Fonseca Araújo, J.

dc.contributor.author	Tsyhanenko-Dziubenko, I.
dc.contributor.author	Kireitseva, H.
dc.contributor.author	Fonseca Araújo, J.
dc.date.accessioned	2024-12-20T11:43:04Z
dc.date.available	2024-12-20T11:43:04Z
dc.date.issued	2024
dc.identifier.uri	http://eztuir.ztu.edu.ua/123456789/8735
dc.description	Tsyhanenko-Dziubenko, I., Kireitseva, H., Fonseca Araújo, J. (2024). Physiological and biochemical biomarkers of macrophyte resilience to military-related toxic stressors. Journal Environmental Problems, 9(4), 227–234.	uk_UA
dc.language.iso	en	uk_UA
dc.relation.ispartofseries	Journal Environmental Problems;№9(4)
dc.subject	environmental safety	uk_UA
dc.subject	water resources	uk_UA
dc.subject	mercury bioaccumulation	uk_UA
dc.subject	aquatic macrophytes	uk_UA
dc.subject	photosynthetic inhi bition	uk_UA
dc.subject	post-military ecosystem restoration	uk_UA
dc.title	PHYSIOLOGICAL AND BIOCHEMICAL BIOMARKERS OF MACROPHYTE RESILIENCE TO MILITARY-RELATED TOXIC STRESSORS	uk_UA
dc.type	Article	uk_UA
dc.description.abstracten	This study employs state-of-the-art analytical tools to investigate the ecotoxicological impacts of mercury contami nation on aquatic macrophytes in post-military zones, focusing on Typha latifolia and Lemna minor as model organisms. The research methodology integrates multiple analytical techniques: spectrophotometric chlorophyll quantification using the Holm Wettstein method, atomic absorption spectrometry utilizing a C 115PK Selmi spectrometer (precision ±0.001 mg/L), and fluorescence analysis via Flyuorat-02-Panorama spectrofluoro meter. Through this comprehensive analytical approach, we elucidated the bioaccumulation patterns and physiological responses of these hydrophytes to varying concentrations of mercury (0.35–2.0 mg/L). Results demonstrated differential bioaccumulation capacities between T. latifolia and L. minor, with the latter exhibiting higher mercury sequestration potential (0.51 mg/kg vs 0.4 mg/kg dry weight). Concentration-depen dent phytotoxic effects were observed, manifesting as morpho logical alterations, chlorophyll degradation, and disruption of photosynthetic processes. Notably, a consistent increase in the chlorophyll b to chlorophyll a ratio was documented, indicative of selective degradation of photosystem II under mercury stress. The study further revealed the inactivation of key Calvin cycle enzymes, leading to attenuated carbon fixation and overall photosynthetic capacity. These findings not only elucidate the mechanistic underpinnings of mercury toxicity in aquatic mac rophytes but also underscore their potential as bioremediators in mercury-contaminated aquatic ecosystems. The research provi des critical insights for developing targeted phytoremediation strategies and ecosystem restoration protocols in post-military aquatic environments.	uk_UA