Journal of Siberian Federal University. Biology / Physico-Chemical Characterization of Damaged Scots Pine Needles

Full text (.pdf)
Issue
Journal of Siberian Federal University. Biology. 2025 18 (4)
Authors
Loskutov, Sergei R.; Shapchenkova, Olga A.; Kazaryan, Lilit K.; Aniskina, Antonina A.; Astrakhantseva, Natalia V.
Contact information
Loskutov, Sergei R. : V. N. Sukachev Institute of Forest SB RAS – Separate Subdivision of the Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; ORCID: 0000-0002-3779-8752; Shapchenkova, Olga A.: V. N. Sukachev Institute of Forest SB RAS – Separate Subdivision of the Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; ; ORCID: 0000-0002-1392-5171; Kazaryan, Lilit K. : V. N. Sukachev Institute of Forest SB RAS – Separate Subdivision of the Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; ORCID: 0009-0003-3469-9200; Aniskina, Antonina A. : V. N. Sukachev Institute of Forest SB RAS – Separate Subdivision of the Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; ORCID: 0000-0002-2696-0267; Astrakhantseva, Natalia V. : V. N. Sukachev Institute of Forest SB RAS – Separate Subdivision of the Federal Research Center “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; ORCID: 0000-0001-6014-2148
Keywords
pine needles; damage; thermogravimetry; gas chromatography
Abstract

Suburban pine forests (Pinus sylvestris L.) in large industrial centers experience negative anthropogenic impacts in addition to natural biotic and abiotic factors. This paper presents for the first time the results of a comparative analysis of healthy and damaged needles (withering and showing signs of spotted chlorosis) based on parameters of sample thermodegradation under non-isothermal conditions (thermogravimetry) and chromatograms of volatile organic compounds (chromatography- mass spectrometry). Thermogravimetry data and activation energy values for the thermal degradation of damaged needles indicate an increase in the relative content of the aromatic component (lignin and other polyphenols) and lignin fragmentation, as well as a decrease in the proportion of the inorganic component. The chromatograms of healthy needles, needles affected by spotted chlorosis and withered needles revealed 84, 85 and 77 volatile organic compounds, respectively. Monoterpenes were the predominant volatile organic compounds in all samples studied. Damaged needles showed a higher relative content of monoterpenes and a lower proportion of sesquiterpenes and oxygen-containing compounds. Needles affected by spotted chlorosis had significantly higher contents of aromadendrene, β-pinene, δ-3-carene, while withered needles were enriched in borneol and o-cymene compared to healthy needles. However, overall, the content of most volatile organic compounds in damaged conifers decreased. The methods of thermogravimetry and chromatography-mass spectrometry are expressive, require no complex sample preparation, and can be recommended for monitoring vegetation stress

Pages
484–502
EDN
WNFTVL
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/158025

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