文献类型： 外文期刊

作者： Maleva, Maria ¹ ; Borisova, Galina ¹ ; Filimonova, Elena ² ; Lukina, Natalia ² ; Chukina, Nadezhda ¹ ; Ermoshin, Alexander ¹ ; Tugbaeva, Anastasia ¹ ; Voropaeva, Olga ¹ ;

作者机构： 1.Ural Fed Univ, Dept Expt Biol & Biotechnol, Ekaterinburg 620002, Russia

2.Ural Fed Univ, Lab Anthropogen Dynam Ecosyst, Ekaterinburg 620002, Russia

3.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot 232813, Peoples R China

关键词： Orchidaceae; ornamental plant introduction; serpentine outcrops; stressful conditions; adaptive responses; plant water status; redox balance; non-enzymatic antioxidants

期刊名称：HORTICULTURAE （ 影响因子：2.923； 五年影响因子：3.582 ）

ISSN：

年卷期： 2022 年 8 卷 7 期

页码：

收录情况： SCI

摘要： Epipactis atrorubens (Hoffm.) Besser. is a regionally rare orchid species with highly ornamental properties due to its very beautiful bright flowers, therefore it is of considerable interest as a horticultural plant for use in botanical gardens and greenhouses. The objective of the research was to assess metal accumulation and some pro- and antioxidant reactions in E. atrorubens, colonizing serpentine dumps post asbestos mining. Additionally, some physicochemical properties of substrates, microbiotic characteristics and water status were investigated in orchids growing on two serpentine dumps and in a natural forest habitat of the Middle Urals, Russia. The dump substrates were characterized by the strong stoniness and the high content of Mg, Ni, Cr and Co (by 1.8 times on average) compared to the natural habitat. In these sites, E. atrorubens was characterized by increased mycorrhization. In the rhizome and roots of E. atrorubens the concentrations of most metals studied were considerably higher (more than 4 times on average) than in the leaves. It was found that orchids colonizing serpentine dumps produced more lipid peroxidation products (by 1.4 times on average) in the leaves which was accompanied by the more active synthesis of such non-enzymatic antioxidants as ascorbate, free proline, soluble phenolic compounds (including flavonoids) and non-protein thiols. The study suggests that non-enzymatic antioxidants increased the adaptive potential of E. atrorubens and contributed to its naturalization on serpentine dumps post asbestos mining.