Dynamics of the Formation of the Phenolic Redox System of Coniferous Plants on the Example of Scots Pine (Pinus Sylvestris L.)

IF 1.1 4区 化学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY
K. G. Bogolitsyn, M. A. Gusakova, A. A. Krasikova, S. S. Khviyuzov, N. V. Selivanova, N. A. Samsonova, M. A. Pustynnaya
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Abstract

Objective: This study aims to investigation of the mechanisms of the redox processes in the formation of phenolic secondary metabolites in higher coniferous plants in natural growing places, using Scots pine as an example. Methods: The composition and reactivity of the phenolic fraction of the phenol-quinone redox system of the cell wall and the quantitative change of the pigment apparatus of pine needles during the growing season were investigated using a complex of physic-chemical methods (UV spectrophotometry, HPLC, redox-metry). Results and Discussion: It is shown that changes in the quantitative and qualitative composition of the phenolic compounds fraction that determine the redox state of the plant matrix occurs in plant tissue throughout the growing season. It is noted that dynamic self-regulation processes involving a complex consisting of phenolic compounds, pigments and enzymatic systems are a common pattern at all stages of plant development, ensuring that they perform protective functions of the photosynthetic apparatus of the needles of evergreen coniferous trees in boreal regions. The redox systems of the phenolic compounds are formed due to donor-acceptor interactions in photosystems I and II with participation of photosynthetic pigments. The implementation of the protective functionality of phenolic compounds of the pine tree greenery is enabled by high values of the effective oxidation potential (up to 780 mV) and the free energy of oxidation (–150 kJ/molOHph). Conclusions: This research provides new experimental data on the changes in the contents of phenolic secondary metabolites and the pigment complex of the needles during the growing season for coniferous plants, using the example of Scots pine (Pinus sylvestris).

Abstract Image

针叶植物酚类氧化还原系统形成的动力学研究——以苏格兰松为例
目的:以苏格兰松为例,探讨自然生长地高等针叶植物酚类次生代谢产物氧化还原过程的形成机制。方法:采用紫外分光光度法、高效液相色谱法、氧化还原法等理化方法,研究松针细胞壁酚醌氧化还原体系酚类组分的组成、反应活性以及松针色素器官在生长季节的定量变化。结果与讨论:研究表明,在植物组织中,决定植物基质氧化还原状态的酚类化合物组分的定量和定性组成在整个生长季节都会发生变化。需要指出的是,动态的自我调节过程涉及到一个由酚类化合物、色素和酶系统组成的复合物,在植物发育的所有阶段都是一个共同的模式,确保它们在北方地区常绿针叶树的针叶中发挥光合装置的保护功能。酚类化合物的氧化还原系统是由于光系统I和II中有光合色素参与的供体-受体相互作用而形成的。松树绿色植物酚类化合物的保护功能的实现是通过高有效氧化电位(高达780 mV)和氧化自由能(-150 kJ/molOHph)实现的。结论:本研究以苏格兰松(Pinus sylvestris)为例,为针叶植物酚类次生代谢物和色素复合物含量在生长季节的变化提供了新的实验数据。
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来源期刊
Russian Journal of Bioorganic Chemistry
Russian Journal of Bioorganic Chemistry 生物-生化与分子生物学
CiteScore
1.80
自引率
10.00%
发文量
118
审稿时长
3 months
期刊介绍: Russian Journal of Bioorganic Chemistry publishes reviews and original experimental and theoretical studies on the structure, function, structure–activity relationships, and synthesis of biopolymers, such as proteins, nucleic acids, polysaccharides, mixed biopolymers, and their complexes, and low-molecular-weight biologically active compounds (peptides, sugars, lipids, antibiotics, etc.). The journal also covers selected aspects of neuro- and immunochemistry, biotechnology, and ecology.
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