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首页> 外文期刊>South-East European Forestry >Age-Related Changes of Some Chemical Components in the Leaves of Oriental Beech (Fagus orientalis Lipsky.)
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Age-Related Changes of Some Chemical Components in the Leaves of Oriental Beech (Fagus orientalis Lipsky.)

机译：东方山毛榉（Fagus Orientalis Lipsky。）叶片中某些化学成分的年龄变化。

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Background and Purpose: This study presents the analysis of photosynthetic pigments, proline, total soluble protein, total amino acids, glucose, sucrose, total soluble sugars, total amount of phenolic compounds and flavonoids, malondialdehyde (MDA) and hydrogen peroxide (H2O2) concentration in the leaf samples collected from oriental beech trees, which are naturally spread in Kastamonu Province, Turkey, with differing ages, enzyme activities of ascorbate peroxidase (APX), catalase (CAT) and superoxide dismutase (SOD). Material and Methods: The research was carried out on oriental beech trees (Fagus orientalis L.) of different ages located at 1300 m high elevation in Ahlat Village of Kastamonu Province, Turkey. Oriental beech trees of different ages (≥25, ≥50, ≥100, ≥200 and ≥600 years-old) constituted the material of this study. In leaf samples taken from trees of different ages, photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophyll and carotenoid), proline, total soluble protein, total amino acid, glucose, sucrose, total soluble sugars, the amount of total phenolic compounds and flavonoids, MDA, H2O2 concentration, enzyme activities of APX, CAT and SOD, as well as the relationship between the total content of C, N and H elements and the tree ages were studied. Results: As a result of the research conducted, significant differences were determined in terms of chlorophyll, total phenolic compound, flavonoid, glucose, amounts of sucrose, nitrogenous compounds, proline, total soluble protein, MDA, H2O2 concentrations, and the activities of APX, CAT and SOD in the leaves of oriental beech trees with differing ages. The highest content of chlorophyll a was found to be in the youngest age group of ≥25 years. Total chlorophyll is low in young trees and high in middle-aged, old and very old trees. According to the results obtained, it was concluded that the MDA and H2O2 concentrations in the trees did not vary depending on the age of trees only, but also on the genotype, environmental conditions and metabolic activities. It was concluded that the fact that the total chlorophyll, phenolic compounds and sucrose content in oriental beech trees are high and that MDA content is low could have an influence on the long life of ≥600 years-old oriental beech trees. Conclusions: The activity of photosynthesis is related to leaf characteristics more than the age of trees.
机译：背景与目的：本研究介绍了光合色素，脯氨酸，总可溶性蛋白，总氨基酸，葡萄糖，蔗糖，总可溶性糖，酚类化合物和类黄酮的总量，丙二醛（MDA）和过氧化氢（H2O2）浓度的分析。从东方山毛榉树收集的叶子样品中，这些样品自然分布在土耳其的卡斯塔莫努省，年龄，抗坏血酸过氧化物酶（APX），过氧化氢酶（CAT）和超氧化物歧化酶（SOD）的酶活性不同。材料与方法：研究是在土耳其卡斯塔莫努省Ahlat村海拔1300 m的不同年龄的东方山毛榉树（Fagus Orientalis L.）上进行的。不同年龄（≥25，≥50，≥100，≥200和≥600岁）的东方山毛榉树构成了本研究的材料。在不同年龄树木的叶片样品中，光合色素（叶绿素a，叶绿素b，总叶绿素和类胡萝卜素），脯氨酸，总可溶性蛋白，总氨基酸，葡萄糖，蔗糖，总可溶性糖，总酚类化合物和研究了类黄酮，MDA，H2O2的浓度，APX，CAT和SOD的酶活性以及C，N和H元素的总含量与树木年龄的关系。结果：根据进行的研究，在叶绿素，总酚类化合物，类黄酮，葡萄糖，蔗糖量，含氮化合物，脯氨酸，总可溶性蛋白，MDA，H2O2浓度和APX活性方面存在显着差异，不同年龄的东方山毛榉树的叶子中的CAT，SOD和SOD。叶绿素a含量最高的是≥25岁的最小年龄组。幼树中的总叶绿素含量低，而中年，老树和非常老树的总叶绿素含量很高。根据获得的结果，可以得出结论，树木中的MDA和H2O2浓度不仅仅取决于树木的年龄，还取决于基因型，环境条件和代谢活性。结论是，东方山毛榉树中的总叶绿素，酚类化合物和蔗糖含量高，而MDA含量低这一事实可能会影响≥600年历史的东方山毛榉树的寿命。结论：光合作用的活动与叶片的特性有关，而不是树木的年龄。

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