• Title/Summary/Keyword: Tilia

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Studies on the Chemical Constituents of Tilia Plants in Korea ( I ) -On the Chemical Constituents of the Stem-Bark of Tilia mandsurica- (국산 피나무속(屬) 식물(植物)의 성분연구(成分硏究)( I ) -찰피나무 수피(樹皮)의 성분(成分)-)

  • Kim, Chang-Min;Kang, Sam-Sik;Park, Young-Soon;Kim, Eun-Young
    • Korean Journal of Pharmacognosy
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    • v.19 no.3
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    • pp.174-176
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    • 1988
  • From the stem barks of Tilia mandsurica, fraxin ( I ) and 1, 10-decanedicarboxylate ( II ) were isolated and characterized by spectral data. 1, 10-decanedicarboxylate was the first isolation from Tilia plants.

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Development of a Site Productivity Index and Yield Prediction Model for a Tilia amurensis Stand (피나무의 임지생산력지수 및 임분수확모델 개발)

  • Sora Kim;Jongsu Yim;Sunjung Lee;Jungeun Song;Hyelim Lee;Yeongmo Son
    • Journal of Korean Society of Forest Science
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    • v.112 no.2
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    • pp.209-216
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    • 2023
  • This study aimed to use national forest inventory data to develop a forest productivity index and yield prediction model of a Tilia amurensis stand. The site index displaying the forest productivity of the Tilia amurensis stand was developed as a Schumacher model, and the site index classification curve was generated from the model results; its distribution growth in Korea ranged from 8-16. The growth model using age as an independent variable for breast height and height diameter estimation was derived from the Chapman-Richards and Weibull model. The Fitness Indices of the estimation models were 0.32 and 0.11, respectively, which were generally low values, but the estimation-equation residuals were evenly distributed around 0, so we judged that there would be no issue in applying the equation. The stand basal area and site index of the Tilia amurensis stand had the greatest effect on the stand-volume change. These two factors were used to derive the Tilia amurensis stand yield model, and the model's determination coefficient was approximately 94%. After verifying the residual normality of the equation and autocorrelation of the growth factors in the yield model, no particular problems were observed. Finally, the growth and yield models of the Tilia amurensis stand were used to produce the makeshift stand yield table. According to this table, when the Tilia amurensis stand is 70 years old, the estimated stand-volume per hectare would be approximately 208 m3 . It is expected that these study results will be helpful for decision-making of Tilia amurensis stands management, which have high value as a forest resource for honey and timber.

Molecular Phylogenetic Study of Korean Tilia L. (한국산 피나무속(Tilia L.) 식물의 분자 계통학적 연구)

  • Boo, Daun;Park, Seon Joo
    • Korean Journal of Plant Resources
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    • v.29 no.5
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    • pp.547-554
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    • 2016
  • The genus Tilia is characterized by linear form bracts of which the lower part is attached to the peduncle of a cyme. This character is distinguished from the others genus of Malvaceae. The purpose of this study is verifying the phylogenetic relationship of genus Tilia. Phylogenetic analyses were conducted to evaluate relationships of 10 taxa of Tilia in Korea and Japan including one outgroup (Gossypium hirsutum). The molecular phylogenetic analyses were conducted with sequences based on ITS, trnL-F and rpl32-trnL region. The combined data result of ITS, trnL-F and rpl32-trnL was formed by 6 clades. T. kiusiana situated as the most basal clade. T. amurensis, T. taquetii and T. rufa are composed a clade. T. koreana, T. insularis and T. japonica was formed independent clade. T. insularis has the closest relationship with T. japonica. T. miqueliana, T. mandshurica, and T. megaphylla are composed a clade and showed a sister relationship than other species.

Spatial Distribution Pattern and Association of Crowns and Saplings for Major Tree Species in the Mixed Broadleaved-Korean Pine Forest of Xiaoxing'an Mountains, China

  • Jin, Guangze;Li, Zhihong;Tang, Yan;Kim, Ji-Hong
    • Journal of Korean Society of Forest Science
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    • v.98 no.2
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    • pp.189-196
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    • 2009
  • This study was conducted to evaluate spatial distribution pattern and spatial association of crowns (${\geq}10m$ of height) and saplings (<10 m of height and ${\geq}2cm$ of DBH) for four major tree species (Pinus koraiensis, Abies nephrolepis, Acer mono, and Tilia amurensis) in the mixed broadleaved-Korean pine forest of Xiaoxing'an Mts. Vegetation data were collected in the 9 ha permanent sample plot, and the analysis adopted the point pattern analysis method. Main results are as follows; 1) crowns and saplings of major species showed clumped distribution pattern in small scale, became random distribution as the scale was increased. 2) Saplings of Pinus koraiensis performed poor regeneration under the crowns of Pinus koraiensis and Abies nephrolepis; Saplings of Abies nephrolepis did good regeneration under the crowns of Pinus koraiensis and Abies nephrolepis; and crowns of Acer mono and Tilia amurensis had little effect on the distribution of saplings of Pinus koraiensis and Abies nephrolepis. Saplings of Acer mono and Tilia amurensis made good regeneration under the crowns of Pinus koraiensis and Tilia amurensis; and the crowns of Acer mono and Abies nephrolepis had little effect on the distribution of saplings of Acer mono.

Occurrence in Korea of Rust Disease on Tilia mandshurica Caused by Pucciniastrum tiliae

  • Jae Sung Lee;Ji Hyun Park;Young Joon Choi;Hyeon Dong Shin
    • The Korean Journal of Mycology
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    • v.51 no.1
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    • pp.1-6
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    • 2023
  • Tilia mandshurica trees with rust symptoms have consistently been noticed during disease surveys in Korea since 2006. Based on the morphological examination and molecular sequence analysis of the internal transcribed spacer and large subunit of ribosomal DNA, Pucciniastrum tiliae was identified as the causal fungus of rust disease. This is the first report of P. tiliae infection on T. mandshurica in Korea.

High-frequency regeneration of plants in vitro from seedling-derived apical bud explants of Tilia mandshurica Rupr. & Maxim

  • Kim, Tae-Dong;Kim, Nam-Ho;Park, Eung-Jun;Lee, Na-Nyum
    • Journal of Plant Biotechnology
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    • v.48 no.1
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    • pp.54-61
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    • 2021
  • This work describe an efficient method for the shoot induction and plant regeneration of seedling-derived apical bud explants of Tilia mandshurica Rupr. & Maxim. The highest rate of shoot induction (82.2%) was obtained when apical bud explants from juvenile seedlings (5 months old) were cultured on Murashige and Skoog (MS) medium containing 1.0 mg/L 6-benzylaminopurine (BAP). However, apical bud explants obtained from mature trees (12 years old) did not produce any shoots, even with BAP supplementation. Among the three cytokinins tested for shoot multiplication (BAP, zeatin, and kinetin), BAP was the most effective; the highest number of shoots per explant (2.1) was observed on MS medium supplemented with 1.0 mg/L BAP. In contrast, the longest average shoot length (3.0 cm) was observed after growth on MS medium with 2.0 mg/L zeatin. No multiplication occurred when apical bud explants were cultured with kinetin-supplemented media. During rooting of in vitro-elongated shoots, the highest rooting rate (100%) was observed in half-strength MS medium supplemented with 0.5 ~ 1.0 mg/L indole-3-butyric acid (IBA) or 3.0 mg/L 1-naphthaleneacetic acid (NAA). During the acclimatization process, plantlets that were rooted on the IBA (0.5 mg/L)-supplemented medium had the highest survival rate (100%) and maximum root length (18.5 cm). These findings suggest that a low concentration (0.5 mg/L) of IBA is appropriate for the rooting and acclimatization of T. mandshurica. Plants were successfully transferred to the greenhouse with a 100% survival rate. This protocol will be useful for the large-scale propagation of Tilia species.

Topoisomerase I and II Inhibitory Activities and Cytotoxic Constituents from the Barks of Tilia amurnesis

  • Piao, Dong Gen;Lee, You-Jeong;Seo, Chang-Seob;Lee, Chong-Soon;Kim, Jae-Ryong;Chang, Hyun-Wook;Son, Jong-Keun
    • Natural Product Sciences
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    • v.17 no.3
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    • pp.245-249
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    • 2011
  • Eight compounds, squalene (1), friedelin (2), ${\beta}$-sitosterol (3), ${\beta}$-sitosterol-3-O-glucoside (4), ${\alpha}$-tocopherol (5), betulinic acid (6), trilinolein (7) and 1-O-(9Z,12Z-Octadecadienoyl)-3-nonadecanoyl glycerol (8), were isolated from the barks of Tilia amurensis. Their chemical structures were identified by comparing their physicochemical and spectral data with those published in the literature. These isolated compounds were examined for their inhibitory activities against topoisomerase I and II. Compound 7 showed significant inhibition of DNA topoisomerase I and II activities, with percent decreases in activity of 87 and 95%, respectively at a concentration of $100\;{\mu}M$. Compound 6 exhibited cytotoxicity against the human colon adenocarcinoma cell line (HT-29), the human breast adenocarcinoma cell line (MCF-7) and the human liver hepatoblastoma cell line (HepG-2), with $IC_{50}$ values of 20, 59 and $16\;{\mu}M$, respectively.