• Title/Summary/Keyword: plant resources

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New record of an alien plant, Petrorhagia nanteuilii (Caryophyllaceae) in Korea

  • HONG, Jeong-Ki;SHIM, Sang Deog;KIM, Hyun Sik;SIM, Sunhee;HYUN, Chang Woo;KIM, Jung-Hyun
    • Korean Journal of Plant Taxonomy
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    • v.51 no.4
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    • pp.386-390
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    • 2021
  • Petrorhagia nanteuilii (Burnat) P. W. Ball & Heywood (Caryophyllaceae), native to western Europe and western North Africa and an introduced or alien plant in South America, Australia, and Japan, was newly found in Gyeongsangnam-do, Korea. Petrorhagia is clearly distinguished from other genera by a bract at the base of calyx, which differs from Gypsophila L., and commissures at the sepals, which is different from Dianthus L. Petrorhagia nanteuilii grows on slopes and roadsides, suggesting that it is likely to have been introduced through the installation of green sites and road construction. A precise description, illustration, photographs, and a key to related genera and species is provided.

Effect of Hovenia dulcis branches on Macrophage Activation and Macrophage Autophagy in RAW264.7 Cells

  • Ju-Hyeong Yu;Min Yeong Choi;Seung Woo Im;Hyeok Jin Choi;So Jeong Park;Jae Won Lee;Jin Boo Jeong
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2022.09a
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    • pp.93-93
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    • 2022
  • Hovenia dulcis, one of the traditional medicinal plants, is currently being used as a functional ingredient for the development of health functional foods that protects the liver from alcohol damage in Korea. A variety of pharmacological effects of Hovenia dulcis have been reported so far, but studies on immune-enhancing activity are insufficient. Thus, in this study, we report that Hovenia dulcis branches (HDB) induce the activation of macrophages. HDB increased the production of immunostimulatory factors and phagocytosis in RAW264.7 cells. TLR4 inhibition blocked HDB-mediated production of immunostimulatory factors. In addition, the JNK inhibition reduced the HDB-mediated production of immunostimulatory factors, and the HDB-mediated JNK activation was blocked by the TLR4 inhibition. HDB increased the level of LC3-II and p62/SQSTM1. TLR4 inhibition blocked HDB-mediated increase in the level of LC3-II and p62/SQSTM1. These findings indicate that HDB may induce TLR4/JNK-dependent macrophage activation and TLR4-dependent macrophage autophagy.

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Effect of Sowing Date and Plant Density on Yield of Rapeseed in Autumn Sowing

  • Kwon Byung-Sun;Choi Seung-Sun;Lim Jung-Mook;Choi Gab-Lim;Kim Sang-Kon
    • Plant Resources
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    • v.8 no.3
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    • pp.258-262
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    • 2005
  • In autumn, to determine the optimal planting date and plant density of rapeseed in southern areas of Korea, Yudal variety for autumn sowing, the highest yielding variety was grown under three different planting dates and five different plant densities. Yield components such as plant height, ear length, number of seedling stand per $m^2$, number of branches and pod length were highest at the plots with Sep. 30 of planting date and 30/20 cm drilling of plant density. Yield of seed, oil and 1,000 grains weight were highest at the Sep.30 of planting date and 30/20 cm drilling of plant density. Judging from the results reported above, at optimum planting date and plant density of rapeseed seemed to be Sep.30 of planting date and 30/20cm plant density in autumn sowing.

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Bioremediation of Heavy Metals from the Land Application of Industrial Sewage Sludge with Minari (Oenanthe stolonifer DC.) Plant

  • Lee, Myoung-Sun;Youn, Se-Young;Yim, Sang-Choel;Park, Hee-Joun;Shin, Joung-Du
    • Plant Resources
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    • v.1 no.1
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    • pp.53-59
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    • 1998
  • Laboratory experiments for the removal efficiency of heavy metals in land application of sludge, the accumulation and translocation of heavy metals in x plants after transplanting, and the responses of Minari growth with different ratio of land application of sludge were conducted to determine the potential ability of bioremediation with Minari plants. The removal rate and translocation of copper. zinc. lead. and cadmium in soil and plants were compared after transplanting the Minari plants to soil treated with different ratio of sludge. The removal efficiency of heavy metals in soil incorporated with sludge was different with application ratio, but increased with growing periods of Minari plants. The removal efficiency of Cu, Zn, Pb, and Cd ranged from 67 to 74% from 51% to 63%, from 37% to 71%. and from 15% to 25% after 45 days of transplanting. respectively. The amount removed the copper value. 65.9 mg/kg, observed to be highest in soil incorporated 3% sludge after 45 days. The translocation of Cu. Zn. Pb. and Cd from shoots to roots ranged from 18 to 53%, from 17 to 32%, from 14 to 49%, and from 23 to 38% over growing periods. respectively. In plant responses it appeared to be inhibited the plant growth in the treatment compared with the control at early stage of growth. However, the fresh weights of Minari plant increased from 12.5 to 62.5% in the sludge application after 45 days relative to the control. Therefore the Minari might play a useful role in bioremediation of Cu, Zn, Pb, and Cd in the land application of sludge.

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