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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Plant Resources
Journal Basic Information
Journal DOI :
The Plant Resources Society of Korea
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Volume & Issues
Volume 28, Issue 6 - Dec 2015
Volume 28, Issue 5 - Oct 2015
Volume 28, Issue 4 - Aug 2015
Volume 28, Issue 3 - Jun 2015
Volume 28, Issue 2 - Apr 2015
Volume 28, Issue 1 - Feb 2015
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Protective Effects of Ramie (Boehmeria nivea) against Oxidative Stress in C6 Glial Cells
Wang, Xiaoning ; Cho, Sunghun ; Kim, Ho Bang ; Jung, Yong-Su ; Cho, Eun Ju ; Lee, Sanghyun ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 675~681
DOI : 10.7732/kjpr.2015.28.6.675
β amyloid protein (Aβ) plays a critical role in the pathogenesis of Alzheimer's disease (AD) and possibly in Aβ-induced mitochondrial dysfunction and oxidative stress. Aβ can directly cause reactive oxygen species (ROS) production. Overproduction of ROS is considered to be involved in the pathogenesis of neurodegeneration of AD. Here, we investigated 9 kinds of ramie (Boehmeria nivea, (L.) Gaud., BN; hereafter denoted as BN) for their protective action against oxidative stress in a cellular system using C6 glial cells. We observed loss of cell viability and high levels of ROS generation after treatment with hydrogen peroxide (H
) and Aβ
. However, treatments with BN extracts led to an increase in cell viability and decrease in ROS production induced by H2O2 and Aβ25-35. In particular, the extracts of BN-01 (seobang variety from Seocheon) and BN-09 (local variety from Yeonggwang) showed excellent anti-oxidative properties. This indicates that BN extracts could prevent neurodegeneration by reducing oxidative stress in cells.
Induction of Cyclin D1 Proteasomal Degradation by Branch Extracts from Abeliophyllum distichum Nakai in Human Colorectal Cancer Cells
Park, Gwang Hun ; Park, Jae Ho ; Jeong, Jin Boo ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 682~689
DOI : 10.7732/kjpr.2015.28.6.682
Abeliophyllum distichum Nakai (A. distichum) has been reported to exert the inhibitory effect on angiotensin converting enzyme and aldose reductase. Recently, our group found that branch extracts of A. distichum (EAFAD-B) induce apoptosis through ATF3 activation in human colon cancer cells. However, anti-cancer reagents exert their activity through the regulation of various molecular targets. Therefore, the elucidation of potential mechanisms of EAFAD-B for anti-cancer activity may be necessary. To elucidate the potential mechanism of EAFAD-B for anti-cancer activity, we evaluated the regulation of cyclin D1 in human colon cancer cells. EAFAD-B decreased cellular accumulation of cyclin D1 protein. However, cyclin D1 mRNA was not changed by EAFAD-B. Inhibition of proteasomal degradation by MG132 attenuated EAFAD-B-mediated cyclin D1 downregulation and the half-life of cyclin D1 was decreased in the cells treated with EAFAD-B. In addition, EAFAD-B induced cyclin D1 phosphorylation at threonine-286 and the point mutation of threonine-286 to alanine attenuated EAFAD-B-mediated cyclin D1 proteasomal degradation. Inhibitions of both ERK1/2 by PD98059 and NF-κB by a selective inhibitor, BAY 11-7082 suppressed cyclin D1 downregulation by EAFAD-B. From these results, we suggest that EAFAD-B-mediated cyclin D1 downregulation may result from proteasomal degradation through its threonine-286 phosphorylation via ERK1/2-dependent NF-κB activation. The current study provides new mechanistic link between EAFAD-B and anti-cancer activity in human colon cancer cells.
Efficient Micropropagation of Pear Germplasm Using Soot Tips and Nodal Explants
Yi, JungYoon ; Lee, GiAn ; Chung, JongWook ; Lee, YoungYi ; Gwag, JaeGyun ; Lee, SeokYoung ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 690~696
DOI : 10.7732/kjpr.2015.28.6.690
We micropropagated pear (Pyrus species) using shoot tips and nodal explants from three pear genotypes. The ability to establish shoot tip cultures, proliferate shoots, induce rooting, and acclimatize the resulting plantlets are all elements of in vitro micropropagation. Shoots were induced from shoot tips on Murashige and Skoog medium (MS) with five different plant growth regulator combinations. The highest shoot formation rates were achieved for the three genotypes using MS supplemented with 1.0 mg/L N
-benzyladenine (BA) and 0.1 mg/L gibberellic acid (GA
). The maximum shoot number and shoot length for the three cultivars were recorded with 2.0 mg/L BA and 0.2 mg/L indole-3-butyric acid (IBA) in multiplication medium using nodal explants produced from microshoots. Nodal explants with one or two axillary buds cultured for three weeks initiated roots on medium supplemented with various concentrations of 1-naphthaleneacetic acid (NAA) or/and IBA in half-strength MS medium for adventitious rooting. The highest rooting response was with the combination of 0.2 mg/L NAA and 0.2 mg/L IBA. A combination of NAA and IBA resulted in a significant increase in the rooting ratio over NAA or IBA alone. In this medium, the root formation rate according to ranged from 68.9% for the BaeYun No. 3 genotype to 51.8% for the Hwanggeum genotype. We also investigated the influence of the concentration the polyamine phloroglucinol in rooting medium. For all three genotypes, the highest rooting ratio, longest root length, and greatest root number were observed in the treatments with 75-150 mg/L phloroglucinol. Most rooted plants were acclimatized successfully.
Morphological and Genetic Stability of Dormant Apple Winter Buds After Cryopreservation
Yi, JungYoon ; Lee, GiAn ; Chung, JongWook ; Lee, YoungYi ; Kwak, JaeGyun ; Lee, SeokYoung ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 697~703
DOI : 10.7732/kjpr.2015.28.6.697
Twenty apple germplasm accessions from the Korean Genebank were successfully cryopreserved using two-step freezing to back up genetic resources maintained by field collections. This study examined the morphological and genetic stability of cryopreserved dormant apple buds that were stored in liquid nitrogen, and then rewarmed and regrown. Whole plants were regenerated directly from dormant buds through budding without an intermediary callus phase. The cryopreserved buds produced high levels of shoot formation (76.2-100%), similar to those of noncryopreserved buds (91.3-100%), with no observed differences between cryopreserved and noncryopreserved materials. Three of the twenty cryopreserved apple germplasm accessions were used to assess morphological and genetic stability. No differences in morphological characteristics including shoot length, leaf shape, leaf width/length ratio, and root length were observed between controls (fresh control and noncryopreserved) and cryopreserved plantlets. The genetic stability of regenerants (before and after cryopreservation) was investigated using inter simple sequence repeat (ISSR) markers. The ISSR markers produced 253 bands using four primers, ISSR 810, SSR 835, ISSR 864, and ISSR 899. These markers showed monomorphic banding patterns and revealed no polymorphism between the mother plant and regenerants before and after cryopreservation, suggesting that cryopreservation using two-step freezing does not affect the genetic stability of apple germplasm. These results show that two-step freezing cryopreservation is a practical method for long-term storage of apple germplasms.
Safflower Bud Dietary Prevents Ovariectomy-induced Osteoporosis in Rats
Choi, Joo Hee ; Lim, Seul Ki ; Jang, Ah Ra ; Nho, Jong Hyun ; Lim, Jae Oh ; Cho, Seong Kang ; Kim, Young Kuk ; Lee, An Chul ; Choi, Mi Young ; Boo, Young Min ; Park, Soo Hyun ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 704~709
DOI : 10.7732/kjpr.2015.28.6.704
Safflower (Carthamus tinctorius L.) seeds have long been clinically used in Korea to promote bone formation and prevent osteoporosis. In addition, the safflower buds (SB) were found to have more useful functional ingredients than safflower seed. Thus, we investigated the preventive effects of SB diet in ovariectomized (OVX) rats. The rats were divided into five groups; sham operated group, OVX alone group, OVX plus 17β-estradiol (E
10 μg/kg, i.p.) and OVX plus SB diet feeding group (0.3% or 1%). Feeding of SB diet (0.3% or 3%) to OVX rats markedly increased trabecular formation in femur compared to OVX rats. Feeding of SB diet (0.3% or 3%) to OVX rats also decreased TRAP activity compared to OVX rats. These results suggest that SB diets have bone sparing effects by the decrease of osteoclast activity. We also observed that OVX rats fed with SB diet (0.3% or 3%) exhibited the decrease of calcium and phosphorus in serum compared to OVX-induced rats. Therefore, SB may be beneficial for the patients of osteoporosis, especially in postmenopausal women.
The Impact of Environmental and Host Specificity in Seed Germination and Survival of Korean Mistletoe [Viscum album var. coloratum (Kom.) Ohwi]
Lee, Bo Duck ; Lee, Young Woo ; Kim, Seong Min ; Cheng, Hyo Cheng ; Shim, Ie Sung ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 710~717
DOI : 10.7732/kjpr.2015.28.6.710
Humankind has been searching for medicinal materials from various plant sources in an attempt to treat disease. Mistletoe is one indubitable plant source for these materials due to its effectiveness in treating various diseases, but it has almost disappeared from the mountainous areas of Korea due to excessive harvesting. In this study, in order to select host tree species for Korean mistletoe [Viscum album var. coloratum (Kom.) Ohwi] by seed inoculation and to clarify the effect of host specificity among various tree species were conducted for the purpose of gaining basic information for the artificial cultivation of Korean mistletoe. Almost all the seeds of Korean mistletoe germinated in vitro at the temperature of 15℃. Among host trees used in this study, Prunus mume showed the highest parasitic affinity with inoculated Korean mistletoe, compared with any other host plants. However, treatment of hormones could not increase the low survival rate of Korean mistletoe on the host trees.
Inhibition Activity of Plants on IgE-mediated Degranulation of RBL-2H3 Cells
Lee, Seung-Eun ; Jeong, Hye-Gwang ; Lee, Dae-Young ; Lee, Jeong-Hoon ; Choi, Jehun ; Kim, Geum-Soog ; Noh, Hyung-Jun ; Lee, Jae-Won ; Kim, Seung-Yu ; Ahn, Young-Sup ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 718~726
DOI : 10.7732/kjpr.2015.28.6.718
In this study, the inhibitory activities of fifty plant extracts on IgE-mediated degranulation in the rat basophilic leukemia cell line (RBL-2H3 cells) were measured; the release of interleukin (IL)-4 and β-hexosaminidase from IgE-sensitized cells treated with the plant extracts was measured; and the effects of the plant extracts on cell viability were tested. The results of the analysis of plant extracts at 20 μg/ml, including the aerial part of Magnolia sieboldii K. Koch, exhibited suppressive activities upon the release of IL-4. Furthermore, several plant extracts including methanol extracted from Lindera erythrocarpa Makino (aerial part) at the same concentration significantly inhibited the release of β-hexosaminidase. Twenty-six of the plant extracts, including methanol extract of Weigela subsessilis (Nakai) L. H. Bailey (branch), showed a cell proliferation effect of over 80% at 100 μg/ml. In conclusion, the results suggest that the leaf/stem of Geum japonicum Thunb. and the stamen/ovary of Nelumbo nucifera Gaertn., which exhibited effective inhibition on β-hexosaminidase release and IL-4 release from mast cells and showed high cell viability, could be useful candidates as anti-allergy materials.
Downregulation of Cyclin D1 by Sophorae Flos through Proteasomal Degradation in Human Colorectal Cancer Cells
Lee, Jin Wook ; Park, Gwang Hun ; Eo, Hyun Ji ; Jeong, Jin Boo ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 727~733
DOI : 10.7732/kjpr.2015.28.6.727
Although Sophorae Flos (SF) has been reported to exert an anti-cancer activity, molecular targets and mechanisms associated with anti-cancer activity of SF have been unclear. Because cyclin D1 has been regarded as an important regulator in the cell proliferation, we focused cyclin D1 and investigated the effect of SF on the cyclin D1 regulation in light of elucidating the molecular mechanism for SF’s anti-cancer activity. The treatment of SF decreased cellular accumulation of cyclin D1 protein. However, SF did not change the level of cyclin D1 mRNA. Inhibition of proteasomal degradation by MG132 attenuated SF-mediated cyclin D1 downregulation and the half-life of cyclin D1 was decreased in the cells treated with SF. In addition, a point mutation of threonine-286 to alanine attenuated SF-mediated cyclin D1 downregulation. Inhibition of ERK1/2 by a selective inhibitor, PD98059 suppressed cyclin D1 downregulation by SF. From these results, we suggest that SF-mediated cyclin D1 downregulation may result from proteasomal degradation through its threonine-286 phosphorylation via ERK1/2. SF-induced proteasomal degradation of cyclin D1 might inhibit proliferation in human colorectal cancer cells. The current study provides information on molecular events for an anti-cancer activity of SF
Flavor Characteristics and Consumer Acceptance of Yacon (Smallanthus sonchifolius Poepp & Endl) Leaf Tea by Different Processes
Shin, Dong Young ; Hyun, Kyu Hwan ; Kuk, Yong In ; Shin, Dong Won ; Chun, Soon Sil ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 734~742
DOI : 10.7732/kjpr.2015.28.6.734
The purpose of this research was to find the most appropriate process for making yacon leaf tea. We applied both green tea and black tea brewing and fermenting methods for producing yacon leaf tea. This research included consumer test and descriptive analysis of professional trained panel on yacon tea tastes and flavors. Both consumer test and descriptive evaluation preferred yacon tea produced by black tea brewing and fermenting methods because it tasted less bitter and had a sweet, delicate taste. According to orthogonal transformation resulting from varimax rotation, first principal component was positively affected by black tea brewing and fermenting methods, while it was negatively affected by green tea brewing and fermenting methods. As a result, the study concluded black tea brewing and fermenting methods were appropriate for producing yacon leaf tea.
Molecular Identification of Reynoutria japonica Houtt. and R. sachalinensis (F. Schmidt) Nakai Using SNP Sites
Park, Hana ; Yoon, Chang Young ; Kim, Jin Sook ; Kim, Joo-Hwan ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 743~751
DOI : 10.7732/kjpr.2015.28.6.743
Reynoutria japonica and R. sachalinensis have been used as medicinal resources in Korea. However, it is difficult to identify and determine these medicinal herbs correctly because they are usually customized and purchased as the fragmented rhizomes types. To develop molecular markers for distinguishing two species, we analyzed and compared the chloroplast DNA sequences of seven loci (atpB, matK, ccD-psaI, atpF-H, trnL-trnF, psbK-I and rpl32-trnL). Among them, we found two effective SNPs in psbK-I region for R. japonica and atpF-H region for R. sachalinensis. Based on these SNP sites, we designed the new R. japonica- specific primer which is able to amplify 300 bp fragment in psbK-I region. A similar strategy was applied for the atpF-H region of R. sachalinensis. These molecular markers would be successfully applied to recognize R. japonica and R. sachalinensis.
Synergistic Anti-diabetic Effect of Cirsium setidens Combined with Other Plants in vitro and in vivo
Huifang, Guo ; Jiang, Yunyao ; Wang, Myeong-Hyeon ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 752~758
DOI : 10.7732/kjpr.2015.28.6.752
The anti-diabetic effect of Cirsium setidens water extract and the combinations with Bletilla striata, Cymbidium kanran, and Sparganium stoloniferum Buch.-Ham. ethanolic extracts had been studied. The combination of four extracts (3:1:1:1) showed larger anti-diabetic activity in vitro and in vivo. It is notable that the single water extract from C. setidens exhibited more effective anti-diabetic effect than most of the combinations. We also investigated whether fermentation process was promoted the anti-diabetic activity. The data suggested the fermentation product of combination of four extracts (3:1:1:1) exhibited the strongest activity both in vitro and in vivo, which was higher than the non-fermented group. The result indicated the fermentation and the appropriate combination of extracts enhanced the anti-diabetes activity.
Barley Malt Treated with Enzymes Increases Polyphenol Content and Antioxidant Activity
Phouthaxay, Phonesavanh ; Yu, Chi Young ; Pang, Yeon Gyu ; Salitxay, Timnoy ; Kim, Sang Heon ; Park, Cheol Ho ;
Korean Journal of Plant Resources, volume 28, issue 6, 2015, Pages 759~766
DOI : 10.7732/kjpr.2015.28.6.759
The purpose of this study was to improve the functionality of a healthy drink with examining the possibility of manufacturing different enzymes (alpha-, beta-, glucose-amylase) in barley malts (BM) produced in various malting periods. The study showed that enzyme treatment increased significantly total polyphenol content (TPC), DPPH radical scavenging activity and hydroxly radical scavenging activity in malted liquid samples (MLS) which obtained from various malting periods. The highest of TPC were found in Gluco-24M with 1.981 mgTAE/ml, followed by Beta-24M and Alpha-72M with 1.878 mgTAE/ml and 1.845 mgTAE/ml, respectively. The DPPH result revealed that percent of inhibition increased by 71-75% compared to the control. No statistical difference was found between MLS obtained by 24 hr of malting (24 M) and 72 hr of malting (72 M) after enzyme treatment. In addition, an increasing of hydroxyl radical was in the same trend to the TPC and DPPH. The hydroxyl radical scavenging activity of enzyme treated samples was 1,5 times higher than the control. These results suggest the possibility of enzyme application to barley malts obtained in various germination periods for improving quality and functionality of barley malts.