• Korean Journal of Plant Tissue Culture
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• v.26 no.1
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• pp.7-14
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• 1999

In order to survey anthraquinone productivity from in vitro root culture, transformed hairy roots of Rumex crispus were induced from leaf segments by infection with Agrobacterium rhizogenes strain $A_4$ and compared with adventitious roots. The optimum condition of adventitious root formation from leaf segments was 5 $\mu$M NAA added to MS medium. Mannopine was detected in the extract of hairy roots by paper electrophoresis, but not in adventitious roots. Secondary root tips of both adventitious roots and hairy roots elongated without lateral root branching in hormone free MS medium, but primary root tips showed more rapid growth with extensive lateral root branching. MS basal medium was the best for growth of the adventious roots and hairy roots for anthraquinone content. Adventitious root tips and hairy root tips cultured in liquid MS medium supplemented with 0.05 $\mu$M NAA and 0.1 $\mu$M kinetin (contained 5% sucrose) showed the maximal growth and anthraquinone content. Anthraquinone content of hairy roots was increased by the culture periods, but was reduced after 25 days of culture.

• Journal of Ginseng Research
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• v.22 no.4
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• pp.289-293
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• 1998

Six-year-old ginseng roots were divided into rhizome, main root (epidermis, cortex and xylem) and lateral root (big tail root, mid tail root and fine tail root) and the concentration levels of soluble dietary fiber (SDF) and insoluble dietary fiber (IDF) in each part of the ginseng were investigated. The amount ratios of SDF to IDF (SDF/IDF) in various parts of the ginseng root were also compared. The concentration levels of SDF and IDF in the ginseng root were 6.56% and 15.41 %, respectively, where the level of SDF in main root was a little higher than that of lateral root. However the amount of IDF in main root was lower than that of lateral root. The SDF/IDF was highest in main root, 0.513, which was higher than that of lateral root or rhizome. The SDF/IDF was 0.704 in xylem, 0.478 in cortex, and 0.099 in epidermis of the main root and the SDF/IDF was 0.576 in big tail root, 0.463 in mid tail root, and 0.255 in fine tail root of the lateral root. It has been reported that SDF might have preventive effects on diabetes, obesity, high blood pressure, colon and rectum cancers, while IDF might have preventive effects on constipation. Therefore, main root of six-year- old ginseng root is thought to have a little different physiological activity from lateral or fine tail roots.

• Journal of Forest and Environmental Science
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• v.26 no.3
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• pp.193-202
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• 2010

To analyze the effects of tree roots on the stability of damage slope, distributional and physical properties of five-year Pinus densiflora roots were investigated. In the composition of roots, the proportion of main root to lateral root was 1 to 9 in slope condition. Root tensile force was increased in accordance with increased proportion to diameter of Pinus densiflora roots. However, tensile strength was decreased in proportion to diameter of roots. Root shear strength showed that soil containing Pinus densiflora roots was higher than that of non-treated soils. This result shows that Pinus densiflora roots significantly stabilize the surface-soil rather than sub-soil in damage slopes.

• Journal of Korean Neurosurgical Society
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• v.47 no.5
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• pp.358-364
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• 2010

Objective : Morphometric data on dorsal cervical anatomy were examined in an effort to protect the nerve root near the lateral mass during posterior foraminotomy. Methods : Using 25 adult formalin-fixed cadaveric cervical spines, measurements were taken at the lateral mass from C3 to C7 via a total laminectomy and a medial one-half facetectomy. The morphometric relationship between the nerve roots and structures of the lateral mass was investigated. Results from both genders were compared. Results : Following the total laminectomy, from C3 to C7, the mean of the vertical distance from the medial point of the facet (MPF) of the lateral mass to the axilla of the root origin was 3.2-4.7 mm. The whole length of the exposed root had a mean of 4.2-5.8 mm. Following a medial onehalf facetectomy, from C3 to C7, the mean of the vertical distance to the axilla of the root origin was 2.1-3.4 mm, based on the MPF. Mean vertical distances from the MPF to the medial point of the root that crossed the inferior margin of the intervertebral disc were 1.2-2.7 mm. The mean distance of the exposed root was 8.2-9.0 mm, and the mean angle between the dura and the nerve root was significantly different between males and females, at $53.4-68.4^{\circ}$. Conclusion : These data will aid in reducing root injuries during posterior cervical foraminotomy.

• The korean journal of orthodontics
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• v.27 no.5 s.64
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• pp.697-709
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• 1997

This study was designed to investigate the stress intensity and distribution produced by 1mm activation of retraction archwire with $0^{\circ},\;7^{\circ},\;14^{\circ}$ torque and application of high polk J-hook headgear during retraction of four maxillary incisors using the photoelastic stress analysis. The photoelastic model was made with a PL-3 type epoxy resin which was substituted by alveolar bone portion. Each retraction archwire was fabricated from .020' X .025' stainless steel wire which had vertical loops in 7mm height and hooks for high pull J-hook headgear between central and lateral incisors. The high pull J-hook headgear was applied 35 degree backward and upward to occlusal plane with 200gm pet each side The findings of this study were as follows: 1. In case of $0^{\circ}$ torque, the stress was distributed from cervical 1/8 to apex of roots of central and lateral incisors which were the forms of arc mode. When the high pull J-hook headgear was applied, the stress distributed by arc mode was presented from cervical 1/2 to apex of roots of central and lateral incisors. And the stress distributed by following the root surface was presented from alveolar crest to cervical 1/2 of roots of central and lateral incisors. The stress between apecies of central and Lateral incisors was presented also. 2. In case of $7^{\circ}$ torque, the stress distributed by arc mode was presented from cervical 1/2 to apex of roots of central and lateral incisors. And the stress distributed by following the root surface was presented from alveolar crest to cervical 1/2 of roots of central and lateral incisors. When the high pull J-hook headgear was applied, the stress distributed by following the root surface was presented mote apically than without headgear. The stress between apecies of central and lateral incisors was presented also. 3. In case of $14^{\circ}$ torque, the stress distributed by following the root surface was Presented from alveolar crest to apex of roots of central and lateral incisors. When the high pull J-hook headgear was applied, the stress distributed by following the root surface was presented stronger than without headgear The stress between apecies of central and lateral incisors was presented also.

• Korean Journal of Medicinal Crop Science
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• v.13 no.1
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• pp.6-10
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• 2005

Lateral roots of soybean sprouts should deeply affect their quality and marketability. The study was done to compare the effects of ocher, chitosan, corn kennel, tea (Thea sinensis L.) and hard rubber tree (Eucommia ulmoides Oliver) leaf extracts on lateral root formation, growth and morphological characters of the sprouts. Seeds of three cultivars, Pungsannamulkong, Sowonkong and Junjery, were imbibed for 5 hours into their 10% solutions and cultured for 6 days. The cultured sprouts were classified into 4 categories to calculate their composition rates on the base of hypocotyl lengths;>7 cm (A), 4 to 7 cm (B), < 4 cm (C) and not germinated (D), and their morphological characters, fresh and dry weights were measured. Composition rate of A was the lowest in Junjery of the three cultivars, while that of C showed reverse result compared to A. This results was the most distinct in hard rubber tree leaf extracts (HRTLE) of the five treatments. In HRTLE treatment, lateral root formation rate were formed in almost of Sowonkong although reduced in order of Pungsannamulkong and Junjery. However, there was no significant difference between the other treatments. Lateral roots per sprout were the lowest in HRTLE treatment of the 5 treatments. In all treatments except the chitosan treatment, the roots were most formed in Sowonkong but least in Junjery. Sprout length adding hypocotyl and root was the shortest in Junjery compared to the other two cultivars. and was the longest in tea leaf extract treatment but the shortest in HRTLE treatment. The result in total fresh weight of sprouts was similar to that of the sprout length.

• Journal of Bio-Environment Control
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• v.17 no.1
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• pp.14-19
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• 2008

The experiment was investigated the effects of lower root zone temperature on shoot and root growth of 'Akihime' strawberries in aeroponics in cold season. Root growth was decreased with decrease of root zone temperature, especially in lateral roots. Elongation of main roots was highest in $18^{\circ}C$ of root zone temperature. Number of lateral roots and length of lateral roots were lowest in $8^{\circ}C$ of root zone temperature. Lower root zone temperature resulted significantly in decrease of fresh weight of root and shoot and leaf area of strawberry. But there were no significant statistical differences in shoot fresh weight and leaf area in $8^{\circ}C$ and $13^{\circ}C$ of root zone temperature. Leaf length, leaf width and number of leaves of strawberry were decreased in lower root zone temperature. The results of this experiment will be utilized in the winter season cultivation for strawberry in hydroponics.

• Korean Journal of Medicinal Crop Science
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• v.22 no.1
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• pp.17-22
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• 2014

Ginsenosides of roots in Panax ginseng were analyzed by metabolic-targeting HPLC using the partial least squares discriminant analysis (PLS-DA) and compared depending on sowing methods between direct seeding and transplanting method. Score plots derived from PLS-DA could identify the sowing method between the direct seeding and transplanting method in P. ginseng roots. The ginsenoside compounds were assigned as Rg1, Re, Rf, Rg2, Rb1, Rc, Rb2, Rb3, and Rd. Contents of Re, Rf, Rg2, Rb1, Rc, Rb3, and Rd of main roots produced from the transplanting method were relatively higher than those of samples produced from direct seeding method. Also, contents of Rg1, Re, Rf, Rg2, Rb1, Rc, Rb2, Rb3, and Rd of lateral roots from the transplanted samples were relatively higher than those of samples produced from direct seeding method. Therefore, HPLC with PLS-DA analysis can be a straightforward tool for identification of ginsenosides in main or lateral roots of P. ginseng obtained from two different seeding methods between direct and transplanting methods.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.48 no.4
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• pp.292-296
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• 2003

The lateral root formation in soybean sprout culture declines its quality. This study was done to measure the effect of fluorescent light treatment during 24 hour imbibition and 6-day culture on seed germination and growth of soybean sprout. After 6 day culture, the sprouts were sorted as normal (＞4cm), abnormal (＜4cm) and non-germination by their hypocotyl lengths, and lateral roots, fresh and dry weights were measured. Lateral roots were less formed in the fluorescent light treatment lasted during the whole period of the imbibition than in the treatment for 50 minutes a day during the culture. The fluorescent light treatment during the imbibition mainly affected the germination and growth compared to the treatment done during the culture. Compared to the dark imbibition, the light treatment during the imbibition resulted in more normal sprouts, thicker diameters of hypocotyl and hook, and more fresh weights in cotyledon, hypocotyl, whole sprout, and economic yield. However, these results were reverse in lengths of hypocotyl and root, and fresh and dry weights of roots. It is concluded that the fluorescent lamp mainly irradiating red and blue lights can be used for the sprout production as an alternative light replacing blue and red lights treated during the imbibition because it blocked the lateral root appearance and stimulated growth of the sprout.

• Journal of Ginseng Research
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• v.20 no.3
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• pp.248-255
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• 1996

This study was devised to observe in vitro, the inhibitory effects of acidic polysaccharide fractions from Korean red ginseng (KRG) and white ginseng (KWG) on the lipolytic action of loxohormone-L and on angiotensin converting enzyme (ACE, peptidyldipeptidase hydrolase, EC 3.4.15.1) . The crude acidic polysaccharides (CAP) extracted from main and lateral roots of KRG and KWG were separately purified through several procedures. The total inhibitory activities on the lipolytic action of toxohormone-L of CAP from main roots of KRG and KWG was higher than those of CAP from lateral roots of KRG and KWG, respectively, and that of CAP from main root of KRG was 3.1 times higher than that of CAP from main root of KWG. The specific activity of CAP from main root of KRG was measured as 5.40 units/mg, when one unit was defined as the amount giving 50% inhibition on toxohormone-L induced lipolysls. A subfraction named PG4 3 obtained by replanted chromatography on DEAE-TOYOPEARL 650M gave the specific activity of 24.4 units/mg. On the other hand, it was found that the total inhibitory activity on ACE of CAP from lateral root of KRG was the highest among the 4 kinds of CAP, but the specific activity of CAP from lateral root of KWG was the highest.