• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.134-134
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• 2022

Mungbean is used for not only seed but sprout, so, consumption of mungbean has been on the rise in Korea. Life cycle of mungbean tends to be short among Legume. For that reason, Mungbean can be harvested for various cropping system and season per regions and farmers regardless of sowing date and harvesting date. So, Prior research is needed about growth characters and life cycle of mungbean per sowing period. Mungebean cultivar 'Dahyun' and 'Sanpo' supplied by Korea Agriculture Technology Promotion Agency(KOAT) is cultivated in wagner pot. Sowing period is proper time of seeding in Jeollanam-do and Gyeongsangnam-do that is major cultivation region of mungbean in korea from early May to mid July every 2 weeks. Length at maturity stage tends to increase from early May(sowing date: 4^th May) to early July(sowing date: 5^th July), but after that, It tends to decrease from mid July(sowing date: 19^th July). Number of branches and nods shows a similar trend. Length of pod has no tendency and no difference per sowing date. Number of pod per plants has also no tendency per sowing date. Test plots sowing in late May has the most number of pods.(Sanpo 22.9pods, Dahyun 16.8) Number of seeds per pod tends to increase to late May and Test plots sowing in mid July has the most number of seed per pod. In case of sowing at early May, Days of emergence is 7d. its summation of temperature is 132.2℃. After that, it tends to decrease to mid June. After mid June, Days of emergence is fixed to 3d. Average temperature growing up in this season, Summation of temperature from sowing to emergence takes the lowest point in test plots sowing in mid June.(Sanpo 88.6℃, Dahyun 88.6) Days of flowering tends to fasten from early May to mid July. Two cultivar shows same level. Days of maturity tends to fasten to mid June, after that tends to slow. In case that many research results about growth characters and life cycle mungbean per sowing period are drawn, it is expected that it result in increase of cultivation area and income of farmer.

• Applied Biological Chemistry
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• 제46권1호
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• pp.50-54
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• 2003

호장근에서 분리한 emodin은 VEGF로 유도된 혈관신생의 한 단계인 혈관내피세포의 이동을 강하게 억제하였다. 또한 emodin은 혈관내피세포 이동을 억제시킨 $0.1\;{\mu}g/ml$ 농도에서 시험관내 혈관신생을 억제하였으며, 그 효과는 농도의존적인 양상을 보였다. 생체내 혈관신생 모델인 CAM assay에서도 emodin은 혈관신생을 억제하였다. 이러한 결과는 emodin이 현재까지 보고된 여러 가지 생리활성 이외에 혈관신생 억제활성을 가지고 있다는 사실을 보여주는 것이다. 따라서 emodin을 함유하고 있는 호장근은 혈관신생 관련 질환에 대한 천연물 유래 치료제의 개발을 위한 중요한 식물자원으로 활용될 수 있을 것이다.

• 한국미생물·생명공학회지
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• 제35권4호
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• pp.357-363
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• 2007

249 fungal strains were isolated from the roots of 26 plants, and the production of GAs was spectrophotometric ally examined. As a result 76 fungal strains were shown to produce GAs. Bioassay of culture broth from seventy six fungal strains producing GAs was carried out with waito-c rice, that is dwarf rice. The seventy six fungi with GAs-producing activity were incubated for seven days in 40 mL of Czapek's liquid medium at $30^{\circ}C$ and 180 rpm, and the culture broth of fungi were treated on the 2-leaf rice sprout. Fifteen of these showed plant growth promoting activity and the amount of each GAs in the medium was measured by Gas chromatographymass spectrometer (GC-MS). Nine of these fungi were also identified by genetic analysis of the nucleotide sequences in the internal transcribed spacer region of the ribosomal DNA.

• 농업과학연구
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• 제44권2호
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• pp.261-271
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• 2017

The aim of this study was to investigate the amount of glucosinolates (GSLs) in kale sprouts (Brassica oleracea L. var. acephala) ('TBC') according to different concentrations of sulfur ions in sprout's nutrient solutions (0.0, 0.5, 1.0, and 2.0 mM) and to different light sources [Fluorescent lamp, Red, Blue, and Mix (R+B) LED]. Kale sprouts were cultivated in a growth chamber for 13 days in sulfur solutions. Kale sprouts were treated with fluorescent lamp and LED light sources for 5 days, from eight days after sowing to harvest. Amount of seven types of GSLs (progoitrin, sinigrin, 4-hydroxyglucobrassicin, glucobrassicin, 4-methoxyglucobrassicin, gluconasturtiin, and neoglucobrassicin) were measured in kale sprouts after harvest. The total GSL content was influenced by different sulfur solution concentration, and it was the highest at S 0.5 mM ($172.54{\mu}mol{\cdot}g^{-1}DW$) and the lowest at S 2.0 mM ($163.09{\mu}mol{\cdot}g^{-1}DW$). The GSL content was influenced by different light source, and it was the highest with Red LED ($159.23{\mu}mol{\cdot}g^{-1}DW$) and the lowest with Blue LED ($147.57{\mu}mol{\cdot}g^{-1}DW$). As the sulfur solution concentration increased under all light source, progoitrin and sinigrin contents tended to decrease while glucobrassicin content showed an upward tendency for all of the light sources. The content of glucobrassicin was higher than that of progitrin when treated with sulfur solutions for all LED light sources. Sinigrin, which has excellent anti-cancer effects, showed the highest rate (92.2%) among all the GSLs, under all of the light sources.

• Journal of Microbiology and Biotechnology
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• 제15권1호
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• pp.22-28
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• 2005

Gibberellins (GAs) play important roles in plant growth and development. Fifty-four fungi were isolated from the roots of 4 kinds of Sesamum indicum plants, and the production of GAs was spectrophotometrically examined. The number of GA-producing fungi was two strains from S. indicum, four strains from Gold S. indicum, and five strains from Brown S. indicum. Eleven fungi with GAs-producing activity were incubated for seven days in 40 ml of Czapek's liquid medium at $25^{\circ}C$ and 120 rpm, and the amount of each GA in the medium was measured by gas chromatographymass spectrometery (GC-MS). Penicillium commune KNU5379 produced more $GA_3$, $GA_4$, and $GA_7$ than Gibberella fujikuroi, Fusarium proliferatum, and Neurospora crassa which are known as GAs-producing fungi. GAs-producing activity of the P. commune KNU5379 was shown to produce 71.69 ng of $GA_1$, 252.42 ng of $GA_3$, 612.00 ng of $GA_4$, 259.00 ng of $GA_7$, and 202.69 ng of $GA_9$ in 25 ml of liquid medium. Bioassay of culture fluid of GA-producing fungi was also performed on rice sprout.

• 한국환경복원기술학회지
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• 제2권4호
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• pp.1-8
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• 1999

Forest devastation in Korea was caused by several factors such as internal factors from geological features and external factors from artificial forest damages including fuel wood collection from forests, forest fires, shifting cultivations and so on. According to the reports of 1935, lots of forest devastation in Kyungpook province area occurred around the main and branch stream of Nakdong river. Main factors of occurring forest devastation in 1935 were investigated by the methods of forest devastation rate and the population density at the basin of Nakdong river. But based on our study, forest devastation mainly occurred in rock zones of granite and granite gneiss, next to Nakdong formation but scarcely occurred in Hayang formation. Clay of the weathered soils of granite and granite gneiss was lost by rainfall, but remaining coarse-sandy soils(or grits) have poored conditions in vegetation's growth, which are due to high level of water permeability, lack of water-holding capacity and dried conditions. Generally, pine forests are mainly growing up in these regions. It is supposed that forest devastation was accelerated due to long periods of natural regeneration and no ability of natural regeneration by sprout after frequent collections of fuel wood and cuttings from pine forest on those grit areas. These results indicated that the high rate of forest devastation occurred around the basin with the high resident population density, which was partly due to forest damages by fuel collection. Moreover, both geological features and number of residents had much influence on forest devastation. Forest devastation was positively correlated with those variables(r=+0.73).

• Journal of Plant Biology
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• 제5권2호
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• pp.13-16
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• 1962

Without annual ring, the bamboo can not measured by ordinary mensuration method. Other methods yet tried failed to prove the reliability. That means, as often pointed out, that the bamboo lumbering (including forest management) is not free from being precarious. Noting the fact, this author performed a serieds of comparative observations on a group of bamboos in different stages of growth in order to find out if there is any surer mensurability. A conclusion has been reached that the external feature of joints of branch has close connection with the age of bamboo, that the joints of the third major branch counting from the ground have, as shown in the first table, the most probability, its mean being 94.3 per cent, and that those in ages of 3 to 5 have the probability of 100 per cent, showing the far greater accuracy as compared with those in older ages. The above conclusion needs to be adjusted with the following findings; 1) When observed disregarding the joint-tongue(the remainder of the preceeding year's sheath), the major branches show no better probability than the minor ones. 54 to 78 per cent of them shows no difference between them. Probability is averaged by 60 per cent. 2) When in spring the old sheaths drop away from the joints, the new ones sprout out in their places and consequently the joints present an appearance of a kind of joint-ring. But since this joint-ring does not always exactly represent the plant age, some other method must be sought after to count the age. This author noticed what is called "joint-tongue" the tongue-like part of triangle shape which remains at the base of the sheath of the fallen leaf. A fact was ascertained that when the number of the joint-ring coincides with that of the remaining joint-tongue, it exactly indicates the age of the plant.the plant.

• 한국동물학회지
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• 제39권1호
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• pp.54-64
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• 1996

Xenopus를 사용하여 후각원판이 정상적인 상태에서 어떠한 과정을 거쳐 발달하는지 연구하였다. 특히 뉴런의 형태적 분화, 초기 발달과 성숙 양상, 축색과 원시전뇌의 접촉 등에 초점을 맞추었다. 후각원판은 stage 23에 외배엽이 두터워진 형태로 처음 나타나는데, 쌍을 이루며 각각은 표피측에 비신경층(NNL)과 안쪽의 신경층(NL)의 두 층으로 되어 있다. stage 26 후에 원판 세포는 NNL세포 틈을 비집고 상피쪽으로 이동하기 시작하며, stage 28이 되면 선단 돌기가 표피 끝에 도달한다. stage 29/30에는 NL의 기부에서 기부 돌기(미래의 축색)가 나타나 stage 32무렵 종뇌에 도달한다. 시냅스는 stage 37/38에 처음 나타난다. 일부 원판 세포들이 후각 뉴런으로 분화하는 동안 많은 원판 세포들은 기저세포로서 후각상피에 그대로 남아 있다. 연구 결과는 뉴런 외배엽의 NL에서 기원하고 지지세포는 NNL층에서 기원함을 보여주었다. 또한 시냅스 형성 전에 뉴런의 분화가 완성됨으로써 후각뉴런의 분화는 뇌의 발달과 독립적으로 일어나며 뇌의 영향을 받지 않는다는 사실을 알 수 있었다.

• KSBB Journal
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• 제18권1호
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• pp.25-29
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• 2003

더덕의 메탄올 추출물(CL-ex)이 혈관신생에 영향을 주는 지의 여부를 알아보기 위하여, 인간태반 정맥내피세포와 돼지 폐동맥내피세포를 이용하여 실험하였다. 실험 결과, 더덕추출물은 FGF에 의해 유도된 시험관 내 혈관신생을 억제하였다. 또한 더덕추출물은 내피세포의 DNA 합성에는 영향을 주지 않았으나, FGF에 의해 증가된 내피세포의 이동을 농도 의존적으로 강하게 억제하였고, MMPs의 분비 역시 감소시켰다. 이러한 결과에 의하면, 더덕에 함유된 혈관신생 억제 물질은 혈관내피세포의 이동 과정에 작용하여 그 효과를 나타내는 것이라 추정된다. 따라서 더덕은 그 발생과 진행이 혈관신생에 의존하고 있는 것으로 알려진 암 등의 질병 예방과 치료를 위한 유용한 식물자원으로 개발될 수 있음을 시사한다.

• 한국환경과학회지
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• 제1권1호
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• pp.97-126
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• 1992

Greenhouse pot experiments were conducted to evaluate the effects of lime, fly ash and ash(from rice straw) on the cadmium and lead translocation from soil to radish. The soils with low metal contents(Cd 1.52 ppd and Pb 25.37ppm) were prepared and high metal contents (Cd 8.99 rpm and Pb 50.81ppm) were prepared and amended with 0.25%, 0.5%, 1.095, 2.055 each of lime, fly ash and ash. Radishes(Raphanus satiuus) were cultivated and cropped on the soils during 25, 50 and 75 days after sprout, and then cadmium and lead contents of radishes were analyzed by roots and tops. The results obtained are as follows. 1. Lime and ash were effective in raising the soil pH, but fly ash was not effective. 2. The growth of radishes were not impaired by the cadmium and lead contamination but, impaired by soil pH 7.5 or more. 3. Cadmium was accumulated very strongly in radishes and the greater concentration was found in tops than roots, but lead showed no evidence of accumulation in radishes. 4. In general, when the concentrations of lime and ash in soils increased, the uptake of cadmium and lead by radishes decreased, and lime was more effective than ash, while fly ash revealed no effect of reducing the translocation of cadmium and lead from soils to radishes. 5. The uptake of cadmium by radishes decreased more effectively than lead and the uptake of Cd or Pb by radishes grown in the soils with high metal contents decreased more effectively than low metal con tents. 6. Cadmium and lead contents of radishes were negatively correlated with soil pH values and the relationship in cadmium content was stronger than that in lead content.