• Title/Summary/Keyword: yellow disease.

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Occurrence of Virus Diseases on Cucumber in Gyeongbuk Province (경북지역 오이에 발생하는 주요 바이러스 종류 및 발생실태)

  • Lee, Joong-Hwan;Kim, Dong-Geun;Ryu, Young-Hyun;Lee, Key-Woon
    • Research in Plant Disease
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    • v.14 no.2
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    • pp.138-141
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    • 2008
  • Cucumber is high valued cash crop, for it is grown during the winter season in plastic house. Recently, virus disease spread widely in cucumber growing area and cause severe income loss. Therefore, occurrence of virus disease on cucumber were surveyed from 2004 to 2006 in Sangju and Gunwi area, Gyeongbuk province. The rate of plastic house which has infected plants was $55.0{\sim}88.6%$. Infection rate was the highest at Sangju in 2006 than others and ranged from 15 to 90.0% per plastic house. The 217 samples showing virus symptom were analyzed by RT-PCR using appropriate detection primer. Zucchini yellow mosaic virus(ZYMV) has the highest infection rate(detected over 85%) and followed by Cucumber green mottle mosaic virus(CGMMV). But Watermelon mosaic virus-2(WMV-2) was not detected in our survey. Therefore, we conclude that ZYMV is major pathogene of virus disease on cucumber. ZYMV induced chlorosis and severe mosaic on the leaves and distortion on the surface of fruits.

The Literary study on Flaccidity-syndrome (위증에 대한 문헌적 고찰)

  • Kwak, Joong Moon;Oh, Min Suk
    • Journal of Haehwa Medicine
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    • v.9 no.1
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    • pp.661-689
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    • 2000
  • We came to the conculsion after considering all of information from many kinds of books on the cause, pathogenesis and treatment of Flaccidity-syndrome. The results were as follows : 1. Flaccidity-syndrome means limb-relaxation due to muscle atony that isn't able to constraction. It's begun as mild degree from extremities, in some cases ended to quadriplegia or expire. 2. Cause factor and pathogenesis of Flaccidity-syndrome is various. After Lung fluid consuption caused by heat-evil was refered in The Yellow Emperor's Canon of Internal Medicine. They were refered as cause factor that Main channel asthenia, excess of sexual intercourse, wetness-evil, heat-evil gets into the interior, asthenia of the spleen and stomach. Since Ming Dynasty, It's classified to wetness-heat evil, wetness-phlegm, deficiency of vital energy, deficiency of blood, deficiency of yin, blood stasis and indygestion, etc. 3. In the view of treatment of Flaccidity-syndrome, Yangming was selected in The Yellow Emperor's Canon of Internal Medicine, and it's been mean to clear away wetness-heat evil located at Yangming. In the method of acupuncture it was same on the base, and many skills have been used that electronic acupuncture, point-injection theraphy, acupuncture point block, catgut implantaion at acupuncture point, cutaneous acupuncture, auriculo-acupuncture and head acupuncture by the through post generation. 4. Flaccidity-syndrome was defined to weak, disuse and non-pain. Beacause it was non-pain, so medicine to expel wind-evil was prevented to use. But through post generation Flaccidity-syndrome has been treated that is able to cause pain or numness as arthralgia-syndrome. Therefore there is tendency that medicine to expel wind-evil is capable within pathological basement of Flaccidity-syndrome in recent. 5. In the view of west-medicine, Flaccidity-syndrome is diplegia or quadriplegia with sensory disorder, muscle atropy in some cases. And there are spinal disease, peripheral nerve disease, muscular disease, nerve-muscle copula disease. The symptoms are able to amyotomia, numness, sensory disorder, pain.

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First Description of Coleosporium plectranthi Causing Perilla Rust in Korea

  • Yun, Hye-Young;Kim, Young-Ho;Hong, Soon-Gyu;Lee, Kyung-Joon
    • The Plant Pathology Journal
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    • v.23 no.1
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    • pp.7-12
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    • 2007
  • Perilla rust is a damaging disease in perilla cultivation in Korea. Its causal agent was identified as Coleosporium plectranthi based on descriptions of morphological characteristics of spores and spore-producing fruiting structures(in uredinial and telial stages from perilla and in aecial stage from the alternate host pine) collected in 15 locations in Korea during the disease survey from 2004 to 2006. These characteristics were yellow or orange uredinium; globose or ellipsoid urediniospore of $20.8{\mu}m{\times}18{\mu}m$ in size; verruca of $0.3mm{\times}1.2mm$; orange telium; one-celled, oblong ellipsoid teliospore of $63.1{\mu}m{\times}19.7{\mu}m$ with one-layered crusts or four-celled(when mature), internal basidium of $64.2{\mu}m{\times}19.7{\mu}m$; ellipsoid to globoid basidiospore of $20.3{\mu}m{\times}12{\mu}m$; type 2 spermogonium; yellow, broadly ellipsoid peridial cell of $35.6{\mu}m{\times}23.1{\mu}m$; and broadly ellipsoidal or subglobose aeciospore of $25.9{\mu}m{\times}18.8{\mu}m$. Phylogenetic analysis of 28S rDNA sequences revealed the closest relatedness to those of the genus Coleosporium, a monophyletic group distinguished from other rust fungi and divided into two main lineages, one of which was C. plectranthi grouped with high bootstrap value(96%). In pathogenicity test, both aeciospores and urediniospores caused rust development on perilla leaves. This is the first description of C. plectranthi causing perilla rust with the first findings of its telial stage on perilla and the first rust disease on the aecial host in Pinus densiflora. These aspects would provide basic information for the development of control measures of the disease.

Outbreak of Rust Caused by Coleosporium asterum on Solidago virgaurea var. gigantea in Ulleung-do

  • Back, Chang-Gi;Nam, Gu-Youn;Lee, Seung-Yeol;Jung, Hee-Young
    • Mycobiology
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    • v.42 no.1
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    • pp.79-81
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    • 2014
  • From June to October 2012, severe outbreaks of rust disease on Solidago virgaurea var. gigantea were observed in 5 different regions of Ulleung-do, Korea. Typical rust symptoms appeared as yellow spots, uredinia on leaves, and massive urediniospores covering the entire plant. Severely infected plants became discolored and died. On the basis of its morphological and molecular characteristics, the causal agent was identified as Coleosporium asterum. This pathogen has been reported as rust disease on S. virgaurea in the Canada and United States. In Korea, rust disease on S. virgaurea var. gigantea was reported as Uromyces rudbeckia in 1992. To the best of our knowledge, C. asterum is a novel rust pathogen on S. virgaurea var. gigantea in Korea.

Selection Efficiency of Resistant Tobacco Plants to Bacterial wilt Disease Using Two Haploid Methods (반수체 육종법을 이용한 잎담배 세균성마름병 저항성 개체 선발의 효율성 비교)

  • 정윤화
    • Journal of the Korean Society of Tobacco Science
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    • v.15 no.2
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    • pp.137-144
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    • 1993
  • The present study was conducted to compare the efficiency of individual plant selection for resistance to bacterial wilt with 30 dihaploid lines derived by anther culture and Nicotiana africana method in Fl and F2 generation from a cross between Bright Yellow 4 (BY4) and NC95. F2 dihaploid lines were selected from bacterial wilt disease resistant plants screened under the naturally infested filed conditions. The populations of FB - ADH and FB MDH derived from F2 individual plants with bacterial wilt resistance showed higher resistance to the disease than the populations of Fl - ADH and Fl - MDH, respectively, and no difference for the disease resistance appeared by the haploid deriving method within a generation.

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A Study on Baihe Disease(百合病) Texts in "The Esseence of the Synopsis of the Golden Chamber" ("금궤요략심전" 백합병(百合病) 조문에 대한 연구)

  • Li, Xian-Lan;Lee, Yong-Bum
    • Journal of Korean Medical classics
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    • v.20 no.1
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    • pp.1-10
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    • 2007
  • "The Essence of the Synopsis of the Golden Chamber" is an annotated book on the "Synopsis of the Golden Chamber" written by You-Yi(尤怡) of the Qing Dynasty (1729). Chapter 3 of this annotated book contains explanations of BaiheDisease(百合病). You-Yi(尤怡) maintained that the cause of Baihe-Disease(百合病) is a deficient-type fever(虛熱) induced by lung-fluid deficiency(肺陰不足). Generally, a higher fever led to a worse prognosis, and this disease was mainly treated by supplement methods(補法). In his pharmacological explanations, You-Yi(尤怡) often used the analogical inference of the five evolutive phases(五行歸類), and he frequently quoted "The Yellow Emperor's Canon of Internal Medicine(黃帝內經)" and "The Medical Secret of an Official(外臺秘要)" to explain the texts.

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Growth Characteristics and Grain Quality of Naked Barley Infected by Barley Yellow Mosaic Virus (보리호위위병(BaYMV)이병에 따른 쌀보리 품종의 생육특성 및 품질)

  • 이중호;김양길;서재환;박종철;최재성;김수동
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.48 no.6
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    • pp.501-505
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    • 2003
  • The growth characteristics and damage of naked barley infected with barley yellow mosaic virus (BaYMV) were investigated between resistant and susceptible varieties in habitual field plot of BaYMV BaYMV of the barley plants with typical disease symptom were identified by enzyme linked immunosorbent assay (ELISA) test. The visual degree (0-9) based on disease symptoms of BaYMV was different as 9 and 1 between susceptible variety Baegdong and resistant variety Naehanssalbori, respectively. Susceptible variety, Baegdong showed significant damage in culm length, number of kernel per spike and tiller per square meter but not in 1,000 kernel weight, so these results caused yield reduction to only 80% comparing to the control. Seed germination did not affected by BaYMV infection both in susceptible and resistant variety. In grain quality test, abortive grain yale and crude protein content were significantly increased compared to the control. The relationships between BaYMV infection and growth characteristics showed the negative correlations in culm length, number of tiller, 1000 kernel weight and yield, but it showed the positive correlation in crude protein contents. These results implied that BaYMV can affect not only barley growth and yield but grain quality.

The Clinical Study of Tongue Change in Diabetes Mellitus Patients as Oriental Diagnostic Method (糖尿환자의 27例의 舌診에 關한 臨床 硏究)

  • Seo, Gan-soo;Kim, Dong-woung
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.12 no.2
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    • pp.212-221
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    • 1999
  • Tongue examination is the most unique and important diagnostic method of oriental medicine. It reveals patients condition and give some information about direction of therapy and background of disease as well as produces clue of duration of disease changing that grasps it from outside. The aims of this study show that results of tongue examination is related to somewhat special pattern. we study 27 patients(age of means: 63.01 years old, male: 14, female: 13) who come to Wonkwang University Oriental-Medicine Hospital at Chonju with diabetes mellitus or diabetes mellitus complications. Tongue colors of this study result in pale-red 8 cases, pale 6 cases, red 6 cases, crimson 5 cases, blue-green-purple 2 cases and tongue fur of this study result in white-fur 16 cases, yellow-fur 7 cases, black-fur 1 case, none-fur 3 cases. And the condition of tongue fur with grimy and thin result in thin-white-fur 12 cases, white-grimy-fur 4 cases, thin-yellow-fur 5 cases, grimy-yellow-fur 2 cases, black-fur 1 case. Means level of fasting glucose during 7 days was $223.24{\pm}32.l7mg/dl$ and postprandial 2hours was $286.37{\pm}24.54mg/dl$ There were no changes in tongue body and tongue color but changes occur in tongue fur with 9cases in this period. 5 cases of patient make a difference between FBS(fasting blood glucose) and postprandial blood glucose level more than l00mg/dl (2 cases of patient with thin-white-fur gradually turned to slight-yellow-fur. There were no changes in 2 cases of patient with crimson-none-fur and pale-white-fur. 1 case of patient with slimy-yellow-fur turned to black fur.) 11 cases of patient had lesser than $10\%$ hemoglobin $A_lC$ and tongue color of these patient were pale-red 5cases, pale 2 cases, red 2 cases, crimson 2 cases. 16 cases of patient had more than $10\%$ Hemoglobin $A_1C$ and tongue color of these patients were pale-red 3 cases, pale 4 cases, red 4 cases, crimson 3 cases, blue 2 cases. This result shows that quantity of Hemoglobin $A_1C$ make a somewhat role in tongue color. The above results show that tongue color, fur color, condition and change of fur in diabetes mellitus patients is various in pale-red, pale, crimson, none-fur. So it is difficult to give an exact diagnosis on pathology of diabetes mellitus only with tongue examination because there are a little matches between blood glucose level, prevalence-period, short-term blood glucose regulation and tongue and fur colors.

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Microbiological Identification and Distribution of Metal Components in Suspended Particulate Matter during Yellow Sand Phenomena at TaeAn Region in 2003 (2003년 태안지역에서 황사 부유분진의 미생물학적 동정과 금속 성분 및 농도)

  • Bae, Kang Woo;Kim, Jong Ho;Kim, Youn Seup;Park, Jae Seuk;Jee, Young Koo;Lee, Kye Young
    • Tuberculosis and Respiratory Diseases
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    • v.58 no.2
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    • pp.167-173
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    • 2005
  • Background : Airborne particles during Yellow Sand phenomena are known to be associated with the respiratory disease. The purpose of this study was to evaluate the concentration and metal component properties of Yellow Sand particles and compare with airborne microbial concentration and species in non Yellow Sand and Yellow Sand phenomena. Methods : Samplings were carried out in 2002 in Seosan, during non Yellow Sand and Yellow Sand phenomena. Samples were taken using the 8-stage Cascade impactor and metallic elements were analyzed by XRF. Those were culture on the media for bacterial and fungal culture and celline for virus. Results : The concentration of total suspended particulate matter were respectively $80.2{\mu}g/m^3$, $40.3{\mu}g/m^3$ in non Yellow Sand and Yellow Sand phenomena. The concentration of metallic elements such as Ca, Fe, Cu and Zn in Yellow Sand phenomena were higher than its in non Yellow Sand. Two bacteria, Bacillus species and Staphylococcus were grown in two periods. In both periods, several fungal spores(Mucor species, Cladosporum, Alternaria, Aspergillus, Penicillium, and Alternaria species) were identified. The differences of bacteria and fungus species not observed in Yellow Sand and non Yellow Sand. Any viruses were not isolated in between both periods. Conclusions : The concentration of total suspended particulate matter and some metallic elements in Yellow Sand phenomena were higher than its in non Yellow Sand. The difference of bacteria and fungus species was not observed in non Yellow Sand and Yellow Sand phenomena.

Resistance Evaluation of Commmercial Tomato Cultivars against Tomato yellow leaf curl virus (토마토품종의 토마토황화잎말림바이러스병에 대한 저항성 평가)

  • Ko, Sug-Ju;Kim, Hyo-Jeong;Lee, Jin-Hee;Ma, Kyung-Cheol;Choi, Duck-Soo;Park, Young-Hoon;Choi, Seung-Kook;Kim, Mi Kyeong;Choi, Hong-Soo
    • Research in Plant Disease
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    • v.22 no.4
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    • pp.297-302
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    • 2016
  • Tomato yellow leaf curl virus (TYLCV) is a viral disease causing severe economic losses on tomato. Practical prevention of the TYLCV disease is to control tabacco whitefly (Bemisia tabaci) or to cultivate TYLCV-resistant tomato cultivars, because no agrochemical products are available to control TYLCV. In this study, TYLCV resistance of the commercial tomato cultivars were evaluated using the DNA markers tightly linked to TYLCV resistance genes Ty-1 and Ty-3 and infection with the TYLCV clones mediated by Agrobacterium. In marker genotyping, resistance alleles were detected from 4 oval type tomato cultivars (Titichal, TY tinny, TY saengsaeng II, TY sense Q). Four cheery type cultiavrs (TY endorphin, TY smartsama, Tiara TY, Olleh TY) and 6 round type cultivars (TY kingdom, TY ace, TY homerun, TY altorang, Dotaerang TY winner, Styx TY). The seedling bioassay indicated that tomato cultivars of the oval type and cherry type showed consistancy in marker genotype and phenotype while slight disease symptom was observed from some round type cultivras (TY ace, TY homerun, Styx TY) with resistance marker genotype. For fruit yields, TY tinny was greater than its control cultivar Titichal in oval types, TY smartsama was greater than its control Smile in cherry type, and TY ace and TY kingdom were greater than their control Dabok. These cutliavrs can be a good choice for high-yielding TYLCV-resistant tomato cultivars.