• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2002년도 춘계학술대회
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• pp.187-187
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• 2002

• 한국농림기상학회:학술대회논문집
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• 한국농림기상학회 2016년도 추계 학술발표논문집
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• pp.181-183
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• 2016

• The Plant Pathology Journal
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• 제23권3호
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• pp.155-160
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• 2007

In order to develop chili pepper bacterial spot resistant cultivars and near-isogenic lines (NILs) to prompt the molecular mapping of the resistance gene, we have run backcross breeding program since 1994. Two resistance genes against Xanthomonas axonopodis pv. vesicatoria Bs2 from Fla. XVR 3-25 and Bs3 from our breeding line 25-11-3-2, were introduced into a land race, Chilseongcho (abbreviated to Chilseong hereafter) with good fruit guality. We report here the testing of $BC_4F_3\;to\;BC_4F_5$. We found that $BC_4F_5$ lines of the crosses were homozygous with respect to the respective genes of introduction. The lines, in which Bs2 gene was introduced, were hypersensitively resistant to both race 1 and race 3 of X. axonopodis pv. vesicatoria, whereas, those in which Bs3 was introduced were resistant to race 1.

• 식물병연구
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• 제8권2호
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• pp.78-83
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• 2002

Tobacco diseases have not been recorded until 1900s in Korea, where tobacco plants were introduced at early 1700s. Practical researches on the disease have been conducted since mid 1960s. Major ten tobacco diseases were mosaic caused by tobacco mosaic virus·potato virus Y·cucumber mosaic virus, bacterial wilt, hollow stalk, wild fire caused by angular leaf spot strain, black shank, brown spot, powdery mildew and fusarium wilt. But their annual occurrences were varied according to changes of tobacco varieties and their cultivating practices. As no useful chemicals, several biological tactics have been developed to control the viral or bacterial diseases that give significant economic damages on sustainable crop yield, but not practicable to field farming condition yet. Transgenic tobacco plants containing foreign disease resistant genes have been developed by current bio-technology, but not released to farmers yet. Though some disease-resistant tobacco varieties have been developed by the conventional breeding technology and currently used by farmers, their disease controlling efficacy have been diminished by occurrence of the new strain or race. Future research on tobacco diseases has been focused on technical development to produce high quality tobacco with less production cost, which leads Korean tobacco industry to keep its competence against foreign industry and decreasing overall market.

• The Plant Pathology Journal
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• 제31권4호
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• pp.428-432
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• 2015

Sixty-seven isolates of bacterial spot pathogen (Xanthomonas spp.) collected from six provinces of Korea were tested for the identification of their pathotypes and determination of their distribution throughout Korea in an effort to genetically manage the disease. Near isogenic lines of Early Calwonder (Capsicum annuum) pepper plants carrying $Bs_1$, $Bs_2$ and $Bs_3$, and PI235047 (C. pubescens) were used as differential hosts. Race P1 was found to be predominant, followed by race P7, and races P3 and P8 were also observed. This is the first report of races P7 and P8 in Korea. The races P7 and P8 were differentiated from the former races P1 and P3, respectively, on the basis of their ability to elicit hypersensitive reactions to PI235047.

• International Journal of Industrial Entomology and Biomaterials
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• 제9권2호
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• pp.255-259
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• 2004

Post-infectional biochemical changes due to Xanthomonas campestris pv. mori (Xcm) infection in five elite mulberry varieties viz., $S_1$, $S_{1635}$, $V_1$, RF $S_{175}$ and JRH was studied under inoculated condition. It was revealed that total soluble sugar and protein content was significantly declined in all the varieties due to X. campestris infection. Total phenol content was at par prior to inoculation in all varieties, but it was significantly increased in $S_1$, RF $S_{175}$, $S_{1635}$ and JRH 7 days after inoculation. The correlation coefficient (r) between total soluble sugar and total phenol content was found positive (r = 0.825) and statistically significant. Similarly, correlation coefficient (r) between total soluble protein and phenol content was found positive (r = 0.897) and statistically significant. The present study indicates that X. campestris infected leaves are nutritionally inferior in quality and the duration of phenol production in a mulberry variety play decisive role on disease resistance.nce.

• 원예과학기술지
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• 제32권6호
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• pp.879-886
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• 2014

가축분뇨액비의 토양전염성 잔디병해들의 억제능력을 알아보고자 군위, 논산, 무안, 여주, 이천, 익산, 합천, 횡성 등 8개 지역의 가축분뇨액비생산시설에서 생산된 액비를 이용하여 기내에서 수행하였다. 가축분뇨액비와 병원균주들과의 대치배양을 통해 총 110종의 길항미생물을 선발하였으며, 각 병원균주별로 길항능력이 우수한 한 종씩을 선발하였다. 선발된 각각의 미생물은 16s rRNA 서열분석을 통해 brown patch에 길항력을 보인 ICIIIB60은 Alcaligenes sp., large patch에 길항력을 나타낸 GWIV70은 Bacillus licheniformis Ab2, dollar spot에 길항력을 보인 ISSH20은 B. subtilis C7-3으로 동정되었다. 이들의 최적배양조건은 NB 배지(ICIIIB60)와 TSB 배지(GWIV70, ISSH20)에서 온도는 $29.5^{\circ}C-31.4^{\circ}C$의 범위에서, pH는 6.5-7.3의 범위에서 잘 자라는 것으로 확인되었다. 또한 각 균주를 5종의 살균제와 혼용한 결과, ICIIIB60 균주는 테부코나졸 제제, GWIV70와 ISSH20 균주는 토클로포스메틸 제제에서 생존율이 높아 혼용처리가 가능할 것으로 판단되었다. 이러한 결과를 통해 가축분뇨액비는 비료로서의 역할뿐만이 아니라 잔디 병해를 줄일 수 있는 친환경적인 소재로 이용이 가능함을 확인하였다.

• 식물병연구
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• 제22권3호
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• pp.158-167
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• 2016

육묘장과 재배포장의 애호박에서 새롭게 발생한 병원균의 특성을 분석하여 동정하였다. 병징은 잎에 수침상의 병반과 강한 노란색의 둘레무리를 가진 점무늬, 꽃에서 갈색 병반, 열매에 노란색의 점무늬였다. 잎의 점무늬로부터 분리된 세균은 박과작물 8개의 식물체, 흑종호박, 애호박, 쥬키니호박, 풋호박, 참박, 참외, 멜론, 오이에 병원성이 있었지만 수박과 밤호박에서는 병을 일으키지 못했다. 분리세균은 다발모를 가진 막대형으로 그람음성이며 King's B 배지에서 형광성이었으며, LOPAT 1a 그룹에 속했다. 그들의 Biolog 기질이용성은 Biolog database의 P. syringae pv. syringae 이용성과 유사하였다. 16S rRNA 유전자 염기서열을 이용한 계통수와 4개의 항존유전자(gapA, gltA, gyrB, rpoD)의 염기서열과 PAMDB에 있는 P. syringae균주들의 염기서열을 이용한 MLST는 애호박 분리균주들이 P. syringae pv. syringae 균주들과 동일한 그룹(clade)으로 그룹화되었고, MLST 계통수에서 애호박 분리균주들의 그룹(clade)은 genomospecies 1에 속하였다. 표현형적, 유전적 특성은 애호박 분리균이 P. syringae pv. syringae임을 제시하였다.

• 한국어병학회지
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• 제6권2호
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• pp.219-231
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• 1993

The author introduces the preventive and therapeutic methods of diseases in Japanese flounder which have been conducted by the Fish Disease Laboratory, the Mikamewan Fishery Cooperative Union, Ehime Prefecture, since 1982. Prevention 1. Addition of a sand substrate in the culture pond was effective to prevent ulcer disease. 2. Bathing in 0.5ppm of copper ion was effective to prevent some parasites. 3. Low stocking density of the fish reduced an incidence of edwardsiellosis or gliding bacterial disease. 4. Removal of the diseased fish prevented thd spread of lyphoeystis. 5. So-called $\pi$-water was effective to prevent the fry from some diseases. 6. Immersion of the juvenile in a sodium nifrusylate solution during transportation was effective to prevent gliding bacterial disease. Therapy 1. Sodium nifrustylate or oxytetracycline was effective to cure gliding bacterial disease. 2. Bathing in formalin(150ppm) or freshwater was effective to cure scuticociliatidosis. 3. Erythromycin was effective to cure $\beta$-hemolytic Streptococcus sp. infection. 4. Bathing in a hydrogen peroxide solution(1.5%) was effective to cure white spot disease.

• The Plant Pathology Journal
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• 제22권4호
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• pp.314-317
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• 2006

A phage technique for detection of Xanthomonas axonopodis pv. citri, a causal bacterium of canker on Sastuma mandarin fruits was developed. Phage and ELISA techniques were compared for their sensitivity for detection of Xanthomonas axonopodis pv. citri on orange fruits. Both of techniques revealed a similar efficiency for the bacterial detection; the pathogenic bacteria were observed in pellet from the fruits with over one canker spot with below 2 mm in diameter. In field assays, the increase of phage population(120%) on surface of the fruits related to the disease development one month later indicated that the bacterial pathogens inhabit on the surface. The procedure will be effectively used for detection of only living bacterial pathogen on fruit surfaces of Satsuma mandarin and for the disease forecasting.