• 한국농림기상학회지
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• 제18권2호
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• pp.65-73
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• 2016

RCP4.5와 RCP8.5 미래 기후 변화 시나리오자료와 참다래 궤양병 피해 예측 모형인 D-PSA-K, 미래 참다래 재배적지 지도를 활용하여 궤양병의 미래 피해를 예측하고 참다래 궤양병의 발생 변화의 경향성을 찾아 보았다. 병원 세균에 의한 감염이 충분히 있다는 가정 아래에서 RCP4.5와 RCP8.5 시나리오의 2020년대와 2050년대에서 궤양병의 최대이병주율은 제주도와 남해안 일부 지역을 제외한 대부분의 지역에서 75% 이상으로 나타날 것으로 예측되었다. 두 시나리오들 모두에서 월동기 저온 환경이 없다는 가정 아래에서의 참다래 궤양병에 의한 가지 피해량은 거의 모든 재배가능지에서 증가될 것으로 예측된 반면에 월동기 저온에 의한 가지 피해량 증가율은 거의 모든 재배가능지에서 감소할 것으로 예측되었다. 지역 및 시나리오별로 궤양병 피해의 증가 및 감소의 경향은 다르게 나타날 것으로 예측되었다. RCP4.5 시나리오에서 2050년대에 2020년대에 비하여 10% 이상 최대 이병주율의 증가가 일어날 것으로 예측된 참다래 재배 가능지는 전체 재배 가능지의 3.14%, RCP8.5 시나리오에서는 25.41%였다.

• 대한치과의사협회지
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• 제16권7호통권110호
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• pp.487-487
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• 1978

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.121.1-121
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• 2003

Dispersal of Xanthomonas axonopodis pv. citri, causing citrus bacterial canker disease on Unshiu orange was investigated at previously infested plots at Seogwipo in Jeju island of Korea. The bacterial pathogen overwintered in lesions started to multiply at tate May, and disease firstly observed one month after detection of phage from lesions. The disease gradually increased, however, it dispersed non-directionally to nearby plants from inoculum sources. Diseased plants were aggregated to form a cluster throughout the experiment. Population dynamics of phage on symtomless leaf surface and the disease severity were compared in the nursery, Increase of phage population on symptomless leaf surface preceded one month to that of the disease severity Population of phage increased constantly from late July to October, however, the disease severity decreased from late August to late October. It was assumed that the decrease of disease severity might be due to disease-induced defoliation.

• 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.

• The Plant Pathology Journal
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• 제16권5호
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• pp.247-251
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• 2000

Latent infections of healthy-appearing oaks of Hypoxylon atropunctatum complicates field studies by interfering with inoculation experiments to follow pathogenesis, fungal development and reproduction of this canker rot fungus. Mutants with unique and easily scorable phenotypes would be useful for inoculation studies. There is a broad range in the capacity of wild-type isolates to utilize nitrate as a sole nitrogen sources. Several types of nitrate-nonutilization mutants (nit1, Nit3, NitM) were selected from nitrate-utilizing wild-type isolates. Also, a few mutants of Hypoxylon atropunctatum were selected that could only grow poorly on basal medium supplemented with various nitrogen sources and even on yeast extract agar. These unknown mutants need to be characterized further. Nit mutants of Hypoxylon atropunctatum were readily selected, grew well and were recovered after inoculation into oak stems. These results suggest that nit mutants could be useful for inoculation studies in trees that contain latent infections.

• 한국식물병리학회지
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• 제12권3호
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• pp.324-330
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• 1996

암수 딴그루인 참다래 품종 중에서 우리나라에서 재배되고 있는 대표적인 결실수(암나무)인 Hayward와 수분수(숫나무)인 Matua에서 궤양병의 발생 차이를 조사한 결과 Hayward의 이병엽율은 18.0%인 반면에 Matua의 이병엽율은 2.4%였다. 또한 Hayward와 Matua의 잎에 형성된 병반에서 분리된 궤양병균의 균총수는 생체중 1 g당 각각 1.8$\times$10\ulcorner개와 2.1$\times$10\ulcorner개로 Hayward에서 Matua보다 약 10배 가량 많은 궤양병균이 검출되었다. Hayward 신초에 존재하는 궤양병균의 밀도를 조사한 결과 줄기 조직보다는 잎 조직에서 많은 궤양병균이 검출되었으며 새로 나온 잎일수록 궤양병균의 밀도는 낮게 검출되었다. 궤양병 방제를 위하여 스트렙토마이신 수간주입에 의한 궤양병 치료효과는 50.7~53.7%였다. 수간주입시 약량을 주당 2 L에서 3 L와 4 L로 증가시킴에 따라 치료효과도 32.3%에서 58.1%와 71.0%로 각각 증대되었는데, 수간주입 약제와 수간주입 방법의 개선을 통하여 궤양병 치료효과를 더욱 증대시킬 수 있을 것으로 기대된다.

• 한국유기농업학회지
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• 제6권1호
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• pp.35-43
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• 1997

For the purpose of acquiring microbial agents that can be utilized to billogically control the major airborne disease to apple trees, such as canker(Valsa ceratosperma), the effective microorgaisms were isolated, tested for antagonistic activity to the pathogen causing major disease to apple trees and identifed. Screening of more than 3, 000 species of microorganisms collected in nature for them antagonistic action to the pathogen, Valsa ceratosperma causing disease to apple tree resulted in selection of effective species. Out of the 11 species, one species designated as CAP141 demonstrated outstanding activity. The bacterial strain, CAP141 exerted antagonistic efficiency of 65% on Valsa ceratosperma. The CAP141 was identified as a bacterial strain to Bacillus subtilis based on morphology, culture conditions, and physio-biochemical characteristics.

• Journal of Plant Biology
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• 제4권1호
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• pp.21-24
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• 1961

The strains of fungus which belong to Coniothyrium genus were isolated from leaf spoot of Yucca. The isolated strain can grow easily and forms characteristic colonies on Saido's soy agar. There are definite differences, according to other authors, (By Miyake et Hara 1911) Pycnidio-spore are usually formed ellipsoidal, dark brown, 4$\times$2. 5-4. $O\mu$ in size, whereas isolated strains are globose, yellowish brown, 2.8-4.2$\mu$ in diameter. The positive inoculation test can be attained by burned petridish method, preserving it in incubator at 28$^{\circ}C$, and the pycnidio-spore can be reisolated from the inoculated portion. (Photo.7) Up to the present day there is no report for leaf spot of Yucca caused by Coniothyrium sp.. Comparing the writer's isolate with those fungi described(leaf spot of alloe, rose canker and elm canker etc.) hitherto, there are no accordance in the symptom and especially in morphological charactgers and Pathogenicitys.

• Journal of Forest and Environmental Science
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• 제38권2호
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• pp.137-139
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• 2022

In 2021, severely infected trees showing distinct symptoms including branch dieback, necrotic lesions on branches, cankers on the shoots, and dark brown discoloration on the stem on Hovenia dulcis were found in the provincial forest of Jeollabuk-do located in Jangsu, South Korea. The causal agent of the pathogen was identified as Botryosphaeria dothidea based on morphology and sequence comparisons. This is the first confirmed report of B. dothidea causing branch dieback and canker on H. dulcis.

• 한국식물병리학회지
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• 제2권3호
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• pp.174-184
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• 1986

춘성 가평 인제 강화 밤나무재배단지에서 채집한 가지나 줄기마름병상에서 11개월균이 분리, 동정되었다. 그중에서 완전세대는 우리나라에서 보고된 Botryosphaeria dothidea(Moug. ex Fries) Ces et de Notaris와 Endothia parasitica(Murrill) P. J. et H. W. Anderson외 Cryptodiaporthe castanea(Tulasne) Wehmeyer, Endothia singularis Shear et Stevens와 Pseudovaseela modonia(Tulasne) Kobayashi등 5개균이며 불완전세대는 Dothiorella castaneae Camera et Vasconcelos, Fusicoccum castaneum Saccardo, Catinula japonica st. nov. Endothiella singularis(H. et. P. Syd.) Shear et St ev. nom seminud, E. parasitico And., nom. seminud와 Coryneum castaneae(Sacc) comb. nov의 6개균이다. Botryosphaeria dothidea는 밤나무줄기썩음병(동부병) Endothia parasitica는 줄기마름병(동고병)을 일으키는 병으로 명명되었으나 이외의 균은 우리나라에서는 밤나무에서 처음으로 분리, 동정되었다.