• The Plant Pathology Journal
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• 제17권1호
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• pp.40-44
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• 2001

Disease occurrence and development of gray blight of tea (Camellia sinensis) were investigated. Higher incidences and more severe damage by gray blight were found in Japanese tea variety Yabukita than the Korean local variety. In Yabukita, Pestalotiopsis longiseta was more frequently observed on the diseased leaves than P. theae but vice versa in the Korean local variety. This indicates that there was the varietal difference in the distribution of fungal species of gray blight pathogens. Both varieties were most severely damaged during the third harvest period with weather conditions of high temperature and humidity favorable to the disease. Presence of the tea brown blight fungus Glomerella cingulata on the margin of gray blight lesion at the late stahe suggested that the pathogenic fungi of tea gray blight were replaced by the brown blight fungus during the disease development.

• The Plant Pathology Journal
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• 제15권5호
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• pp.308-310
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• 1999

A fungus associated with gray blight on tea plant (Camellia sinensis) was identifed as Pestalotiopsis theae based on the mycological characteristics. Mycelial growth on potato dextrose agar and size and shape of conidia of P. theae were similar to those of P. longiseta, but P. theae was different from P. longiseta in the color of three median cells and the number of apical appendages. Artificial inoculation of conidial suspension or mycelial mats on the wounded leaves and shoots of healthy plants induced the same disease, respectively. The Korean native variety was relatively. The Korean native variety was relatively more resistat to P. theae than a Japanese variety‘Yabukita’which has bee recently introduced and planted in large areas of southern parts of Korea. Here, we report the report the first record of gary blight caused by P. theae on tea plant in Korea.

• Journal of Plant Biology
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• 제27권2호
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• pp.51-60
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• 1984

Jisimdo is an island where evergreen broadleaved forests are well preserved. Soil environments and forest structures of Jisimdo were investigated, and an actual vegetation map and profile diagrams were drawn out. The natural vegetation of Jisimdo was divided into two stand units, one was evergreen broadleaved forest and the other was Pinus thunbergii forest. 26 species were identified as evergreen broadoeaved trees, and among them, Camellia japonica was the dominont of the tree layer of evergreen broadleaved forest. Profile diagram shows that Camellia japonica, with average height of 7∼8m, formed lower tree layer, and laurels like Cinnamomum japonicum, Machilus thunbergii, and Neolitsea sericea formed upper tree layer. In Pinus thunbergii forest, plants of shrub and herb layers were abundant because of much light penetrated into the forest floor, and these layers were largely composed of evergreen broadleaved trees. This fact shows the possibility of succession from Pinus thunbergii forest into evergreen broadleaved forest. Jisimdo is geographically adjacent to Jangseungpo and Okpo, and this increases the economic value of Jisimdo as a place of public resort. It will be necessary from being destroyed by land development and human interferences.

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2003년도 추계학술대회
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• pp.94-94
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• 2003

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2005년도 추계학술대회 및 한일 식물생명공학 심포지엄
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• pp.199-199
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• 2005

• 한국환경생태학회:학술대회논문집
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• 한국환경생태학회 1999년도 정기총회 및 학술논문 발표회
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• pp.98-101
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• 1999

• 한국영양학회:학술대회논문집
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• 한국영양학회 2003년도 연합학술대회
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• pp.282.1-282.1
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• 2003

• Mycobiology
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• 제46권2호
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• pp.85-91
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• 2018

Endophytic fungi strains (n = 81) were isolated from the leaves, barks, and fruits of Camellia oleifera from Hunan province (China) to delineate their species composition and potential as biological control agents of C. oleifera anthracnose. The fungi were identified by morphological and phylogenetic analyses. Fungal colonization rates of the leaves, barks, and fruits were 58.02, 27.16, and 14.81%, respectively. The isolates were identified as 14 genera, belonging to two subdivisions, Deuteromycotina and Ascomycotina; 87.65% of all isolates belonged to Deuteromycotina. The dominant species, occurring with a high relative frequency, were Pestalotiopsis sp. (14.81%), Penicillium sp. (14.81%), and Fusarium sp. (12.35%). The Simpson's and Shannon's diversity indices revealed the highest species diversity in the leaves, followed by the barks and fruits. The similarity index for the leaves versus barks comparison was the highest, indicating that the number of endophytic fungal species shared by the leaves and barks was higher than barks and fruits or leaves and fruits. Based on the results of dual culture experiments, only five strains exhibited antifungal activity against C. oleifera anthracnose pathogen, with isolate ty-64 (Oidium sp.) generating the broadest inhibition zones. Our results indicate that the endophytes associated with C. oleifera could be employed as natural agents controlling C. oleifera anthracnose.

• The Korean Journal of Ecology
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• 제4권3_4호
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• pp.80-92
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• 1981

1979년 7월부터 1981년 5월까지 4회에 걸쳐 생일도의 식생을 조사한 결과는 다음과 같다. 본도의 식물을 총 89과, 203속, 211종, 28변종, 3품종이었으며 상록활엽수는 동백나무, 구실잣밤나무를 비롯해서 총 24종이었다. 본도의 동북사면보다는 남서사면의 식생이 양호하였으며 그외의 지역은 식물상이 빈약하였고 유촌리에서 금머리사이의 지역은 칡과 누리장나무가 우점종이었다. 굴전리, 용출리, 금머리지역에 동백나무, 참식나무, 구실잣밤나무를 비롯한 상록활엽수가 우점종이었던 것이 인위적인 간섭(신탄용, 건축용, 방목등)에 의해 현재와 같은 곰솔을 우점종으로 하는 인위적인 천이가 일어난 것이다. 금머리 후사면의 동백나무군락과 굴전리와 항도 동사이의 구실잣밤나무군락은 보존할 가치가 있다고 생각하며 제주도와 돌산도에 분포하고 있는 호자나무(Damnacanthus indicus)가 본도에서도 발견된 것은 특기할만 하다.

• 한국자원식물학회지
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• 제21권1호
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• pp.41-46
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• 2008

차나무의 분자학적 유연관계 및 유전적 다양성을 알아보기 위하여 한국에서 자생하는 차나무 집단 21개 지역 차나무에 대하여 DFR 유전자 부위를 이용하여 PCR-RFLP분석을 하였다. DFR 4+5 primer 쌍을 이용하여 증폭결과 DFR유전자의 크기는 약 1.4kb에서 PCR산물을 획득하였다. PCR산물에 제한효소 Hpa II 및 Mse I를 이용하여 RFLP분석 결과 차나무 집단간 또는 집단내 차나무간의 유전적 다양성을 보였다. Hpa II 제한효소를 이용한 RFLP 밴드패턴은 3가지 형태로 구분되었으며, 같은 차나무 집단내에서도 유전적 다양성이 나타났다. Mse I 제한효소를 이용한 밴드패턴은 6가지의 형태로 다양성을 보였으며, 웅포집단 차나무의 경우 집단 내 다양성이 2가지 형태로 나타나 같은 집단내에서의 유전적 변이는 적은 것으로 보인다. 본 연구에서 사용한 2가지의 제한효소의 결과 차나무의 집단간 또는 같은 집단내의 차나무간에서 유전적 다양성을 확인할 수 있었다.