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충남 오서산에 분포하는 소나무와 일본잎갈나무에서 분리한 내생균의 다양성
어주경 ( Ju Kyeong Eo ),김창균 ( Chang Kyun Kim ),이향범 ( Hyang Burm Lee ),엄안흠 ( Ahn Heum Eom ) 한국균학회 2013 韓國菌學會誌 Vol.41 No.3
Diversity of endophytic fungi of two species associated with host plants, Pinus densiflora and Larix Kaempferi in Mt. Oser were investigated. Endophytic fungi were isolated from surface sterilized leaves of the 13 host plants and identified by morphological traits and rDNA ITS sequences analysis. Totally 37 isolates were discovered and identified into 17 taxa. Of them, 59% isolates belonged to Leotiomycetes, 30% isolates Sordariomyetes, 8% isolates Dothideomycetes and 3% isolates Agaricomycetes. Results showed a similar diversity pattern with previous studies. Also, species diversity (H``) of endophytic fungi isolated from L. kaempferi was higher than that from P. densiflora. The endophytic species composition showed significant differences between host plants. Particularly, taxon of Lophodermium is a major genus in the host plants. However, critical research of the endophytic species diversities within the genus in Korea is required. The communities of endophytic fungi isolated in this study showed differences in diversities and species composition between host plants.
단보 : 강원도 함백산에 서식하는 목본식물의 잎에서 분리한 4종 의 내생균
어주경 ( Ju Kyeong Eo ),이봉형 ( Bong Hyung Lee ),엄안흠 ( Ahn Heum Eom ) 한국균학회 2014 韓國菌學會誌 Vol.42 No.3
In this study, endophytic fungi were isolated from leaves of four species of woody plants, Acer tagmentosum, Larix kaempferi, Abies holophylla, and Pinus koraiensis, on Mt. Hambaek, Gangwondo, Korea. The endophytic fungi were identified using morphological and sequences analysis of ITS regions. The fungal endophytes were identified as Talaromyces radicus, Myceliophthora verrucosa, Cryptosporiopsis diversispora, and Sphaerulina berberidis, which are the first record in Korea. The morphological and molecular phylogenetic characteristics of each strain were described.
눈측백(Thuja koraiensis Nakai)에서 분리한 내생균의 다양성
어주경 ( Ju-kyeong Eo ),이봉형 ( Bong-hyung Lee ),엄안흠 ( Ahn-heum Eom ) 한국균학회 2016 韓國菌學會誌 Vol.44 No.2
화악산, 설악산, 함백산에 서식하는 눈측백의 잎에서 내생균을 분리하여 다양성을 조사하였다. 숙주식물로부터 총202개의 균주를 분리하였고, 이 균주들의 ITS rDNA 염기서열을 분석한 결과 32개의 분류군으로 동정되었으며, Diaporthenobilis, Mycosphaerella handelii, Pestalotiopsis cocculi3종이 국내 미기록종으로 확인되었다. 분리된 균주 중61.5%는 Dothideomycetes였으며, 27.0%는 Sordariomyetes,11.5%는 Leotiomycetes에 속하였다. 눈측백에 서식하는 내생균에서 우점종은 Dothideomycetes에 속하는 Phyllostictaspinarum인 것으로 조사되었으며 이 종에 대한 후속연구가 필요한 것으로 생각된다. The biodiversity of endophytic fungi on Thuja koraiensis in Mt. Hwaak, Seorak, and Hambaek, Korea was investigated. For the 202 isolates collected from the host trees, internal transcribed spacer rDNA region sequences-based analysis identified 32 taxa; 61.5% of the isolates belonged to Dothideomycetes, 27.0% belonged to Sordariomycetes, and 11.5% belonged to Leotiomycetes. This composition rate is somewhat different from that reported in previous studies for endophytic fungi inhabiting trees of the family Pinaceae. In particular, Phyllosticta spinarum in Dothideomycetes is a dominant species among the diverse endophytes of T. koraiensis. Therefore, further critical research is required for this species.
단보 : 침엽수의 잎에서 분리한 국내 미기록 내생균 3종에 대한 보고
어주경 ( Ju Kyeong Eo ),이봉형 ( Bong Hyung Lee ),엄안흠 ( Ahn Heum Eom ) 한국균학회 2015 韓國菌學會誌 Vol.43 No.4
경기도와 강원도에 위치한 화악산, 명지산 그리고 설악산에서 침엽수를 채집하여 균 분리를 수행하였다. 특히, 눈측백과 분비나무의 내생균에 대한 연구가 최초로 수행되었으며, 본 연구를 통해 이들로부터 분리한 균에 대한 형태적, 유전적 동정을 수행하였다. 그 결과 Cryptosporiopsis actinidiae, Pestalotiopsis mangiferae, Pyrenochaeta cava가 확인되었으며, 이에 대해 최초로 국내에서 눈측백과 분비나무에 분포함을 보고하였다. We examined endophytic fungi from the needle leaves of three species of conifers in Korea: Abies nephrolepis, Thuja koraiensis, Pinus koraiensis. Endophytic fungi were isolated from the surface-sterilized leaves and identified based on morphological characteristics and Internal transcribed spacer sequences of rDNA. Three species of endophytic fungi isolated in this study were the first reported in Korea: Cryptosporiopsis actinidiae, Pestalotiopsis mangiferae, Pyrenochaeta cava.
어주경 ( Ju-kyeong Eo ),박혁 ( Hyeok Park ),최승세 ( Seung-se Choi ),신현철 ( Hyun-chul Shin ),송세규 ( Se-kyu Song ),엄안흠 ( Ahn-heum Eom ) 한국균학회 2017 韓國菌學會誌 Vol.45 No.4
본 연구에서는 독도의 근권에 분포하는 수지상균근균을 분리·배양하였다. 형태적 특징과 18s rDNA 염기서열에 의거하여 총 7속 8종의 수지상균근균을 동정하였다; Acaulospora longula, Acaulospora mellea, Claroideoglomus claroideum, Diversispora aurantia, Funneliformis mosseae, Gigaspora margarita, Paraglomus occultum, Septoglomus constrictum. 동도와 서도의 종 다양성에는 차이가 없었으며, 한반도에서 발견한 것과 동일한 분류군들을 확인하였다. 본 연구는 독도의 수지상균근균 다양성 연구와 추후 수지상균근균의 기능 규명에 도움을 줄 것으로 판단된다. In this study, arbuscular mycorrhizal fungi (AMF) were isolated from rhizosphere soils of Dokdo Island. Based on their morphological characteristics and 18S rDNA sequence analysis, eight species belonging to seven genera were identified: Acaulospora longula, A. mellea, Claroideoglomus claroideum, Diversispora aurantia, Funneliformis mosseae, Gigaspora margarita, Paraglomus occultum, and Septoglomus constrictum. No differences were noted between the AMF isolated from Dongdo and Seodo in Dokdo Island, and all of these AMF have been reported previously in Korea. These results could be useful for diversity and functional analyses of AMF in Korea.
고랭이류에서 분리한 내생균의 생물다양성 및 지리적 양상
어주경 ( Ju-kyeong Eo ),박은수 ( Eunsu Park ) 한국균학회 2019 韓國菌學會誌 Vol.47 No.1
We investigated the biodiversity of endophytic fungi of Bolboschoenus planiculmis and Schoenoplectus triqueter in Korea. Twenty five of these host plants were collected from six sampling sites. Internal transcribed spacer analysis identified a total of eighty five isolates from the collected plants. The isolates comprised nineteen taxa; most of the isolates (92%) belonged to class Dothideomycetes, followed by Sordariomyetes (4.8%), Agaricomycetes (1.6%), and Eurotiomycetes (0.8%). The most prevalent fungus was Cladosporium perangustum in B. planiculmis and Macrospora scirpicola in S. triqueter. There are very few studies of endophytic fungi in halophytes and these have reported biodiversity patterns different from those of previous studies in Korea. Our results should provide useful information for future research in Korea.
단보 : 침엽수의 잎에서 분리한 5종의 국내 미기록 내생균
이봉형 ( Bong Hyung Lee ),어주경 ( Ju Kyeong Eo ),엄안흠 ( Ahn Heum Eom ) 한국균학회 2016 韓國菌學會誌 Vol.44 No.1
본 연구에서는 강원도의 설악산에서 주목(Taxus cuspidate Siebold & Zucc.)과 잣나무(Pinus koraiensis Siebold & Zucc.), 경기도 화악산에서 분비나무(Abies nephrolepis (Traut.) Maxim.), 경북 울릉도에서 주목 등의 침엽을 채취하여 내생균을 분리하였고, 분리된 균주의 형태학적 특징을 관찰하고, ITS rDNA와 LSU rDNA지역의 염기서열 분석하여 균을 동정하였다. 그 결과 Biscogniauxia maritime, Nemania diffusa, Pezicula carpinea, Phomopsis juglandina, Sydowia polyspora 등의 5종의 국내 미기록 내생균을 확인 하였고, 이를 보고하고자 한다. Diverse endophytic fungi were isolated from surface-sterilized leaves of three species of conifers inhabiting various sites in Korea: Abies nephrolepis, Pinus koraiensis and Taxus cuspidate. The isolates were identified based on morphological characteristics and sequences analysis of both internal transcribed spacer and large subunit regions of rDNA. In this paper, we report on five previously unreported species of endophytic fungi isolated from conifers: Biscogniauxia maritime, Nemania diffusa, Pezicula carpinea, Phomopsis juglandina and Sydowia polyspora.
수지상균근균이 인삼 (Panax ginseng C. A. Mey.)의 생장에 미치는 영향
길이종 ( Yi Jong Kil ),어주경 ( Ju Kyeong Eo ),엄안흠 ( Ahn Heum Eom ) 한국균학회 2013 韓國菌學會誌 Vol.41 No.2
The purpose of this study was to investigate effects of inoculation of arbuscular mycorrhizal fungi (AMF) on growth of Korean ginseng (Panax ginseng C. A. Mey.) seedlings. Five species of AMF (Glomus mosseae, Glomus intraradices, Glomus etunicatum, Acaulospora longula, Acaulospora trappei) were inoculated to ginseng seedlings at 60 days after ginseng seed germination. Dry weights, heights of the plants and chlorophyll fluorescence were measured at 120 days after inoculation of AMF. Dry weights and shoot heights were increased in seedlings inoculated with AMF compared to the controls without AMF. However, chlorophyll fluorescence of seedlings with AMF showed no significant difference compared to the control.