A5100782294- Microbial Community Ecology and Physiology
- Protist diversity and phylogeny
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Marine Toxins and Detection Methods
- Marine Biology and Ecology Research
- Peroxisome Proliferator-Activated Receptors
- Aquatic Ecosystems and Phytoplankton Dynamics
- Genomics and Phylogenetic Studies
- Cholinesterase and Neurodegenerative Diseases
- Biochemical Analysis and Sensing Techniques
- RNA regulation and disease
- Metabolism and Genetic Disorders
- Asymmetric Synthesis and Catalysis
- melanin and skin pigmentation
- Chemical Synthesis and Analysis
- Spectroscopy Techniques in Biomedical and Chemical Research
- Medicinal Plants and Neuroprotection
- Identification and Quantification in Food
- Meat and Animal Product Quality
- Analytical chemistry methods development
- Marine and coastal plant biology
- Environmental DNA in Biodiversity Studies
- Turfgrass Adaptation and Management
- Agriculture, Soil, Plant Science
Chonnam National University Hwasun Hospital
2021
Seoul National University
2015-2021
Gangneung–Wonju National University
2017-2019
University of Ulsan
2014-2018
National Institute of Animal Science
2017
Kyungpook National University
2015
Pukyong National University
2014
Gyeongsang National University
2007-2011
Korea Forest Service
2011
Red tides – discolorations of the sea surface due to dense plankton blooms occur regularly in coastal and offshore waters along much world's coastline. often cause large-scale mortalities fish shellfish significant losses aquaculture tourist industries many countries. Therefore, understanding predicting mechanisms controlling outbreak, persistence, spread, decline red are important concerns scientists, officials, industry, public. With increasing knowledge red-tide species events, new have...
Microalgae fuel food webs and biogeochemical cycles of key elements in the ocean. What determines microalgal dominance ocean is a long-standing question. Red tide distribution data (spanning 1990 to 2019) show that mixotrophic dinoflagellates, capable photosynthesis predation together, were responsible for ~40% species forming red tides globally. Counterintuitively, with low or moderate growth rates but diverse prey including diatoms caused The ability these dinoflagellates trade off...
The ichthyotoxic Cochlodinium polykrikoides red tides have caused great economic losses in the aquaculture industry waters of Korea and other countries. Predicting outbreak C. 1–2 weeks advance is a critical step minimizing losses. In South Sea Korea, large tide patches often been recorded offshore transported to nearshore waters. To explore processes tides, temporal variations 3-dimensional (3-D) distributions organisms environmental parameters were investigated by analyzing 4,432 water...
Vascular calcification (VC), or calcium deposition inside the blood vessels, is common in patients with atherosclerosis, cardiovascular disease, and chronic kidney disease. Although several treatments are available to reduce calcification, incidence of VC continues rise. Recently, there have been reports describing regulation circular RNAs (circRNAs) various diseases. However, role circRNAs has not yet fully explored. Here, we investigated function circSmoc1-2, one generated from Smoc1 gene,...
Protargol (silver proteinate) impregnation is a common method used to identify and characterize ciliated protozoa. Unfortunately, chemical companies have stopped producing the 'strong' protargol powder in this method. Based on an in-house protocol for its synthesis published 2013, more than 10 batches of were produced subsequently applied taxonomic studies. During these studies, was slightly modified employed peptone not originally listed 2013 protocol. This modification improved results...
Abstract The morphology and morphogenesis of a new ciliate species, Neobakuella aenigmatica n. sp., which was discovered in an estuary Korea, were investigated, using live observation, protargol impregnation, scanning electron microscopy. This species is characterized by large (185–300 × 55–105 μm vivo), elongate‐ellipsoidal, flexible but not contractile body. It has ellipsoidal, yellowish cortical granules, 1.3 1.0 size. invariably 3 frontal 2 frontoterminal cirri, about 5–10 buccal 1–6...
A new hypotrichous ciliate, Apoterritricha lutea n. g., sp., was discovered in a sample of terrestrial liverwort from Korea. Its morphology studied using detailed vivo observation and protargol impregnation. phylogenetic relationships were revealed by analyses the 18S rRNA gene. This taxon is characterized combination following traits: (i) ellipsoidal to narrowly body with an average size 230 × 85 μm; (ii) two macronuclear nodules five micronuclei; (iii) golden yellow cortical granules,...
Abstract Three peritrichous ciliates, Zoothamnium arcuatum n. sp., Z. grossi and parahentscheli Sun et al., 2009, were collected from an estuary of the Taehwagang River, Korea. All these species investigated based on live observations silver staining, their small subunit ( SSU ) rRNA gene was also sequenced. can be identified by a goblet‐shaped colony, double‐layered peristomial lip, abstomally shortened row 3 infundibular polykinety (P3). is morphologically characterized alternately...
미숙성 복분자 5% 주정 추출물의 지질대사 개선 효과를 구명하고자 본 연구에서는 고콜레스테롤혈증 모델에게 추출물 50, 100, 300 mg/kg/day의 농도(uRC 50군, uRC 100군, 300군)로 60일간 경구 투여하였다. 체중증가량은 HC군과 N군 간의 차이가 없었으며 투여에 의해서도 유의차는 없었다. 식이섭취량은 HC군에 비하여 BO군에서 유의적으로 감소되었다. 식이효율은 각 군 간에 간 조직의 무게는 HC군이 N군에 유의하게 증가하였다. 300군, BO군에서는 감소하는 경향을 보였고 그중 100군에서 신장의 거의 유사하여 의한 변화는 비장의 HC군은 증가하였으며 300군에서는 감소한 보였으며 BO 투여군에서는 유의한 감소를 나타내었다. 총 콜레스테롤 함량은 비해 HC군에서 증가하였고, 이러한 고콜레스테롤혈증을 유발시킨 C57BL/6 mice에 콜레스테롤이 감소하였다. HDL-cholesterol은 BO군으로 증가한 LDLcholesterol은 NC군에 증가를...
The morphology and molecular phylogeny of Parabistichella multilineae sp. nov., which was discovered in soil from Gagye Beach, South Korea, were investigated. new species is characterized as follows: body size about 200 × 47 µm vivo, slenderly lanceolate twisted; two ellipsoidal macronuclei usually globular micronuclei; types cortical granules; four or five frontoventral rows, rows 1 2 are conspicuously developed 3 4 fully extended; caudal cirri lacking. Phylogenetic analyses based on the...
Two colepid ciliates, Levicoleps taehwae nov. spec. and L. biwae jejuensis subspec., were collected from the brackish water of Taehwa River a small freshwater pond in Jeju Island, South Korea, respectively. Their living morphology, infraciliature, subunit (SSU) rRNA gene sequences determined using standard methods. Barrel-shaped is ciliate with an average size 45 × 25 μm vivo, about 15 ciliary rows each composed 12 monokinetids two perioral dikinetids, 20 μm-long caudal cilia. The sequence...
The planktonic phototrophic dinoflagellate Gonyaulax whaseongensis sp. nov., isolated from coastal waters of western Korea, was described living and fixed cells under light scanning electron microscopy, its rDNA sequenced. had a plate formula 2pr, 4′, 6′′, 6c, 6′′′, 1p, 1′′′′ with S‐type ventral organization like the other species in genus. However, this narrow cingulum (ca. 2.6 μm), small displacement cingulum, slight overhang steep angle between ends quadrangular sixth precingular plate,...
Two heterotrichid ciliates, Climacostomum virens (Ehrenberg, 1838) Stein, 1859 from brackish water and freshwater, Fabrea salina Henneguy, 1890 a solar saltern, were collected in Korea. They are novelly investigated Korea by means of live observation, protargol staining nuclear small subunit (SSU) rRNA gene sequencing. is characterized pouch-like body shape, length <TEX>$200-370{\mu}m$</TEX> vivo, conspicuous cytopharyngeal tube, macronuclei ribbon-like one to four number, with or without...
본 연구는 우리나라에 난지형 목초의 도입 가능성을 검토하고 재배 한계지를 구명하기 위하여 전남 장흥, 광주광역시, 전북 김제 및 충남 천안에서 2009년 5월부터 2012년 12월까지 수행하였다. 화본과 목초인 버뮤다그라스 "Common", "자생형(Ecotype)" 품종, 바히아그라스 "Argentine", "Tifton 9" 품종과 클라인그라스 "Selection 75" 품종을 5월 하순에 파종하였다. 버뮤다그라스의 출현 소요일은 파종 후 12일정도 소요되었으며 바히아그라스는 24~28일 정도 소요되는 것으로 나타났다. 월동이 가능한 광주지역에서 출수기는 28일경, 바이하그라스는 7월 26일경, 클라인그라스는 30일경에 출수기에 도달하였다. 월동성은 장흥 광주지역에서는 바히아그라스를 제외하고는 모두 가능하였으며 김제와 천안지역은 불가능한 건물생산성은 모든 시험지역에서 클라인그라스가 6,106 ~ 15,331 kg/ha으로 가장 높게 나타났으며 바히아그라스가 낮은 단백질...
Two Spirostomum species were collected from freshwater in Jindo Island, Korea and identified as ambiguum (Muller, 1786) Ehrenberg, 1835 minus Roux, 1901. This study is the first known morphological record of these two being found Korea. The description based on observation living specimens protargol impregnated specimens. Diagnostics ambiguum: body size <TEX>$340-930{\times}45-80{\mu}m$</TEX> vivo; long slender with truncated posterior part; macronucleus moniliform 7-22 nodules; cortical...