• Journal of Microbiology and Biotechnology
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• v.17 no.3
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• pp.403-407
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• 2007

Several marine. bacterial strains, which were isolated from seawater off the island Dokdo, Korea, were screened to find new bioactive compounds such as antibiotics. Among them, Donghaeana dokdonensis strain DSW-6 was found to produce antibacterial agents, and the agents were then purified and analyzed by LC-MS/MS and 1D- and 2D-NMR spectrometries. The bioactive compounds were successfully identified as cholic acid and glycine-conjugated glycocholic acid, the $7{\alpha}$-dehydroxylated derivatives (deoxycholic acid and glycodeoxycholic acid) of which were also detected in relatively small amounts. Other marine isolates, taxonomically different from DSW-6, were also able to produce the compounds in a quite different production ratio from DSW-6. As far as we are aware of, these bile acids are produced by specific members of the genus Streptomyces and Myroides, and thought to be general secondary metabolites produced by a variety of bacterial taxa that are widely distributed in the sea.

• The Korean Journal of Mycology
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• v.26 no.2 s.85
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• pp.211-229
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• 1998

To study the species diversity of the genus Boletellus in Korea, 56 specimens were collected from 1982 to 1996 at 20 locations including Odaesan. Collected specimens were observed and seven species among them were identified and described by observing macroscopic and microscopic characters, two of which were confirmed new to Korea: Boletellus chrysenteroides (Snell) Snell. Boletellus fallax Corner. Seven species were described here: Boletellus chrysenteroides (Snell) Snell, B. elatus Nagasawa, B. emodensis (Berk.) Singer, B. fallax Corner, B. obscurecoccineus $(V{\"{o}}hn)$ Singer, B. russellii (Frost) Gilbert, B. shichianus (Teng & Ling) Teng.

• Korean Journal of Ichthyology
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• v.19 no.1
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• pp.70-72
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• 2007

A single specimen of the family Agonidae was collected from the coastal waters of the East Sea, Korea. It was identified as Hypsagonus corniger Taranetz by having the first dorsal fin with seven spines, long supraoccipital spine, sharp spines of body plate, no process on the supralateral bony plates, the broader distance between the first and the second dorsal fins than base of the second dorsal fin, and longer second spine of the first dorsal fin than the first spine. A key to the genus Hypsagonus from Korea is provided. We propose a new Korean name, "Ga-si-jul-go-gi" for the species.

• Korean Journal of Ichthyology
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• v.22 no.4
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• pp.289-292
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• 2010

Xiphasia setifer is reported for the first time from the South Sea of Korea based on a single specimen (291.0 mm SL) collected in September 2010. This species is characterized by the origin of the dorsal fin located vertically above the anterior margin of the eye; dorsal fin rays XIV, 114; anal fin soft rays 114, and vertebrae 130. The new Korean name of the genus Xiphasia is proposed as "Galchi-be-do-ra-chi-sok" and the Korean name of X. setifer as "Gal-chi-be-do-ra-chi", following Yamada et al. (2009).

• Korean journal of applied entomology
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• v.11 no.2
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• pp.69-84
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• 1972

A study on plant parasitic nematodes from 125 110st plants at 33 districts in Kyung-Pook, Kyung-Nam and Jae-Ju province in Korea yielded 9 families, 28 genus, 42 different species, eight of which are described new for Korea. Some are noticed on the morphological characteristics: Criconemoides morgensis (Hofmanner & Menzel, 1914) Taylor. 1936. Crossonema (Crossonema) menzeli (Stefanski, 1924) Mehta & Raski, 1971. Macroposthonia ferniae (Luc, 1959) De Grisse & Loof, 1965. Macropesthenia ru.tita (MicoletEky, 1915) De Grisse & Loof, 1965. Neolobocriconema aberrane (Jairajpuri & Siddiqi, 1964) Mehta & Raski, 1971. Nothocriconema demani (Micoletzky, 1925) De Grisse & Loof, 1965. Rotylenchus pini Mamiya 1968. Xenocriconemella macrodora (Taylor, 1936) De Grisse & Loof, 1965.

• Korean journal of applied entomology
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• v.53 no.2
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• pp.97-101
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• 2014

In a faunal survey of the Gelechiidae (Lepidoptera: Gelechioidea) from Is. Ulleung-do in the East Sea of Republic of Korea, one species of Gelechiidae, Bagdadia gnomia Ponomaranko, is reported for the first time from Korea and an unknown species of the genus Bryotropa was discovered. In addition, eight species of Gelechiidae including a little known species, Dichomeris anisacuminata Li & Zheng, were first recorded from Is. Ulleung-do. Images of adults and genitalia for the newly recorded species and a little known species are provided.

• BMB Reports
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• v.39 no.5
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• pp.571-577
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• 2006

Dendrolimus punctatus tetravirus (DpTV) has been identified as a new member of the genus Omegatetravirus of the family Tetraviridae that may be related serologically to Nudaurelia capensis virus ($N{\omega}V$). To establish the function of DpTV RNA genome and to better understand the mechanism of viral replication, the putative RNA-dependent RNA polymerase (RdRp) domain has been cloned and expressed in Escherichia coli. The recombinant protein was purified on a Ni-chelating HisTrap affinity column and demonstrated to initiate viral RNA synthesis in a primer-independent manner but not by terminal nucleotidyle transferase activity in the presence of $Mg^{2+}$ and RNA template. Mutation of the GDD to GAA interferes with the residues at the polymerase active site and metal ions, and thus renders the polymerase inactive.

• ALGAE
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• v.31 no.4
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• pp.289-301
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• 2016

Floating debris provides substrates for dispersal of organisms by ocean currents, including algae that thrive on plastics. The 2011 earthquake and tsunami in Tohuku, Japan resulted in large amounts of debris carried by the North Pacific Current to North America from 2012 to 2016. In 2015-2016, the plastics in the debris bore a complex biota including pink algal crusts. One sample (JAW4874) was isolated into culture and a three-gene phylogeny (psbA, rbcL, and SSU) indicated it was an unknown member of the red algal class Stylonematophyceae. It is a small pulvinate crust of radiating, branched, uniseriate filaments with cells containing a single centrally suspended nucleus and a single purple to pink, multi-lobed, parietal plastid lacking a pyrenoid. Cells can be released as spores that attach and germinate to form straight filaments by transverse apical cell divisions, and subsequent longitudinal and oblique intercalary divisions produce masses of lateral branches. This alga is named Tsunamia transpacifica gen. nov. et sp. nov. Sequencing of additional samples of red algal crusts on plastics revealed another undescribed Stylonematophycean species, suggesting that these algae may be frequent on drift oceanic plastics.

• Korean Journal of Ichthyology
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• v.23 no.4
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• pp.310-313
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• 2011

This is the first report of Aprion virescens, belonging to the family Lutjanidae, collected in Korea. The specimen (151.4 mm in standard length) was caught by the gill net in the coastal waters of Jeju Island on 30 October, 2009. This species is characterized by having a deep vertical groove in front of eye, very short pectoral fin almost equal to snout length, and four black spots on dorsal fin. We propose a new Korean name, "Nok-saek-tung-dom-sok" and "Nok-saek-tung-dom" for the genus and species, respectively.

• Korean journal of applied entomology
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• v.51 no.2
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• pp.79-82
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• 2012

Pseudanostirus ecarinatus (Stepanov, 1930) is recognized for the first time in Korea. A redescription and illustrations of the species are presented based on a single male specimen collected from Mt. Bangtae Gangwon-do. We also provide diagnostic characteristics of the genus, which clearly separate it from other closely related genera, Calambus Thomson, 1859 and Anostrius Thomson, 1859.