• Archives of Pharmacal Research
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• v.28 no.11
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• pp.1228-1232
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• 2005

Four compounds, including two novel macrolides, were isolated from an endophyte Streptomyces sp. Is9131 of Maytenus hookeri. Spectral data indicated that these compounds were dimeric dinactin (1), dimeric nonactin (2), cyclo-homononactic acid (3), and cyclo-nonactic acid (4). Bioassay results showed that dimeric dinactin had strong antineoplastic activity and antibacterial activity.

• Archives of Pharmacal Research
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• v.29 no.1
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• pp.59-63
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• 2006

Secalonic acid D(SAD) was isolated as the major secondary metabolite of the marine lichen-derived fungus Gliocladium sp. T31. Its structure was established on the basic of physicochemical and spectroscopic data. This is the first report on the isolation of SAD from this fungus, as well as its inhibitory effect on K562 cell cycle and its cytotoxicity against several tumor cell lines in vitro.

• Archives of Pharmacal Research
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• v.27 no.6
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• pp.604-609
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• 2004

A new indolinepeptide (3） was isolated, together with two known compounds, a cerebroside (1） and an alloxazine (2）, from silkworm larvae infected with Paecilomyces sp. J300. On the basis of spectroscopic data, their structures were elucidated as (4E, 8E, 25, 2＇R, 3R ）-N-2＇-hydroxy-hexadecanoyl-1-O-$\beta$-D-glucopyranosyl-9-methyl-4, 8-sphingadienine (1）, 7,8-dimethylalloxazine (2） and 3$\beta$,5-dihydroxy-1-N-methyl-indoline-2$\beta$-carbonyl amino-D-alanyl-erythro-$\beta$-hydoxyiso-leucinyl-glycine (3）.

• The Korean Journal of Zoology
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• v.35 no.1
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• pp.17-22
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• 1992

The three yolk polypeptides have been isolated and partially characterized. Their molecular weights of YPI, YP2, and YP3 were 48, 000, 47, 000, and 46, 000, respectivelv, as judged by SDS-polyacrvlamide gel electrophoresis. They have different digestion products upon in situ peptide mapping by limited proteolysis. Two-dimensional gel electrophoresis showed that their isoelectric points were heterogeneous from 5.92 to 6.54. And thew showed three different antigen-antibody reactions when each polvpeptides is reacted with antisera made to a mixture of all of three. These data reported here indicate that the yolk proteins are consisted of distinctive polypeptides in Drosophlla sp. (robusta species group).

• Mycobiology
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• v.48 no.4
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• pp.296-303
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• 2020

Three yeast strains (Hue-1, Hue-8, and Hue-19) with strong heavy metal tolerance were isolated from mangosteen from Hue city, Vietnam. They exhibited identical phenotype and phylogeny. Sequence analysis of the D1/D2 region of the LSU rRNA gene and the internal transcribed spacer (ITS) region demonstrated that the closest relative of these strains is Papiliotrema sp. with 2.12% and 3.55-3.7% divergence in the D1/D2 domain, and ITS domain, respectively. Based on the physiological, biochemical, and molecular data, the three strains belong to a novel species of Papiliotrema genus, for which the name Papiliotrema huenov sp. nov. is proposed. These strains are highly tolerant of heavy metals compared to other yeasts, being able to grow in the presence of 2 mM Pb (II), 2 mM Cd (II), and up to 5 mM Ni (II), but no growth was observed in the presence of 1 mM As (III).

• Journal of Microbiology and Biotechnology
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• v.17 no.5
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• pp.865-867
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• 2007

A chemical analysis of the fermentation of the marine-derived fungus Penicillium sp. led to the isolation of a biogenetic precursor of citrinin, redoxcitrinin(1), together with polyketide mycotoxins, phenol A(2), citrinin H2(3), 4-hydroxymellein(4), citrinin(5), and phenol A acid(6). The structures of compounds 1-6 were determined on the basis of physicochemical data analyses. Among them, compounds 1-3 exhibited a potent radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl(DPPH) with $IC_{50}$ values of 27.7, 23.4, and $27.2{\mu}M$, respectively.

• Mycobiology
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• v.47 no.3
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• pp.280-291
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• 2019

To explore species diversity of Hypocreaceae, collections from Guangdong, Hubei, and Tibet of China were examined and two new species and a new Chinese record were discovered. Morphological characteristics and DNA sequence analyses of the ITS, LSU, $EF-1{\alpha}$, and RPB2 regions support their placements in Hypocreaceae and the establishments of the new species. Hypomyces hubeiensis sp. nov. is characterized by occurrence on fruitbody of Agaricus sp., concentric rings formed on MEA medium, verticillium-like conidiophores, subulate phialides, rod-shaped to narrowly ellipsoidal conidia, and absence of chlamydospores. Trichoderma subiculoides sp. nov. is distinguished by effuse to confluent rudimentary stromata lacking of a well-developed flank and not changing color in KOH, subcylindrical asci containing eight ascospores that disarticulate into 16 dimorphic part-ascospores, verticillium-like conidiophores, subcylindrical phialides, and subellipsoidal to rod-shaped conidia. Morphological distinctions between the new species and their close relatives are discussed. Hypomyces orthosporus is found for the first time from China.

• Mycobiology
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• v.49 no.1
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• pp.46-53
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• 2021

In a study of the fungal diversity on Ulleung Island in Korea, three novel strains of Penicillium were isolated. Different sites on Ulleung Island were selected for collecting endophytic fungi, and three endophytic fungal strains showed unique morphological characteristics. DNA sequence of the internal transcribed spacer, β-tubulin, calmodulin, and RNA polymerase II second largest subunit regions of the strains were analyzed and they showed unique taxonomic position from the other species of Penicillium section Sclerotiora. The new strains were named Penicillium ulleungdoense sp. nov. As the novel endophytic Penicillium taxa were discovered in a unique environment, the data could be meaningful for understanding the geographical distribution of Ascomycetes on Ulleung Island.

• Molecules and Cells
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• v.27 no.5
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• pp.515-523
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• 2009

To infer the monophyletic origin and phylogenetic relationships of the order Desmoscolecida, a unique and puzzling group of mainly free-living marine nematodes, we newly determined nearly complete 18S rDNA sequences for six marine desmoscolecid nematodes belonging to four genera (Desmoscolex, Greeffiella, Tricoma and Paratricoma). Based on the present data and those of 72 nematode species previously reported, the first molecular phylogenetic analysis focusing on Desmoscolecida was done by using neighbor joining (NJ), maximum parsimony (MP), maximum likelihood (ML) and Bayesian inference (BI) methods. All four resultant trees consistently and strongly supported that the family Desmoscolecidae forms a monophyletic group with very high node confidence values. The monophyletic clade of desmocolecid nematodes was placed as a sister group of the clade including some members of Monhysterida and Araeolaimida, Cyartonema elegans (Cyartonematidae) and Terschellingia Iongicaudata (Linhomoeidae) in all the analyses. However, the present phylogenetic trees do not show any direct attraction between the families Desmoscolecidae and Cyartonematidae. Within the monophyletic clade of the family Desmoscolecidae in all of the present phylogenetic trees, there were consistently observed two distinct subgroups which correspond to the subfamilies Desmoscolecinae [Greeffiella sp. + Desmoscolex sp.] and Tricominae [Paratricoma sp. + Tricoma sp].

• Journal of Distribution Research
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• v.11 no.1
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• pp.21-40
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• 2006

The purpose of this paper is to investigate how evaluation of sales promotion is affected by consumer's perception on sale promotion tools(SP). Perception on SP is supposed to be classified into reduced loss and separate gain according to characteristics of SP, that are benefit realization period(immediate vs. remote), easy to calculate cash value(easy vs. difficult), and purchase occasion(concurrent vs. different). Hypothesis testing using ANOVA and structural equation model about data that is collected from college students based on experimental design, reveals that immediate realization and easy calculation make SP tool perceived as reduced loss. And perception as reduced loss is more effective to be evaluated as high value and lead to purchase intention.