• Title/Summary/Keyword: taxonomic studies

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Taxonomic Studies on the Genus Marssonina in Korea

  • Lee, Hyun-Tae;Shin, Hyeon-Dong
    • Mycobiology
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    • v.28 no.1
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    • pp.39-46
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    • 2000
  • Eight species of Marssonina parasitic on 21 species of host plants from Korea are described and illustrated. They are Marssonina brunnea (Ellis & Everh.) Magnus, M. capsulicola (Rostr.) Magnus, M. celastri H.D. Shin & H.T. Lee, M. coronaria (Ellis & Davis) Davis, M. fragariae (Lib.) Kleb., M. juglandis (Lib.) Magnus, M. rosae (Lib.) Died. and M. sennenis (Gonz. Frag.) Vassiljevsky & Karak. Of these, M. capsulicola and M. coronaria sometimes poss three-celled conidia and M. sennenis is characterized by a short appendage at the basal end of the conidia. Morphological features of conidia and host ranges were of taxonomic values for species delimitation.

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Two New Records of Scleroderma Species (Sclerodermataceae, Boletales) in South Korea

  • Sung-Eun Cho;Young-Nam Kwag;Sang-Kuk Han;Dong-Hyeon Lee;Chang Sun Kim
    • The Korean Journal of Mycology
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    • v.50 no.2
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    • pp.115-123
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    • 2022
  • Two new records of Scleroderma species from South Korea are described here. Comprehensive taxonomic studies of Scleroderma specimens were conducted at the Korea National Arboretum. Based on morphological and molecular data (fungal barcode sequences), two new records (S. laeve and S. nastii) were confirmed. Herein, morphological descriptions, including Scanning Electron Microscope (SEM) images of basidiospore ornamentation, and a taxonomic key of Korean Scleroderma species are provided.

Taxonomic Studies on Cercospora and Allied Genera in Korea (VI) (한국산 Cercospora 및 관련 속의 분류학적 연구 (VI))

  • Kim, Jeong-Dong;Shin, Hyeon-Dong
    • The Korean Journal of Mycology
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    • v.27 no.1 s.88
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    • pp.54-62
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    • 1999
  • This paper is the sixth contribution towards taxonomic studies on Cercospora and allied genera, and contains ten species of Korean cercosporoid fungi; viz., Cercospora apii, C. aristolochiae-contortae, C. violae, Neoramularia bidentis, Phaeoramularia weigelicola, Pseudocercospora cantuariensis, P. cydoniae, P. profusa, Pseudocercosporella sublineolata, and Ramularia plantaginis. Morphological characteristics of taxonomic value are described and illustrated for these species to contribute towards a mycological monograph of Korean cercosporoid fungi.

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Taxonomic Studies on Cercospora and Allied Genera in Korea (IV) (한국산 Cercospora 및 관련 속의 분류학적 연구 (IV))

  • Kim, Jeong-Dong;Shin, Hyeon-Dong
    • The Korean Journal of Mycology
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    • v.26 no.4 s.87
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    • pp.437-449
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    • 1998
  • This paper is a fourth contribution towards taxonomic studies on Cercospora and allied genera, and contains ten species of Korean cercosporoid fungi; viz. Cercospora capsici, C. cardaminae, C. nasturtii, Phacellium episphaerium, Pseudocercospora chengtuensis, P. diospyrimorrisianae, Pseudocercosporella capsellae, Ramularia armoraciae, R. lamii var. lamii, and R. pratensis var. pratensis. Morphological characteristics of taxonomic value are described and drawn for these species to contribute towards a mycological monograph of Korean cercosporoid fungi.

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Notes on the Lichen Genus Hypotrachyna (Parmeliaceae) from South Korea

  • Jayalal, Udeni;Joshi, Santosh;Oh, Soon-Ok;Park, Jung-Shin;Koh, Young Jin;Hur, Jae-Seoun
    • Mycobiology
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    • v.41 no.1
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    • pp.13-17
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    • 2013
  • Hypotrachyna (Vainio) Hale is a somewhat rare lichen genus found on the Korean Peninsula. Since it was first recorded more than two decades ago, no detailed taxonomic or revisionary study of the genus has been conducted. Thus, the present study was conducted to carry out a detailed taxonomic and revisionary study of Hypotrachyna in South Korea. This study was based on specimens deposited in the Korean Lichen Research Institute (KoLRI). Detailed taxonomic studies and a literature review confirmed the presence of seven species of Hypotrachyna from South Korea, including one new record, Hypotrachyna nodakensis (Asahina) Hale. Descriptions of each species with their morphological, anatomical and chemical characters together with a key to all known Hypotrachyna species are presented.

DEEP-South: A New Taxonomic Classification of Asteroids

  • Roh, Dong-Goo;Moon, Hong-Kyu;Shin, Min-Su;Lee, Hee-Jae;Kim, Myung-Jin
    • The Bulletin of The Korean Astronomical Society
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    • v.41 no.2
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    • pp.49.1-49.1
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    • 2016
  • Asteroid taxonomy dates back to the mid-1970's and is based mostly on broadband photometric and spectroscopic observations in the visible wavelength. Different taxonomic classes have long been characterized by spectral slope shortward of 0.75 microns and the absorption band in 1 micron, the principal components. In this way, taxonomic classes are grouped and divided into four broad complexes; silicates (S), carbonaceous (C), featureless (X), Vestoids (V), and the end-members that do not fit well within the S, C, X and V complexes. The past decade witnessed an explosion of data due to the advent of large-scale asteroid surveys such as SDSS. The classification scheme has recently been expanded with the analysis of the SDSS 4th Moving Object Catalog (MOC 4) data. However, the boundaries of each complex and subclass are rather ambiguously defined by hand. Furthermore, there are only few studies on asteroid taxonomy using Johnson-Cousins filters, and those were conducted on a small number of objects, with significant uncertainties. In this paper, we present our preliminary results for a new taxonomic classification of asteroids using SMASS, Bus and DeMeo (2014) and the SDSS MOC 4 datasets. This classification scheme is simply represented by a triplet of photometric colors, either in SDSS or in Johnson-Cousins photometric systems.

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Taxonomic Studies on Soil Mites (Acari: Oribatei) of Korea (한국산 토양서식성응애(응애목: 날개응애아목)의 분류에 관한 연구)

  • 최성직
    • Korean journal of applied entomology
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    • v.33 no.1
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    • pp.39-50
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    • 1994
  • In the course of the taxonomic study on onbatid mites from Korea, the author obtained one nau genus, 5 new species, 1 new subspecies, and 5 species unrecorded in Korea for th first time. They are Koreonbates foliatus gen. n, sp. n., Hermannio neotricha sp. n., Xyiobates geonjiensis sp. n., Defectamems sungohi sp. n., Protoripoda flagellato sp. n., Liocarus gommatus coreanus ssp. n., Liocarus polychoihomus Wen, 1991, Tectodamoeus armatus Aok, 1984, T striatus Enami et Aoki, 1988. Oripoda trilabiata Hammer, 1961, and Dometorino tuberculata Aoki, 1984. And keys to the species and subspec~es of genera Liacorus, Defectamems, and Protoripoda are present All the specimens are deposited at the Lab of Plant Protection, Coli, ot Agr, Won Kwang Univ., hi, Korea. KEY WORDS Taxonomic, Acari, Oribatei, Korea.

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Simple Assessment of Taxonomic Status and Genetic Diversity of Korean Long-Tailed Goral (Naemorhedus caudatus) Based on Partial Mitochondrial Cytochrome b Gene Using Non-Invasive Fecal Samples

  • Kim, Baek-Jun
    • Proceedings of the National Institute of Ecology of the Republic of Korea
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    • v.2 no.1
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    • pp.32-41
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    • 2021
  • South Korea presently harbors less than 800 long-tailed gorals (Naemorhedus caudatus), an endangered species. I report for the first time on the taxonomic status and genetic diversity of the Korean species using non-invasive fecal sampling based on mitochondrial cytochrome b gene sequence analyses. To determine the taxonomic status of this species, I reconstructed a consensus neighbor-joining tree and generated a minimum spanning network combining haplotype sequences obtained from feces with a new goral-specific primer set developed using known sequences of the Korean goral and related species (e.g., Russian goral, Chinese goral, Himalayan goral, Japanese serow, etc.). I also examined the genetic diversity of this species. The Korean goral showed only three different haplotypes. The phylogenetic tree and parsimony haplotype network revealed a single cluster of Korean and Russian gorals, separate from related species. Generally, the Korean goral has a relatively low genetic diversity compared with that of other ungulate species (e.g., moose and red deer). I preliminarily showcased the application of non-invasive fecal sampling to the study of genetic characteristics, including the taxonomic status and genetic diversity of gorals, based on mitochondrial DNA. More phylogenetic studies are necessary to ensure the conservation of goral populations throughout South Korea.

Taxonomic Studies on Alternaria in Korea(1)

  • Cho, Hye-Sun;Kim, Byung-Ryun;Yu, Seung-Hun
    • Mycobiology
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    • v.29 no.1
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    • pp.27-42
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    • 2001
  • The taxonomy of the Alternaria spp. has been a subject, of controversy because of their high variability in conidial morphology and polymorphism displayed even in pure cultures. The published Korean literature on the genus Alternaria is scattered and fragmentary, and pertains to about 25 species with special emphasis on occurrence and pathogenicity, but mycological studies on this group of fungi are insufficient. This is the first series of detailed and consolidated account of Korean species of Alternaria, which includes 11 species; viz., Alternaria brassicae, A. brassicicola, A. cinerariae, A. dauci, A. dianthi, A. dianthicola, A. helianthi, A. helianthinffciens, A. iridicola, A. japonica and A. protenta. Detailed diagnostic descriptions, specific characterizations, taxonomic discussions and illustrations for each species are presented.

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Evaluation of 16S rRNA Databases for Taxonomic Assignments Using a Mock Community

  • Park, Sang-Cheol;Won, Sungho
    • Genomics & Informatics
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    • v.16 no.4
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    • pp.24.1-24.4
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    • 2018
  • Taxonomic identification is fundamental to all microbiology studies. Particularly in metagenomics, which identifies the composition of microorganisms using thousands of sequences, its importance is even greater. Identification is inevitably affected by the choice of database. This study was conducted to evaluate the accuracy of three widely used 16S databases-Greengenes, Silva, and EzBioCloud-and to suggest basic guidelines for selecting reference databases. Using public mock community data, each database was used to assign taxonomy and to test its accuracy. We show that EzBioCloud performs well compared with other existing databases.