• Plant Resources
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• 제3권3호
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• pp.179-183
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• 2000

The present study was carried out to clarify the chromosome numbers and karyotype of Atractylodes japonica Koidz. ex Kitam. and A. macrocephala Koidz.. The somatic chromosome numbers of two species were same; basic chromosome number x=12, and somatic chromosome numbers 2n=24. The present result of A. japonica Koidz. ex Kitam. was same to previously reports and that of A. macrocephala Koidz. was reported first in this study. Size and shape of chromosome were some different from A. japonica Koidz. ex Kitam. and A. macrocephala Koidz.. The karyotype of A. japonica Koidz. ex Kitam. was described as follows; 2n : 24 : 8L + 14M +2S : 2 $A^{sm}$ +2 $B^{m}$ +2 $C^{m}$ +2 $D^{st}$ + 2 $E^{m}$ +2 $F^{m}$ +2 $G^{m}$ +2 $H^{sm}$ + 2 $I^{m}$ + 2 $J^{m}$ + 2 $K^{m}$ + 2 $L^{m}$ . And the karyotype of A. macrocephata Koidz. was described as follows; 2n : 24 : 10L +12M +25 : 2 $A^{m}$ +2 $B^{sm}$ +2 $C^{sm}$ +2 $D^{sm}$ +2 $E^{sm}$ +2 $E^{sm}$ +2 $G^{sm}$ +2 $H^{m}$ +2 $I^{m}$ 2 $J^{m}$ +2 $K^{m}$ +2 $L^{m}$ . .

• Mass Spectrometry Letters
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• 제12권3호
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• pp.60-65
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• 2021

As a part of the Chromosome-centric Human Proteome Project (C-HPP), we have developed a few algorithms for accurate identification of missing proteins, alternative splicing variants, single amino acid variants, and characterization of function unannotated proteins. We have found missing proteins, novel and known ASVs, and SAAVs using LC-MS/MS data from human brain and olfactory epithelial tissue, where we validated their existence using synthetic peptides. According to the neXtProt database, the number of missing proteins in chromosome 11 shows a decreasing pattern. The development of genomic and transcriptomic sequencing techniques make the number of protein variants in chromosome 11 tremendously increase. We developed a web solution named as SAAvpedia for identification and function annotation of SAAVs, and the SAAV information is automatically transformed into the neXtProt web page using REST API service. For the 73 uPE1 in chromosome 11, we have studied the function annotaion of CCDC90B (NX_Q9GZT6), SMAP (NX_O00193), and C11orf52 (NX_Q96A22).

• 대한한의학방제학회지
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• 제14권1호
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• pp.141-167
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• 2006

The genotoxicity of water extract of Bojungikkeehapdaechilki-tang was tested by In Vitro Chromosome Aberration Test. Bacterial Reverse Mutation Assay and Micronucleus test according to OECD Guidelines and KFDA Guidelines. The obtained results were as follows : 1. Chromosome Aberration Test: In Vitro Chromosome Aberration Test of Bojungikkeehapdaechilki-tang extracts was carried out using cultured Chinese hamster lung cells in the presence and absence of metabolic activation system(S-9 mix). No significant changes in the number of aberrant metaphases having structural and number of aberrations were detected in Bojungikkeehapdaechilki-tang extracts treated groups. 2. Bacterial Reveres Mutation Assay: Bojungikkeehapdaechilki-tang extracts was evaluated for its potential to induce reverse mutation in the histidine auxotroph strains of Salmonella typhimurium such as TA100, TA1535, TA98 and TAl537 and the tryptophan auxotroph strain of Escherichia coli WP2 uvrA. No significant changes in the number of revertant colonies compared to its negative control were detected in Bojungikkeehapdaechilki-tang extracts treated groups against all 5 strains. 3. Micronucleus test: Micronucleus test of Bojungikkeehapdaechilki-tang extracts were performed using specific pathogen free 7-week old male ICR mouse. No significant changes in the number of micronucleated polychromatic erythrocytes among 2000 polychromatic erythrocytes compared to negative control were detected in all Bojungikkeehapdaechilki-tang extracts treated groups. In summarized above-mentioned results, it is concluded that Bojungikkeehapdaechilki-tang extracts have not genotoxicity against In Vitro Chromosome Aberration Test, Bacterial Reverse Mutation Assay and Micronucleus test.

• 미생물학회지
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• 제20권3호
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• pp.134-146
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• 1982

This experiment was designed to elucidate the life cycle of 7 species (Rh.nigricans, Rh. delemar, Rh.oryzae, Rh.acidus, Rh.tritici, Rh. formosaensis and Rh. japonicus) in genus Rhizopus isolated from Korean soil, so as to seize the appropriate stage for detecting their chromosomal number and nuclear size under the method of thin layer slide culture using modified Rogers(1965a) medium. The results are summarized as the folowings ; 1. The haploid chromosome number are found 16 in Rh. japonicus are 8, respectively. 2. Comparing the 7 species of Rhizopus with each other, it may be concluded that the basic haploid chromosome number of genus Rhizopus distributed in Korean soil are 8 and that Rh. nigricans is double of the basic hapolid chromosome number (n = 16). Besides them, the other two species (Rh. tritici and Rh. formosaensis) are believed aneuploids.

• 식물분류학회지
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• 제48권4호
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• pp.260-277
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• 2018

The evolution of chromosome numbers and the karyotype structure is a prominent feature of plant genomes contributing to or at least accompanying plant diversification and eventually leading to speciation. Polyploidy, the multiplication of whole chromosome sets, is widespread and ploidy-level variation is frequent at all taxonomic levels, including species and populations, in angiosperms. Analyses of chromosome numbers and ploidy levels of 252 taxa of Korean non-commelinid monocots indicated that diploids (ca. 44%) and tetraploids (ca. 14%) prevail, with fewer triploids (ca. 6%), pentaploids (ca. 2%), and hexaploids (ca. 4%) being found. The range of genome sizes of the analyzed taxa (0.3-44.5 pg/1C) falls well within that reported in the Plant DNA C-values database (0.061-152.33 pg/1C). Analyses of karyotype features in angiosperm often involve, in addition to chromosome numbers and genome sizes, mapping of selected repetitive DNAs in chromosomes. All of these data when interpreted in a phylogenetic context allow for the addressing of evolutionary questions concerning the large-scale evolution of the genomes as well as the evolution of individual repeat types, especially ribosomal DNAs (5S and 35S rDNAs), and other tandem and dispersed repeats that can be identified in any plant genome at a relatively low cost using next-generation sequencing technologies. The present work investigates chromosome numbers (n or 2n), base chromosome numbers (x), ploidy levels, rDNA loci numbers, and genome size data to gain insight into the incidence, evolution and significance of polyploidy in Korean monocots.

• 한국균학회지
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• 제17권2호
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• pp.76-81
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• 1989

Fusarium oxysporum은 하나의 종내에 많은 formae speciales(분화종)과 races 등이 분화되어 있다. 그 중에서 10균주에 대하여 균사 내에서의 영양핵의 분열상을 찾아 Giemsa staining 용액으로 염색하여 그들의 염색체 수를 비교 관찰하였다. 균주에 따라 염색체 수에 차이가 있었으며 2균주(F. oxysporum f. sp. lycoperici, F. oxysporum Kangnung D2)는 n=4, 2균주(F. oxysporum S Sachun 3, F. oxysporum S Kohung 2)는 n=5, 5균주(F. oxysporum S Kohung 3, F. oxysporum CS Hongchun D16, F. oxysporum S Bosung 5, F. oxysporum S Sunchun 4, F. oxysporum S Haenam 4)는 n= 7개를 관찰할 수 있었고 Australia의 Sydney 대학에서 분양받은 F. oxysporum 14-39는 n=8개로 전체로 보아 4-8개의 염색체를 관찰할 수 있었다. 본인의 앞서 본문의 결과와 종합하여 고찰할 때 F. oxysporum의 기본염색체 수는 반수체가 4개로 추론되며 여기에서부터 여러가지 요인으로 인하여 diploidy, aneuploidy가 되어 다양한 염색체 수를 가진 것으로 사료된다.

• 미생물학회지
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• 제27권4호
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• pp.342-347
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• 1989

Fusarium 속의 20균주를 PDA 배지에서 배양하고. HCI-Giemsa 염색법을 이용하여 균사 내에서의 영양핵의 핵분열을 관찰하였고, 염색체 수를 세었다. 관찰한 모든 Fusarium 속의 균주들익 염색체 수는 4-8개 사이에 있었다. 그 중에서 3균주인 F. solari S Hongchun D4. F. moniiforme(from banana), F. raphani (from radish)는 n=8개이고, F, solani 7468(from Sydney), F, solani 7475 (from Sydney), F, oxyporum (from tomato), F, oxyporum(from tomato). F F. roseum(from rice), F, sporotrichioides C. Jungsun 1, F. avenaceum C Kosung 6. F, avenaceum46039 등의 7균주에서는 n=7개였다 F. monilzfonne (from rice), F. graminellrum, F. probiferatum 6787(from Sydney), F. anguioides ATCC20351의 5균주는 n=6개 F. moniliforme NRRL2284. F. poae NRRL3287. F. tricintum NRRL 3299의 3균주는 n=5개였고 가장 적은 수의 n=4개인 균주로는 F. sporotrichioides NRRL3510과 F. equiscli KFCC 11843 IFO 030198의 3균주였다. 이상의 균주들의 염색체 수를 비교 고찰할 때 Fusarium 속의 기본 염색체 수는 반수체가 4개이며 종 분화과정에서 이수체와 배수체가 되었을 것으로 추론된다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2019년도 추계학술대회
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• pp.24-24
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• 2019

Iris L. is a perennial genus comprising approximately 300 species worldwide, with the greatest number of endemic species occurring in Asia. Iris is one of the largest genera in the family Iridaceae and includes ca. 15 species native to Korea. Although chromosome number change, karyotype restructuring, and genome size variation play an important role in plant genome diversification, understanding the karyotype variation in Korean Iris species has been hampered by the wide range of base chromosome number (x = 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22) reported to date. This study documents the chromosome numbers, karyotype structure and genome size variation in Iris ruthenica K. Gawl., an endangered species in Korea obtained using classic Feulgen staining and flow cytometry. The chromosome number of all investigated plants from the nine populations was 2n = 42. All individuals studied possessed metacentric and submetacentric chromosomes. The genome size of the I. ruthenica in eight wild populations ranged from 2.39 pg/1C to 2.45 pg/1C ($2.42{\pm}0.02pg/1C$: $mean{\pm}SD$). This study provides the first report of genome size variation in Iris ruthenica in Korea. This study lays foundation for cytogenetic further analyses employing by fluorescence in situ hybridization (FISH) to better understand the chromosomal evolution in this species and in the whole genus.

• 식물분류학회지
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• 제47권4호
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• pp.304-307
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• 2017

We report somatic chromosome numbers for three species belonging to the Euphorbia pekinensis complex distributed in Far East Asia. In E. pekinensis populations distributed in Korea, 2n = 28 and 56 were found, while the Japanese native E. lasiocaula was also found at 2n = 28 and 56 and the Japanese endemic E. sinanensis was found at 2n = 20. Based on the number of chromosomes, E. lasiocaula distributed in Japan supports treatment as a variety of E. pekinensis rather than as a different species, while E. sinanensis should be recognized as a distinct species rather than as a variety of E. pekinensis. In the same populations of E. pekinensis and E. lasiocaula, diploid and tetraploid individuals were found, and the diversity of these chromosome numbers was consistent with the morphological diversity of these populations, suggesting the future evolutionary potential of this species.

• 식물분류학회지
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• 제39권1호
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• pp.42-47
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• 2009

본 연구에서 한국산 갈퀴덩굴속(Galium) 14 분류군의 체세포염색체수를 밝혔다. 본 속의 체세포염색체수는 2n = 22, 24, 44, 48, 66, 72, 77, 88로 나타났으며, 기본염색체수는 x = 11, 12로 확인되었다. x = 11의 기본염색체수를 갖는 분류군들은 2배체, 4배체, 7배체, 8배체의 다양한 배수체로 나타났으며, x = 12의 기본염색체수를 갖는 분류군에서도 4배체, 6배체가 확인되었다. 갈퀴덩굴(G. spurium var. echinospermon (Wallr.) Hayek, 2n = 44)을 비롯하여 좀네잎갈퀴(G. gracilens (A. Gray) Makino, 2n = 22), 산갈퀴(G. pogonanthum Franch. & Sav., 2n = 22, 44), 네잎갈퀴(G. trachyspermum A. Gray, 2n = 22, 44), 검은개선갈퀴(G. japonicum (Maxim.)Makino & Nakai, 2n = 77), 개선갈퀴(G. trifloriforme Kom., 2n = 44), 큰잎갈퀴(G. dahuricum Turcz. var. dahuricum, 2n = 48, 72), 흰갈퀴(G. dahuricum var. tokyoense (Makino) Cufod., 2n = 22), 민둥갈퀴(G. kinuta Nakai & Hara, 2n = 66), 흰솔나물(G. verum var. trachycarpum for. nikkoense (Nakai) Ohwi, 2n = 44), 애기솔나물(G. verum var. asiaticum for. pusillum (Nakai) M. Park, 2n = 44) 등 11분류군의 염색체수가 본 연구를 통해 새로이 밝혀졌다. 긴잎갈퀴(G. boreale L., 2n = 22)와 솔나물(G. verum var. asiaticum Nakai for. asiaticum, 2n = 44)의 염색체수는 기존의 연구결과와 동일하였고, 가는네잎갈퀴(G. trifidum L., 2n = 22)의 염색체수는 이전의 연구 결과와 달랐다. 큰잎갈퀴와 흰갈퀴는 Sect. Leptogalium의 같은 종(G. dahuricum)에 속하지만 기본염색체수는 각각 x = 12, x = 11로차이가 났다. 체세포염색체수에서도 큰잎갈퀴는 2n = 48(4배체) 또는 2n = 72(6배체)인 반면, 흰갈퀴는 2n = 22(2배체)로 확인되어 뚜렷하게 구별되었다. 본 연구 결과 체세포염색체수는 갈퀴덩굴속의 절간 유연관계를 파악하고 분류군의 한계를 논의하는데 유용한 형질로 파악되었다.