• 제목/요약/키워드: Genus identification

검색결과 563건 처리시간 0.031초

황해 강달이속(Collichthys) 치어 2종의 분자동정 및 형태비교 (Molecular Identification and Morphological Comparison of Juveniles of Two Collichthys Species (Pisces: Sciaenidae) from the Yellow Sea)

  • 이수정;김진구
    • 한국수산과학회지
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    • 제47권1호
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    • pp.79-83
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    • 2014
  • Thirty five juveniles belonging to the genus Collichthys were collected using a bag net at Gang-wha-do, in the eastern Yellow Sea, between July and September, 2012, and identified using combined genetic and morphological methods. We sequenced 316 base pairs of mitochondrial DNA cytochrome c oxidase subunit I of 35 individuals, of which 22 individuals were identified as Collichthys niveatus (12.9-47.6 mm in SL) and 13 as Collichthys lucidus (13.4-40.3 mm SL). Morphologically, the number of occipital crests, an important taxonomic character during the adult stage, could not distinguish the two species during the juvenile stage, but the shape of the first anal fin spine clearly distinguished the two species even among juveniles.

양식 틸라피아에 대한 유전학적 동정 (Genetic Identification of Hatchery Reared Tilapia Strains)

  • 김동수;박인석
    • 한국양식학회지
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    • 제3권1호
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    • pp.31-37
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    • 1990
  • Oreochromis속 틸라피아 10계통에 대한 세포유전학적 분석을 실시하였다. 염색체수(2n=44)와 각 염색체쌍은 10계통 모두에서 동일하였으며 heteromorphic한 성염색체는 어떠한 계통에서도 나타나지 않았다. 그러나 세포의 크기는 다양하여 O. niloticus는 핵의 부피가 21.0$\mu$ $m^3$, O. aureus는 22.4$\mu$ $m^3$로 가장 컸다.

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한국 제주도에서 채집된 갯물뱀(뱀장어목: 바다뱀과) 엽상자어(Leptocephalus)의 형태 및 분자동정 (Molecular and Morphological Identification of a Muraenichthys gymnopterus (Ophichthidae: Anguilliformes) Leptocephalus Collected on Jeju island, Korea)

  • 지환성;김진구
    • 한국수산과학회지
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    • 제45권5호
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    • pp.507-512
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    • 2012
  • One leptocephalus (TL 59.9 mm) from the family Ophichthidae collected from Jeju Island, Korea, was identified using morphological and molecular methods. Our ophichthid leptocephalus was identified as belonging to the genus Muraenichthys based on morphological characters: 157 myomeres; the origin of the dorsal fin located a little in front of the anus; a distinct melanophore present on the opercle; and six gut swellings present. An analysis of 886 base pairs of the 12S rRNA mtDNA sequences showed that our leptocephalus must be Muraenichthys gymnopterus, because its sequences were concordant with those of an adult M. gymnopterus (d=0.001) and next to those of Muraenichthys sp. leptocephalus (d=0.034). Here, we are the first to describe the morphological characteristics of the M. gymnopterus leptocephalus.

Numerical Identification of Streptomyces fIaveus Producing Antibiotic Substances Inhibitory to Plant Pathogenic Fungi

  • Lee, Jung-Yeop;Kim, Beom-Seok;Hwang, Byung-Kook
    • Journal of Microbiology and Biotechnology
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    • 제5권6호
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    • pp.324-334
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    • 1995
  • The actinomycete strain A 11 was antagonistic to plant pathogenic fungi Phytophthora capsid and Magnaporthe grisea. Based on the diaminopimelic acid (DAP) type and morphological characteristics examined by scanning electron microscopy, the strain A 11 was confirmed to belong to the genus Streptomyces. Based on Willcox probability and similarity level, the strain A 11 was numerically identified as Streptomyces flaveus using TAXON program of Ward and Goodfellow. Antibiotic production of S. flaveus strain A 11 was most favorable when cultured on glycerol yeast extract peptone (GYP) agar for 20 days at $28^{\circ}C$. The crude antibiotics from solid GYP agar cultures of the strain A 11 were most effective against Phytophthora capsici and Sclerotinia sclerotiorum among the fungi tested. Antifungal activity of the antibiotics against Alternaria solani, Botryosphaeria dothidea, Cercospora capsici, Magnaporthe grisea, and Rhizoctonia solani was somewhat high, whereas Colletotrichum gloeosporioides and Fusarium oxysporum f. sp. cucumerinum were rarely inhibited even at high concentrations.

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Species Identification of Wooden Structural Members of the Beomeo Temple

  • Eom, Young Geun;Kim, Hwa Sung;Xu, Guang Zhu
    • Journal of the Korean Wood Science and Technology
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    • 제33권2호통권130호
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    • pp.1-7
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    • 2005
  • Tree species of wooden structural members of the Beomeo Temple were identified based on light and scanning electron microscopic characters in the present study. Of 10 structural members, 9 softwoods and 1 hardwood were identified. Among softwood members, 7 belonged to hard pine of the Sylvestris section, and the remaining 2 to hard pine of other than the Sylvestris section and hemlock of the genus Tsuga, respectively. A single hardwood member was identified as white oak of the Prinus section under the subgenus Lepidobalanus.

사과 푸른곰팡이병의 길항미생물의 분리 및 동정 (Isolation and Identification of Antifungal Bacteria on Blue Mold in Apple)

  • 이인선;조정일
    • 한국식품위생안전성학회지
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    • 제14권2호
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    • pp.167-171
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    • 1999
  • In order to screen the antagonistic bacteria which inhibit the growth of the apple pathogen, Penicillum expansum, we isolated an effective bacterial strain and investigated into the antifungal activity of the antagonist and it's identification. The eleven strains of bacteria which strongly inhibited P. expansum were isolated from the nature, and the best antagonistic bacterial strain designated as CH142, was selected. The antagonistic strain CH142 was identified to be the genus Bacillus subtilis based on morphological and biochemical characterization. The CH142 showed 55.9% of antifungal activity against the growth of P. expansum. By the treatment of the culture broth and the heat treated culture filtrate of it, the B. subtilis CH142 showed 90% and 15% of antifungal activity, respectively.

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플랑크톤 모니터링 네트워크를 위한 Triadinium속의 동정 (Identification of Genus Triadinium for Plankton Monitoring Network)

  • 여환구
    • 한국산학기술학회:학술대회논문집
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    • 한국산학기술학회 2009년도 춘계학술발표논문집
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    • pp.842-844
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    • 2009
  • The major group which contains all the organisms that are commonly termed Dinoflagellates is called the division Pyrrophyta or Dinophyta in botanical systems and the order Dinoflagellida or Dinoflagellata in zoological systems. Most dinoflagellates are biflagellated solitary planktonic cells. A taxonomic survey of the dinoflagellate family, Triadiniaceae Dodge was conducted for plankton monitoring network in the coastal waters of Korea. Identification of species in water samples was usually done by using differential interference contrast (DIC), which revealed especially well lighted thecal structures. For the apparent three-dimensional image, scanning electron microscope (SEM) was used. Two species were identified and described, which were Triadinium orientale(Lindemann)Dodge and Triadinium sphaericum(Murray and Whitting)Dodge.

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장류용 강력국균 연구 2 (Studies on Koji for Optimum Conditions of Growth and Idenfication of Aspergillus spp.(Part2))

  • 이계호;장건형
    • 미생물학회지
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    • 제2권1호
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    • pp.17-18
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    • 1964
  • Ke Ho Lee and Kun Hyung Chang (Army Research and Testing Lab.): Studies on koji for optimum condition of growth and identification of Aspergillus spp. Cpart 2). Kor. J. Microbiol. Vol. 2, No. 1, p. 17-18 (1964). The experiments reported in this paper are concerned with the identifications, the growth conditions and lethal temperatures of the three strains of Aspergillus spp. which have been isolated from the soils and Meju (fermented soy bean in Korea). The results obtained in the light of the manual of Raper and Thom for identification of the Genus, Aspergillus, have been shown that the three strains of Aspergillus spp. are pertained to Aspergillus flavusoryzae group. The optimum temperature, pH and the lethal temperatures of the Aspergillus spp. have been measured.

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Improved characterization of Clematis based on new chloroplast microsatellite markers and nuclear ITS sequences

  • Liu, Zhigao;Korpelainen, Helena
    • Horticulture, Environment, and Biotechnology : HEB
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    • 제59권6호
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    • pp.889-897
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    • 2018
  • Currently, there is a lack of genetic markers capable of effectively detecting polymorphisms in Clematis. Therefore, we developed new markers to investigate inter- and intraspecific diversity in Clematis. Based on the complete chloroplast genome of Clematis terniflora, simple sequence repeats were explored and primer pairs were designed for all ten adequate repeat regions (cpSSRs), which were tested in 43 individuals of 11 Clematis species. In addition, the nuclear ITS region was sequenced in 11 Clematis species. Seven cpSSR loci were found to be polymorphic in the genus and serve as markers that can distinguish different species and be used in different genetic analyses, including cultivar identification to assist the breeding of new ornamental cultivars.

New Record of Sillago sinica (Pisces: Sillaginidae) in Korean Waters, and Re-identification of Sillago parvisquamis Previously Reported from Korea as S. sinica

  • Bae, Seung Eun;Kwun, Hyuck Joon;Kim, Jin-Koo;Kweon, Seon-Man;Kang, Chung Bae
    • Animal Systematics, Evolution and Diversity
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    • 제29권4호
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    • pp.288-293
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    • 2013
  • A single specimen of the genus Sillago, collected from Gwangyang, Korea, in May 2009, is characterized by XI first dorsal fin spines, 3 or 4 rows of melanophore pattern along the second dorsal fin membrane, and a darkish posterior margin of the caudal fin. Our specimen was identified as Sillago sinica reported as a new species; this identification is confirmed by mitochondrial DNA cytochrome oxidase subunit I sequences, which show that our specimen corresponds to S. sinica (d=0.000) and differs from the congeneric species Sillago parvisquamis (d=0.170). Comparisons of Korean specimens previously reported as S. parvisquamis with specimens of S. sinica show that the S. parvisquamis specimens are actually S. sinica. We propose the new Korean name "buk-bang-jeom-bo-ri-myeol" for S. sinica.