• Title/Summary/Keyword: Complete mitochondrial DNA

검색결과 53건 처리시간 0.02초

Characterization of the first mitogenomes of the smallest fish in the world, Paedocypris progenetica, from peat swamp of Peninsular Malaysia, Selangor, and Perak

  • Hussin, NorJasmin;Azmir, Izzati Adilah;Esa, Yuzine;Ahmad, Amirrudin;Salleh, Faezah Mohd;Jahari, Puteri Nur Syahzanani;Munian, Kaviarasu;Gan, Han Ming
    • Genomics & Informatics
    • /
    • 제20권1호
    • /
    • pp.12.1-12.7
    • /
    • 2022
  • The two complete mitochondrial genomes (mitogenomes) of Paedocypris progenetica, the smallest fish in the world which belonged to the Cyprinidae family, were sequenced and assembled. The circular DNA molecules of mitogenomes P1-P. progenetica and S3-P. progenetica were 16,827 and 16,616 bp in length, respectively, and encoded 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and one control region. The gene arrangements of P. progenetica were identical to those of other Paedocypris species. BLAST and phylogenetic analyses revealed variations in the mitogenome sequences of two Paedocypris species from Perak and Selangor. The circular DNA molecule of P. progenetica yield a standard vertebrate gene arrangement and an overall nucleotide composition of A 33.0%, T 27.2%, C 23.5%, and G 15.5%. The overall AT content of this species was consistent with that of other species in other genera. The negative GC-skew and positive AT-skew of the control region in P. progenetica indicated rich genetic variability and AT nucleotide bias, respectively. The results of this study provide genomic variation information and enhance the understanding of the mitogenome of P. progenetica. They could later deliver highly valuable new insight into data for phylogenetic analysis and population genetics.

mtDNA D-loop의 염기서열에 의한 제주견과 우리나라 재래견 및 외국견품종과의 유연관계 (Phylogenetic Relationships of Jeju Dogs to Other Domestic and Foreign Dog Breeds Determined by Using mtDNA D-loop Sequences)

  • 김미경;김남영;이성수;김규일;양영훈
    • Journal of Animal Science and Technology
    • /
    • 제53권4호
    • /
    • pp.303-310
    • /
    • 2011
  • mtDNA D-loop 970 bp의 염기서열을 이용하여 제주견과 우리나라의 토종견인 진도견, 풍산견, 삽살견과의 관계와 외국 품종들과의 유연관계를 분석하였다. 또한 초가변영역인 598 bp의 D-loop 부위가 보고된 염기서열들은 추가로 GenBank에서 수집하여 전체 30개의 품종으로부터 214종의 단상형들을 이용하여 AMOVA 분석을 하였다. 염기서열 분석결과 제주견에서 5종류, 진도견 4종류, 삽사리 4종류, 풍산견 5종류, 이스트라이카와 웨스트라이카(Canis familiaris) 각 2종류, 회색늑대(Canis lupus) 2종류, 코요테(Canis latrans) 2종류의 단상형을 얻었다. 한국, 일본, 중국, 유럽의 견품종 사이에 지역의 차이로부터 오는 변이성(1.4%)은 동일 지역에 서로 다른 품종들 사이의 변이(16.2%) 보다도 매우 적은 변이를 보이고 있었다. 개의 조상으로 여기는 늑대와 오늘날 개의 집단과의 염기서열 분산성분 분석에서 개(1.63%)와 늑대(3.64%)의 집단내 변이보다는 개와 늑대 사이의 진단간 변이(4.51%)가 높게 나타난 것으로 나타났으며, 이 값을 근거로 하면 개와 늑대사이에 유전적 분기시기는 약 1~2백 만년 전인 것으로 추정되었다. 염기서열의 변이성과 유연관계분석에서 제주견, 진도견, 풍산견, 삽살견 모두 독특한 계통분기를 형성하지 못했다. 즉 이러한 결과는 국내 토종견들 사이와 또는 유입된 외래품종들 사이에 오랜 세월 동안 서로 상당한 교류가 있었을 것으로 생각되었다. 제주견에서는 삽살이, 진도견, 풍산견의 염기서열과 가까운 유연관계를 보이는 단상형들이 산포되어 있는 것으로 확인되어 제주견 집단이 우리나라 재래종들과의 모계조상에 있어서 구분은 어려운 것으로 확인되었다. 제주견이 집단으로 고정정도를 가늠하는 Fixation index인 Fst값은 진도견, 풍산견, 삽살견 가운데 가장 낮게 나타났다.

Comprehensive comparative analysis of chloroplast genomes from seven Panax species and development of an authentication system based on species-unique single nucleotide polymorphism markers

  • Nguyen, Van Binh;Giang, Vo Ngoc Linh;Waminal, Nomar Espinosa;Park, Hyun-Seung;Kim, Nam-Hoon;Jang, Woojong;Lee, Junki;Yang, Tae-Jin
    • Journal of Ginseng Research
    • /
    • 제44권1호
    • /
    • pp.135-144
    • /
    • 2020
  • Background: Panax species are important herbal medicinal plants in the Araliaceae family. Recently, we reported the complete chloroplast genomes and 45S nuclear ribosomal DNA sequences from seven Panax species, two (P. quinquefolius and P. trifolius) from North America and five (P. ginseng, P. notoginseng, P. japonicus, P. vietnamensis, and P. stipuleanatus) from Asia. Methods: We conducted phylogenetic analysis of these chloroplast sequences with 12 other Araliaceae species and comprehensive comparative analysis among the seven Panax whole chloroplast genomes. Results: We identified 1,128 single nucleotide polymorphisms (SNP) in coding gene sequences, distributed among 72 of the 79 protein-coding genes in the chloroplast genomes of the seven Panax species. The other seven genes (including psaJ, psbN, rpl23, psbF, psbL, rps18, and rps7) were identical among the Panax species. We also discovered that 12 large chloroplast genome fragments were transferred into the mitochondrial genome based on sharing of more than 90% sequence similarity. The total size of transferred fragments was 60,331 bp, corresponding to approximately 38.6% of chloroplast genome. We developed 18 SNP markers from the chloroplast genic coding sequence regions that were not similar to regions in the mitochondrial genome. These markers included two or three species-specific markers for each species and can be used to authenticate all the seven Panax species from the others. Conclusion: The comparative analysis of chloroplast genomes from seven Panax species elucidated their genetic diversity and evolutionary relationships, and 18 species-specific markers were able to discriminate among these species, thereby furthering efforts to protect the ginseng industry from economically motivated adulteration.