ALGAE

The Korean Society of Phycology (한국조류학회(藻類))
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Intraspecific variation of gene structure in the mitochondrial large subunit ribosomal RNA and cytochrome c oxidase subunit 1 of Pyropia yezoensis (Bangiales, Rhodophyta)

  • Hwang, Il Ki (Aquatic Plant Variety Center, National Institute of Fisheries Science) ;
  • Kim, Seung-Oh (Aquatic Plant Variety Center, National Institute of Fisheries Science) ;
  • Hwang, Mi Sook (Aquatic Plant Variety Center, National Institute of Fisheries Science) ;
  • Park, Eun-Jeong (Seaweed Research Center, National Institute of Fisheries Science) ;
  • Ha, Dong-Soo (Seaweed Research Center, National Institute of Fisheries Science) ;
  • Lee, Sang-Rae (Marine Research Institute, Pusan National University)
  • Received : 2017.10.29
  • Accepted : 2018.02.20
  • Published : 2018.03.15
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Abstract

Red algal mitochondrial genomes (mtDNAs) can provide useful information on species identification. mtDNAs of Pyropia / Porphyra (Bangiales, Rhodophyta) have shown diverse variation in their size and gene structure. In particular, the introns and intronic open reading frames found in the ribosomal RNA large subunit gene (rnl) and cytochrome c oxidase subunit 1 gene (cox1) significantly vary the mitochondrial genome size in Pyropia / Porphyra species. In this study, we examined the exon / intron structure of rnl and cox1 genes of Pyropia yezoensis at the intraspecific level. The combined data of rnl and cox1 genes exhibited 12 genotypes for 40 P. yezoensis strains, based on the existence of introns. These genotypes were more effective to identify P. yezoensis strains in comparison to the traditional DNA barcode cox1 marker (5 haplotypes). Therefore, the variation in gene structure of rnl and cox1 can be a novel molecular marker to discriminate the strains of Pyropia species.

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References

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