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Characterization of simple sequence repeats (SSRs) in Pleurotus pulmonarius cultivars

산느타리(Pleurotus pulmonarius) 품종의 초위성체(simple sequence repeats) 특성구명

  • Choi, Jong In (Gyeonggi-do Agricultural Research &Extension Services) ;
  • Na, Kyeong Sook (Department of mushroom science, Korea National college of Agriculture and fisheries) ;
  • Oh, Min-Ji (Mushroom Research Division, National Institute of Horticultural & Herbal Science, RDA) ;
  • Ryu, Jae-San (Department of mushroom science, Korea National college of Agriculture and fisheries)
  • 최종인 (경기도농업기술원 버섯연구소) ;
  • 나경숙 (한국농수산대학 버섯학과) ;
  • 오민지 (농촌진흥청 버섯과) ;
  • 류재산 (한국농수산대학 버섯학과)
  • Received : 2021.02.09
  • Accepted : 2021.11.05
  • Published : 2021.12.31

Abstract

Simple sequence repeats (SSRs) were isolated from major Pleurotus pulmonarius cultivars in Korea, namely 'HS47' (monokaryon, gamete of 'Santari'), 'GB19' (monokaryon, gamete of 'Santari'), 'Hosan,' 'Yeoleumneutali1,' 'Sambok,' 'Gangsan,' 'Yaksan,' 'Jasan,' 'Hyangsan,' and 'Yeoleumneutali2,' and characterized via HiSeq genome sequencing and bioinformatic analysis. The genome sizes of the monokaryons 'HS47' and 'GB19' were estimated to be 37.3 and 37.2 Mb, respectively, and those of the other dikaryotic cultivars ranged from 47.1 to 61.1 Mb. A total of 711 (smallest) and 1,106 (1.5 times the smallest) SSRs were found in the 'HS47' and 'Gangsan' genomes, respectively. Hexanucleotide and octanucleotide motifs accounted for the top two fractions of all SSRs. CGA/TCG, A/T, and CTC/GAG were the most frequently detected nucleotides in the SSRs. Most of the SSRs were 21~30 nucleotides long (hypervariable for application), accounting for 70% of all lengths of SSRs.

국내의 주요 산느타리 품종인 호산47(일핵, 산타리 배우자), GB19(일핵, 산타리 배우자), 호산, 여름느타리1호, 삼복, 강산, 약산, 자산, 향산, 여름느타리2호의 유전체를 Hiseq을 이용하여 해독하였고 이 서열 정보에서 SSR을 분리하여 특성구명을 하였다. 일핵균사인 호산 47, GB19의 유전체의 크기는 각각 37.3와 37.2 Mbp이고, 이핵균사인 나머지 산느타리 품종의 유전체 크기는 47.1~61.1 Mbp인 것으로 밝혀졌다. 품종별 총 SSR의 수는 HS47이 711개로 가장 적고, 강산이(GS)이 1.5배 많은 1,106개로 최다를 기록하였다. SSR의 repeat motif 중에서 hexanucleotide와 octanucleotide가 가장 많은 빈도로 관찰되었고, 가장 많이 관찰되는 반복서열은 CGA/TCG, A/T, CTC/GAG이었다. SSR의 길이는 모든 품종에서 변이가 많아 유용성이 높은 20~30 nt가 가장 높은 비중인 70%를 차지하였다.

Keywords

Acknowledgement

본 연구는 본 연구는 농림축산식품부 Golden Seed project 사업(원예종자사업단, 과제번호: 213007-05-5-SBI30)에 의해 이루어진 것으로 연구비 지원에 감사드립니다.

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