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Selection of Agaricus bitorquis hybrid strains based on RAPD analysis

RAPD분석을 통한 여름양송이(Agaricus bitorquis)의 교잡주 선발

  • Oh, Youn-Lee (Department of Biotechnology College of Life Sciences and Biotechnology Korea University) ;
  • Jang, Kab-Yeul (Mushroom Science Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Kong, Won-Sik (Mushroom Science Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Shin, Pyung-Gyun (Mushroom Science Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Kim, Eun-Sun (Mushroom Science Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Oh, Min ji (Mushroom Science Division, National Institute of Horticultural and Herbal Science, RDA) ;
  • Choi, In-Geol (Department of Biotechnology College of Life Sciences and Biotechnology Korea University)
  • 오연이 (고려대학교 생명공학과 대학원 생명공학과&BK21플러스) ;
  • 장갑열 (농촌진흥청 국립원예특작과학원 버섯과) ;
  • 공원식 (농촌진흥청 국립원예특작과학원 버섯과) ;
  • 신평균 (농촌진흥청 국립원예특작과학원 버섯과) ;
  • 김은선 (농촌진흥청 국립원예특작과학원 버섯과) ;
  • 오민지 (농촌진흥청 국립원예특작과학원 버섯과) ;
  • 최인걸 (고려대학교 생명공학과 대학원 생명공학과&BK21플러스)
  • Received : 2015.09.08
  • Accepted : 2015.09.30
  • Published : 2015.09.30

Abstract

Agaricus bitorquis is an edible white mushroom of the genus that is cultivated at high temperature($25{\pm}1^{\circ}C$) unlike A. bisporus is cultivate at $16{\pm}2^{\circ}C$. Unlike Agaricus bisporus, an edible white A. bitorquis mushroom is cultivated at high temperature ($25{\pm}1^{\circ}C$). Most farmers cultivate this mushroom for a long cultivation period in Korea. For this reason, we made heterokayons to develop a new cultivar that generate fruitbodies for short cultivation period. Over one hundred SSIs(single spores isolates) were collected from selected A. bitorquis ASI1151 and ASI1349 strains. Seventy-three SSIs were germinated on CDA(compost dextrose agar) media after 20 days (minimum) or 83 days (maximum) incubation under different media condition. The mycelial growth rate of germinated SSIs was different. 9 homokaryons in ASI 1151 and 11 homokaryons in ASI 1349 from SSIs were selected by OPN-02 primer in RAPD analaysis. Also this primer was used to select heterokaryon that cross among each homokaryon with compatible locus. Therefore 44 compatible matings were confirmed of 99 crossed lines.

여름양송이(Agiricus bitorquis)는 Agaricus속에 속하는 버섯으로 일반적으로 양송이가 $16{\pm}2^{\circ}C$에서 발생되는 것과 달리 $25{\pm}1^{\circ}C$에서 자라는 고온성버섯이다. 우리나라에서 여름양송이는 대부분 오랜 기간 동안 재배를 하고 있다. 이에 따라 재배주기가 짧은 양송이 품종을 개발을 위한 교잡균주를 확보하였다. 수집된 균주 중 선발된 여름 양송이균주 ASI 1151와 ASI 1349에서 각각 100개 이상 단포자를 수집하였다. 배지별 단포자 발아시험의 결과에서 보면, CDA배지에서 73개의 단포자들의 발아되었고, 최소기간 20일, 최장기간 83일 후 포자발아가 진행되었다. 발아된 단포자들의 균사생장속도는 각 균주마다 달랐으며, RAPD마커 OPN-2를 가지고 ASI 1151에서 9개, ASI 1349에서 13개 동핵균주를 선발하였다. 또는 이 마커를 이용하여 99개의 교잡 중에 44균주의 친화성 유전자좌를 가진 동핵균주가 서로 교잡한 교잡주를 선발하였다.

Keywords

References

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