Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Isolation, Regeneration and Maturation Induction of Free-living Gametophytes of Saccharina japonica (Phaeophyceae)

갈조류 다시마 유리배우체의 분리, 재생 및 성숙 유도

  • 황은경 (국립수산과학원 해조류바이오연구센터) ;
  • 유호창 (국립수산과학원 해조류바이오연구센터) ;
  • 김세미 (국립수산과학원 해조류바이오연구센터) ;
  • 백재민 (국립수산과학원 해조류바이오연구센터) ;
  • 박찬선 (국립목포대학교 해양수산자원학과)
  • Received : 2015.04.23
  • Accepted : 2015.06.17
  • Published : 2015.06.30
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Abstract

Induction of regeneration and maturation of the free-living gametophytes of Saccharina japonica was studied at four temperatures (5, 10, 15 and $20^{\circ}C$), four levels of irradiance (5, 10, 20 and $40{\mu}mol\;m^{-2}\;s^{-1}$) and three photoperiods (14 : 10, 12 : 12 and 10 : 14 h L : D). Female gametophyte fragments were maintained in active regeneration without reaching sexual maturity under conditions of $15^{\circ}C$, $20{\mu}mol\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D), whereas the conditions for male gametophytes were slightly different at $15^{\circ}C$, $5{\mu}mol\;m^{-2}\;s^{-1}$, 14 : 10 h (L : D). The sexual maturation of female and male gametophytes took place under $5^{\circ}C$, $20{\sim}40{\mu}mol\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D) and $15^{\circ}C$, $40{\mu}mol\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D), respectively. These results provide basic information for controlling the regenerationand maturation of free-living gametophytes for strain improvement and cross breeding of S. japonica.

본 연구는 다시마 유리배우체의 분리, 재생 및 성숙 유도 조건을 구명하기 위하여, 4개의 온도 조건 (5, 10, 15, $20^{\circ}C$), 4개의 조도조건 (5, 10, 20, $40{\mu}mol\;m^{-2}\;s^{-1}$) 및 3개의 광주기 조건 (14 : 10, 12 : 12, 10 : 14 h L : D)에서 배양을 실시하였다. 다시마 암배우체의 생장은 $15^{\circ}C$, $20{\mu}mol\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D)에서 촉진되었으며, 수배우체의 생장은 $15^{\circ}C$, $5{\mu}mol\;m^{-2}\;s^{-1}$, 14 : 10 h (L : D)에서 촉진되었다. 암배우체의 성 성숙은 $5^{\circ}C$, $20{\sim}40{\mu}mol\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D)에서 촉진되었으며, 수배우체의 성 성숙은 $15^{\circ}C$, $40{\mu}mol\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D)에서 촉진되었다. 이러한 다시마 암수유리배우체의 재생 및 성숙 유도 조건은 다시마의 품종개발과 교잡육종을 위한 유리배우체 배양에 가장 기본적인 자료로 활용될 것이다.

Keywords

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