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실내배양에서 납작돌잎(Lithophyllum yessoense)과 진분홍딱지(Hildenbrandia rubra)의 배아 생장에 미치는 환경요인의 영향

The Effects of Environmental Factors on the Growth of Lithophyllum yessoense and Hildenbrandia rubra Sporelings in Laboratory Culture

  • 송지나 (원광대학교 생명과학부/기초자연과학연구소) ;
  • 박서경 (원광대학교 생명과학부/기초자연과학연구소) ;
  • 오지철 (원광대학교 생명과학부/기초자연과학연구소) ;
  • 유현일 (원광대학교 생명과학부/기초자연과학연구소) ;
  • 최한길 (원광대학교 생명과학부/기초자연과학연구소) ;
  • 김영식 (군산대학교 해양생물공학과) ;
  • 남기완 (부경대학교 자원생물학과)
  • Song, Ji Na (Faculty of Biological Science and Institute for Basic Science, Wonkwang University) ;
  • Park, Seo Kyoung (Faculty of Biological Science and Institute for Basic Science, Wonkwang University) ;
  • Oh, Ji Chul (Faculty of Biological Science and Institute for Basic Science, Wonkwang University) ;
  • Yoo, Hyun Il (Faculty of Biological Science and Institute for Basic Science, Wonkwang University) ;
  • Kim, Young Sik (Faculty of Biological Science and Institute for Basic Science, Wonkwang University) ;
  • Choi, Han Gil (Department of Marine Biotechnology, Kunsan National University) ;
  • Nam, Ki Wan (Department of Marine Biology, Pukyong National University)
  • 투고 : 2013.08.12
  • 심사 : 2013.11.28
  • 발행 : 2013.12.31

초록

The effects of environmental factors, such as irradiance, daylength, salinity, and desiccation, on the growth of Lithophyllum yessoense and Hildenbrandia rubra sporelings were examined. Sporelings of each species were cultured with 10, 50, 80, 120, $150{\mu}mol$ photon $m^{-2}s^{-1}$ for 14 days and their maximum growth occurred under $80{\mu}mol$ photon $m^{-2}s^{-1}$. Germlings of both species survived for 21 days in darkness, and even the L.yessoense germlings grew. In the salinity experiment, sporelings of each species survived for 7 days and died after 14 days under 20 and 25 psu, but the sporelings grew well under 34 psu. Physiological features of each species with respect to the evaluated daylengths (8, 12, 14 and 16 h) were slightly different, and maximal growth occurred at 16 h for L. yessoense and at 14 h for H. rubra sporelings. Mortality of the sporelings increased with the exposure period, but H. rubra was less tolerant to desiccation than L. yessoense. In conclusion, sporelings of the two species showed similar growth responses to various environmental factors with slightly different physiological features with respect to salinity, daylength, and desiccation. However, more ecological and physiological studies on slow-growing crustose algae are required to elucidate the expansion of barren ground around the coastal areas of Korea.

키워드

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