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NTIS 바로가기Ocean and polar research, v.32 no.4, 2010년, pp.397 - 409
하선용 (한양대학교 과학기술대학 해양환경과학과) , 강성원 (부경대학교 환경.해양대학 해양학과) , 박미옥 (부경대학교 환경.해양대학 해양학과) , 김영남 (한국해양연구원 부설 극지연구소) , 강성호 (한국해양연구원 부설 극지연구소) , 신경훈 (한양대학교 과학기술대학 해양환경과학과)
Herein, we compared the production rate of UV-absorbing compounds (mycosporine-like amino acids) and carotenoids in two phytoplankton species--Phaeocystis pouchetii and Porosira glacialis--which are the dominant species in Polar Regions under artificial UV radiation conditions. P. pouchetii exposed ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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자외선은 생물에 있어서 어떤 악영향을 미치는가? | 1992). 자외선은 광합성 및 일차생산력을 억제시키며(Helbling et al. 1992; Häder et al. 2007), 세포 내 단백질 합성 뿐만 아니라 DNA에도 악영향을 주고(Karentz et al. 1991; Boelen et al. 2000), 영양염 흡수에도 악영향을 미치고 있다 (Behrenfeld et al. 1995). 또한 자외선은 여러 종류의 cellular enzymes의 생화학적 과정에 악영향을 미치기도 한다(Dohler et al. 1991; Shinha and Häder 2002). | |
식물플랑크톤이 자외선에 대해 대응하는 방식에는 어떤 것들이 있는가? | 1991; Shinha and Häder 2002). 그러나 세포의 신진대사나 생존에 영향을 미치는 자외선의 효과는 식물플랑크톤의 종마다 크게 다르며(Vernet and Whitehead 1996), 이러한 차이는 식물플랑크톤이 자외선에 광적응하거나 손상된 DNA를 회복(repair)하는 기작을 통하여 자외선의 악영향을 최소화하거나(Karentz et al. 1991), 유해한 자외선을 차단하는 세포 내 자외선 흡수 물질이나 광보호 색소 등을 분비하여 보호한다(Sinha and Häder 2008). | |
mycosporine-like amino acids는 무엇으로 구성된 물질인가? | 2007) 등 여러 수중생물에 폭넓게 분포하고 있다. MAAs는 분자량이 400 Da 이하의 작은 수용성 물질이며 질소나 아미노 알코올 치환기를 가진 aminocyclohexenon이나 aminocycloheximine ring으로 구성된 물질이다(Karentz 2001). 또한 MAAs은 최대흡광도 310~360 nm 사이에서 측정되며, 중파자외선(UV-B)으로 부터 보호하는 역할을 하고 있다(Karentz 2001; Whitehead et al. |
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