CAJ | 학술논문

研究了不同浓度的2,2',4,4'-四溴联苯醚(BDE-47)对2种海洋微藻的光合特性的影响.结果表明,在试验所设定的浓度范围内(0.1～2.5μg/L),海水小球藻和赤潮异弯藻的PSⅡ最大光能转化效率(F_v/F_m)、光化学淬灭系数(qP)未受到显著抑制,表明2种微藻PSⅡ反应中心在试验过程中未受到损伤.当BDE-47浓度为2.5μg/L时,海水小球藻的PSⅡ潜在活性(F_v/F_o)、PSⅡ实际光能转化效率(ψPSⅡ)和光合电子传递效率(ETR)在96h受到显著抑制,而赤潮异湾藻的3个参数在暴露期间均末受到抑制,表明赤潮异湾藻对BDE-47的耐受性强于海水小球藻.各叶绿素荧光参数中,F_v/F_o、ψPSⅡ、ETR更适合作为指示海洋环境中BDE-47污染水平的生物标志物.
연구료불동농도적2,2',4,4'-사추련분미(BDE-47)대2충해양미조적광합특성적영향.결과표명,재시험소설정적농도범위내(0.1～2.5μg/L),해수소구조화적조이만조적PSⅡ최대광능전화효솔(F_v/F_m)、광화학쉬멸계수(qP)미수도현저억제,표명2충미조PSⅡ반응중심재시험과정중미수도손상.당BDE-47농도위2.5μg/L시,해수소구조적PSⅡ잠재활성(F_v/F_o)、PSⅡ실제광능전화효솔(ψPSⅡ)화광합전자전체효솔(ETR)재96h수도현저억제,이적조이만조적3개삼수재폭로기간균말수도억제,표명적조이만조대BDE-47적내수성강우해수소구조.각협록소형광삼수중,F_v/F_o、ψPSⅡ、ETR경괄합작위지시해양배경중BDE-47오염수평적생물표지물.
Effects of 2, 2', 4, 4'-tetrabrominated biphenyl ether (BDE-47) on photosynthetic characteristics of two marine microalgae were comprehensively investigated. The results showed that no significant inhibition of maximal photochemical efficiency of PSⅡ(F_v/F_m), photochemical quenching (qP) of Chlorella sp. and Heterosigam akshiwo were determined at the concentration of 0.1～2.5 μg/L, which meant that BDE-47 didn't cause damage to PSⅡ reaction center of the two algae. At the dose of 2.5 μg/L PSⅡ potential fluorescence efficiency (F_v/F_o), actual photochemical efficiency of PSⅡ(ψPSⅡ) and electron transport rate (ETR) of Chlorella sp.. were inhibited distinctly after exposed to BDE-47 for 96h. And ψPSⅡ, F_v/F_o and ETR of Heterosigam akashiwo, weren't observed inhibition at the BDE-47 concentration of 2.5 μg/L, which revealed that this microalgae was more tolerant than Chlorella sp.. Among all of chlorophyll fluorescence parameters, F_v/F_o, ψPSⅡ and ETR are more suitable to be used as biomarkers for evaluation of pollution level of BDE-47 in marine environment.