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Adaptation of Divinyl Chlorophyll a/b-Containing Cyanobacterium to Different Light Conditions: Three Strains of Prochlorococcus marinus
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2017-09-26 00:00:00 , DOI: 10.1021/acs.jpcb.7b04835 Fumiya Hamada 1 , Akio Murakami 1, 2 , Seiji Akimoto 1
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2017-09-26 00:00:00 , DOI: 10.1021/acs.jpcb.7b04835 Fumiya Hamada 1 , Akio Murakami 1, 2 , Seiji Akimoto 1
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The light-harvesting mechanisms in the three strains of Prochlorococcus marinus, CCMP1986, CCMP1375, and CCMP2773, grown under blue and red light-emitting diodes (LEDs) at two intensity levels were investigated. The blue LED was divinyl chlorophyll b (DV-Chl b) selective and the red LED was DV-Chl a selective. Under the red LED, the relative amount of DV-Chl b in CCMP1375 and CCMP2773 decreased and the relative amount of zeaxanthin increased in CCMP1375. Furthermore, the pigment composition of cells of CCMP1375 grown under red LED was remodified when they were transplanted under the blue LED. Picosecond-time-resolved fluorescence of the LED-grown Prochlorococcus was measured, and the excitation-energy-transfer efficiency between DV-Chl a did not significantly change for the different LED colors or intensities; however, a change in the pigment composition of the DV-Chl b-rich strains (CCMP1375 and CCMP2773) was observed. It appears that peripheral antenna responds to light conditions, with small modifications in the photosystems.
中文翻译：
适应二乙烯叶绿素a / b的蓝藻对不同光照条件的适应：三种菌株的原球藻。
研究了在蓝光和红光发光二极管（LED）下以两种强度水平生长的三种海藻Prochlorococcus marinus，CCMP1986，CCMP1375和CCMP2773的光聚集机理。蓝色LED具有二乙烯基叶绿素b（DV-Chl b）选择性，红色LED具有DV-Chl a选择性。在红色LED下，CCMP1375和CCMP2773中DV-Chl b的相对量减少，而CCMP1375中玉米黄质的相对量增加。此外，当在红色LED下生长的CCMP1375细胞的色素成分在移植到蓝色LED下时被重新修饰。LED生长的原球菌的皮秒分辨荧光经测量，DV-Chl a之间的激发能量转移效率对于不同的LED颜色或强度没有显着变化；然而，在DV-CH1的颜料组合物的改变b观察到富株（CCMP1375和CCMP2773）。似乎外围天线对光条件做出了响应，对光系统进行了很小的修改。
更新日期：2017-09-26
中文翻译：
适应二乙烯叶绿素a / b的蓝藻对不同光照条件的适应：三种菌株的原球藻。
研究了在蓝光和红光发光二极管（LED）下以两种强度水平生长的三种海藻Prochlorococcus marinus，CCMP1986，CCMP1375和CCMP2773的光聚集机理。蓝色LED具有二乙烯基叶绿素b（DV-Chl b）选择性，红色LED具有DV-Chl a选择性。在红色LED下，CCMP1375和CCMP2773中DV-Chl b的相对量减少，而CCMP1375中玉米黄质的相对量增加。此外，当在红色LED下生长的CCMP1375细胞的色素成分在移植到蓝色LED下时被重新修饰。LED生长的原球菌的皮秒分辨荧光经测量，DV-Chl a之间的激发能量转移效率对于不同的LED颜色或强度没有显着变化；然而，在DV-CH1的颜料组合物的改变b观察到富株（CCMP1375和CCMP2773）。似乎外围天线对光条件做出了响应，对光系统进行了很小的修改。
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