反应中心

PSⅡ反应中心与捕光天线系统之间的能量传递研究

Study on the energy transfer process between the photosystem II reaction center and light-harvesting system

具放氧功能的PSⅡ反应中心复合物的分离及其特性

Further Studies on the Isolation and Characterization of the Oxygen-Evolving PS ⅱ Reaction Center Complex

以纳米TiO2为反应中心核，通过一步法在纳米TiO2表面接枝超支化聚合物。

Nano-TiO2 was grafted with hyperbranched polymer through one-step polycondensation .

PSⅡ颗粒二聚体中类胡萝卜素向反应中心传能研究

Study on Energy Transfer from Carotenoid Moleculars to Reaction Centre in Photosystem ⅱ dimer

Bcl-2基因转染对心脏移植排斥反应中心肌细胞凋亡的影响

Effect of Bcl-2 Gene Transfer on Apoptosis of Myocardial Cells in Mice Heart Transplantation Rejection

药品不良反应中心是保障ADR监测工作的主要机构。

And ADR centre is the principal organ to guarantee the ADR monitoring .

甘蓝叶片的光合午休现象是对中午较高温度和高光强的一种适应，PSⅡ反应中心的可逆失活和依赖叶黄素循环的热耗散在防御光破坏方面起着重要作用。

Midday depression of photosynthesis during bright days was the adaptive mechanisms to high temperature and strong light stress .

这些结果说明PSⅡ反应中心的受损导致了CO2同化的下降。

All these results indicated that the damage of PS ⅱ reaction center resulted in the decline in CO_2 assimilation .

低温荧光发射光谱表明CPI为含有少量光系统II的光系统I反应中心复合体。

Low temperature fluorescence emission spectrum showed that it is photosystem I reaction center complex containing less photosystem II .

细胞色素b559是由叶绿体基因编码α、β亚基为单位构成的一种血红素蛋白，是光系统II反应中心的重要组分。

Cytochrome b_559 , a heme protein composed of α _ and β _subunits encoded by chloroplast genomes , is an integral component of the PSII reaction center .

因此，可根据Fo的变化推测反应中心的状况和可能的光保护机制。

Therefore , the changes can speculate Fo situation and possible reaction center light protection .

经检测发现，在高温处理之后，突变体和野生型植株中其它的PSⅡ反应中心蛋白的水平保持相对稳定。

Furthermore , the levels of other PSII reaction center proteins tested remained relatively stable in the mutant and WT plants following high-temperature treatment .

光系统II（PSII）抑制剂要导致PSII反应中心的电子传递受阻，被认为是重要的除草剂。

Photosystem II ( PS II ) inhibitors are considered to be important herbicides which act by blocking the electron transportation close to PS II reaction center .

采用PEG渗透胁迫的方法，进一步验证了干旱对草莓光合作用、气体交换以及光合反应中心活性的影响。

Osmotic stress was used to testify the effects of soil drought on photosynthesis , gas exchange and activities of PS reaction center .

增施氮肥与CO2浓度有相反效应，通过提高N素营养可以维持ΦPSⅡ反应中心高度开放，缓解了CO2浓度带来的旗叶光合能力的下降。

Nitrogen application and CO2 concentration have the opposite effect . It also maintain chlorophyll fluorescence reaction center highly open , relieve Pn decrease in flag leaf . 3 .

而高光强下，过多的光能造成PS11反应中心的失活，PQ库无法得到电子而处于氧化状态，光合机构由状态2转向状态1。

Over much light irradiance caused PS II reaction center reversible inactivation and PQ pool could not .

光系统Ⅱ（PSⅡ）是绿色植物光合膜上存在的两个光反应中心之一，具有利用太阳光的能量来裂解水、释放分子氧并还原质体醌的功能。

PSII functions as a water / plastoquinone oxidoreductase in the thylakoid membrane of chloroplasts and cyanobacteria , comprising one of the light reaction centers for photosynthesis .

第一部分包括天线和反应中心的结构、放氧机理和ATP合成的分子机理；

The first part covers the structure of antenna and reaction centers , the mechanism of oxygen evolution , and the molecular mechanism of ATP synthesis .

在低温下研究了温度对反应中心RC色素分子传能动力学的影响，并得到低温下电荷分离前激发能的传递途径大致相同的结论，该结论还没有见过文章报导。

Influence of temperature on energy transfer kinetics of the pigment molecules in reaction center was studied at low temperature using the femtosecond time-resolved transient and steady state fluorescence spectrophotometer .

因此我们认为Cd~（2+）除了作用于PSⅡ氧化侧外，还可能直接损伤了PSⅡ反应中心。

It is considered that , besides the oxidizing side of PS ⅱ, Cd ~ ( 2 + ) could also inhibit directly the PS ⅱ reaction cen - ter .

此外，根据光系统Ⅱ反应中心核心复合物只有一条叶绿素蛋白质复合物带（CPa）的实验结果，我们认为光系统Ⅱ反应中心叶绿素蛋白质复合物即在CPa带中。

E. , CPa band in PSII reaction center core complex . So it is considered that PSII reaction center chlorophyll-protein complex must be included in CPa band ;

结果表明，PSⅡ反应中心的实际光化学效率（ФPSⅡ）随叶片水分胁迫的加剧而降低，施氮可明显提高ФPSⅡ。

The results showed that the actual photochemical efficiency of PS ⅱ reaction center (Ф PS ⅱ) was decreased with leaf water stress aggravated , while was increased by nitrogen supply .

目的：通过分析上海市药品不良反应中心收到的药品不良反应（ADR）报告中，头孢菌素类抗生素所致的ADR及其相关因素，了解该类药物ADR发生的情况，以减少ADR的发生。

Objective : To investigate the characteristics of adverse drug reaction ( ADR ) induced by cephalosporins through the analysis of ADR reports from ADR Monitoring Centre of Shanghai .

叶绿素荧光淬灭分析表明，叶绿素缺乏引起了PSⅡ光化学淬灭系数的升高，同时降低了PSⅡ开放反应中心激发压捕获效率和非光化学淬灭系数。

Fluorescence quenching analyses showed that chlorophyll deficiency induced increases the photochemical quenching , but an decrease in the the efficiency of excitation energy capture by open PSII reaction centers , non-photochemical quenching .

说明随着遮荫程度的提高，大豆、绿豆和辣椒光反应中心PSⅡ的光化学效率和潜在活性逐渐上升。

It indicated that , with increasing the degree of shade , the photochemical efficiency and the potential activity of light reaction center ( PS ⅱ) in soybean , mung bean and pepper increased .

由于PEG具有柔韧的长链而不会对链端连接的反应中心的活性产生影响，因此该反应在均相体系中进行，不仅反应条件温和，产率良好，而且反应还具有良好的选择性。

Due to the long and flexible chain of PEG , PEG supported substrates could maintain high reactivity so that the reactions involved could be carried out under mild conditions in good yields .

增施肥料可一定程度上减缓Fo、Fv、Fv/Fm的降低，这也是施肥可以减缓水分胁迫对PSⅡ反应中心的破坏。

To some extent , Fo , Fv , Fv / Fm fell by applying fertilizer because it could slow up PS II reaction center 's damage from water stress .

对叶绿素荧光数据进行分析，发现缺铁使PSII反应中心活性，PSII的最大光化学效率和实际光化学效率都显著降低。

By analyzing chlorophyll fluorescence parameters , we found that iron deficiency decreased activities of PSII centers , the maximum photochemical efficiency and actual photochemical efficiency .

4反应中心中与蛋白质存在不同结合的chla分子，以及核心天线中吸收不同波段光的chla分子与蛋白质结合方式随温度变化存在不同反应。

Chla in RC and chla absorbing different wavelength in core antenna complex connected with proteins at different positions have different responses with changing temperature .

结果表明，CO2浓度倍增能提高拔节期成熟叶片和灌浆期成熟旗叶的Chl和Car的含量，并且能提高这两种叶片PSⅡ反应中心开放部分的比例。

The experimental results showed that the contents of chlorophyll and carotenoid , the proportion of opened PS II reaction center from the mature leaves at jointing stage and the mature flag leaves at grouting stage were raised with CO2 enrichment .