The excited energy of photosystem II was stronger. 光系统II的激发能量较强;
Photosystem Iunits are about 17.5nm in diameter, and photosystem II units about 11nm. 光系统I的单位直径为17.;5nm，光系统II的单位直径为11nm。
On the other hand, the effective quantum yield of photosystem II(Yield) and the coefficient of photochemical( qP) did not show significant difference. 光合量子产额(Yield)和光化学猝灭系数(qP)未达显著差异。
The aim of this study is to investigate the denaturation, membrane lipids protection and recovery of photosystem II (PSII), and the involvement of chloroplasts in plant apoptosis. 本论文有两个部分：研究光系统II（PSII）蛋白质变性以及膜脂重组的保护和复性，探讨叶绿体与植物细胞凋亡的关系。
The results suggested that photosystem reaction center was partially inactivated or damaged, and photoinhibition occurred under both low and high temperature stress. 季节性低温和高温胁迫下PS反应中心遭到破坏或产生可逆失活，产生光抑制，并可能通过热耗散来减轻光抑制。
CP43 and CP47 are two pigment protein complexes, which constitute the photosystem II (PSII) core antenna, and play an important role in excitation energy transfer. CP43和CP47是构成光合生物内周天线的两个重要的色素蛋白复合物,在生物体内主要起着传递激发能的作用。
