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首页> 外文期刊>Chinese science bulletin >Relationship between state transition and photoinhibition of photosynthesis in wheat leaves
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Relationship between state transition and photoinhibition of photosynthesis in wheat leaves

机译：小麦叶片状态转变与光合作用光抑制的关系

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IT is well known that state transitions can keep even distribution of excitation energy between the two photosystems (PS II and PS O ), favoring efficient operation of the photosynthetic apparatus. However, state transitions are usually thought to beassociated with low light conditions. Its physiological significance under high light conditions is still a controversial issue, Many people think that state transitions occur and take significant effect only under low light , though some people still get data in support of the suggestion that state transition plays an important role in nonphotochemical dissipation of light energy even at strong light . When considering the protecting mechanisms whereby the photosynthetic apparatus is prevented from photodamage, it is usually suggested that transition to state 2 may redirect part of light energy absorbed by PS II to PS I , thereby alleviating the pressure of excess light energy on PS II, but there is no direct experiment evidence to demonstrate it.
机译：众所周知，状态转换可以使激发能在两个光系统（PS II和PS O）之间保持均匀分布，从而有利于光合装置的高效运行。然而，通常认为状态转换与弱光条件有关。在强光条件下其生理意义仍然是一个有争议的问题，许多人认为状态转换仅在弱光条件下才会发生并发挥重要作用，尽管仍有一些人得到数据支持，表明状态转换在非光化学耗散中起重要作用。即使在强光下也能产生足够的光能。在考虑防止光合作用装置受到光损害的保护机制时，通常建议过渡到状态2可以将PS II吸收的部分光能重定向到PS I，从而减轻PS II上多余光能的压力，但是没有直接的实验证据可以证明这一点。

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