中文摘要：

在 cyanobacteria 和更高的植物， NdhS 被建议是 NADPH 的一个电子施主绑定子单元脱氢酶(NDH-1 ) 建筑群和它的缺席损害 NDH-1-dependent 在 photosystem 附近的周期的电子运输我(NDH-CET ) 。尽管有在 NdhS 的学习的重要进展在最近的年期间，它在抵抗热应力的功能的角色糟糕被理解。这里，我们的结果表明 NdhS 的缺席在单细胞的 cyanobacterium Synechocystis sp 导致了严肃的热敏感的生长显型。拉紧 PCC 6803。而且，热处理引起的 NDH-CET 的快速、重要的增加完全被废除，并且在热压力条件下面的 photosystem II 的修理极大地被损害什么时候与在 thylakoid 膜的另外的光合的仪器的相比。我们因此断定 NdhS 在抵抗起一个重要作用加热应力，可能由稳定电子输入 cyanobacterial NDH-1 建筑群的模块。

英文摘要：

In cyanobacteria and higher plants, NdhS is suggested to be an electron donor-binding subunit of NADPH dehydrogenase （NDH-1） complexes and its absence impairs NDH-l-dependent cyclic electron trans- port around photosystem I （NDH-CET）. Despite significant advances in the study of NdhS during recent years, its functional role in resisting heat stress is poorly understood. Here, our results revealed that the absence of NdhS resulted in a serious heat-sensitive growth phenotype in the uni- cellular cyanobacterium Synechocystis sp. strain PCC 6803. Furthermore, the rapid and significant increase in NDH-CET caused by heat treatment was completely abolished, and the repair of photosystem II under heat stress conditions was greatly impaired when compared to that of other photosynthetic apparatus in the thylakoid membrane. We therefore conclude that NdhS plays an important role in resistance to heat stress, possibly by stabilizing the electron input module of cyanobacterial NDH-1 complexes.