中文摘要：

ATP 依赖的丝氨酸朊酶 Lon 属于 AAA+ 总科，它在细菌， archaea，和真核细胞的房间是广泛地分布式的。Lon 经由降级参予众多的生理的过程和基因表示的规定各种各样不稳定并且外国人管理者。在这研究，我们证明 Arabidopsis atlon4 异种比野类型的植物对干旱应力更敏感。与野类型的植物相比， atlon4 异种植物处于干旱压力条件显示出增加的水损失，减少的水使用效率，和损害有气孔的闭合。

英文摘要：

The ATP-dependent serine protease Lon belongs to the AAA~ superfamily, which is widely distributed in bacteria, archaea, and eukaryotic cells, Lon participates in the regulation of numerous physiological processes and gene expression via degrading vari- ous unstable and non-native regulators. In this study, we showed that the Arabidopsis atlon4 mutant is more sensitive to drought stress than wild-type plants. Compared with wild-type plants, atlon4 mutant plants showed increased water loss, decreased water use efficiency, and impaired stomatal closure in drought stress conditions.