Cellular Stress Following Water Deprivation in the Model Legume Lotus japonicus.
Cellular Stress Following Water Deprivation in the Model Legume Lotus japonicus.
复制标题
DOI：
10.3390/cells1041089
复制
发表时间：
2012-11-13
期刊：
影响因子：
6
通讯作者：
Marquez, Antonio J
中科院分区：
文献类型：
--
作者：
Betti, Marco;Perez-Delgado, Carmen;Marquez, Antonio J
在世界范围内，干旱胁迫是限制植物生产力的重要因素之一。为了应对缺水，植物采取了几种策略，这些策略会导致基因表达发生重大变化。本文采用转录组学方法研究了模式豆科植物荷花对干旱胁迫的响应。干旱诱导了与细胞代谢各方面相关的转录组的广泛重编程，包括参与光合作用、氨基酸代谢和细胞壁代谢等的基因。特别关注的是参与细胞应激反应的基因。参与控制细胞周期、抗氧化防御和应激信号传导的关键基因被调节为缺水的结果。属于不同转录因子家族的基因也对应激反应高度敏感。其中一些与模式植物拟南芥（Arabidopsis thaliana）已知的胁迫应答基因同源，而一些新的转录因子是L. japonicus干旱胁迫应答所特有的。
Drought stress is one of the most important factors in the limitation of plant productivity worldwide. In order to cope with water deprivation, plants have adopted several strategies that produce major changes in gene expression. In this paper, the response to drought stress in the model legume Lotus japonicus was studied using a transcriptomic approach. Drought induced an extensive reprogramming of the transcriptome as related to various aspects of cellular metabolism, including genes involved in photosynthesis, amino acid metabolism and cell wall metabolism, among others. A particular focus was made on the genes involved in the cellular stress response. Key genes involved in the control of the cell cycle, antioxidant defense and stress signaling, were modulated as a consequence of water deprivation. Genes belonging to different families of transcription factors were also highly responsive to stress. Several of them were homologies to known stress-responsive genes from the model plant Arabidopsis thaliana, while some novel transcription factors were peculiar to the L. japonicus drought stress response.