a State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources , South China Agricultural University , Guangzhou , China.
b Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm , College of Forestry and Landscape Architecture, South China Agricultural University , Guangzhou , China.
Plant Signal Behav. 2017 Jun 3;12(6):e1329073. doi: 10.1080/15592324.2017.1329073. Epub 2017 May 24.
The ethylene response factor VII (ERF-VII) transcription factor has been reported to be involved in multiple different stress responses. In a previous study, we showed that ERF74 and ERF75 play a redundant role in the upregulation of RESPIRATORY BURST OXIDASE HOMOLOG D (RbohD) transcription and enhance the oxygen species (ROS) burst during early stages of the stress response. Induction of stress marker genes and ROS-scavenging enzymes under various stress conditions are dependent on this ROS burst. Here, we propose an assumption that ERF71-ERF75 have different functions and act synergistically in response to stresses in Arabidopsis. ERF74 and ERF75 are involved in controlling an RbohD-dependent mechanism in response to different stresses, subsequently maintaining HO homeostasis in Arabidopsis as we previously reported. ERF71 and ERF73 may have a role in supervising plant intracellular ROS homeostasis, whereas ERF72 may only act as an activator of ERF74 and ERF75 in the stress response.
乙烯响应因子 VII（ERF-VII）转录因子已被报道参与多种不同的应激反应。在之前的一项研究中，我们表明 ERF74 和 ERF75 在 RESPIRATORY BURST OXIDASE HOMOLOG D（RbohD）转录的上调中发挥冗余作用，并在应激反应的早期增强氧物种（ROS）爆发。在各种应激条件下，应激标记基因和 ROS 清除酶的诱导依赖于这种 ROS 爆发。在这里，我们提出一个假设，即 ERF71-ERF75 在拟南芥对胁迫的反应中具有不同的功能，并协同作用。正如我们之前报道的，ERF74 和 ERF75 参与控制对不同胁迫的 RbohD 依赖性机制，随后在拟南芥中维持 HO 内稳态。ERF71 和 ERF73 可能在监督植物细胞内 ROS 内稳态方面发挥作用，而 ERF72 可能仅在应激反应中作为 ERF74 和 ERF75 的激活剂发挥作用。
