scholarly journals A Regulatory Cascade Involving Class II ETHYLENE RESPONSE FACTOR Transcriptional Repressors Operates in the Progression of Leaf Senescence

2013 ◽  
Vol 162 (2) ◽  
pp. 991-1005 ◽  
Author(s):  
Tomotsugu Koyama ◽  
Haruka Nii ◽  
Nobutaka Mitsuda ◽  
Masaru Ohta ◽  
Sakihito Kitajima ◽  
...  
2019 ◽  
Vol 116 (8) ◽  
pp. 3300-3309 ◽  
Author(s):  
Chih-Cheng Lin ◽  
Ya-Ting Chao ◽  
Wan-Chieh Chen ◽  
Hsiu-Yin Ho ◽  
Mei-Yi Chou ◽  
...  

The rice SUB1A-1 gene, which encodes a group VII ethylene response factor (ERFVII), plays a pivotal role in rice survival under flooding stress, as well as other abiotic stresses. In Arabidopsis, five ERFVII factors play roles in regulating hypoxic responses. A characteristic feature of Arabidopsis ERFVIIs is a destabilizing N terminus, which functions as an N-degron that targets them for degradation via the oxygen-dependent N-end rule pathway of proteolysis, but permits their stabilization during hypoxia for hypoxia-responsive signaling. Despite having the canonical N-degron sequence, SUB1A-1 is not under N-end rule regulation, suggesting a distinct hypoxia signaling pathway in rice during submergence. Herein we show that two other rice ERFVIIs gene, ERF66 and ERF67, are directly transcriptionally up-regulated by SUB1A-1 under submergence. In contrast to SUB1A-1, ERF66 and ERF67 are substrates of the N-end rule pathway that are stabilized under hypoxia and may be responsible for triggering a stronger transcriptional response to promote submergence survival. In support of this, overexpression of ERF66 or ERF67 leads to activation of anaerobic survival genes and enhanced submergence tolerance. Furthermore, by using structural and protein-interaction analyses, we show that the C terminus of SUB1A-1 prevents its degradation via the N-end rule and directly interacts with the SUB1A-1 N terminus, which may explain the enhanced stability of SUB1A-1 despite bearing an N-degron sequence. In summary, our results suggest that SUB1A-1, ERF66, and ERF67 form a regulatory cascade involving transcriptional and N-end rule control, which allows rice to distinguish flooding from other SUB1A-1–regulated stresses.


2020 ◽  
Vol 11 ◽  
Author(s):  
Chaemyeong Lim ◽  
Kiyoon Kang ◽  
Yejin Shim ◽  
Yasuhito Sakuraba ◽  
Gynheung An ◽  
...  

2017 ◽  
Vol 134 ◽  
pp. 33-44 ◽  
Author(s):  
Rambod Abiri ◽  
Noor Azmi Shaharuddin ◽  
Mahmood Maziah ◽  
Zetty Norhana Balia Yusof ◽  
Narges Atabaki ◽  
...  

Plants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1033
Author(s):  
Chunying Wang ◽  
Tingting Lin ◽  
Mengqi Wang ◽  
Xiaoting Qi

Ethylene-responsive elements (EREs), such as the GCC box, are critical for ethylene-regulated transcription in plants. Our previous work identified a 19-bp AC-rich element (ACE) in the promoter of bean (Phaseolus vulgaris) metal response element-binding transcription factor 1 (PvMTF-1). Ethylene response factor 15 (PvERF15) directly binds ACE to enhance PvMTF-1 expression. As a novel ERF-binding element, ACE exhibits a significant difference from the GCC box. Here, we demonstrated that ACE serves as an ERE in Arabidopsis. It conferred the minimal promoter to respond to the ethylene stress and inhibition of ethylene. Moreover, the cis-acting element ACE could specifically bind the nuclear proteins in vitro. We further revealed that the first 9-bp sequence of ACE (ACEcore) is importantly required by the binding of nuclear proteins. In addition, PvERF15 and PvMTF-1 were strongly induced by ethylene in bean seedlings. Since PvERF15 activates PvMTF-1 via ACE, ACE is involved in ethylene-induced PvMTF-1 expression. Taken together, our findings provide genetic and biochemical evidence for a new ERE.


2015 ◽  
Vol 102 ◽  
pp. 9-16 ◽  
Author(s):  
Joseana Severo ◽  
Aline Tiecher ◽  
Jullien Pirrello ◽  
Farid Regad ◽  
Alain Latché ◽  
...  

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