scholarly journals A hypermorphic mutation in the protein phosphatase 2C HAB1 strongly affects ABA signaling inArabidopsis

FEBS Letters ◽  
2006 ◽  
Vol 580 (19) ◽  
pp. 4691-4696 ◽  
Author(s):  
Nadia Robert ◽  
Sylvain Merlot ◽  
Vinh N’Guyen ◽  
Aurélien Boisson-Dernier ◽  
Julian I. Schroeder
Keyword(s):  
Protein Phosphatase ◽  
Aba Signaling ◽  
Protein Phosphatase 2C

scholarly journals HONSU, a Protein Phosphatase 2C, Regulates Seed Dormancy by Inhibiting ABA Signaling in Arabidopsis

2013 ◽  
Vol 54 (4) ◽  
pp. 555-572 ◽  
Author(s):  
Woohyun Kim ◽  
Yeon Lee ◽  
Jeongmoo Park ◽  
Nayoung Lee ◽  
Giltsu Choi
Keyword(s):  
Seed Dormancy ◽  
Protein Phosphatase ◽  
Aba Signaling ◽  
Protein Phosphatase 2C

131. Protein phosphatase 2C-regulated ABA signaling processes leading to freezing tolerance in bryophytes

Cryobiology ◽  
2009 ◽  
Vol 59 (3) ◽  
pp. 407
Author(s):  
Salma Begum Bhyan ◽  
Ken Tougane ◽  
Kenji Komatsu ◽  
Yoichi Sakata ◽  
Kimitsune Ishizaki ◽  
...  
Keyword(s):  
Freezing Tolerance ◽  
Protein Phosphatase ◽  
Aba Signaling ◽  
Protein Phosphatase 2C

scholarly journals AITRL, an evolutionarily conserved plant specific transcription repressor regulates ABA response in Arabidopsis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yanxing Ma ◽  
Hainan Tian ◽  
Rao Lin ◽  
Wei Wang ◽  
Na Zhang ◽  
...  
Keyword(s):  
Stress Response ◽  
Protein Phosphatase ◽  
Aba Signaling ◽  
Response Gene ◽  
Stress Response Genes ◽  
Arabidopsis Protein ◽  
Evolutionarily Conserved ◽  
Increased Sensitivity ◽  
Aba Response ◽  
Transcription Repressors

AbstractExpression of stress response genes can be regulated by abscisic acid (ABA) dependent and ABA independent pathways. Osmotic stresses promote ABA accumulation, therefore inducing the expression of stress response genes via ABA signaling. Whereas cold and heat stresses induce the expression of stress response genes via ABA independent pathway. ABA induced transcription repressors (AITRs) are a family of novel transcription factors that play a role in ABA signaling, and Drought response gene (DRG) has previously been shown to play a role in regulating plant response to drought and freezing stresses. We report here the identification of DRG as a novel transcription factor and a regulator of ABA response in Arabidopsis. We found that the expression of DRG was induced by ABA treatment. Homologs searching identified AITR5 as the most closely related Arabidopsis protein to DRG, and homologs of DRG, including the AITR-like (AITRL) proteins in bryophytes and gymnosperms, are specifically presented in embryophytes. Therefore we renamed DRG as AITRL. Protoplast transfection assays show that AITRL functioned as a transcription repressor. In seed germination and seedling greening assays, the aitrl mutants showed an increased sensitivity to ABA. By using qRT-PCR, we show that ABA responses of some ABA signaling component genes including some PYR1-likes (PYLs), PROTEIN PHOSPHATASE 2Cs (PP2Cs) and SUCROSE NONFERMENTING 1 (SNF1)-RELATED PROTEIN KINASES 2s (SnRK2s) were reduced in the aitrl mutants. Taken together, our results suggest that AITRLs are a family of novel transcription repressors evolutionally conserved in embryophytes, and AITRL regulates ABA response in Arabidopsis by affecting ABA response of some ABA signaling component genes.

scholarly journals A novel protein phosphatase 2C family member (PP2Cζ) is able to associate with ubiquitin conjugating enzyme 91

FEBS Letters ◽  
2003 ◽  
Vol 538 (1-3) ◽  
pp. 197-202 ◽  
Author(s):  
Mitsuhiro Kashiwaba ◽  
Koji Katsura ◽  
Motoko Ohnishi ◽  
Mutsuo Sasaki ◽  
Hiromitsu Tanaka ◽  
...  
Keyword(s):  
Family Member ◽  
Protein Phosphatase ◽  
Protein Phosphatase 2C ◽  
Ubiquitin Conjugating Enzyme ◽  
Novel Protein ◽  
Conjugating Enzyme

The protein phosphatase 2C clade A protein OsPP2C51 positively regulates seed germination by directly inactivating OsbZIP10

2016 ◽  
Vol 93 (4-5) ◽  
pp. 389-401 ◽  
Author(s):  
Nikita Bhatnagar ◽  
Myung-Ki Min ◽  
Eun-Hye Choi ◽  
Namhyo Kim ◽  
Seok-Jun Moon ◽  
...  
Keyword(s):  
Seed Germination ◽  
Protein Phosphatase ◽  
Protein Phosphatase 2C

scholarly journals H2O2 Inhibits ABA-Signaling Protein Phosphatase HAB1

PLoS ONE ◽  
2014 ◽  
Vol 9 (12) ◽  
pp. e113643 ◽  
Author(s):  
Madhuri Sridharamurthy ◽  
Amanda Kovach ◽  
Yang Zhao ◽  
Jian-Kang Zhu ◽  
H. Eric Xu ◽  
...  
Keyword(s):  
Protein Phosphatase ◽  
Aba Signaling ◽  
Signaling Protein
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