scholarly journals The role of ZIP transporters and group F bZIP transcription factors in the Zn-deficiency response of wheat (Triticum aestivum )

2017 ◽  
Vol 92 (2) ◽  
pp. 291-304 ◽  
Author(s):  
Nicholas P. Evens ◽  
Peter Buchner ◽  
Lorraine E. Williams ◽  
Malcolm J. Hawkesford
Keyword(s):  
Triticum Aestivum ◽  
Transcription Factors ◽  
Zn Deficiency ◽  
Bzip Transcription Factors ◽  
Zip Transporters

The role of phosphorylatable serine residues in the DNA-binding domain of Arabidopsis bZIP transcription factors

2010 ◽  
Vol 89 (2-3) ◽  
pp. 175-183 ◽  
Author(s):  
Tobias Kirchler ◽  
Sebastian Briesemeister ◽  
Miriam Singer ◽  
Katia Schütze ◽  
Melanie Keinath ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Dna Binding ◽  
Binding Domain ◽  
Dna Binding Domain ◽  
Bzip Transcription Factors

scholarly journals The Basic Leucine Zipper Transcription Factor PlBZP32 Associated with the Oxidative Stress Response Is Critical for Pathogenicity of the Lychee Downy Blight Oomycete Peronophythora litchii

mSphere ◽  
2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Guanghui Kong ◽  
Yubin Chen ◽  
Yizhen Deng ◽  
Dinan Feng ◽  
Liqun Jiang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Transcription Factors ◽  
Leucine Zipper ◽  
Germination Rate ◽  
Hyphal Growth ◽  
Basic Leucine Zipper ◽  
Content Type ◽  
Bzip Transcription Factors ◽  
Rnai Technique

ABSTRACT Basic leucine zipper (bZIP) transcription factors are widespread in eukaryotes, including plants, animals, fungi, and oomycetes. However, the functions of bZIPs in oomycetes are rarely known. In this study, we identified a bZIP protein possessing a special bZIP-PAS structure in Peronophythora litchii, named PlBZP32. We found that PlBZP32 is upregulated in zoospores, in cysts, and during invasive hyphal growth. We studied the functions of PlBZP32 using the RNAi technique to suppress the expression of this gene. PlBZP32-silenced mutants were more sensitive to oxidative stress, showed a lower cyst germination rate, and produced more sporangia than the wild-type strain SHS3. The PlBZP32-silenced mutants were also less invasive on the host plant. Furthermore, we analyzed the activities of extracellular peroxidases and laccases and found that silencing PlBZP32 decreased the activities of P. litchii peroxidase and laccase. To our knowledge, this is the first report that the functions of a bZIP-PAS protein are associated with oxidative stress, asexual development, and pathogenicity in oomycetes. IMPORTANCE In this study, we utilized the RNAi technique to investigate the functions of PlBZP32, which possesses a basic leucine zipper (bZIP)-PAS structure, and provided insights into the contributions of bZIP transcription factors to oxidative stress, the production of sporangia, the germination of cysts, and the pathogenicity of Peronophythora litchii. This study also revealed the role of PlBZP32 in regulating the enzymatic activities of extracellular peroxidases and laccases in the plant-pathogenic oomycete.

scholarly journals Rice F-bZIP transcription factors regulate the zinc deficiency response

2020 ◽  
Vol 71 (12) ◽  
pp. 3664-3677 ◽  
Author(s):  
Grmay H Lilay ◽  
Pedro Humberto Castro ◽  
Joana G Guedes ◽  
Diego M Almeida ◽  
Ana Campilho ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Transcription Factors ◽  
Zinc Deficiency ◽  
Regulatory Mechanism ◽  
Ectopic Expression ◽  
Zn Deficiency ◽  
Bzip Transcription Factors ◽  
Functional Homolog ◽  
Group 2 ◽  
Group 1

Abstract The F-bZIP transcription factors bZIP19 and bZIP23 are the central regulators of the zinc deficiency response in Arabidopsis, and phylogenetic analysis of F-bZIP homologs across land plants indicates that the regulatory mechanism of the zinc deficiency response may be conserved. Here, we identified the rice F-bZIP homologs and investigated their function. OsbZIP48 and OsbZIP50, but not OsbZIP49, complement the zinc deficiency-hypersensitive Arabidopsis bzip19bzip23 double mutant. Ectopic expression of OsbZIP50 in Arabidopsis significantly increases plant zinc accumulation under control zinc supply, suggesting an altered Zn sensing in OsbZIP50. In addition, we performed a phylogenetic analysis of F-bZIP homologs from representative monocot species that supports the branching of plant F-bZIPs into Group 1 and Group 2. Our results suggest that regulation of the zinc deficiency response in rice is conserved, with OsbZIP48 being a functional homolog of AtbZIP19 and AtbZIP23. A better understanding of the mechanisms behind the Zn deficiency response in rice and other important crops will contribute to develop plant-based strategies to address the problems of Zn deficiency in soils, crops, and cereal-based human diets.

scholarly journals The Role of bZIP Transcription Factors in Green Plant Evolution: Adaptive Features Emerging from Four Founder Genes

PLoS ONE ◽  
2008 ◽  
Vol 3 (8) ◽  
pp. e2944 ◽  
Author(s):  
Luiz Gustavo Guedes Corrêa ◽  
Diego Mauricio Riaño-Pachón ◽  
Carlos Guerra Schrago ◽  
Renato Vicentini dos Santos ◽  
Bernd Mueller-Roeber ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Green Plant ◽  
Plant Evolution ◽  
Bzip Transcription Factors

The role of Forkhead Box O 3a (FoxO3a) Transcription Factors in the Pathogenesis of Pulmonary Fibrosis

Pneumologie ◽  
2012 ◽  
Vol 66 (06) ◽  
Author(s):  
HM Al-Tamari ◽  
M Eschenhagen ◽  
A Schmall ◽  
R Savai ◽  
HA Ghofrani ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Pulmonary Fibrosis ◽  
Forkhead Box

Role of myocardin-related transcription factors in myofibroblastic activation of valvular interstitial cells from aortic valves

2013 ◽  
Vol 61 (S 01) ◽  
Author(s):  
W Witt ◽  
P Büttner ◽  
A Jannasch ◽  
K Matschke ◽  
T Waldow
Keyword(s):  
Transcription Factors ◽  
Interstitial Cells ◽  
Valvular Interstitial Cells ◽  
Aortic Valves
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