scholarly journals Class I KNOX transcription factors promote differentiation of cambial derivatives into xylem fibers in the Arabidopsis hypocotyl

Development ◽  
2014 ◽  
Vol 141 (22) ◽  
pp. 4311-4319 ◽  
Author(s):  
D. Liebsch ◽  
W. Sunaryo ◽  
M. Holmlund ◽  
M. Norberg ◽  
J. Zhang ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Class I ◽  
Xylem Fibers

The homeodomain-leucine zipper (HD-Zip) class I transcription factors ATHB7 and ATHB12 modulate abscisic acid signalling by regulating protein phosphatase 2C and abscisic acid receptor gene activities

2012 ◽  
Vol 80 (4-5) ◽  
pp. 405-418 ◽  
Author(s):  
Ana Elisa Valdés ◽  
Elin Övernäs ◽  
Henrik Johansson ◽  
Alvaro Rada-Iglesias ◽  
Peter Engström
Keyword(s):  
Transcription Factors ◽  
Abscisic Acid ◽  
Protein Phosphatase ◽  
Leucine Zipper ◽  
Receptor Gene ◽  
Class I ◽  
Acid Receptor ◽  
Protein Phosphatase 2C

scholarly journals Class I TCP transcription factors regulate trichome branching and cuticle development in Arabidopsis

2020 ◽  
Vol 71 (18) ◽  
pp. 5438-5453
Author(s):  
Alejandra Camoirano ◽  
Agustín L Arce ◽  
Federico D Ariel ◽  
Antonela L Alem ◽  
Daniel H Gonzalez ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Transcription Factors ◽  
Regulatory Network ◽  
Class I ◽  
Branch Number ◽  
Plant Organ ◽  
Cuticle Formation ◽  
Cuticle Development ◽  
Different Levels

Abstract Trichomes and the cuticle are two specialized structures of the aerial epidermis that are important for plant organ development and interaction with the environment. In this study, we report that Arabidopsis thaliana plants affected in the function of the class I TEOSINTE BRANCHED 1, CYCLOIDEA, PCF (TCP) transcription factors TCP14 and TCP15 show overbranched trichomes in leaves and stems and increased cuticle permeability. We found that TCP15 regulates the expression of MYB106, a MIXTA-like transcription factor involved in epidermal cell and cuticle development, and overexpression of MYB106 in a tcp14 tcp15 mutant reduces trichome branch number. TCP14 and TCP15 are also required for the expression of the cuticle biosynthesis genes CYP86A4, GPAT6, and CUS2, and of SHN1 and SHN2, two AP2/EREBP transcription factors required for cutin and wax biosynthesis. SHN1 and CUS2 are also targets of TCP15, indicating that class I TCPs influence cuticle formation acting at different levels, through the regulation of MIXTA-like and SHN transcription factors and of cuticle biosynthesis genes. Our study indicates that class I TCPs are coordinators of the regulatory network involved in trichome and cuticle development.

scholarly journals Class-I TCP Transcription Factors Activate the SAUR63 Gene Subfamily in Gibberellin-Dependent Stamen Filament Elongation

2020 ◽  
Vol 182 (4) ◽  
pp. 2096-2110 ◽  
Author(s):  
Victoria Gastaldi ◽  
Leandro E. Lucero ◽  
Lucía V. Ferrero ◽  
Federico D. Ariel ◽  
Daniel H. Gonzalez
Keyword(s):  
Transcription Factors ◽  
Class I ◽  
Stamen Filament ◽  
Gene Subfamily

scholarly journals The in vivo impact of MsLAC1, a Miscanthus laccase isoform, on lignification and lignin composition contrasts with its in vitro substrate preference

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Feng He ◽  
Katja Machemer-Noonan ◽  
Philippe Golfier ◽  
Faride Unda ◽  
Johanna Dechert ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factors ◽  
Lignin Content ◽  
Lignin Biosynthesis ◽  
Lignin Composition ◽  
Xylem Fibers ◽  
Breeding Target

Abstract Background Understanding lignin biosynthesis and composition is of central importance for sustainable bioenergy and biomaterials production. Species of the genus Miscanthus have emerged as promising bioenergy crop due to their rapid growth and modest nutrient requirements. However, lignin polymerization in Miscanthus is poorly understood. It was previously shown that plant laccases are phenol oxidases that have multiple functions in plant, one of which is the polymerization of monolignols. Herein, we link a newly discovered Miscanthus laccase, MsLAC1, to cell wall lignification. Characterization of recombinant MsLAC1 and Arabidopsis transgenic plants expressing MsLAC1 were carried out to understand the function of MsLAC1 both in vitro and in vivo. Results Using a comprehensive suite of molecular, biochemical and histochemical analyses, we show that MsLAC1 localizes to cell walls and identify Miscanthus transcription factors capable of regulating MsLAC1 expression. In addition, MsLAC1 complements the Arabidopsis lac4–2 lac17 mutant and recombinant MsLAC1 is able to oxidize monolignol in vitro. Transgenic Arabidopsis plants over-expressing MsLAC1 show higher G-lignin content, although recombinant MsLAC1 seemed to prefer sinapyl alcohol as substrate. Conclusions In summary, our results suggest that MsLAC1 is regulated by secondary cell wall MYB transcription factors and is involved in lignification of xylem fibers. This report identifies MsLAC1 as a promising breeding target in Miscanthus for biofuel and biomaterial applications.

MYB class transcription factors bind to the tuber-specific and sucrose-response element of a class-I patatin promoter

2017 ◽  
Vol 11 (4) ◽  
pp. 239-245 ◽  
Author(s):  
Hyung-in Choi ◽  
Sun-Young Baek ◽  
Soo Young Kim
Keyword(s):  
Transcription Factors ◽  
Class I ◽  
Response Element ◽  
Patatin Promoter ◽  
Class I Patatin

Abstract 239: Selective Class I and II Histone Deacetylation Inhibitors Alter Stability of HDAC-Corepressor Complexes

2014 ◽  
Vol 115 (suppl_1) ◽  
Author(s):  
Hsiao C Wang ◽  
Lillianne G Harris ◽  
James C Chou ◽  
Santhosh Mani ◽  
Donald Menick
Keyword(s):  
Heart Failure ◽  
Transcription Factor ◽  
Transcription Factors ◽  
Cardiac Hypertrophy ◽  
Critical Role ◽  
Hdac Inhibitors ◽  
Class I ◽  
Proximal Promoter ◽  
Repressor Complex ◽  
The Stability

Introduction: Alterations in expression and activity of different genes have been implicated in the pathogenesis of heart failure. Our lab has shown that HDAC-repressor complexes play a critical role in the upregulation Sodium Calcium Exchanger ( Ncx1) and HDAC inhibition causes changes that attenuated cardiac remodeling during cardiac hypertrophy and heart failure. Thus, treatment with HDAC inhibitors has been proposed as a potential strategy for treatment of cardiac hypertrophy and heart failure. HDAC inhibitors repress deacetylase activity but we propose that they also affect HDAC confirmation and interaction with other protein factors. We hypothesize that HDAC inhibitors affect the stability of the co-repressor complex with specific transcription factors and that this effect is dependent on the transcription factor. Results: Inhibition of HDACs in adult cardiomyocytes results in the greater stabilization of HDACs with co-repressor molecules that were recruited to the NCX1 promoter through Nkx2.5 transcription factor. HDAC class I specific inhibitor, MS 275 demonstrated stronger association between HDACs and co-repressors while other Class I inhibitors, PD106 and BML 210 failed on showing this phenomenal. The results suggested that class I HDACs inhibitors may affect formations of HDAC-complex via alternated active site interactions other than chelating with zinc binding domain. These results compliment ChIP experiments which also demonstrate the different recruitments of Sin3a at the proximal promoter of NCX1. In vivo analysis on HDAC5 knockout mice reveal that the Sin3a-HDAC1/2 repressor complex is not recruited to the Ncx1 promoter in the absence of HDAC5, indicating not only Class I HDAC but also Class II HDACs play an important role on HDAC-complex formation. Conclusions: This work gives insight into part of the molecular mechanism of how HDAC inhibitors can affect the stability of the HDAC co-repressor complex in cardiac hypertrophy and heart failure. In addition, we demonstrated the Class IIa HDACs are required for the recruitment of the Sin3a/HDAC1/2 co-repressor complex to specific transcription factors on the target promoter.

KNAT 2/6b , a class I KNOX gene, impedes xylem differentiation by regulating NAC domain transcription factors in poplar

2019 ◽  
Vol 225 (4) ◽  
pp. 1531-1544 ◽  
Author(s):  
Yanqiu Zhao ◽  
Xueqin Song ◽  
Houjun Zhou ◽  
Kaili Wei ◽  
Cheng Jiang ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Class I ◽  
Xylem Differentiation ◽  
Knox Gene ◽  
Nac Domain

scholarly journals Modulation of plant growth by HD-Zip class I and II transcription factors in response to environmental stimuli

2011 ◽  
Vol 190 (4) ◽  
pp. 823-837 ◽  
Author(s):  
John C. Harris ◽  
Maria Hrmova ◽  
Sergiy Lopato ◽  
Peter Langridge
Keyword(s):  
Transcription Factors ◽  
Plant Growth ◽  
Class I ◽  
Environmental Stimuli
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