scholarly journals A membrane‐associated NAC domain transcription factor XVP interacts with TDIF co‐receptor and regulates vascular meristem activity

2019 ◽  
Vol 226 (1) ◽  
pp. 59-74 ◽  
Author(s):  
Jung Hyun Yang ◽  
Kwang‐Hee Lee ◽  
Qian Du ◽  
Shuo Yang ◽  
Bingjian Yuan ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Nac Domain

scholarly journals Interaction of the Tobacco Mosaic Virus Replicase Protein with a NAC Domain Transcription Factor Is Associated with the Suppression of Systemic Host Defenses

2009 ◽  
Vol 83 (19) ◽  
pp. 9720-9730 ◽  
Author(s):  
Xiao Wang ◽  
Sameer P. Goregaoker ◽  
James N. Culver
Keyword(s):  
Transcription Factor ◽  
Salicylic Acid ◽  
Tobacco Mosaic Virus ◽  
Acid Treatment ◽  
Defense Responses ◽  
Marker Genes ◽  
Host Defenses ◽  
Salicylic Acid Treatment ◽  
Transcript Levels ◽  
Nac Domain

ABSTRACT An interaction between the helicase domain of the Tobacco mosaic virus (TMV) 126-/183-kDa replicase protein(s) and the Arabidopsis thaliana NAC domain transcription factor ATAF2 was identified via yeast two-hybrid and in planta immunoprecipitation assays. ATAF2 is transcriptionally induced in response to TMV infection, and its overexpression significantly reduces virus accumulation. Proteasome inhibition studies suggest that ATAF2 is targeted for degradation during virus infection. The transcriptional activity of known defense-associated marker genes PR1, PR2, and PDF1.2 significantly increase within transgenic plants overexpressing ATAF2. In contrast, these marker genes have reduced transcript levels in ATAF2 knockout or repressor plant lines. Thus, ATAF2 appears to function in the regulation of host basal defense responses. In response to TMV infections, ATAF2 and PR1 display increased transcript accumulations in inoculated tissues but not in systemically infected tissues. ATAF2 and PR1 transcript levels also increase in response to salicylic acid treatment. However, the salicylic acid treatment of systemically infected tissues did not produce a similar increase in either ATAF2 or PR1 transcripts, suggesting that host defense responses are attenuated during systemic virus invasion. Similarly, noninfected ATAF2 knockout or ATAF2 repressor lines display reduced levels of PR1 transcripts when treated with salicylic acid. Taken together, these findings suggest that the replicase-ATAF2 interaction suppresses basal host defenses as a means to promote systemic virus accumulation.

scholarly journals PdWND3A, a wood-associated NAC domain-containing protein, affects lignin biosynthesis and composition in Populus

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Yongil Yang ◽  
Chang Geun Yoo ◽  
William Rottmann ◽  
Kimberly A. Winkeler ◽  
Cassandra M. Collins ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Transgenic Plants ◽  
Secondary Cell Wall ◽  
Lignin Biosynthesis ◽  
Cell Wall Biosynthesis ◽  
Wild Type ◽  
Nac Domain ◽  
Sugar Release ◽  
Secondary Cell Wall Biosynthesis

Abstract Background Plant secondary cell wall is a renewable feedstock for biofuels and biomaterials production. Arabidopsis VASCULAR-RELATED NAC DOMAIN (VND) has been demonstrated to be a key transcription factor regulating secondary cell wall biosynthesis. However, less is known about its role in the woody species. Results Here we report the functional characterization of Populus deltoides WOOD-ASSOCIATED NAC DOMAIN protein 3 (PdWND3A), a sequence homolog of Arabidopsis VND4 and VND5 that are members of transcription factor networks regulating secondary cell wall biosynthesis. PdWND3A was expressed at higher level in the xylem than in other tissues. The stem tissues of transgenic P. deltoides overexpressing PdWND3A (OXPdWND3A) contained more vessel cells than that of wild-type plants. Furthermore, lignin content and lignin monomer syringyl and guaiacyl (S/G) ratio were higher in OXPdWND3A transgenic plants than in wild-type plants. Consistent with these observations, the expression of FERULATE 5-HYDROXYLASE1 (F5H1), encoding an enzyme involved in the biosynthesis of sinapyl alcohol (S unit monolignol), was elevated in OXPdWND3A transgenic plants. Saccharification analysis indicated that the rate of sugar release was reduced in the transgenic plants. In addition, OXPdWND3A transgenic plants produced lower amounts of biomass than wild-type plants. Conclusions PdWND3A affects lignin biosynthesis and composition and negatively impacts sugar release and biomass production.

scholarly journals Reciprocal cross-regulation of VND and SND multigene TF families for wood formation in Populus trichocarpa

2017 ◽  
Vol 114 (45) ◽  
pp. E9722-E9729 ◽  
Author(s):  
Ying-Chung Jimmy Lin ◽  
Hao Chen ◽  
Quanzi Li ◽  
Wei Li ◽  
Jack P. Wang ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Transcription Factors ◽  
Splice Variant ◽  
Reciprocal Cross ◽  
Splice Variants ◽  
Family Members ◽  
Wood Formation ◽  
Negative Regulator ◽  
General Mechanism ◽  
Nac Domain

Secondary cell wall (SCW) biosynthesis is the biological process that generates wood, an important renewable feedstock for materials and energy. NAC domain transcription factors, particularly Vascular-Related NAC-Domain (VND) and Secondary Wall-Associated NAC Domain (SND) proteins, are known to regulate SCW differentiation. The regulation of VND and SND is important to maintain homeostasis for plants to avoid abnormal growth and development. We previously identified a splice variant, PtrSND1-A2IR, derived from PtrSND1-A2 as a dominant-negative regulator, which suppresses the transactivation of all PtrSND1 family members. PtrSND1-A2IR also suppresses the self-activation of the PtrSND1 family members except for its cognate transcription factor, PtrSND1-A2, suggesting the existence of an unknown factor needed to regulate PtrSND1-A2. Here, a splice variant, PtrVND6-C1IR, derived from PtrVND6-C1 was discovered that suppresses the protein functions of all PtrVND6 family members. PtrVND6-C1IR also suppresses the expression of all PtrSND1 members, including PtrSND1-A2, demonstrating that PtrVND6-C1IR is the previously unidentified regulator of PtrSND1-A2. We also found that PtrVND6-C1IR cannot suppress the expression of its cognate transcription factor, PtrVND6-C1. PtrVND6-C1 is suppressed by PtrSND1-A2IR. Both PtrVND6-C1IR and PtrSND1-A2IR cannot suppress their cognate transcription factors but can suppress all members of the other family. The results indicate that the splice variants from the PtrVND6 and PtrSND1 family may exert reciprocal cross-regulation for complete transcriptional regulation of these two families in wood formation. This reciprocal cross-regulation between families suggests a general mechanism among NAC domain proteins and likely other transcription factors, where intron-retained splice variants provide an additional level of regulation.

NAC domain transcription factor ATAF1 interacts with SNF1-related kinases and silencing of its subfamily causes severe developmental defects in Arabidopsis

Plant Science ◽  
2009 ◽  
Vol 177 (4) ◽  
pp. 360-370 ◽  
Author(s):  
Tatjana Kleinow ◽  
Sarah Himbert ◽  
Björn Krenz ◽  
Holger Jeske ◽  
Csaba Koncz
Keyword(s):  
Transcription Factor ◽  
Developmental Defects ◽  
Nac Domain

Comprehensive analysis of NAC domain transcription factor gene family in Vitis vinifera

2012 ◽  
Vol 32 (1) ◽  
pp. 61-75 ◽  
Author(s):  
Nian Wang ◽  
Yu Zheng ◽  
Haiping Xin ◽  
Linchuan Fang ◽  
Shaohua Li
Keyword(s):  
Transcription Factor ◽  
Vitis Vinifera ◽  
Gene Family ◽  
Comprehensive Analysis ◽  
Transcription Factor Gene ◽  
Nac Domain ◽  
Factor Gene ◽  
Transcription Factor Gene Family

Identification and characterization of a wood-associated NAC domain transcription factor PtoVNS11 from Populus tomentosa Carr.

Trees ◽  
2015 ◽  
Vol 29 (4) ◽  
pp. 1091-1101 ◽  
Author(s):  
Li Yang ◽  
Yisu Hou ◽  
Xin Zhao ◽  
Wanxiang Lu ◽  
Yongli Li ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Populus Tomentosa ◽  
Nac Domain ◽  
Populus Tomentosa Carr ◽  
Identification And Characterization
Sign in / Sign up

Export Citation Format

Share Document