A NAC‐type transcription factor confers aluminium resistance by regulating cell wall‐associated receptor kinase 1 and cell wall pectin

2019 ◽  
Vol 43 (2) ◽  
pp. 463-478 ◽  
Author(s):  
He Qiang Lou ◽  
Wei Fan ◽  
Jian Feng Jin ◽  
Jia Meng Xu ◽  
Wei Wei Chen ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Receptor Kinase ◽  
Aluminium Resistance

scholarly journals An R2R3-type myeloblastosis transcription factor MYB103 is involved in phosphorus remobilization

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Fangwei Yu ◽  
Shenyun Wang ◽  
Wei Zhang ◽  
Hong Wang ◽  
Li Yu ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Abiotic Stresses ◽  
Myb Transcription Factor ◽  
Ethylene Signaling ◽  
Biotic And Abiotic Stresses ◽  
P Deficiency ◽  
P Concentration ◽  
Increased Sensitivity

Abstract The members of myeloblastosis transcription factor (MYB TF) family are involved in the regulation of biotic and abiotic stresses in plants. However, the role of MYB TF in phosphorus remobilization remains largely unexplored. In the present study, we show that an R2R3 type MYB transcription factor, MYB103, is involved in phosphorus (P) remobilization. MYB103 was remarkably induced by P deficiency in cabbage (Brassica oleracea var. capitata L.). As cabbage lacks the proper mutant for elucidating the mechanism of MYB103 in P deficiency, another member of the crucifer family, Arabidopsis thaliana was chosen for further study. The transcript of its homologue AtMYB103 was also elevated in response to P deficiency in A. thaliana, while disruption of AtMYB103 (myb103) exhibited increased sensitivity to P deficiency, accompanied with decreased tissue biomass and soluble P concentration. Furthermore, AtMYB103 was involved in the P reutilization from cell wall, as less P was released from the cell wall in myb103 than in wildtype, coinciding with the reduction of ethylene production. Taken together, our results uncover an important role of MYB103 in the P remobilization, presumably through ethylene signaling.

scholarly journals The Aspergillus niger MADS-box transcription factor RlmA is required for cell wall reinforcement in response to cell wall stress

2005 ◽  
Vol 58 (1) ◽  
pp. 305-319 ◽  
Author(s):  
Robbert A. Damveld ◽  
Mark Arentshorst ◽  
Angelique Franken ◽  
Patricia A. VanKuyk ◽  
Frans M. Klis ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Aspergillus Niger ◽  
Wall Stress ◽  
Mads Box ◽  
Cell Wall Stress ◽  
Cell Wall Reinforcement

scholarly journals A Banana PHD-Type Transcription Factor MaPHD1 Represses a Cell Wall-Degradation Gene MaXTH6 during Fruit Ripening

2017 ◽  
Vol 3 (5) ◽  
pp. 190-198 ◽  
Author(s):  
Wei WEI ◽  
Zhongqi FAN ◽  
Jianye CHEN ◽  
Jianfei KUANG ◽  
Wangjin LU ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Fruit Ripening ◽  
Cell Wall Degradation ◽  
A Cell

scholarly journals An NAC transcription factor orchestrates multiple features of cell wall development in Medicago truncatula

2010 ◽  
pp. no-no ◽  
Author(s):  
Qiao Zhao ◽  
Lina Gallego-Giraldo ◽  
Huanzhong Wang ◽  
Yining Zeng ◽  
Shi-You Ding ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Medicago Truncatula ◽  
Nac Transcription Factor ◽  
Multiple Features ◽  
Cell Wall Development

scholarly journals COMPOSITUM 1 contributes to the architectural simplification of barley inflorescence via meristem identity signals

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Naser Poursarebani ◽  
Corinna Trautewig ◽  
Michael Melzer ◽  
Thomas Nussbaumer ◽  
Udda Lundqvist ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Natural Selection ◽  
Cell Growth ◽  
Cell Walls ◽  
Molecular Breeding ◽  
Branch Formation ◽  
Genetic Mechanisms ◽  
Meristem Identity ◽  
Cell Wall Properties

Abstract Grasses have varying inflorescence shapes; however, little is known about the genetic mechanisms specifying such shapes among tribes. Here, we identify the grass-specific TCP transcription factor COMPOSITUM 1 (COM1) expressing in inflorescence meristematic boundaries of different grasses. COM1 specifies branch-inhibition in barley (Triticeae) versus branch-formation in non-Triticeae grasses. Analyses of cell size, cell walls and transcripts reveal barley COM1 regulates cell growth, thereby affecting cell wall properties and signaling specifically in meristematic boundaries to establish identity of adjacent meristems. COM1 acts upstream of the boundary gene Liguleless1 and confers meristem identity partially independent of the COM2 pathway. Furthermore, COM1 is subject to purifying natural selection, thereby contributing to specification of the spike inflorescence shape. This meristem identity pathway has conceptual implications for both inflorescence evolution and molecular breeding in Triticeae.

scholarly journals The Transcription Factor SomA Synchronously Regulates Biofilm Formation and Cell Wall Homeostasis in Aspergillus fumigatus

mBio ◽  
2020 ◽  
Vol 11 (6) ◽  
Author(s):  
Yuan Chen ◽  
Francois Le Mauff ◽  
Yan Wang ◽  
Ruiyang Lu ◽  
Donald C. Sheppard ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Aspergillus Fumigatus ◽  
Biofilm Formation ◽  
Wall Stress ◽  
Fungal Cell ◽  
Glucan Synthase ◽  
Content Type ◽  
Cell Wall Stress ◽  
Chitin Synthases

ABSTRACT Polysaccharides are key components of both the fungal cell wall and biofilm matrix. Despite having distinct assembly and regulation pathways, matrix exopolysaccharide and cell wall polysaccharides share common substrates and intermediates in their biosynthetic pathways. It is not clear, however, if the biosynthetic pathways governing the production of these polysaccharides are cooperatively regulated. Here, we demonstrate that cell wall stress promotes production of the exopolysaccharide galactosaminogalactan (GAG)-depend biofilm formation in the major fungal pathogen of humans Aspergillus fumigatus and that the transcription factor SomA plays a crucial role in mediating this process. A core set of SomA target genes were identified by transcriptome sequencing and chromatin immunoprecipitation coupled to sequencing (ChIP-Seq). We identified a novel SomA-binding site in the promoter regions of GAG biosynthetic genes agd3 and ega3, as well as its regulators medA and stuA. Strikingly, this SomA-binding site was also found in the upstream regions of genes encoding the cell wall stress sensors, chitin synthases, and β-1,3-glucan synthase. Thus, SomA plays a direct regulation of both GAG and cell wall polysaccharide biosynthesis. Consistent with these findings, SomA is required for the maintenance of normal cell wall architecture and compositions in addition to its function in biofilm development. Moreover, SomA was found to globally regulate glucose uptake and utilization, as well as amino sugar and nucleotide sugar metabolism, which provides precursors for polysaccharide synthesis. Collectively, our work provides insight into fungal adaptive mechanisms in response to cell wall stress where biofilm formation and cell wall homeostasis were synchronously regulated. IMPORTANCE The cell wall is essential for fungal viability and is absent from human hosts; thus, drugs disrupting cell wall biosynthesis have gained more attention. Caspofungin is a member of a new class of clinically approved echinocandin drugs to treat invasive aspergillosis by blocking β-1,3-glucan synthase, thus damaging the fungal cell wall. Here, we demonstrate that caspofungin and other cell wall stressors can induce galactosaminogalactan (GAG)-dependent biofilm formation in the human pathogen Aspergillus fumigatus. We further identified SomA as a master transcription factor playing a dual role in both biofilm formation and cell wall homeostasis. SomA plays this dual role by direct binding to a conserved motif upstream of GAG biosynthetic genes and genes involved in cell wall stress sensors, chitin synthases, and β-1,3-glucan synthase. Collectively, these findings reveal a transcriptional control pathway that integrates biofilm formation and cell wall homeostasis and suggest SomA as an attractive target for antifungal drug development.

scholarly journals A WRKY transcription factor confers aluminum tolerance via regulation of cell wall modifying genes

2020 ◽  
Vol 62 (8) ◽  
pp. 1176-1192 ◽  
Author(s):  
Chun Xiao Li ◽  
Jing Ying Yan ◽  
Jiang Yuan Ren ◽  
Li Sun ◽  
Chen Xu ◽  
...  
Keyword(s):  
Cell Wall ◽  
Transcription Factor ◽  
Aluminum Tolerance ◽  
Wrky Transcription Factor ◽  
Modifying Genes

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.

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