Three Rice NAC Transcription Factors Heteromerize and Are Associated with Seed Size

Mathew, Iny Elizebeth; Das, Satyajit; Mahto, Arunima; Agarwal, Pinky

doi:10.3389/fpls.2016.01638

Cited by 83 publications

(109 citation statements)

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“…[13,15] The property of repression of gene expression is usually contributed by the LVFY motif present within the NAC repression domain (NARD) in D subdomain. [8] In conclusion, the N-terminal region of NAC TFs contains the repression motif, and the C-terminal portion provides the transactivation property. [35] Also, AIF (ANTHER INDEHISCENCE FACTOR) with NARD, functions as a transcriptional repressor controlling anther dehiscence.…”

Section: Trr Determines the Functional Property Of Nac Tfsmentioning

confidence: 93%

“…[8,21,32] Results from transcriptional activation/ repression experiments with all NAC TFs to date are summarized in Table 1. NAC TFs include activators, repressors, and proteins having both activation and repression properties.…”

Section: Trr Determines the Functional Property Of Nac Tfsmentioning

confidence: 99%

“…Full length and C-terminal Nucleus Promotes lateral root development [139] Associated with seed size in rice [8] (Continued) Full length -Regulates ethylene-mediated chlorophyll degradation during leaf senescence [142] 46 OsNAC111 (Oryza sativa) Full length and C-terminal Nucleus Positively regulates defense responses [143] 47…”

Section: Mlnac5 (Miscanthus Lutarioriparius)mentioning

confidence: 99%

“…N-terminal Full length protein shows localization in the cellular membrane; N-terminal portion localizes in the cytoplasm and nucleus - [168] 77 TaNAC69 (Triticum aestivum) Full length and NARD motif Nucleus Promotes root elongation in drying soil [35] Bifunctional NAC TFs with both activation and repression property [90,171] 80 ONAC020 (Oryza sativa) Full length Full length protein localizes to ER; interaction with ONAC026 targets ONAC020 to nucleus Associated with seed size in rice [8] 81 ONAC026 (Oryza sativa) Full length Nucleus Associated with seed size in rice [8] (Continued) -Full length protein shows membrane localization; C-terminal portion shows nuclear localization Controls anther indehiscence by suppressing the expression of JA biosynthetic genes [36] 83 ANAC013 (Arabidopsis thaliana) -Full length protein is localized to both nucleus and ER Functions in mitochondrial retrograde regulation of oxidative stress response [172] 84 BnNAC5 (Brassica napus) No transactivation for full length protein -Involved in response to high salinity stress [123] 85 BnNAC485 (Brassica napus) -Nucleus Plays role in abiotic stress response and controls flowering time [173] 86 CUC1/CUP-SHAPED COTYLEDON1/ANAC054 (Arabidopsis thaliana)…”

Section: Full Length Nucleusmentioning

confidence: 99%

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May the Fittest Protein Evolve: Favoring the Plant‐Specific Origin and Expansion of NAC Transcription Factors

Mathew

Agarwal

2018

BioEssays

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Plant-specific NAC transcription factors (TFs) evolve during the transition from aquatic to terrestrial plant life and are amplified to become one of the biggest TF families. This is because they regulate genes involved in water conductance and cell support. They also control flower and fruit formation. The review presented here focuses on various properties, regulatory intricacies, and developmental roles of NAC family members. Processes controlled by NACs depend majorly on their transcriptional properties. NACs can function as both activators and/or repressors. Additionally, their homo/hetero dimerization abilities can also affect DNA binding and activation properties. The active protein levels are dependent on the regulatory cascades. Because NACs regulate both development and stress responses in plants, in-depth knowledge about them has the potential to help guide future crop improvement studies.

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Section: Trr Determines the Functional Property Of Nac Tfsmentioning

confidence: 93%

Section: Trr Determines the Functional Property Of Nac Tfsmentioning

confidence: 99%

Section: Mlnac5 (Miscanthus Lutarioriparius)mentioning

confidence: 99%

Section: Full Length Nucleusmentioning

confidence: 99%

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May the Fittest Protein Evolve: Favoring the Plant‐Specific Origin and Expansion of NAC Transcription Factors

Mathew

Agarwal

2018

BioEssays

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“…LOC_Os11g31330 is among NAC TFs that exhibit seed specific expression (Mathew et al 2016). In wheat, a NAC homolog (NAM-B1) was found to cause increased protein content, zinc and iron by accelerating senescence which subsequently increased nutrient remobilization (Uauy et al 2006).…”

Section: Association Analysis Identifies Known and Novel Candidate Gementioning

confidence: 99%

Genomic characterization of African cultivated and wild Oryza species

Wambugu¹

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Rice is the most important crop in the world, acting as the staple food for over half of the world's population. It belongs to the Oryza genus and has a wide genetic diversity of both wild and cultivated species, with a substantial proportion of this diversity being found in Africa. In this thesis, African cultivated and wild Oryza species have been characterized using genomic tools with the goal of promoting their conservation and utilization. A desk based study aimed at documenting the current state of conservation and utilization of African Oryza genetic resources revealed that they remain under collected and hence underrepresented in germplasm collections. Moreover, they are under-characterized and therefore grossly underutilized. In order to obtain maximum benefits from these resources, it is imperative that they are collected, efficiently conserved and optimally utilized. Efficient conservation and utilization of the Oryza gene pool is however hindered by lack of conclusive, consistent and well resolved phylogenetic and evolutionary relationships between the various cultivated and wild species. This study therefore sought to define the genetic and evolutionary relationships between the various wild and cultivated African species that form part of the AA genome group. This was done by reconstructing the phylogeny of Oryza AA genome species by massive parallel sequencing of whole chloroplast genomes. The analysis resulted in a well resolved and strongly supported phylogeny of the AA genome species showing strong genetic differentiation.The clearly defined relationships between the various taxa provide a robust platform for supporting the conservation and utility of these species. In an effort at promoting utility of these species, their starch physicochemical properties and the functional diversity relating to these starch related traits were analyzed. African rice was found to have some unique starch structure and properties, among these being high amylose content which is higher than in Asian rice. Amylose content is a key starch trait in rice. The health benefits of high amylose foods are increasingly getting recognized. African rice therefore seems to be a valuable genetic resource for breeding premium-value genotypes with high amylose content. The deployment of African rice genetic resources in rice improvement is however constrained by the inadequate understanding of the genetic mechanism underlying their unique starch traits, specifically amylose content. First, this study analysed key starch biosynthesis genes in the genomes of various cultivated and wild Oryza species. The analysis revealed that the pullulanase gene has undergone gene duplication in African rice. This apparent gene duplication was characterized with the aim of understanding whether itiii could be the molecular mechanism underlying high amylose in African rice. It was hypothesized that this gene duplication may have led to increased pullulanase activity which may have subsequently led to unique starch structure and properties...

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SUPER STARCHY1/ONAC025 participates in rice grain filling

et al. 2020

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NACs (NAM, ATAF and CUC, the name having been derived from the first three reported members of the family, NO APICAL MERISTEM/ NAM, Arabidopsis thaliana Activation Factor1 and 2/ ATAF1/2 and CUP-SHAPED COTYLEDON 2/ CUC2) are plant-specific TFs. These mutants show defective apical meristems (Souer et al., 1996; Aida et al., 1997). Since then, NACs have been characterized for their roles in both, stress responses and development, and are known to have evolved along with land plants (Mathew and Agarwal, 2018). NAC TFs such as VNDs (VASCULAR-RELATED NAC-DOMAINS) and SNDs (SECONDARY WALL-ASSOCIATED NAC DOMAIN PROTEIN) are integral for secondary wall biosynthesis process (

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Three Rice NAC Transcription Factors Heteromerize and Are Associated with Seed Size

Cited by 83 publications

References 104 publications

May the Fittest Protein Evolve: Favoring the Plant‐Specific Origin and Expansion of NAC Transcription Factors

May the Fittest Protein Evolve: Favoring the Plant‐Specific Origin and Expansion of NAC Transcription Factors

Genomic characterization of African cultivated and wild Oryza species

SUPER STARCHY1/ONAC025 participates in rice grain filling

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