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Arabidopsis thaliana

ABSTRACT: Auxin-independent NAC pathway regulates cell wall metabolism in response to explant-specific wounding during regeneration in Arabidopsis I

PROVIDER: PRJNA300877 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR2889697_1.fastq.gz	Fastqsanger.gz
	SRR2889697_2.fastq.gz	Fastqsanger.gz
	SRR2889698_1.fastq.gz	Fastqsanger.gz
	SRR2889698_2.fastq.gz	Fastqsanger.gz

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Auxin-independent NAC pathway regulates cell wall metabolism in response to explant-specific wounding during regeneration in Arabidopsis

Project description:Auxin-independent NAC pathway regulates cell wall metabolism in response to explant-specific wounding during regeneration in Arabidopsis

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Arabidopsis thaliana

Project description:Auxin-independent NAC pathway regulates cell wall metabolism in response to explant-specific wounding during regeneration in Arabidopsis II

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Cell-wall damage activates DOF transcription factors to promote wound healing and tissue regeneration in Arabidopsis thaliana

Project description:Wound healing is a fundamental property of plants and animals that requires recognition of cellular damage to initiate regeneration. In plants, wounding activates a defense response via the production of jasmonic acid and a regeneration response via the hormone auxin and several ethylene response factor (ERF) and NAC domain-containing protein (ANAC) transcription factors. To better understand how plants recognize damage and initiate healing, we searched for factors upregulated during the horticulturally relevant process of plant grafting and found four related DNA binding with one finger (DOF) transcription factors, HIGH CAMBIAL ACTIVITY2 (HCA2), TARGET OF MONOPTEROS6 (TMO6), DOF2.1, and DOF6, whose expression rapidly activated at the Arabidopsis graft junction. Grafting or wounding a quadruple hca2, tmo6, dof2.1, dof6 mutant inhibited vascular and cell-wall-related gene expression. Furthermore, the quadruple dof mutant reduced callus formation, tissue attachment, vascular regeneration, and pectin methylesterification in response to wounding. We also found that activation of DOF gene expression after wounding required auxin, but hormone treatment alone was insufficient for their induction. However, modifying cell walls by enzymatic digestion of cellulose or pectin greatly enhanced TMO6 and HCA2 expression, whereas genetic modifications to the pectin or cellulose matrix using the PECTIN METHYLESTERASE INHIBITOR5 overexpression line or korrigan1 mutant altered TMO6 and HCA2 expression. Changes to the cellulose or pectin matrix were also sufficient to activate the wound-associated ERF115 and ANAC096 transcription factors, suggesting that cell-wall damage represents a common mechanism for wound perception and the promotion of tissue regeneration.

2022-03-23 | GSE179283 | GEO

Auxin-independent NAC pathway regulates cell wall metabolism in response to explant-specific wounding during regeneration in Arabidopsis II

Project description:In this study, through a genome-wide transcriptome analysis of wounding in the leaf explant, we identified NAC1 (petunia NAM and Arabidopsis ATAF1, ATAF2, and CUC2) family transcription factor gene that acts in response to wounding and functions in regulation of cell wall metabolism.

2015-12-31 | GSE74585 | GEO

Auxin-independent NAC pathway regulates cell wall metabolism in response to explant-specific wounding during regeneration in Arabidopsis I

2015-12-31 | GSE74584 | GEO

Auxin-independent NAC pathway regulates cell wall metabolism in response to explant-specific wounding during regeneration in Arabidopsis I

2015-12-31 | E-GEOD-74584 | biostudies-arrayexpress

Auxin-independent NAC pathway regulates cell wall metabolism in response to explant-specific wounding during regeneration in Arabidopsis II

2015-12-31 | E-GEOD-74585 | biostudies-arrayexpress

Histone H3K4 methyltransferase ATX1 positively regulates secondary wall biosynthesis in interfascicular fibers in Arabidopsis

Project description:Secondary wall thickening in the sclerenchyma cells is strictly controlled by a complex network of transcription factors in vascular plant. However, little is known about the epigenetic mechanism regulating secondary cell wall biosynthesis. Genome-wide analysis revealed that the up-regulation of genes involved in secondary wall formation during stem development is largely coordinated by increasing level of H3K4 tri-methylation. In this study, we identified that ARABIDOPSIS HOMOLOG of TRITHORAX1 (ATX1), a H3K4-histone methyltransferase, positively regulates secondary wall deposition mainly through activating the expression of secondary wall NAC master switch genes, SECONDARY WALL-ASSOCIATED NAC DOMAIN PROTEIN1 (SND1) and NAC SECONDARY WALL THICKENING PROMOTING FACTOR1 (NST1).

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Project description:FERONIA (FER) is a plasma membrane-localized receptor-like kinase (RLK) that belongs to the Catharantus roseus RLK1-like (CrRLK1L) subfamily. FER serves as a potential cell wall sensor that regulates multiple phytohormones, including ABA, JA, SA, BR, auxin, and ethyl, but the underlying regulatory mechanisms are still largely unknown. To further understand how FER regulates downstream signaling pathway, we performed FER-interacting proteins via immunoprecipitation-mass spectrometry (IP-MS) assay generated from FER-GFP transgenic plants.

2024-09-14 | PXD047596 | Pride

EVG1 regulates vascular development and regeneration in response to stress

Project description:Vascular tissues possess remarkable regenerative abilities, quickly healing post damage from wounding, grafting, or drought. The regenerative ability is also relevant for many plant pathogens that invade host tissues and induce the formation of vasculature to derive nutrients, thereby suggesting a possible mechanistic overlap in vascular regeneration between stresses. With comparative transcriptomics we identified a gene that was highly upregulated in Agrobacterium infection, nematode infection, and during graft formation. Loss of function mutant of EVG1 enhanced ectopic xylem formation in Vascular cell Induction culture System Using Arabidopsis Leaves (VISUAL) and enhanced graft formation and was termed ENHANCER OF VISUAL AND GRAFTING 1 (EVG1). EVG1 promoted cambium development and inhibited vascular regeneration during grafting. Transcriptomic analyses found that stress responsive, cell wall related, and ABA response related genes were differentially expressed in evg1. Mutants of EVG1 also phenocopied mutants of RLP44, a receptor that interacts with the receptors of both the brassinosteroid (BR) and phytosulfokine (PSK) signaling pathway to incorporate cell wall damages cues into hormone signaling and help maintain procambium cell identity. We identified that EVG1 is highly stress responsive while RLP44 is not despite showing similar phenotypes in developmental assays. We propose that EVG1 and RLP44 act in the same pathway. EVG1 might act as a stress signal and regulates development while indirectly also influencing the RLP44 associated pathways.

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