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

ABSTRACT: 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. RNA-Seq analysis of the wound site of leaf explants and leaf residu

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Lin XU

PROVIDER: E-GEOD-74585 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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

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. RNA-Seq analysis of the genes up-regulated by NAC1

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

Arabidopsis Flower and Embryo Developmental Genes are Repressed in Seedlings by Different Combinations of Polycomb Group Proteins in Association with Distinct Sets of Cis-regulatory Elements

Project description:Polycomb Group Proteins (PcGs) is critical in defining the epigeneticÂ blueprintÂ for animal and plant development. In plants, loss of different PcGs display both common and unique phenotypic defects, yet little is known about how these are established. Here, based on quantitative comparison of epigenomics data from mutants of key PcG components in Arabidopsis seedlings, we found that the PcG partners of CURLY LEAF (CLF), one of the major plant H3K27 trimethyltransferases, determines its selectivity in repressing gene loci involved in distinct developmental programs. The non-redundant role of CLF in determining flower development is specifically associated with HETEROCHROMATIN PROTEIN1 (LHP1). This context dependent effect of CLF corresponds well with tissue-biased target gene expression, and importantly, to differential co-occupancy of transcription factors, such as MADS box and B3-domain transcription factors. These results provide valuable insight as to the dynamic interplay between different PcGs and their collaborative control of plant development. To compare the effect of different PcGs on epigenetic structure from the genome-wide scale, we used chromatin immunoprecipitation followed by high-throughtput sequencing (ChIP-seq) to characterize the genome-wide binding profile of H3K27me3 in Col, clf-29, tfl2-2, atbmi1a/b and atring1a/b ; To investigate the functional consequence of the distinct H3K27me3 profile controlled by different combinations of PcGs, we characterized the transcriptome change in PcG mutants, including Col, clf-29, tfl2-2, lhp1-6, atbmi1a/b, atring1a/b, and clf29swn21.

2016-01-19 | E-GEOD-67322 | biostudies-arrayexpress

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

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

Time course RNA-seq data from barley infested with Tetranychus urticae and Banks grass mite

Project description:Spider mites, including the two-spotted spider mite (Tetranychus urticae, TSSM) and the Banks grass mite (Oligonychus pratensis, BGM), are becoming increasingly important agricultural pests. The TSSM is an extreme generalist documented to feed on more than 1100 plant hosts. In contrast, the BGM is a grass specialist, with hosts including important cereal crops like maize, wheat, sorghum and barley. Historically, studies of plant-herbivore interactions have focused largely on insects. However, far less is known about plant responses to spider mite herbivores, especially in grasses, and whether responses differ between generalists and specialists. To identify plant defense pathways responding to spider mites, we collected time course RNA-seq data from barley (Hordeum vulgare L.) infested with TSSMs and BGMs. Additionally, and as a comparison to the physical damage caused by spider mite feeding, a wounding treatment was also included. The experiment was performed with four biological replicates across each of the following (28 samples in total): no infestation (C, control), 2hr after wounding (W2), 24hr after wounding (W24), 2hr after TSSM infestation (T2), 24hr after TSSM infestation (T24), 2hr after BGM infestation (B2), and 24hr after BGM infestation (B24).

2016-06-24 | E-GEOD-83676 | biostudies-arrayexpress

A basic helix-loop-helix transcription factors network mediates the brassinosteroid signal [RNA-seq]

Project description:To understand how atypical bHLH, INCREASED LEAF INCLINATION1 (ILI1)-BINDING bHLH-1 (IBH1) (At2g43060), and close homologue, IBH1-like1 (IBL1) (At4g30410), interact to regulate cell elongation, genome-wide RNA-Seq expression analyses of IBH1 and IBL1 gain-(IBH1OE, IBL1OE) and loss-of-function (ibh1 (SALK 049177), ibl1(SALK 119457)) mutants were conducted. For loss-of-function mutant, homozygous ibh1(SALK 049177) and ibl1(SALK 119457) were compared to wild type (Col). For gain-of-function mutant, homozygous 35Spro:IBH1-GFP and 35Spro:IBL1-GFP were compared to wild type (Col). Total RNAs were extracted from seedling of each genotypes. For each genotype two biological replicates were sequenced.

2014-03-05 | E-GEOD-51119 | biostudies-arrayexpress

Genome-wide ATAF1 binding sites in Arabidopsis thaliana

Project description:Using a transgenic line expressing HA-tagged ATAF1 uncovered >400 ChIP-seq peaks in ATAF1-HA plants compared to Col-0 wild-type plants. Only a small sub-set of the candidate peaks could be verified using ChIP-qpcr or EMSA. Among the verified peaks we uncovered the key ABA biosynthetic gene NCED3 as a target of ATAF1 ChIP was performed using anti-HA antibodies on wild-type Col-0 plants and plants expressing HA-tagged ATAF1

2014-01-01 | E-GEOD-43637 | biostudies-arrayexpress

ChIP-seq of ASY1 and controls on meiotic-stage floral buds of Arabidopsis

Project description:ChIP-seq of ASY1 was carried out on meiotic-stage floral buds of Arabidopsis using an a-ASY1 antibody. The experiment aims to determine the genome-wide profile of ASY1. ASY1 is a component of the chromosome axis and is expressed exclusively during meiosis. Two negative controls were used to test the specificity of the ChIP experiment. First, ChIP-seq using the pre-immune on floral buds was carried out. Second, ChIP-seq using an a-ASY1 antibody was performed on leaf tissue where ASY1 is not expressed.

2020-05-18 | E-MTAB-8705 | biostudies-arrayexpress

DNA methylation variation in Arabidopsis has a genetic basis and appears to be involved in local adaptation

Project description:We investigated DNA methylation variation in Swedish Arabidopsis thaliana accessions. We found that methylation of transposable elements is temperature sensitive and associated with genetic polymorphism in both cis and trans, whereas gene body methylation is associated with genetic polymorphism in trans. Additionally, complementary RNA-Seq data for the Arabidopsis accessions were used to correlate methylation changes with gene expression across environments. mRNA-sequencing (mRNA-Seq) of 160 Arabidopsis thaliana accessions grown at 10 C and 163 grown at 16 C. The source tissue for RNA collection was whole rosette at the 9-leaf stage.

2015-01-01 | E-GEOD-54680 | biostudies-arrayexpress

Transcriptome-wide high-throughput deep m6A-seq reveals unique m6A methylation differential patterns among three organs in Arabidopsis

Project description:m6A is a ubiquitous RNA modification in eukaryotes. Transcriptome-wide m6A patterns in Arabidopsis have been assayed recently. However, m6A differential patterns among organs have not been well characterized. The goal of the study is to comprehensively analyze m6A patterns of numerous types of RNAs, the relationship between transcript level and m6A methylation extent, and m6A differential patterns among organs in Arabidopsis. In total, 18 libraries were sequneced. For the 3 organs: leaf, flower and root, each organ has mRNA-Seq, m6A-Seq and Input sequenced. And each sequence has 2 replicats.

2015-10-28 | E-GEOD-72706 | biostudies-arrayexpress

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