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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Expression data from Arabidopsis C3H14/15 overexpressors, c3h14c3h15 double mutant vs wild type

ABSTRACT: In plants, CCCH zinc finger proteins involved in secondary wall formation and anther development are poorly understood. We have functionally identified two homologous genes C3H14 and C3H15 and found that the two genes differentially regulate secondary wall formation and anther development. C3H14 contributes more to secondary wall thickening, whereas, C3H15 is more important for anther development. We performed microarray analyses on C3H14/15 overexpressors and c3h14c3h15 double mutant to to ientify differentially-expressed genes involved in the two developmental processes. Our microarray data show that C3H14 and C3H15 regulate the expression of a number of genes involved in various biological activities, particularly those associated with secondary wall metabolism and pollen formation.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Chai Guohua

PROVIDER: E-GEOD-53580 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Arabidopsis C3H14 and C3H15 have overlapping roles in the regulation of secondary wall thickening and anther development.

Chai Guohua G Kong Yingzhen Y Zhu Ming M Yu Li L Qi Guang G Tang Xianfeng X Wang Zengguang Z Cao Yingping Y Yu Changjiang C Zhou Gongke G

Journal of experimental botany 20150301 9

Plant tandem CCCH zinc finger (TZF) proteins play diverse roles in developmental and adaptive processes. Arabidopsis C3H14 has been shown to act as a potential regulator of secondary wall biosynthesis. However, there is lack of direct evidence to support its functions in Arabidopsis. It is demonstrated here that C3H14 and its homologue C3H15 redundantly regulate secondary wall formation and that they additionally function in anther development. Plants with double, but not single, T-DNA mutants f ...[more]

PMID: 25732536

Similar Datasets

Expression data from Arabidopsis C3H14/15 overexpressors, c3h14c3h15 double mutant vs wild type

Project description:In plants, CCCH zinc finger proteins involved in secondary wall formation and anther development are poorly understood. We have functionally identified two homologous genes C3H14 and C3H15 and found that the two genes differentially regulate secondary wall formation and anther development. C3H14 contributes more to secondary wall thickening, whereas, C3H15 is more important for anther development. We performed microarray analyses on C3H14/15 overexpressors and c3h14c3h15 double mutant to to ientify differentially-expressed genes involved in the two developmental processes.

2015-04-07 | GSE53580 | GEO

NST1 over-expression vs wild type

Project description:In plants, secondary wall thickenings play important roles in various biological processes, although the factors regulating these processes remain to be characterized. We show that expression of chimeric repressors derived from NAC SECONDARY WALL THICKENINGS PROMOTING FACTOR1 (NST1) and NST2 in Arabidopsis resulted in an anther dehiscence defect due to loss of secondary wall thickening in anther endothecium. Plants with double, but not single, T-DNA-tagged lines for NST1 and NST2, had the same anther-indehiscent phenotype as transgenic plants that expressed the individual chimeric repressors, indicating that NST1 and NST2 are redundant in regulating secondary wall thickening in anther walls. The activity of the NST2 promoter was particularly strong in anther tissue, while that of the NST1 promoter was detected in various tissues in which lignified secondary walls develop. Ectopic expression of NST1 or NST2 induced ectopic thickening of secondary walls in various above-ground tissues. Epidermal cells with ectopic thickening of secondary walls had structural features similar to those of tracheary elements. However, among genes involved in the differentiation of tracheary elements, only those related to secondary wall synthesis were clearly upregulated. None of the genes involved in programmed cell death was similarly affected. Our results suggest NAC transcription factors as possible regulators of secondary wall thickening in various tissues. Keywords: transgenic vs wt comparison

2005-09-29 | GSE3363 | GEO

Transcription profiling of Arabidiopsis with NST1 over-expression vs wild type

2008-06-12 | E-GEOD-3363 | biostudies-arrayexpress

AtC3H14, a direct target of MYB46, suppress cell elongation and involved in the secondary wall formation.

Project description:Recently, AtC3H14, a CCCH-type zinc finger protein, was identified as one of the direct targets of MYB46, which is known as a master regulator of secondary wall biosynthesis. AtC3H14 and their homologs (i.e., AtC3H15 and PtrC3H14-1 from Arabidopsis and poplar, respectively) are predominantly expressed in the secondary wall forming tissues. Transgenic Arabidopsis plants overexpressing AtC3H14 (i.e., 35S::AtC3H14 plants) produced dwarfing phenotypes. 35S::AtC3H14 plants developed phloem fibers earlier than wild-type and this phenotype was more pronounced in the roots. Interestingly, ectopic secondary wall thickenings were found in both stems and roots. These phenotypic consequences are successively reproduced from the 35S::AtC3H15 and 35S::PtrC3H14-1 plants. Whole transcriptome GeneChip analysis identified that the ‘cell wall’ and ‘extracellular’-related genes are extremely over-represented in the stem tissues of 35S::AtC3H14 plants. These results suggest that AtC3H14 may act as a negative regulator of cell elongation with modification of cell wall reassembly and be involved in the secondary wall formation in Arabidopsis.

2014-12-05 | GSE23801 | GEO

Ectopic expression of MYB46 identifies transcriptional regulatory genes in secondary wall biosynthesis in Arabidopsis

Project description:MYB46 functions as a transcriptional switch that turns on the genes necessary for secondary wall biosynthesis. Elucidating the transcriptional regulatory network immediately downstream of MYB46 is crucial to our understanding of the molecular and biochemical processes involved in the biosynthesis and deposition of secondary walls in plants. The transcription factors identified here may include direct activators of secondary wall biosynthesis genes. The current study discovered novel hierarchical relationships among the transcription factors involved in the transcriptional regulation of secondary wall biosynthesis and generated several testable hypotheses. To gain insights into the MYB46-mediated transcriptional regulation, we first established an inducible secondary wall thickening system in Arabidopsis by expressing MYB46 under the control of dexamethasone inducible promoter. Then, we used ATH1 GeneChip microarray to obtain a series of time-course transcriptome profiles with regard to the induction of secondary wall development.

2010-05-27 | E-GEOD-16143 | biostudies-arrayexpress

Transcription profiling of Arabidopsis stem, leaf and hypocotyl tissue undergoing varying amounts of secondary cell wall synthesis

Project description:The aim of this experiment was to understand secondary cell wall formation as it is a major constituent of wood and plant fibres. To identify potential novel genes involved in this process, data has been generated from Arabidopsis stem, leaf and hypocotyl tissue undergoing varying amounts of secondary cell wall synthesis.

2006-01-01 | E-MEXP-265 | 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).

2020-11-29 | GSE153705 | GEO

The transcriptional changes induced by AtLEJ1 gene expression

Project description:The loss-of-function mutant of AtLEJ1 had well-developed anther cells and showed an increased accumulation of JA and ET in its flower bud clusters. Conversely, overexpression of AtLEJ1 caused a delay in the development of the floral organs, arrested anther cell development and secondary cell-wall biosynthesis in the endothecium cells, and reduced JA and ET contents in the flower bud clusters, resulting in male-sterility through anther indehiscence. We used microarrays to gain a comprehensive understanding of the transcriptional changes induced by AtLEJ1 gene expression, Keywords: Comparison of transcripts during flower development among 35S:AtLEJ1, atlej1 and wild type.

2008-12-20 | GSE5449 | GEO

Expression data from VND7 induction line

Project description:Plants typically contain two different types of cell walls: a primary wall that is being deposited around all growing cells, and a secondary wall that is produced in cells with specialized functions once they have ceased to grow. In Arabidopsis, VND7 is a transcription factor that is sufficient to activate secondary cell wall synthesis. To artificially turn on the secondary cell wall synthesis, VND7 was fused to the activation domain of the herpes virus VP16 protein and the glucocorticoid receptor (GR) domain. Thus, the transgenic plants harbouring the constructs can then be treated with dexamethasone (DEX), a glucocorticoid derivative, to induce the secondary cell wall formation. We used microarrays to investigate the global program of gene expression during the secondary cell wall development and identified up- and down-regulated genes associated with this process. Cultures were harvested at indicated time points after induction (1, 3, 6, 9, 12, 24, 30, 48 h) and at time point zero (0). Uninduced cultures (DMSO instead of DEX) served as controls for each time point, and thus, 48 microarray analyses for 8 time points (3 biological reps) for +/- induced VND7-VP16-GR cultures, and 3 arrays for time 0h. To ensure that the DEX did not influence the measurements, an empty vector construct (EV), i.e., without the VND7 gene, VP16-GR, was used at three time points, i.e., VP16-GR +/- DEX at 9h, 12h, and 24h after DEX induction.

2016-02-22 | E-GEOD-77153 | biostudies-arrayexpress

Transcriptomes of Rice internode before and after heading

Project description:To identify genes that co-express with rice cellulose synthase genes involved in rice secondary cell wall formation, transcriptome analyses was performed using rice internodesbefore and after the heading stage, where secondary cell wall formation extensively occur.

2013-10-01 | GSE51289 | GEO

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